research report - amazon simple storage...

FARMING AHEAD No. 100 - April 200018

Ahigh-pressure water cleaner is a valuablepiece of equipment for cleaning tractors,

implements, dairies, utilities or motorbikes. But buying a cleaner can be a difficult

decision due to the vast array of machines onthe Australian market.

To narrow the search, the Kondinin Grouptested 30 petrol and single-phase electricpressure cleaners and evaluated theirperformance based on pressure and flowrates, cleaning ability and ease-of-use (seeTable 1).

The importance of safetyMost machines tested met or exceeded the

manufacturer’s claimed pressure and flowspecifications but the test panel, comprisingKondinin Group engineers, Farmsafe officers,mechanical consultants and farmers, raisedserious safety concerns.

The risk of operator injury was of concernto the panel in relation to electric-poweredpressure cleaners such as the Aussie PumpsF140, KEW 9100, Pacific Pump K300MTS,Stihl RE125K and the Kerrick DS1530.

All were fitted with an auto-stop cut-outwhich shut down the machine when the triggerwas released. But the position of the ‘on-off’switch was not visible to the operator, whichwas considered dangerous if disconnecting alance or hose while believing the machinewas off.

Other problems arose with excessive currentuse. The Stihl RE270K blew fuses during thetests (the capacitor used 40 amperes (amps)on starting) and the Aussie Pumps FT130-11drew an excessive 17.2 amps when running,while only fitted with a 10-amp power socket.

Most models met specificationsThere were many excellent machines tested,

with models such as the Kerrick Quiky(electric-powered), Pressure MastersHuntsman 3000 (petrol-driven) and SpitwaterHP201A (petrol) exceeding both their

manufacturer-claimed pressures and flowrates.

In terms of pressure the Quiky tested at10,340 kilopascals (kPa) but the claimedspecification was 8957kPa, the Huntsman 3000tested at 20,670kPa (rated at 19,988kPa) andthe HP201A tested at 21,360kPa (20,670kPa).

The test panel measured flow rates for theQuiky at 8.2 litres per minute (8L/min), theHuntsman 3000 at 15.6L/min (15L/min) andthe HP201A at 15.4L/min (15L/min).

Why use a pressure cleaner?The Kondinin Group’s 1999 National

Agricultural Survey (NAS ’99) showed mostfarmers used pressure cleaners to clean thefarm utility, tractors and harvesters.

While equipment will last longer anddepreciate less if cleaned regularly, otherreasons for using a pressure cleaner includedreducing the risk of contaminating paddockswith herbicide-resistant weeds, less fire risk asany chaff buildup is removed, and easiermachine maintenance.

Dirt-, grease- and oil-free machinery iseasier to strip down. If parts are cleanedbefore disassembly the chance of dirt enteringthe reassembled part is reduced.

Pressure cleaners also conserve water asthey use high-pressure rather than a largevolume of water to shift grime.

Cleaners suit heavy-duty useThe Kondinin Group tested pressure

cleaners from 10 manufacturers. Due to thelarge number of cleaners available, a modelwas chosen from the lower and upper ends ofeach manufacturer’s range which were

Research ReportPressure cleaners

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The Kondinin Group tested 30 petrol and electric pressurecleaners to gauge their cleaning ability. Kondinin Groupresearch engineer Josh Giumelli and consultant KimBarnett put the machines through their paces.

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Heavy-duty cleaners ‘wash up’ on-farm

Electric models

Spitwater KEW KEW Pressure K.a.rcher K.a.rcher Gerni Gerni Kerrick Kerrick Wasp Aussie Aussie PacificMasters Pumps Pump Pump

HP110 9100 30CA Scorpion K630MS HD650 208 250 Quiky DS1530 C11OE F140 FT130-11 KXM1351500 890

Ease of use ��

Portability ��

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Controls ��

Achieves ratedpressure �� NA1 �� NA1 �� NA1 ��

Achieves ratedflow rates ��

Safety ��

Operator’s manual � � � � � � � � � � � � � �

1. Test gauge could not be installed in pump head due to the design of the pressure cleaner.

2. No low pressure setting.

TABLE 1 Star ratings for pressure cleaners tested by the Kondinin Group

Pressure cleaners...suitable for medium- to heavy-duty farm use.In some cases, the models required for testingwere not available and other machines weresubstituted (by the manufacturer).

Most manufacturers supplied two cleanersfrom each of their petrol and single-phaseelectric ranges, with prices ranging from$500–$4000.

The Kondinin Group test panel did not test three-phase electric models, as access tothree-phase electricity is not readily available.In addition, the panel did not test many of thecheaper models available as they were moresuited to the ‘hobby’ market.

Construction and pumpsA pressure cleaner consists of a motor

(petrol or electric) and a pump, sometimeswith a gearbox in-between.

Triplex piston or swash plate (wobble)positive displacement pumps were used on allmachines tested (see Figure 1, page 20). Allpetrol units were fitted with Honda overheadvalve air-cooled engines.

The main difference between a pressurecleaner pump and one fitted to a firefightingunit or other pump setup is the flow rate andpressure output. A 4kW petrol-drivenpressure cleaner pump will develop a low flowrate and high-pressure output of about11L/min at 13,000kPa.

By comparison, the same engine driving afirefighting unit will pump about 270L/min atonly 200kPa.

The low flow and high-pressure output of the pressure cleaner is achieved through the use of a positive displacement pump.

Pressure relief valveThe pressure relief or bypass valve is an

important part of the pump. Without it, thepressure would increase to damaging levelswhen the operating trigger is released.

The valve is held closed under springcompression, which controls the maximumoutput pressure of the cleaner. When themachine is operating with the nozzle closed,the pressure inside the pump head rises,forcing the relief valve open. The water thencirculates through the pump until the nozzle isopened again.

Most larger pressure cleaners use anunloader valve, which relieves the pump of any pressure during bypass mode use.

The pressure relief valve is set by themanufacturer to achieve the requiredmaximum pressure.

Although most valves can be adjusted tolower the output pressure, they are fitted with

a stop to avoid setting them too high. Do notoverride the factory setting to increase themaximum pump output pressure as this cancause dangerous failure of pump components,not to mention voiding the warranty.

When used in bypass mode for long periods,damage can occur to the internal componentsof the pump.

Excessive recirculation of bypass watercauses the pump to become too hot. As mostmachines tested cannot cope with more than50–60 degrees Celsius, damage will occur.

To counteract this, some pressure cleanersare fitted with a thermal dump whereby water is dumped by the pump when it becomestoo hot or after a certain time period.

FARMING AHEAD No. 100 - April 2000 19

There is always an inherent risk involvingmachinery that operates at high pressure but

safety can be improved by being familiar with themachine and following safety guidelines.

� Read all operator's manuals and safetyinstructions before using equipment. It pays tobe familiar with the operating instructions toavoid unnecessary damage to the machine.

� Wear protective clothing including safetyglasses, boots, gloves and a full protective suitespecially if handling chemicals. The highvelocity jet of water can easily cause dislodgeddirt to hit the eyes at speed. Typical cleanersuse water at pressures up to 25,000kPa but only a fraction of this is required to pierce the skin and cause injury.

� When using a pressure cleaner for the firsttime, familiarise the feel of the reaction forcefrom the lance (the handpiece). As the jet ofwater leaves the gun, a force pushes back onthe operator. This may be enough tounbalance someone working at height, causinga serious fall. Always hold the lance with both

hands.

� Electricity and water do not mix. When usingelectric pressure cleaners, pay special attentionto where the power cord lies. Do not place cords where they can be incontact with water draining from the cleaning,particularly if an extension cord is used where water can find its way to the join.

� If using petrol-driven pressure cleaners inconfined areas, ensure there is adequateventilation. Carbon monoxide fumes can build-up quickly and operators can be affectedbefore they realise it. Symptoms of carbonmonoxide poisoning include confusion,headache, dizziness, fatigue and weakness.Exposure can cause permanent brain damageincluding memory loss.

� If using chemicals always know what they are,the consequences of contact with the skin andemergency treatment.

Safety essential for high-pressure machines

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Petrol models

Pacific Stihl Stihl Spitwater Pressure K.a.rcher K.a.rcher Gerni Gerni Kerrick Kerrick Wasp Aussie Aussie Pacific PacificPump Masters Pumps Pumps Pump PumpK300MTS RE125K RE270K HP201A Huntsman HD1050B HD1040B 118P 600P HH2011 HH3017 HP50- Tiger BB300H XL20 XL40

3000 12WR MkII

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Pressure cleaners...If a pump experiences a loss or restriction of

feed water, cavitation can occur. Cavitation,or cold boiling, occurs when the pressureinside the pump becomes too low and vapourbubbles form in the water. This can harm theinternals of the pump and lead to rapidoverheating and accelerated wear.

Larger electric pressure cleaners haveshutdown mechanisms to avoid cavitation andpossible damage.

Panel raises safety concernsMost electric pressure cleaners tested were

fitted with an auto-stop cut-out switch. As thename suggests, the machine is automaticallyswitched off when the trigger is released onthe handpiece. This saves the pump andmotor from running in bypass mode forextended periods. The pump waits in standbymode and switches on again when it senses thedrop in pressure when the trigger is depressed.

While most cleaners tested shut themselvesdown instantaneously, the Kerrick DS1530and Pacific Pump K300MTS ran for about 30 seconds before switching off. This featurewould possibly save electricity as it wouldreduce the amount of times the machine cutsin and out, avoiding the large current draw ofthe capacitor start.

But on the downside, the test panelrecognised the potential for serious injury to the operator if a lance or high-pressurehose was accidentally disconnected when an auto-stop pressure cleaner was instandby mode.

Most machines did not have large visible on-off switches. But even when the switch wasvisible it was often difficult to determine froma distance whether the switch was in the ‘on’ or‘off’ position.

While the panel found it difficult, and inmost cases impossible, to undo a fitting underhigh-pressure, it fails to alleviate the risksinvolved. This is an issue manufacturers needto address.

High currents pose a riskOf particular concern were the high

currents drawn by some of the electricpressure cleaners when switched on.

For example, when testing the StihlRE270K this current proved to be four timeshigher than the running current of themachine.

This characteristic would be worse on-farmwhere voltage drops mean that full 240-voltpower is rarely available.

The starting currents of the machines where high currents were a problem wereincreased alarmingly when the voltage wasdecreased to 230V.

A large generator was required to provideaccurate voltage regulation and to testmachines on lower voltages as would be foundon farm supplies.

The Aussie FT130-11 pressure cleaner used17.2 amps during normal running, yet was fitted with a 10-amp power plug.

The difference in current use and the powerplug amperage caused the power cord tobecome very hot after only five minutes ofrunning, prompting fears of cord damage whichmay result in an electrocution or fire.

The Kondinin Group believes it isunacceptable for a machine to exceed itselectricity plug rating.

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FIGURE 1 How positive displacement pumps achieve low flow and high-pressure

In a triplex pump, a crankshaft drives three pistons. One-way valves in the head allow low-pressurewater to enter the cylinders and to exit to the high-pressure hose under the force of the pistons. The use of three pistons tends to smooth the pulsing action of the output.

A swash plate pump also uses pistons but they are arranged parallel in a circular layout, similar to thechamber of a six-shot revolver. A swash plate has an angled face that rotates against the ends of thepistons, driving them in and out. The valve setup is similar to a triple piston pump. Most swash platepumps also have three pistons.

Lances have a strong influence on pressurecleaner performance as a cleaner with high

pressure and flow rates can be let down by poornozzle size or spray patterns.

The Kondinin Group target test results indicate amachine’s cleaning power — this can be comparedwith the measured output to gauge performance.For example, both the K

.a.rcher HD1050 and the

Pressure Masters Huntsman 3000 performedsimilarly under test conditions at 20,670kPa andabout 15L/min flow. But the K

.a.rcher recorded four

kilograms force (kgf) on the target test (1kgf morethan the Huntsman) meaning it had a highercleaning ability.

Each machine was tested using a standardnozzle as supplied. Some manufacturers suppliedoptional turbo or rotorjet nozzles which they claimimprove cleaning power by oscillating the jetdirection and forming larger droplets. Target test

values from machines with turbo nozzles wereslightly lower than with standard nozzles fitted.The oscillating jet cleaned dried concrete from acement mixer more efficiently than a standardnozzle but this situation was reversed whencleaning oil-soaked concrete slabs.

Some manufacturers quote an ‘effectiveworking pressure’ for cleaners fitted with turbo nozzles but this is only a theoretical value to represent the pressure of a machine withthe same cleaning power but with a standardnozzle.

The Kondinin Group advises caution whencomparing pressure values as they can bemisleading and do not represent the actualmaximum pressure output of the pump. Targetforce values will help farmers determine cleaningability.

Quality lances improve performance

Source: Kondinin Group

Pressure cleaners...

Before buying a pressure cleaner, take timeto plan selection criteria based on what

the machine will be used for. There are literally hundreds of different

types of pressure cleaners available, costingfrom a few hundred dollars to many thousandsof dollars. It is therefore vitally important to make sure the selection criteria are well-established before starting the hunt for anew pressure cleaner.

A handy checklist (see Table 2) can help inthe decision-making process.

Pressure and flow ratesMost buyers tend to consider pump

pressure when comparing the output of

cleaners. While this is an importantcharacteristic, the flow rate is equallyimportant. This is because two pressurecleaners with identical maximum pressureswill not have equal cleaning power if one has ahigher flow rate.

The best way to compare different machinesis by their cleaning power. Specificationssupplied with pressure cleaners often do notquote this value but it can be easily calculatedusing the formula in the buyer’s checklistbelow. This method will often show certaincleaners with a lower pressure are actuallymore powerful than others with higherpressures due to increased flow rates (seeTable 3, page 22). But remember, the maximum flow does not

occur at maximum pressure. Of the 30 cleaners tested, most

manufacturers did not include flow rates atmaximum pressure in the specifications.

Compare cleaning powerCleaning power can also be used to

calculate the efficiency of a pressure cleaner. For example, if a cleaner with a 2.7kW

motor has a cleaning power of 2.4kW, then ithas an efficiency of 89%. Cleaning power issimply divided by motor power.

If the cleaner will not be used often, then acheaper model would be suitable but if it willbe required for heavy-duty cleaning tasks anda higher cleaning power, then the machine willinevitably cost more.

Frequency of useMost manufacturers offer both industrial

and domestic models. While these may have similar outputs in some cases, theindustrial cleaners are designed to withstandfrequent use.

Typically, a farmer falls into a categorybetween the two — the pressure cleaner willnot be used daily but a more reliable andrugged machine than the average domesticmodel is required.

Petrol models are more portablePetrol-driven pressure cleaners have the

advantage of not being tied to an electricitysupply, provided there is a water supplyavailable.

Most cleaners will not draw water frommore than half-a-metre in depth, which canlimit their pressure output. In such cases, it isworthwhile using a 'flooded' intake.

As most farmers do not have access tothree-phase electricity, petrol-powered unitsmay be the answer if higher cleaning power is required.

If the machine will be used indoorsfrequently, then an electric model isrecommended due to its lack of exhaust fumes.

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Panelist Simon Wallwork tested the ability of a pressurecleaner to remove dried cement from a mixer as part oftests to help decision-making when buying a machine.

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Finding the right machine for the job

Make..................................................................

Model................................................................

Price...................................................................

Petrol or electric......................................................

Power (kW)........................................................

Pressure output (kPa) and volume output (L/min)......

Cleaning power kW (see formulae below)...........

Price/kW of cleaning power ($/kW).....................

Options

Detergent injection fitted....................................

Detergent rate variable.......................................

Inbuilt detergent tank.........................................

Pressure gauge fitted..........................................

Auto-stop fitted...................................................

10-amp or 15-amp power supply required.........

Extra lances included (for example, turbo lance)..

Long high-pressure hose.....................................

Hose storage provided........................................

Adjustable lance nozzle......................................

Roll-cage protection (petrol-powered).................

Ease of transport................................................

Thermal dump valve (bypass tank) fitted.............

Easy-start valve fitted (larger petrol models)........

These points might not all seem appropriate but they will help a prospective buyer make the finalchoice. The price per kilowatt of cleaning power is a good measure of the value compared with thecleaning power of the machine. Manufacturers will probably not quote high-pressure flow rates, asthey are less than low-pressure flow rates. The final choice will depend on how much the machinewill be used and its purpose.

Formulae: Cleaning power (kW)..........................

Source: Kondinin Group

TABLE 2 Buyer’s checklist

Yes No

= flow rate (L/min) x pressure (kPa)60,000

= flow rate (L/min) x pressure (bar)600

= flow rate (L/hour) x pressure (psi) 523,800


Pressure cleaners...� � � � �

The Kondinin Group tested 30 electric andpetrol-driven pressure cleaners to

evaluate their cleaning ability, ease-of-use,portability, handpiece design and safety.

A panel comprised of farmers, engineers andfirst-time users rated the machines aftercleaning oil-soaked concrete slabs and paintedsteel. A Farmsafe official assessed each unitand outlined safety concerns.

Test procedureEach pressure cleaner was rigorously tested

(see Table 3) based on:•Maximum pressure output as measured at

the pump head using a calibrated gauge.

•Maximum and minimum flow ratesmeasured over five minutes of continuousoperation.

•Temperatures of pump heads, pressurerelief valves, gearboxes, engine sumps andelectric motor casings were recorded at 30-second intervals for five minutes onbypass mode and during high-pressure andlow-pressure volume tests. No significantproblems were recorded.

•Maximum and minimum detergent flow rates.

•Electric motors were measured for start-upcurrent draw and normal running current.

Target force testEach machine was also tested for its target

force where the lance was clamped into aframe with a load cell set 10 millimetres fromthe nozzle. The force was recorded with thecleaner operating at high-pressure. This canbe used as a measure of cleaning power (a higher cleaning power is preferred).

Even pressure maintainedA constant head water tank was used

to supply the machines during testing toensure intake pressure remained even. A high-powered generator was used tosimulate voltage variations.

Assessment panel finds wide-ranging results

Make Model Claimed Test result Claimed Test result flow rate Cleaning Target Measured Chemical injection Claimedpressure pressure flow rate1 (L/min) power3 force run current (mL/min) power

(kPa) (KPa) (L/min) High Low (kW) (kgf) (amps) Maximum Minimum (kW)pressure pressure

Electric (all single-phase)Aussie Pumps F140 13,780 NA 9.0 7.0 7.8 NA 1.00 6.8 943 21 2.4

FT130-11 13,091 12,402 13.0 11.0 13.3 2.27 2.10 17.2 1630 88 3.0

Gerni 208 9508 9302 10.0 8.3 10.0 1.29 0.90 7.2 54 set 1.6250 14,503 12,402 10.0 8.7 9.0 1.79 1.35 10.1 798 74 2.7

K.a.rcher K630MS 13,987 NA 8.3 7.0 7.7 NA 1.00 6.1 Pellet system 2.2HD650 14,986 13,850 9.2 8.7 10.0 2.00 1.60 13.8 644 54 3.0

KEW 9100 12,919 NA 8.7 8.0 9.0 NA 0.50 7.9 608 245 2.230CA 14,990 13,436 10.0 7.7 9.0 1.71 1.55 10.0 451 54 2.8

Kerrick Quiky 890 8957 10,340 8.0 8.2 NA2 1.41 1.00 8.4 1615 60 1.6DS1530 10,335 11,024 12.0 10.0 11.6 1.83 1.50 9.8 920 12 2.2

Pacific Pump KXM135 10,335 8613 7.0 6.3 NA2 0.91 0.75 5.7 Not fitted 1.7K300MTS 12,058 12,402 11.0 9.3 11.0 1.92 1.50 10.1 840 set 2.7

Pressure Masters Scorpion 1500 9991 9991 10.6 8.0 11.0 1.33 1.25 9.3 333 set 1.7

Spitwater HP110 11,024 11,024 12.0 10.6 11.6 1.94 1.75 12.7 1205 18 2.2

Stihl RE125K 13,470 13,091 7.7 6.0 7.0 1.31 0.65 4.7 642 set 2.3RE270K 9991 8613 10.0 10.0 10.3 1.43 1.25 9.2 115 48 2.4

Wasp C11OE 11,024 10,680 11.7 11.7 13.7 2.07 1.85 10.6 Not fitted 2.2

Petrol (rpm)4

Aussie Pumps Tiger MkII 13,780 13,263 11.0 9.2 11.2 2.03 1.60 3320 882 18 4.1BB300H 20,670 19,981 17.0 15.0 17.0 4.98 4.30 3440 182 30 9.7

Gerni 118P 12,988 13,436 13.0 11.4 12.8 2.55 1.70 3540 760 32 4.1600P 17,983 17,570 19.5 18.5 21.2 5.40 3.80 3550 423 71 8.2

K.a.rcher HD1040 20,980 19,292 14.2 13.9 15.1 4.46 3.90 3230 130 20 8.2HD1050 22,978 20,670 15.5 14.2 15.2 4.87 4.00 3400 500 69 9.7

Kerrick HH2011 13,780 12,540 11.0 8.8 9.0 1.83 1.65 3840 2000 114 4.1HH3017 20,670 20,670 17.0 16.7 19.7 5.73 4.90 3580 300 18 9.7

Pacific Pump XL20 13,780 11,024 11.0 9.0 NA 1.65 1.95 3670 Not fitted 4.1XL40 20,670 17,225 15.0 13.8 14.4 3.96 3.70 3795 683 60 9.7

Pressure Masters Huntsman 3000 19,988 20,670 15.0 12.4 15.6 4.26 3.00 2780 468 60 9.7

Spitwater HP201A 20,670 21,359 15.0 12.4 15.4 4.40 3.70 3130 480 48 9.7

Wasp HP150-12WR 15,503 15,503 12.0 10.7 11.7 2.75 2.05 3100 Failed to work 4.8

1. The maximum claimed flow rate occurs at the low-pressure setting. 2. No low-pressure setting. 3. Calculated from the flow rate at the maximum test pressure. 4. At maximum pressure.

Note: To convert pressure in kilopascals to pounds per square inch, multiply kPa by 0.145; to convert kilopascals to bar, divide kPa by 100; to convert kilowatts tohorsepower, multiply kW by 1.34; converting kilograms force to pounds force is ·100kgf = 0.98kN = 221 pounds force.

TABLE 3 How pressure cleaners performed in Kondinin Group tests compared with the claimed specifications



The output pressure of theAussie Pumps F140 could not

be measured due to the design ofthe pressure cleaner.

This meant the test gaugecould not be installed in thepump head.

This is a common problem withsmaller electric pressure cleaners.

The target force of 1.0kgf forthe Aussie Pumps F140 wasslightly higher than the 0.9kgf of the Gerni 208 which had ahigher flow rate of 10L/min at9300kPa.

The machine recorded amaximum flow output of7.8L/min during testing, wellbelow the claimed flow output of9L/min.

The F140 is fitted with auto-stop cut-out but as withmany other machines it wasimpossible to see the position ofthe switch from a reasonabledistance.

The panel criticised thepositioning of the switch as aserious safety concern.

Price$998 (tax exempt).

Manufacturer’s commentThere is an on-off switch

mounted on top of the machineclearly visible to the operator. Theautomatic cut-out is a pump andmotor protection device and is notdesigned as a substitute for the on-off switch.

The Kondinin Group test panelwas alarmed at the 17.2 amps

of current used by the FT130-11model during normal operationwhen the unit is only fitted with a10-amp electricity plug.

During testing, the power cordbecame extremely hot, promptingfears that prolonged use maycause failure, resulting in a fire orelectrocution hazard.

Voltage drops could increasethe problem. At a test voltage of230 volts, the normal runningcurrent increased to 23 amps,causing the motor to slow andpressure output to fall from12,400kPa to 9990kPa.

With the combination of high-pressure and flow output of13.3L/min, this unit was thestrongest electric cleaner tested.

In fact, the 2.1kgf recorded on the target force test was

more than most of the smaller petrol powered models tested.Unfortunately, this performancewould not be repeated if themachine drew 10 amps instead of17.2 amps.

Operators need to avoidwasting detergent as the injectionsystem can use up to 1.6L in oneminute.


Manufacturer’s commentThe normal operating amperage

for the FT130-11 heavy-duty single-phase is about 13.3 amps.Aussie Pumps is at a loss tounderstand how this unit drew 17.2amps but it may be due to it beinginadvertently fitted with a 10-ampplug instead of a 15-amp plug.Aussie Pumps has subsequentlyfitted a 15-amp plug.

Best features•Auto-stop cut-out.•Inbuilt detergent tank.•Good frame, lance and hose holders.•Portable.

Worst features•Uses an excessive running current.•Poor switch on-off position visibility.•No pressure gauge fitted.•Uses up to 1.6L of detergent per minute.•No hose swivels.

Best features•Auto-stop cut-out.•Inbuilt detergent tank.

Worst features•Poor switch on-off position visibility.•No pressure gauge fitted.•No hose swivels.

Aussie Pumps F140 (electric) Aussie Pumps FT130-11 (electric)

The 4.1kW Tiger MkII petrol-driven pressure

cleaner performed well, meetingthe manufacturer’s claimedspecifications.

But care is required when usingthe pressure cleaner to avoidinjury from burns. This isbecause, if lifted from the wrongside, the hot exhaust can easilycome into contact with thehandler’s leg (as was the caseduring testing).

The Kondinin Group safetypanel also criticised the machine’slack of wheels.

The Tiger MkII was the onlypetrol-powered pressure cleanertested not to be fitted with wheels.

In addition, its 30kg weight wasconsidered excessive for amachine that would often becarried around on-farm.

But one panel membercommented that its lack of aframe and wheels made it easierto lift onto farm vehicles.


Manufacturer’s commentAussie Pumps believes the

Kondinin Group underestimatedthe importance of the thermaldump on all engine drive machines.Table 3 (page 22) does not showwhich machines are fitted with athermal dump as standardequipment.

The Aussie Pumps 9.7kWBB300H pressure cleaner met

its 20,670kPa and 17L/minspecifications.

This pump is equipped with an‘easy start’ valve which releasesthe pressure when pull-startingthe engine. This valve leakedwater, especially during totalbypass running.

The roll cage was well-built andprotected the machine fromdamage.


ContactAustralian Pump IndustriesPhone: (02) 9894 4144Fax: (02) 9894 4240.

Manufacturer’s commentWhen the operator wishes to

disconnect the lance or hose, themachine first needs to be turned offat the switch.

Best features•Lance storage.•High output.

Worst features•Lance has a fan spray pattern

only.•Leaky easy-start valve.

Best features•Simple construction.•Good lance.

Worst features•Awkward to carry long distances.•No hose swivels fitted.•Danger from unprotected exhaust.

Aussie Pumps Tiger MkII (petrol)

Aussie Pumps BB300H (petrol)



This was one of the smallestcleaners tested, yet it achieved

a good target pressure of 0.9kgf.Although the claimed pressure

was 9508kPa (tested at 9300kPa),this unit’s flow rate of 10L/m wasequal to that of a larger machine.

The panel said the switch wouldbe better placed on top of the unitas it was difficult to find with theunit sitting on the ground.


Manufacturer’s commentThe turbo lance supplied actually

increases the size and weight of the water globules and, combinedwith the high water flow, gives this compact-sized unit theperformance of larger, higherspecification machines.

The Gerni 208 and 250 electricmodels and 118P and 600P

petrol models all use swash platepumps (see Figure 1, page 20).

The Kondinin Group test panelconsidered the Gerni cleaners tobe of high-quality construction.

The Gerni 250 did not performas well as the smaller 208 model inflow rate tests, achieving only9L/min. It had a lower maximumtest pressure of 12,400kPa than themanufacturer’s specification of14,500kPa.

The test panel was impressed bythe overall construction of themachine, commenting on its

well-placed hanging racks andcontrols.

For example, the large visiblepower switch drew particularpraise as it was easy to see if themachine was off or in standbymode.


Manufacturer’s commentGerni units are run-up and tested

by the local dealer before delivery.In some cases, fine-tuning isrequired at this point to achievemanufacturer’s specifications forpressure and water flow.

Best features•Auto-stop with visible switch.•Simple practical construction.•Two lances are supplied as standard.

Worst features•Pressure and flow rates are less than the specified

rates.

Best features•High flow rate for size.•Lightweight and portable.•Turbo nozzle lance supplied as standard.

Worst features•Poor switch accessibility.•Non-adjustable chemical injection.

Gerni 208 (electric)Gerni 250 (electric)

The 118P was the smaller ofGerni’s two petrol-powered

cleaners tested and performed wellfor a 4.1kW machine, achieving itsclaimed specifications.

In terms of pressure, thismachine measured 13,436kPa(12,988kPa rated) with a flow rateof 12.8L/min (13L/min).

In particular, the high-qualityroll cage construction and handlesmade the machine easy to move.But access to the rope-pull for

starting the Honda engine wasseverely restricted, especially for aleft-handed operator.


Manufacturer’s commentStarting the Honda engine,

although more suited to a right-handed operator, is made easier dueto the unique Gerni bypass valvesystem that does not pressurise thesystem when the starter rope is pulled.

The 8.2kW petrol model hadsimilar performance to many

of the 9.7kW models tested.It had a pressure of 17,570kPa

and a high flow rate of 21.2L/mincompared with the claimed19.5L/min. The flow rate was thehighest recorded of all pressurecleaners tested. The target forceof 3.8kgf was higher than the9.7kW Pacific Pumps XL40(3.7kgf), Pressure MastersHuntsman 3000 (3.0kgf) and theSpitwater HP201A (3.7kgf). Therobust construction of the framecame at a price, as its weight (at

about 100kg) and solid rubbertyres made it difficult to move.


ContactGerni PowercleanPhone: 1800 11 2428.

Manufacturer’s commentThe heavier, more robust design is

in keeping with overall specifications.The unit houses a heavy-duty,low-rpm 600 series pump coupled toa 2:1 reduction box on a Hondamotor. It will draw up to 5m.

Best features•High output.•The unit is well-protected by its frame.•A basket is supplied for a detergent bottle.•Low vibration.•Excellent pump oil reservoir

visibility.•A turbo lance is fitted as standard.

Worst features•Excessive weight.•The frame obscures the gauge.•Poor portability.

Best features•Portability.•Low vibration.•Pump oil reservoir visibility.•A turbo lance is fitted as standard.

Worst features•Restricted engine service access (oil

filler and drain plug).•Rope-pull is obscured by frame.

Gerni 118P (petrol)

Gerni 600P (petrol)

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intentionally blank



K.a.rcher swash-plate pumpmachines performed well

under test conditions but thepressure gauge could not beinstalled due to the design of thismodel.

Both electric machines (theK630MS and HD650) had gaugesfitted in the lances but these wereinaccurate. The Kondinin Grouppanel could not install test gaugesin line due to the crimped hoseconnections.

Although small in size, theK630MS incorporated someoutstanding features not seen onany other machine tested.

The test panel was particularlyimpressed with the high-pressurehose reel and lance storage andclaimed this machine highly for its ease-of-use and portability.

Another feature was theinclusion of a user video, outliningits operation and safety.

The cleaner almost reached itsclaimed flow output of 8.7L/minbut Kondinin Group engineerscould not confirm the maximumpressure due to the inability toconnect the test gauge. But thisunit did record a higher targetforce of 1.0kgf than most of theother smaller pressure cleanerstested.

The detergent system usedtablets instead of a liquid supply.


Manufacturer’s commentThe detergent tablets provide safe

handling. Liquids can also be beput into the detergent storage tank.

In flow rate tests, the electricK.a.rcher HD650 exceeded its

manufacturer-rated 9.2L/min flowby 10%.

Maximum pressure was slightlybelow its specification of14,990kPa, recording 13,850kPain tests.

The Kondinin Group test panelwas impressed by the compact andrelatively powerful machine,noting the high visibility of theseparate oil reservoir for thepump.

This machine scored 1.6kgf onthe target test.

The lance could be adjustedeasily from jet to fan spraypatterns.

The low-pressure detergentfeed was also easy to adjust.


Manufacturer’s commentThis is one of K.a.rcher’s most

used cold water machines.

Best features•Hose and lance storage.•Auto-stop cut-out with a visible switch.•Good power-to-size combination.•Adjustable lance.

Worst features•Inaccurate pressure gauge on the lance.

Best features•Hose reel and lance storage.•User video.•Accessories supplied as standard (turbo

lance, brush washer).•Portability.•Auto-stop cut-out with visible switch.

Worst features•Inaccurate pressure gauge on the lance.•Plastic frame is out of alignment.

K.a.rcher K630MS (electric) K

.a.rcher HD650 (electric)

The HD1040B failed to meetits specified pressure of

20,980kPa but exceeded itsmaximum flow rate, recording15.1L/min.

At 3220rpm, the 8.2kWmachine was one of the slowerrunning engines at maximumpressure output.

The panel was impressed by thetrolley frame and handles, whichprovided excellent hose and lancestorage and manoeuvrability intight areas. The panel also

praised the manufacturers forincluding adequate warning andoperation signs on this modelwhich were unfortunately lackingfrom most of the cleaners tested.


Manufacturer’s commentMaximum pressures quoted

advise at what pressure the machine’ssafety devices activate. Therefore, thebuyer knows what nozzle sizes andaccessories can be fitted.

Although the HD1050Bpressure cleaner was similar

to the HD1040B petrol model, theuse of a 9.7kW motor (as opposedto 8.2kW) and pressure governingsystem made the operation totallydifferent.

For example, when the triggeris released on a normal petrolpowered cleaner, the unloadervalve (bypass) cuts the pressure inthe pump and the engine speedincreases.

With the pressure-governingsystem, as soon as the trigger isreleased the engine automaticallyidles at 2300rpm, only to increaseto 3400rpm after cleaning restarts.This saves both fuel and wear onthe engine and pump.

But this model failed to meet its maximum pressure of22,980kPa recording 20,670kPa

and the target pressure testshowed an increase of only 0.1kgfover the 3.9kgf of the 8.2kWmodel.

The petrol powered HD801Bwas unavailable for testing andwas replaced by the largerHD1050B.


ContactK.a.rcherPhone: (03) 9790 4300Fax: (03) 9790 4399.

Manufacturer’s commentThe HD1050B is a full industrial

model as shown by the KondininGroup tests. The motor size is forlongevity, not extra performance,hence the reduction in revolutionsper minute.

Best features•Pressure-governing system.•Hose and lance storage.•Easy-to-adjust lance.•Portability.

Worst features•The pressure gauge is difficult to

see from a distance.•There is no real increase in cleaning power despite an extra

1.5kW of power.•Engine sump plug is difficult to access.

Best features•Hose and lance storage.•Easy-to-adjust lance.•Portability.•Signs.

Worst features•The pressure gauge is difficult to see

from a distance.•Engine sump plug is difficult to access.

K.a.rcher HD1040B (petrol)

K.a.rcher HD1050B (petrol)



The Kerrick Quiky 890 is acompact but heavy unit at

22kg which can mistakenly appearlightweight.

Nevertheless, the Quiky is still aportable and easy machine to use,achieving its claimed flow rate of8L/min at high-pressure.

The claimed pressure of8960kPa was easily exceeded, theQuiky recording 10,340kPa.

The detergent system workedwell but had to be activated byadjusting the pressure relief valveat the machine instead of ahandpiece adjustment. Thedetergent meter requires careful

monitoring as when fully open thesystem could use 1.6L in oneminute.

This cleaner is identical to theBoxjet model supplied byInterpump (not tested).


Manufacturer’s commentKerrick is happy with the results

on this heavyweight portablemachine. They show it operatingwell over specifications. It cannot bemade lighter as it is a pump andmotor unit. Extra heavy-duty hose isavailable.

The electric DS1530 is a strongcleaning unit with inbuilt

detergent tank and auto-stop cut-out.

On the downside, the auto-stopswitch was not visible to theoperator. The panel also ratedthis as a poor design layout for theswitches.

This machine has a stylishframe with storage for the hoseand lance but the test panel foundthe unit was not well-balancedand had poor manoeuvrability.For its high output, the motoronly used 9.8 amps under testconditions.

The claimed pressure of10,340kPa was achieved with themachine recording 11,020kPaduring testing.

Similarly, the 11.6L/min flowrate was higher than the rated10L/min.


Manufacturer’s commentAnother good result for the

Kerrick DS1530 electric model.Savings are made on electricalconsumption due to the lowamps drawn.

Best features•Auto-stop cut-out.•Quiet and smooth operation.•Inbuilt detergent tank.•Storage for lance and hose.

Worst features•Poor layout of switch and

detergent dial.•Poor balance.

Best features•Compact and portable.•Simple to operate.

Worst features•A heavy unit (22kg).•The trigger is heavy and uncomfortable.•The high-pressure hose is flimsy and

tends to kink.

Kerrick Quiky 890 (electric) Kerrick DS1530 (electric)

Except for the incorporation ofa step-down gearbox between

the 9.7kW engine and the pump,the Kerrick HH3017 petrol-drivenpressure cleaner is an almostidentical but larger version ofthe 4.1kW Kerrick HH2011petrol model.

This unit performed faultlesslyduring testing, and recorded thehighest target force (at 4.9kgf) outof all machines tested. Althoughclaimed at 17L/min for itsmaximum flow, this unit recorded19.7L/min under low pressureflow testing.

Rope-pull access was greatlyimproved on this model compared

with the Kerrick HH2011 pressurecleaner.


ContactKerrickPhone: (02) 9737 9797Fax: (02) 9737 9898.

Manufacturer’s commentThe unit performed at and above

specifications in all areas. It alsoshows it as being one of the highestcleaning power machines (5.37kW)of all those tested. Kerrick is happywith the results.

Best features•Lance and hose.•Highly visible pressure gauge

and pump oil window.•Galvanised frame.•Powerful cleaning output.

Worst features•No storage for hose, lance or

detergent bottle.•Portability hindered by low

frame height.

Kerrick HH3017 (petrol)At 3850rpm the 4.1kW Kerrick

HH2011 pressure cleaner failed to reach its manufacturer-claimed output of 13780kPa,recording only 12,540kPa duringtesting.

At low pressure, the maximumflow rate was also belowspecification.

The maximum flow rate of9L/min was also below the specifiedrate of 11L/min.

Operators need to take care toavoid wasting detergent as thedetergent injection system can useup to 2L in one minute on amaximum setting.

There is no storage for thedetergent bottle provided.

The unit’s frame was well-constructed but it did notprotect the output fitting fromdamage.

In addition, the rope-pull washidden well behind the frame.


Manufacturer’s commentThe unit supplied needed to be

set up better, bearing in mind theseunits were new. Frame design isbeing addressed.

Kerrick HH2011 (petrol)

Best features•Excellent lance and hose.•Highly visible pressure

gauge and pump oilwindow.

•Zinc plated frame.

Worst features•Poor rope-pull access.•No storage for hose,

lance or detergent bottle.•Portability hindered by low

frame height.



The KEW 9100 achieved its8.7L/min flow rate but it was

not possible to install the testgauge in the pump head due tothe machine’s design which meantthe claimed pressure could not beconfirmed.

Attempts to relocate the test gauge in line with the high-pressure hose also failed toprovide an accurate result.

The pump unit itself was smallafter the plastic covers wereremoved. This was reflected inthe target test, with the 9100model scoring a low 0.5kgf.

The on-off switch was large andcumbersome, requiring severalmechanical links to connect it to the operating switch deep inside the unit.

The test panel found thedetergent system easy-to-adjustand use, and praised the fold-out hook to hold thedetergent.


Manufacturer’s commentThe manufacturer has viewed

this report.

Kondinin Group tests showedthe KEW 30CA fell below

its specified pressure and flow outputs 14,990kPa and10L/min, recording 13,440kPa and9L/min.

Despite these low outputresults it was still a powerful 10-amp cleaning unit, scoringhighly on the target force test at 1.55kgf.

The 30CA had a gooddetergent system and alsofeatured quick release couplingson the high and low pressurehoses and the lance, enabling

quick setup and change ofaccessories. The switch was alsoclearly visible from a distance andto distinguish whether it was inthe on or off position.


ContactAltoPhone: (02) 9524 6122Fax: (02) 9524 5256.


this report.

Best features•Auto-stop cut-out with visible on-off

switch.•Quick release couplings.•Portability and storage.•Easy-to-use lance.

Worst features•Nozzle jet cannot be removed for

cleaning.•Failed to achieve specified ratings.

Best features•Easy-to-use detergent system.•Easy to transport and store.•Auto-stop cut-out.

Worst features•Low cleaning power.•Poor switch visibility (same

position for on and off).•No pressure gauge fitted.•Hard-to-adjust nozzle.

KEW 9100 (electric) KEW 30CA (electric)

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intentionally blank


� � � � �

The electric KXM135 andpetrol-driven Pacific Pumps

models XL20 and XL40 all failedto achieve their manufacturer-claimed maximum pressures of10,335kPa, 13,780kPa and20,670kPa respectively.

The KXM135 was one of the smaller domestic modelpressure cleaners tested by theKondinin Group and achievedabout 80% of its maximumpressure output claimed by themanufacturer.

The maximum flow rate wasalmost achieved at high-pressureduring testing.

If there was a low-pressuresetting on the KXM135 machinethen this specification could be met.

The Kondinin Group test panelstated that the supplied turbolance could not be operatedeffectively by this machine due tolow output.



this report and the commentappears below.

The K300MTS electricpressure cleaner was a strong

performer in both pressure andflow rate tests. achieving its12,060kPa and 11L/min ratingswith ease.

Although basic in appearance,the machine was robust andpractical.

The plastic cover was easy to remove, providing access to the electric motor and Cometpiston pump.

While fitted with an auto-stop cut-out, it was impossible foroperators to see if the machinewas switched on or off. This could be dangerous if attempts

were made to disconnect the high-pressure hose or lance while the machine was in standbymode.

The auto-stop shut the machinedown after about 30 secondswhich was seen as a power-savingfeature. This would reduce theamount of times the machine cutin and out.



this report and the commentappears below.

Best features•Powerful.•Auto-stop cut-out.•Quiet operation.

Worst features•Poor switch on-off position visibility.•No swivels on high-pressure

hose.•Poor lance storage.

Best features•Light and portable.•Good lance with sturdy grip and

smooth nozzle adjustment.

Worst features•A flimsy handle does not stay

locked when in the extendedposition.

•Short power cord.•No detergent system fitted.

Pacific Pumps KXM135 (electric) Pacific Pumps K300MTS (electric)

The 4.1kW petrol-driven XL20model only achieved a

maximum pressure of 11,024kPaagainst its claimed output of13,780kPa.

As this Pacific Pumps modelwas the only petrol unit tested not to have a low-pressure settingon the lance, a low-pressure flowrate could not be recorded.

But low-pressure can beachieved by adjusting the bypassvalve.

The machine operatedunevenly on full bypass, with thepressure and engine speedfluctuating.

The Kondinin Group test panelwas impressed by the inclusion ofa safety warning sign which couldbe displayed where the cleanerwas most used.

The sign was included with theoperator’s manual for both theXL20 and XL40 pressurecleaners.


Manufacturer’s commentThe results may be due to the

machine not being adjusted for usebefore delivery for the KondininGroup tests.

Pacific Pumps’ 9.7kW modelXL40 performed below its

claimed maximum pressure of20,670kPa, recording 17,220kPaduring testing.

But it was still a powerfulcleaner, according to KondininGroup tests.

The machine was wellconstructed with a roll cageincorporating a position to store the detergent bottle. The detergent metering systemtended to vibrate open, makingadjustment difficult. The testpanel found the nozzle adjusted

easily from fan to jet spraypatterns and also from low- tohigh-pressure.


ContactEngineered Products GroupPhone: 1800 15 0428.

Manufacturer’s commentThese units may not have

received pre-delivery adjustmentsbefore testing. This may accountfor differences in and measured testresults.

Best features•Well-built unit.•Cage protects the cleaner.•Built-in detergent bottle holder.•Lance nozzle adjustments.

Worst features•Difficult detergent metering

adjustment.•No storage for hose or lance.•Pressure and flow rates failed to

meet specifications.

Best features•Easy service access.•Well-balanced and portable.•Handles double as hose

storage.

Worst features•No chemical injection.•No low-pressure setting on

the lance.•Frame obscures the rope-pull.•Poor bypass running.

Pacific Pumps XL20 (petrol)Pacific Pumps XL40 (petrol)

Pressure cleaners...



The HP110 was a quiet runningmachine, meeting its claimed

11,020kPa pressure and recording11.6L/min (12L/min specified) forflow rates.

The test panel praised the unit’squality construction including avisible pressure gauge anddetergent bottle basket. Thepressed steel cover protects themotor and pump.

Both the electric and petrolmodels incorporate bypass tankson the intake side of the pump.This allows water to circulatewhen operating in bypass mode,avoiding overheating.

The water level is maintainedby a float valve, which needed

a reasonable amount of intakepressure to operate. Thedownside is that the machinecannot operate on lower pressurefeeds such as the constant headtank used in all other tests andcannot draw intake water undersuction. It was claimed the tankcould be disconnected in such asituation but care was required toavoid bypass running.



this report and will endeavour toimprove the items listed as worstfeatures.

The 9.7kW Spitwater HP201Amodel exceeded both its

claimed pressure and flow ratespecifications.

Kondinin Group tests recorded21,368kPa for pressure and15.4L/min for the flow rate. Themanufacturer’s ratings were20,670kPa and 15L/min.

The step-down gearbox allowedthe pump to operate at a leisurely1575rpm. As with Spitwater’sHP110 unit, the constant head test tank could not be used due tothe bypass tank fitted to themachine.

Overall, this machine was well-presented and constructed

but the frame almost obscures the pressure gauge fitted to thepump head.


ContactAussie Spray and BlastPhone: (08) 9379 3300Fax: (08) 9379 3301.


this report and is happy with thecontent. Spitwater will endeavourto improve the items listed as worstfeatures.

Best features•Sturdy construction with basket

for a detergent bottle.•High output.•Bypass tank.

Worst features•Poor location of the pressure gauge.•Inlet hose requires disconnecting

to use low-pressure or suction feed water.

Best features•Robust construction.•Detergent bottle basket included.•Visible oil window and pressure gauge.•Bypass tank.

Worst features•Inlet hose requires disconnecting to use

low-pressure or suction feed water.•Heavy unit.

Spitwater HP110 (electric) Spitwater HP210A (petrol)

The Scorpion is a rugged,understressed machine with a

well-balanced trolley. A large flexible drive coupling

is used to eliminate vibration andreduce shock loading on thepump. The test panelcommended the heavy-duty high-pressure hose as a usefuladdition.

Under test conditions theScorpion 1500 electric-poweredmodel exceeded performancespecifications.

The 1.75kW induction motor ofthe Scorpion was quiet inoperation and well-protectedfrom thermal overload by safety

switches in both the motor andheavy-duty direct on line (DOL)starter switch.

Although lower in outputpressure (9990kPa) than some of the other electric pressurecleaners, its higher measured flowrate of 11L/min more thancompensated for this.


Manufacturer’s commentThe standard length lance is

400mm but optional lengths of800mm, 1000mm and 1200mm areavailable. The electric motor andswitch are weather- and spray- proof.

The Kondinin Group test panelfound the 9.7kW Huntsman

was one of the easiest machines touse out of the petrol-drivenpressure cleaners tested.

Under test conditions, theHuntsman slightly exceeded bothits maximum claimed pressureand flow rates. Tests measuredthe pressure at 20,670kPa and theflow rate at 15.6L/min — morethan its claimed output of19,990kPa and 15L/min.

The step-down drive to thepump is driven by the enginecamshaft, eliminating the needfor a separate gearbox. The pumpspeed of 1375rpm was the lowestrecorded in tests.

A castor wheel enhanced itsportability and handles provided

hose storage. The panel alsopraised the performance of thelance and the inclusion of hosestorage on the unit.


ContactPressure MastersPhone: (08) 9451 3544Fax: (08) 9451 2774.

Manufacturer’s commentPressure Masters will change the

nozzle size currently fitted to increasethe high-pressure flow rate andsubsequently cleaning power. Thestandard length lance is 400mm but optional length lances of 800mm, 1000mm and 1200mm areavailable.

Best features•Portability.•Camshaft reduction drive to pump.•Lance and hose storage.

Worst feature•Short lance.

Best features•Portability.•Rugged construction.•Understressed motor.•High-pressure hose.

Worst features•Short lance is a safety hazard.•Lacks a waterproof cover over

the pump and motor.

Pressure Masters Scorpion 1500 (electric) Pressure Masters Huntsman 3000 (petrol)



Stihl’s RE125K pressurecleaner achieved its maximum

rated pressure, recording13,040kPa during tests.

But there was confusion aboutthe specified maximum flow rateas different measures werewritten on the pump and in thepublished specifications. Thepump rating of 7L/min at low-pressure was achieved. But thiswas below the publishedspecification of 7.7L/min.

Despite the unit operating at13,040kPa, the panel believed the low flow rate of 6L/min athigh-pressure was not sufficient to effectively operate the suppliedturbo nozzle. The panel praisedthe machine’s construction but

criticised the switch which wasdifficult to identify as being off orin standby mode.


ContactStihlPhone: (03) 9215 6666Fax: (03) 9763 4423.

Manufacturer’s commentThe rotor nozzle supplied was

returned to Stihl and was found tobe clogged. After servicing thenozzle worked perfectly. A possiblecause for the lack of performance isdirt in the pump valves. Specialistdealer pre-delivery and servicing willensure products operate correctly.

The RE270K failed to achieveits rated 9990kPa pressure,

instead recording a maximum of8610kPa during testing.

But the cleaning power wasboosted by a good 10L/min flowrate. The switch on this model islarge and clearly visible, anessential feature for an auto-stopmachine.

The RE 270K used very highcurrent at startup. With the lancetrigger depressed (to unload thepump) and the voltage set toexactly 240 volts, the capacitorstart induction motor usedmore than 40 amps when switchedon. Farmers with low supplyvoltage problems may see this as aserious issue.

During normal operation, themachine used 9.3 amps of power.The RE160K model (not testeddue to its similarity to theRE270K) also had a high startingcurrent.


Manufacturer’s commentStartup current draw lasts less

than one second. Under 240Voperating conditions, the RE270Kconforms to Australian Standards.A worn pressure delivery nozzle willcause lower than normal pressureperformance. The products testedwere demonstration units whichhad not undergone pre-deliverychecks by specialist dealers.

Best features•Auto-stop cut-out.•The hose, cord and lance can be

stored easily on the machine.•Integrated detergent tank.•Large visible switch.

Worst feature•High startup current.

Best features•Auto-stop cut-out.•The hose, cord and lance can be stored

on the machine.•Integrated detergent tank.

Worst features•Turbo lance did not operate effectively.•Low flow rate.•Poor switch on-off position visibility.

Stihl RE125K (electric)Stihl RE270K (electric)

Acknowledgements: Tony Hiscock, Farmsafe, consultants Dave Barret, Bradley Eatt, Randall Anderson and Simon Wallwork, Kondinin Group.

Research: Josh Giumelli and Kim Barnett.

The Wasp C110E electriccleaner performed strongly in

all tests to meet its 11,020kPamaximum pressure and exceedingits 11.7L/min flow rate with aresult of 13.7L/min.

Drawing 10.6 amps of power,this powerful cleaner showedcharacteristics of machines usingabout 14 amps.

The test panel was particularlyimpressed with its easilyinterchangeable lance and racksfor hanging hoses and cords.

This was considered a safepressure cleaner to use andincluded a well-written operator’smanual and a comprehensiveparts list.

The Wasp electric pressurecleaners are manufactured byDen Sin.



this report.

The petrol-driven Wasp cleanerperformed reasonably well

under test conditions achieving its15,500kPa pressure and 12L/minflow rate.

It was the only 4.8kW machinetested and the small increase inpower it showed over the 4.1kWmodels was noticeable inimproved flow rates.

The detergent system faileddue to excessive clearancebetween the nipple insert and thepump body, allowing the intake of air.

The petrol-driven range isassembled using Inter-triplexpiston pumps.


ContactAtkins Capital EquipmentPhone: (08) 9270 2200Fax: (08) 9270 2531.

Manufacturer’s commentA new lance is being fitted which

will increase the output pressure to16,540kPa.

Best features•Slight increase in engine power.•Well-built frame with fold-down

handle.

Worst features•Detergent system.•Lightly constructed lance.

Best features•Lance and nozzles.•High flow rate.•Snap couplings on hoses and between the

lance and the handpiece.•Cover can be removed easily.

Worst features•Lack of a chemical injection

system.•No auto-stop cut-out.•Poor lance storage.

Wasp HP150-12WR (petrol)Wasp C110E (electric)

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