rhino efd bulk unloaders -...

Rhino� EFDBulk Unloaders

Customer Product ManualPart 1073869A

Issued 7/07

NORDSON CORPORATION • AMHERST, OHIO • USA

Part 1073869A � 2007 Nordson Corporation

Safety 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Qualified Personnel 1. . . . . . . . . . . . . . . . . . . . . . . Intended Use 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . Halogenated Hydrocarbon Solvent Hazards 1. . . Regulations and Approvals 1. . . . . . . . . . . . . . . . . Personal Safety 1. . . . . . . . . . . . . . . . . . . . . . . . . . . Fire Safety 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Action in the Event of a Malfunction 2. . . . . . . . . . High-Pressure Fluids 2. . . . . . . . . . . . . . . . . . . . . . Disposal 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Using this Manual 3. . . . . . . . . . . . . . . . . . . . . . . . . . . Description 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Theory of Operation 5. . . . . . . . . . . . . . . . . . . . . . . Basic Operation 5. . . . . . . . . . . . . . . . . . . . . . . . . Pneumatic Controls 5. . . . . . . . . . . . . . . . . . . . . Air Motor Supply 6. . . . . . . . . . . . . . . . . . . . . . . . Elevator and Blowoff Air Supply 6. . . . . . . . . . .

Installation 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operation 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

First-Time Startup 8. . . . . . . . . . . . . . . . . . . . . . . . . Bleed the Pump 8. . . . . . . . . . . . . . . . . . . . . . . . . . . Routine Operating Procedures 10. . . . . . . . . . . . . .

Daily Startup 10. . . . . . . . . . . . . . . . . . . . . . . . . . . Temporary Shutdown 10. . . . . . . . . . . . . . . . . . . Restart After Temporary Shutdown 10. . . . . . . .

Changing a Container 10. . . . . . . . . . . . . . . . . . . . . . Remove the Old Container 10. . . . . . . . . . . . . . Install a New Container 10. . . . . . . . . . . . . . . . . .

Maintenance 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Troubleshooting 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . Parts 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-Gallon Pail Unloaders 16. . . . . . . . . . . . . . . . . . . . 55-Gallon Drum Unloaders 19. . . . . . . . . . . . . . . . .

Pneumatic Schematics 23. . . . . . . . . . . . . . . . . . . . . .

Contact UsNordson Corporation welcomes requests for information, comments, andinquiries about its products. General information about Nordson can befound on the Internet using the following address:http://www.nordson.com.Address all correspondence to:

Nordson CorporationAttn: Customer Service555 Jackson StreetAmherst, OH 44001

NoticeThis is a Nordson Corporation publication which is protected by copyright.Original copyright date 2007. No part of this document may bephotocopied, reproduced, or translated to another language without theprior written consent of Nordson Corporation. The information containedin this publication is subject to change without notice.

Trademarks

Nordson the Nordson logo, and Rhino are registered trademarks of Nordson Corporation.

All other trademarks are the property of their respective owners.

Rhino EFD Bulk Unloaders 1

Part 1073869A� 2007 Nordson Corporation

Safety Read and follow these safety instructions. Task- andequipment-specific warnings, cautions, and instructionsare included in equipment documentation whereappropriate.

Make sure all equipment documentation, including theseinstructions, is accessible to persons operating orservicing equipment.

Qualified Personnel Equipment owners are responsible for making sure thatNordson equipment is installed, operated, and servicedby qualified personnel. Qualified personnel are thoseemployees or contractors who are trained to safelyperform their assigned tasks. They are familiar with allrelevant safety rules and regulations and are physicallycapable of performing their assigned tasks.

Intended Use Use of Nordson equipment in ways other than thosedescribed in the documentation supplied with theequipment may result in injury to persons or damage toproperty.

Some examples of unintended use of equipment include

� using incompatible materials

� making unauthorized modifications

� removing or bypassing safety guards or interlocks

� using incompatible or damaged parts

� using unapproved auxiliary equipment

� operating equipment in excess of maximum ratings

Halogenated HydrocarbonSolvent Hazards Do not use halogenated hydrocarbon solvents in apressurized system that contains aluminum components.Under pressure, these solvents can react with aluminumand explode, causing injury, death, or property damage.Halogenated hydrocarbon solvents contain one or moreof the following elements:

Element Symbol Prefix

Fluorine F “Fluoro-”

Chlorine Cl “Chloro-”

Bromine Br “Bromo-”

Iodine I “Iodo-”

Check your material Material Safety Data Sheets(MSDS) or contact your material supplier for moreinformation. If you must use halogenated hydrocarbonsolvents, contact your Nordson representative forinformation about compatible Nordson components.

Regulations and Approvals Make sure all equipment is rated and approved for theenvironment in which it is used. Any approvals obtainedfor Nordson equipment will be voided if instructions forinstallation, operation, and service are not followed.

Personal Safety To prevent injury follow these instructions.

� Do not operate or service equipment unless you arequalified.

� Do not operate equipment unless safety guards,doors, or covers are intact and automatic interlocksare operating properly. Do not bypass or disarm anysafety devices.

� Keep clear of moving equipment. Before adjusting orservicing moving equipment, shut off the powersupply and wait until the equipment comes to acomplete stop. Lock out power and secure theequipment to prevent unexpected movement.

� Relieve (bleed off) hydraulic and pneumatic pressurebefore adjusting or servicing pressurized systems orcomponents. Disconnect, lock out, and tag switchesbefore servicing electrical equipment.

� While operating manual spray guns, make sure youare grounded. Wear electrically conductive gloves ora grounding strap connected to the gun handle orother true earth ground. Do not wear or carrymetallic objects such as jewelry or tools.

� If you receive even a slight electrical shock, shutdown all electrical or electrostatic equipmentimmediately. Do not restart the equipment until theproblem has been identified and corrected.

� Obtain and read the MSDS for all materials used.Follow the manufacturer’s instructions for safehandling and use of materials, and userecommended personal protection devices.

� Make sure the spray area is adequately ventilated.

� To prevent injury, be aware of less-obvious dangersin the workplace that often cannot be completelyeliminated, such as hot surfaces, sharp edges,energized electrical circuits, and moving parts thatcannot be enclosed or otherwise guarded forpractical reasons.

Rhino EFD Bulk Unloaders2


Fire Safety To avoid a fire or explosion, follow these instructions.

� Ground all conductive equipment. Use onlygrounded air and fluid hoses. Check equipment andworkpiece grounding devices regularly. Resistanceto ground must not exceed one megohm.

� Shut down all equipment immediately if you noticestatic sparking or arcing. Do not restart theequipment until the cause has been identified andcorrected.

� Do not smoke, weld, grind, or use open flameswhere flammable materials are being used or stored.

� Do not heat materials to temperatures above thoserecommended by the manufacturer. Make sure heatmonitoring and limiting devices are working properly.

� Provide adequate ventilation to prevent dangerousconcentrations of volatile particles or vapors. Referto local codes or your material MSDS for guidance.

� Do not disconnect live electrical circuits whenworking with flammable materials. Shut off power ata disconnect switch first to prevent sparking.

� Know where emergency stop buttons, shutoff valves,and fire extinguishers are located. If a fire starts in aspray booth, immediately shut off the spray systemand exhaust fans.

� Shut off electrostatic power and ground the chargingsystem before adjusting, cleaning, or repairingelectrostatic equipment.

� Clean, maintain, test, and repair equipmentaccording to the instructions in your equipmentdocumentation.

� Use only replacement parts that are designed for usewith original equipment. Contact your Nordsonrepresentative for parts information and advice.

Action in the Eventof a Malfunction If a system or any equipment in a system malfunctions,shut off the system immediately and perform thefollowing steps:

� Disconnect and lock out system electrical power.Close hydraulic and pneumatic shutoff valves andrelieve pressures.

� Identify the reason for the malfunction and correct itbefore restarting the system.

High-Pressure Fluids High-pressure fluids, unless they are safely contained,are extremely hazardous. Always relieve fluid pressurebefore adjusting or servicing high pressure equipment. Ajet of high-pressure fluid can cut like a knife and causeserious bodily injury, amputation, or death. Fluidspenetrating the skin can also cause toxic poisoning.

If you suffer a fluid injection injury, seek medical careimmediately. If possible, provide a copy of the MSDS forthe injected fluid to the health care provider.

The National Spray Equipment ManufacturersAssociation has created a wallet card that you shouldcarry when you are operating high-pressure sprayequipment. These cards are supplied with yourequipment. The following is the text of this card:

WARNING: Any injury caused by high pressureliquid can be serious. If you are injured or evensuspect an injury:

� Go to an emergency room immediately.

� Tell the doctor that you suspect an injection injury.

� Show him this card

� Tell him what kind of material you were spraying

MEDICAL ALERT—AIRLESS SPRAY WOUNDS: NOTETO PHYSICIAN

Injection in the skin is a serious traumatic injury. It isimportant to treat the injury surgically as soon aspossible. Do not delay treatment to research toxicity.Toxicity is a concern with some exotic coatings injecteddirectly into the bloodstream.

Consultation with a plastic surgeon or a reconstructivehand surgeon may be advisable.

The seriousness of the wound depends on where theinjury is on the body, whether the substance hitsomething on its way in and deflected causing moredamage, and many other variables including skinmicroflora residing in the paint or gun which are blastedinto the wound. If the injected paint contains acrylic latexand titanium dioxide that damage the tissue’s resistanceto infection, bacterial growth will flourish. The treatmentthat doctors recommend for an injection injury to thehand includes immediate decompression of the closedvascular compartments of the hand to release theunderlying tissue distended by the injected paint,judicious wound debridement, and immediate antibiotictreatment.

Disposal Dispose of equipment and materials used in operationand servicing according to local codes.



Using this Manual

NOTE: Throughout this manual a Rhino EFD BulkUnloader is referred to as the unloader.

All information common to an unloader can be found inthis manual. Specific component information appears inthe following manuals:

� Rhino VE Frames

� Rhino SD2/XD2 Pump

� Rhino VE Bleed Valve

� Rhino VE Follower Plate Modules

Description See Figure 1. The unloaders pump a constant supply ofmaterial to dispensing applicators.

The unloaders are available with either a 48:1 or 65:1ratio pump:

Drum Unloader Pump Ratio

Pail 48:1 and 65:1

55-Gallon 48:1 and 65:1

See Figure 2 and refer to Table 1 for a description of themajor components.

PAIL DRUM UNLOADER

55-GALLON DRUM UNLOADER

Figure 1 Drum Unloaders



NEUTRAL

UP

DOWN

ELEVATOR CONTROLVALVE POSITIONS

A

BLOWOFF STEM

ELEVATOR

BLEEDER STEM

BLEED VALVE

FOLLOWER PLATE

DRUM CENTERING SHOE

PUMP

BLOWOFF HOSE

AND BLOWOFF PORT

SOLVENT CHAMBER

BLOWOFF VALVE

AELEVATOR AIRREGULATOR

AIR MOTORREGULATOR

ELEVATORCONTROLVALVE

PRESSURERELIEF VALVE

Figure 2 Drum Unloader Components (Typical)



Table 1 Unloader Major Components

Item Function

Air Motor and ElevatorAir Regulators

The air motor regulator controls the air to the pump. An optional pressure relief valve isused in the air supply circuit for the pump air motor when it is necessary to limit themaximum pump output pressure.

The elevator air regulator controls the air to the elevator cylinders.

Elevator Control Valve The elevator control valve initiates ram movement. Placing the valve in the

� UP position raises the elevator and follower plate.

� DOWN position lowers the elevator and follower plate assembly into thematerial container.

� NEUTRAL position stops elevator movement. NEUTRAL is not a locked and securedposition. The follower plate may drift downward over time.

Pump The pump is an air-operated, dual-acting positive-displacement pump. The pump consistsof an air motor and a hydraulic section. It can handle high-viscosity materials as well ascertain abrasive-filled materials.

Solvent Chamber The solvent chamber surrounds the pump plunger. The solvent chamber contains fluidthat lubricates the plunger and packing gland seals. This fluid keeps material fromhardening on the plunger and minimizes wear on the packing gland seals.

Bleed/Blowoff Port During material container changes, the bleed/blowoff port is used to relieve the airbetween the follower plate and the material container. When the bleeder stem is removed,air and material exits through the follower plate blowoff port.

Bleed Valve The bleed valve is designed for use as a bleed port at the highest point of the pumphydraulic section. This port is used to bleed air from the pump section during initial startupand container changes.

Follower Plate The follower plate has rubber seals that create a sealed compartment when lowered into amaterial container. The downward movement of the follower plate forces material into thehydraulic section of the pump.

Drum Centering Shoes The drum centering shoes are designed for positioning the material container below thefollower plate. Drum centering shoes are only available for large frames.

Blowoff Assembly The blowwoff assembly consists of the blowoff stem, blowoff hose, and blowoff valve Theblowoff stem connects to the blowoff port on the follower plate. The blowoff hose connectsto the blowoff stem. When the blowoff valve is activated, the blowoff stem forces airbeneath the bottom of the follower plate and into the container. This pressure forces thecontainer of off the follower.

Theory of Operation The following paragraphs provide a theory of operationfor the unloader.

Basic OperationA straight-sided container of adhesive or sealant materialis centered between the drum centering shoes and underthe follower plate. The elevator consists of two air-drivenpistons that lower the follower plate into the container ofmaterial. The rubber seals around the outer edge of thefollower plate create an airtight compartment below thefollower plate. Downward movement of the follower plateforces material into the hydraulic section of the pump.

Pneumatic ControlsRefer to the Pneumatic Schematics section to see theapplicable unloader pneumatic schematic.

The operating controls for the unloader are completelypneumatic. Clean, dry shop air filtered to 5 microns issupplied to two pressure regulators; one for the pump airmotor and one for the elevator cylinders and blowoffsupply.



Air Motor SupplyThe regulated air supply flows through a shut-off valvebefore it enters the pump air motor.

Unregulated air at full shop pressure is supplied to thepilot and intermediate valves. These valves supply pilotair to the main motor control valve. This higher pressuresignal air enables the air motor to make rapid directionalchanges regardless of the regulated supply air setting.

An optional pressure relief valve is used inline with theair motor supply to limit the pump output pressure. Thepressure relief valve is designed to vent at apre-determined setting whenever the air motor supplypressure exceeds the air motor regulator setting.Lowering the air motor supply pressure resets therelief valve.

NOTE: System pressure requirements may need to belimited due to component pressure ratings or othersystem requirements. A different pressure relief valve ofthe desired pressure range can be selected to preventthe system from being over pressurized.

Elevator and Blowoff Air SupplyThe regulated air supply for the elevator cylinders andand blow-off flows to a 3-position elevator control valve.The valve controls the flow of air to the elevatorcylinders. The elevator control valve has three positions:UP, DOWN, and NEUTRAL.

In the UP position, air enters the bottom of the leftcylinder and flows through the lower crossover tube tothe right cylinder. Air above the pistons is vented. Theair pressure forces the cylinder pistons upward, whichraises the follower plate and pump.

In the DOWN position, air enters the top of the leftcylinder and flows through the upper crossover tube tothe top of the right cylinder. Air below the pistons isvented. The air pressure forces the cylinder pistonsdownward, which lowers the follower plate and pump.

In the NEUTRAL position, there is no pressure to theframe cylinders. The follower plate should remainstationary, since the air pressure to both sides of thepiston is sealed.

NOTE: The NEUTRAL position is not a locked andsecured position. The follower plate may drift downwardover time.

The blowoff feature routes air under the follower plateduring the removal of an empty container. The blowoffassembly connects to the blowoff port. Pressing andholding the push button on the blowoff valve forces airunder the follower plate. The air pressure forces thecontainer off of the follower plate.

Installation Read and understand this entire section beforeperforming any installation procedures. Contact a localNordson representative if you have questions regardingthe installation of this equipment.

WARNING: Allow only qualified personnel toperform the following tasks. Follow the safetyinstructions in this document and all otherrelated documentation.

Review the following before installing the unloader into asystem:

� Install a customer-supplied shutoff valve in the airsupply line to isolate the unloader for maintenance orother procedures.

� The maximum main air supply pressureis 100 psi (7 bar).

� The main air supply to the unloader must be at least60 psi (4.83 bar) and filtered to 5 microns. Use a3/4-in. air line with an instantaneous flow rate of atleast 175 scfm. Refer to the Rhino SD2/XD2 Pumpsmanual for more data.

� The material outlet port on the pump is 11/4 in. SAEO-ring boss.

� Use hose supports in applications where the materialhose is suspended by an overhead tool balancer orsimilar device to prevent hose damage. Route thehose in a manner that prevents kinking and abrasion.

1. Remove the unloader (1) from the packing crate andpallet. Perform the following:

� Examine all surfaces for evidence of dents,scratches, corrosion, and other physical damage.

� Check the follower plate seals for damage.

� Report any damage to a Nordson representative.

2. Position the unloader at a location that allows accessto the controls and follower plate area.

3. Set the elevator regulator (6) and air motorregulator (3) to 0 psi/bar. Make sure that the elevatorcontrol valve (2) is in the NEUTRAL position and thatthe air motor ball valve (4) is closed.

4. 55-Gallon and Pail Drum Unloaders: Connect themain air supply line to the pneumatic supply port (5).Pail Drum Unloaders: Connect a fitting and themain air supply line to the elevator regulator port (7).

5. Connect the material hose to either the materialoutlet port (8) or the optional ball check valveport (9).

6. Add solvent chamber fluid to within 1.5 in. (38 mm)from the top of the solvent chamber (10). Refer tothe pump manual for the solvent chamber fluid typeand part number.



5

2

8

CONTROL VALVESHOWN IN THENEUTRAL POSITION

4

6

3

10

AIR MOTOR BALLVALVE SHOWN INTHE OPEN POSITION

9

A

AB

C

C

55-GALLON DRUM UNLOADER

1

CONTROL VALVESHOWN IN THENEUTRAL POSITION

AIR MOTOR BALLVALVE SHOWN INTHE OPEN POSITION

5

4

6

3

2

BPAIL DRUM UNLOADER

71/4 NPT

3/4 NPT

3/4 NPT

Figure 3 Installation



Operation Read and understand this entire section beforeperforming any operation procedures. Contact a localNordson representative if you have questions regardingthe operation of this equipment.


CAUTION: To prevent damge to the followerplate and seals, never use a damaged materialcontainer.

NOTE: When operating the elevator control valve it isimportant to remember that NEUTRAL is not a lockedand secured position. The follower plate may driftdownward over time.

First-Time Startup See Figure 4. This procedure applies only to starting upa new system for the first time.

1. Make sure that the solvent chamber (5) is properlyfilled with Solvent chamber fluid.

2. Place the elevator control valve (2) in theNEUTRAL position.

3. Set the air motor regulator (1) to 0 psi/bar.

4. Set the elevator regulator (3) to 30 psi (2 bar).

NOTE: It may be necessary to increase the cylinderpressure. When using high-viscosity material to ensureproper operation of the cylinder assembly and to preventthe pump from losing contact with the material. Use theminimum air pressure necessary to operate the elevator.

5. Make sure that the air hoses and material deliveryhose are not kinked or pinched.

6. Place the elevator control valve (2) in the UP positionto raise the follower plate (10).

7. Inspect the material container for dents or otherdamage. Do not use a damaged container.

CAUTION: To prevent damage to the followerplate seals, do not use use petroleum-basedproducts. Use O-ring grease.

8. Coat the follower plate seals (10) with O-ring grease.

9. Place the container of material between the drumcentering shoes (9) and center it under the followerplate (10).

10. Remove the bleeder stem (6) from the bleederstem/blowoff port (8) to relieve any air trapped underthe follower plate (10).

WARNING: Wear protective clothing, gloves,and safety glasses when lowering the followerplate into the container. The expelled air fromunder the follower plate may contain material.

11. Place the elevator control valve (2) in the DOWNposition and slowly lower the follower plate (9) intothe open container of material. To stop the followerplate, place the elevator control valve in theNEUTRAL position.

12. Perform the following:

a. When material begins to flow from the fitting onthe bleeder stem/blowoff port (8), place theelevator control valve in the NEUTRAL position.

b. Install the bleeder stem (6) into the bleederstem/blowoff port and tighten securely. Use arag to remove excess material around the thebleeder stem/blowoff port.

13. Place the elevator control valve (2) in the DOWNposition to force material into the pump.

14. Bleed the pump. Refer to the Bleed the Pumpprocedure in this section.

15. Make sure that the hose and applicator are securedand that the applicator is not pointing at anypersonnel in the area.

16. Trigger the applicator(s) to bleed off air in the lines.

17. Adjust the air motor regulator (1) to increasepressure until the pump begins to operate. Operatethe pump until the applicator dispenses material thatflows smoothly, continuously, and without airbubbles.

Bleed the PumpUse the following procedure to bleed the pump.

WARNING: To prevent personal injury, donot open the bleed valve more than two orthree turns.

1. Carefully loosen the bleed valve (7) only two or threeturns. Do not remove the bleed valve.

2. Leave the valve (7) open until the material flow iscontinuous and any trapped air in the hydraulicsection vents.

3. Tighten the bleed valve (7).



5

6

7

10

10

A

9

9

3

2

1

4

A

NEUTRAL

UP

DOWN


8

Figure 4 Typical First-Time Startup (55-Gallon Drum Unloader Shown)



Routine Operating Procedures NOTE: When operating the elevator control valve it isimportant to remember that NEUTRAL is not a lockedand secured position. The follower plate may driftdownward over time.

Daily Startup 1. Make sure that the air pressure to the system is off.


� Check the unit to determine if material is leakingpast the follower plate. If a follower plate seal isdamaged, refer to the Rhino VE Follower PlateModule manual for repair procedures.

� Check the amount of material in the container.Replace the container if necessary. Refer to theContainer Change procedure in this section.

� Check the solvent chamber fluid levels and fillif necessary.

3. Turn on the input air supply to the unit.

4. See Figure 5. Place the elevator control valve (3) inthe DOWN position.

5. If required, adjust the air motor regulator (5) to thedesired air supply pressure.

Temporary Shutdown 1. Turn off the input air supply to the unloader.


Restart After Temporary Shutdown 1. Turn on the input air supply to the unloader.

2. Place the elevator control valve (3) in theDOWN position.

Changing a Container See Figure 5 and use the following procedure to replacean empty container.

Remove the Old Container 1. Close the air motor ball valve (1).

2. Trigger the applicator(s) to relieve residualhydraulic pressure.


4. Remove the bleeder stem (6) and insert the blowoffadapter (10) into the follower port (7).

5. Connect the blowoff hose (11) to the blowoffadapter (10).

6. Place the elevator control valve (3) in theUP position.

7. Press and hold the blowoff valve push button (4)to force air below the follower plate (9).

NOTE: Perform the following if the container startsto rise off of the frame:

a. Place the elevator control valve (3) in theNEUTRAL position to straighten out thecontainer and lower it back onto the frame.

b. Place the elevator control valve (3) to the Upposition. If the container rises off of the frame,reduce the exhaust flow control until theelevator ram up speed matches the followerplate speed.

8. Once the follower plate (9) is clear of the container,release the blowoff valve push button (4). Leave theelevator control valve (3) in the UP position.

9. Disconnect the blowoff hose (11) from the blowoffadapter (10). Remove the empty container.

Install a New Container

CAUTION: To prevent damge to the followerplate and seals, never use a damaged materialcontainer.

1. Inspect the material container for dents or otherdamage. Do not use a damaged container.

CAUTION: To prevent damage to the followerplate seals, do not use use petroleum-basedproducts. Use O-ring grease.

2. Coat the follower plate (9) seals with O-ring grease.

WARNING: Wear protective clothing, gloves,and safety glasses when lowering the followerplate into the container. The expelled air fromunder the follower plate may contain material.

3. Place the container of material between the drumcentering shoes (8) and center it under the followerplate (9).

4. Place the elevator control valve (3) in the DOWNposition and slowly lower the follower plate (9) intothe open container of material. To stop the followerplate, place the elevator control valve in theNEUTRAL position.


a. When material begins to flow from the fitting onthe bleeder stem/blowoff port (7), place theelevator control valve in the NEUTRAL position.

b. Install the bleeder stem (6) into the bleederstem/blowoff port and tighten securely. Use arag to remove excess material around the thebleeder stem/blowoff port.



6. Place the elevator control valve (3) in the DOWNposition to force material into the pump.

7. Bleed the pump of trapped air that may have enteredduring the container change. Refer to the Bleed thePump procedure in this section.

6

9

11

8

8

1

2

4

5

3

10

7

NEUTRAL

UP

DOWN


A

A

Figure 5 Routine Operating Procedures (55-Gallon Drum Unloader Shown)



Maintenance This section details the preventive maintenanceprocedures for the unloader. The frequencies listed areonly guidelines. Always perform preventive maintenanceprocedures according to your facility maintenanceschedule.

It may be necessary to adjust frequencies due to thefacility enviornment, process parameters, material beingapplied, or experience.

WARNING: Never use halogenatedhydrocarbon solvents to clean aluminum parts,or to flush any system. Cleaning agents,coatings and paints, or adhesives may containhalogenated hydrocarbon solvents. Obtain andread the MSDS for each material and solventbeing used.

WARNING: Always relieve system pressurebefore servicing equipment. Trigger alldispensing devices and bleed offsystem pressure.

Frequency Item Task

Daily Material Supply Make sure that the material supply is free of dust and other contaminates.Contaminates may affect pump performance or clog the applicator.

Lines and Hoses Check all hydraulic and pneumatic connections and tighten them if required.Inspect all pneumatic tubing for bends or kinks.

Solvent Chamber Check the level of fluid in the solvent chamber. Refill the solvent chamber withfluid if necessary. Refer to the pump manual for the solvent chamber fluid typeand part number if necessary.

Customer-SuppliedAir Filter/Separator

Drain the accumulated water if necessary.

Weekly Drum Unloader Clean the top of the unloader cylinders. Clean any material from the top of thefollower plate and around the follower plate seals.

Follower Plate Seals Inspect the follower plate seals for damage or signs of excessive materialleakage and replace if necessary. Refer to the Rhino VE Follower PlateModule manual for replacement procedures.

Regulator Settings Check the air motor regulator and elevator regulator settings and adjust ifnecessary.

− − − − − − Pump Refer to the Rhino SD2/XD2 Pumps manual for maintenance procedures.



Troubleshooting These procedures cover only the most commonproblems that you may encounter. If you cannot solvethe problem with the information given here, contact yourlocal Nordson representative for help.


Problem Possible Cause Corrective Action

1. Air motor does not work.

NOTE: Refer to the RhinoSD2/XD2 Pumps manual forlocation of the components

No air supply; inadequate air supply. Check the air supply and operatingpressure.

SD2/XD2 Pumps manual forlocation of the componentsreferenced in theseprocedures.

Blocked hydraulic system. Check hoses, applicators, and othercomponents in the hydraulic system.

Air motor regulator malfunction. Check the air motor regulator and replaceif necessary.

Pilot valve not functioning. Perform the following:

1. Disconnect the signal and output airlines from the pilot valves.

2. Actuate the valve to verify that thepneumatic signal is present. Replacethe pilot valve if the pneumatic signalis not present.

Intermediate valve not functioning. Perform the following:

1. Lockout the air supply air to thedrum unloader.

2. Disconnect the signal and output airlines from the intermediate valve.

3. Connect an air gage to the end ofeach line.

4. Turn on the air supply to the airmotor. Manually cycle theintermediate valve.

5. Verify that the pneumatic signal isalternating between the air gages.Replace the intermediate valve if thepneumatic signal does not alternatebetween the air gages.

Air motor control valve not functioning. Check the pilot and intermediate valvesusing the If the pilot valves andintermediate valve are functioning,replace the air motor control valve.



Corrective ActionPossible CauseProblem

2. Air motor is leakingexcessively orconstantly.

NOTE: Refer to the RhinoSD2/XD2 Pumps manual forlocation of the components

Worn U-cup. Listen for air leaking from the upper andlower U-cup seal where the upper andlower piston rod exits the cylinder heads.Replace the U-cup seal if air leaks areheard. Refer to the pump manual for thereplacement procedures.SD2/XD2 Pumps manual for

location of the componentsreferenced in theseprocedures.

Air leaks from the air valveexhaust ports.

Replace the air motor control valve or theair motor piston. Refer to the RhinoSD2/XD2 Pumps manual for thereplacement procedures.

Worn pilot or intermediate valve. These valves cannot be repaired andmust be replaced. Order new valves.Refer to the Rhino SD2/XD2 Pumpsmanual for ordering information.

3. Elevator does not work. Malfunctioning elevator and blowoffregulator, or damaged elevatorcontrol valve.

Perform the following:

1. Set the elevator air regulatorto 0 psi/bar.

2. Disconnect the air supply.

3. Disconnect the tubing at the top andbottom of the control valve.

4. Connect the air supply. Setthe elevator regulator to10 psi (0.7 bar).

5. Operate the elevator control valve.Listen for air flowing from the tubingconnections. If air flow is not heard,replace the elevator control valve.

6. If there is not an air pressure readingat the gage, perform the following:

a. Shut off the air supply andremove the gage.

b. Turn on the air supply and checkfor air flowing from the regulator.If there is no air flow, replace theregulator.

7. Connect all components.

Elevator air cylinder seals worn ordamaged; piston is binding in cylinder.

If the problem was not solved using theabove procedure, rebuild the aircylinders. Refer to the Rhino VE Framesmanual for the rebuild procedures.



Corrective ActionPossible CauseProblem

4. Blowoff assembly is notworking.

No supply air pressure. Check the air supply. Make sure that theelevator control valve is in the UPposition when attempting to operate theblowoff feature.

Elevator air regulator or elevatorcontrol valve malfunctioning.

Refer to Problem 3, Elevator does notwork. for the corrective action.

Blowoff valve malfunctioning. Perform the following:

1. Set the elevator air regulatorto 0 psi/bar.

2. Loosen the blowoff hose at theblowoff valve.

3. Adjust the air pressure to10 psi (0.7 bar). Listen for airpressure at the loose connection. If

� no air is present, replace theblowoff valve.

� air is present, make sure that it isflowing out of the bottom of thefollower plate.

Blowoff adapter or hose cloggedwith material.

Check the blowoff adapter and hose forclogged material and clean if necessary.

5. Pump is not deliveringmaterial.

Insufficient air pressure to the pumpair motor.

Use the air motor regulator to increaseair pressure.

Follower plate is not in contact with thematerial.

Make sure that the elevator is in theDOWN position. Increase ram downpressure if necessary.

Pump hydraulic section has an airpocket.

Bleed the pump. Refer to the Bleed thePump procedure in the Operation section.

Blockage in the hydraulic system. Perform the following:

1. Shut down the pump and relieve thesystem pressure.

2. Remove the applicator from thesystem. Check the applicator forblockages. Replace or rebuild theapplicator if necessary.

3. Disconnect the material hose fromthe pump. Check the hose forblockages. Clean or replace the hoseif necessary.

4. If steps 1, 2, and 3 do not solve theproblem, remove and rebuild thepump. Refer to the pump manualsfor the procedures.



Parts To order parts, call the Nordson Customer ServiceCenter or your local Nordson representative.

5-Gallon Pail Unloaders See Figure 6 and the following parts list.

18

PART OF 10

10

11

3

21

15

22

16

20

19

23

17

15

24

29

30

31

32

33

35

36

34

12

25

5

37

1

2

27

27

27

27

27

27

27

27

2627

27

27

27

27

27

14

30

Figure 6 Rhino VE 5-Gallon Pail Unloader Parts



Item Part Description Qty Note— 1073418 Basic , Pail, Rhino SD2, EFD 48:1 1— 1075749 Basic , Pail, Rhino SD2, EFD 65:1 11 1072905 � Frame assembly, Pail, Rhino SD2 1 A

2 1072682 � Module, follower, 286 mm, 2.75 in. throat(FOR USE ON PAIL UNLOADER 1073418)

1 B

2 1072686 � Module, follower, 286 mm, 2.375 in. throat(FOR USE ON PAIL UNLOADERS 1075749)

1 B

3 805652 � Hose, air 1/4 ID 3.75 ft4 900571 � Tube, polyethylene, 1/4 OD bulk 5.5 ft5 1072908 � Module, hydraulic section, bleed valve, SD2, VE 1 C

6 1073854 � Pump, air motor assembly, 48:1, Rhino SD2(FOR USE ON PAIL UNLOADER 1073418)

1 D

6 1073853 � Pump, air motor assembly, 65:1, Rhino SD2(FOR USE ON PAIL UNLOADER 1075749)

1 D

7 1070032 � Module, pump mounting to frame, 5-gallon, SD2 1 D8 − − − − − − � Screw, drive, 0.187 29 − − − − − − � Plate, identification 1

10 1073256 � Coupler, disconnect, barb, Pushlok, 1/4 111 324046 � Hanger, hose 112 1073158 � U−bolt, clamp, pipe, 4-in, saddle 213 983061 � Washer, flat, 0.406 x 0.812 x 0.065 414 1076366 � Bracket, controls, basic, SD2, NAP 115 971265 � Connector, male, 1/4 tube x 1/4 NPT 216 1073433 � Valve, rotary, control, 3-position, 1/4 ports 117 973032 � Nipple, steel, schedule 40, 1/4, 2.50 118 1073268 � Gage, pressure, 0−60 psi, 1/8 NPT 119 126767 � Regulator, air, 0−60, 1/4 NPT 120 981140 � Screw, 10-32 x 1 421 1076291 � Muffler, flow−control, 1/4 NPT, 250 psi 122 973275 � Tee, pipe, 1/4, brass 123 973564 � Nipple, hex, 1/4 x 1/8 x 1.188 124 1073267 � Valve, poppet, air operated, 2-way, NC, 1/8 NPT 125 124787 � Button, push, manual 126 1073450 � Connector ,male, 1/4 hose, 1/8 NPT, barbed 127 900481 � Adhesive, pipe/thd/hyd sealant (PST) AR28 900439 � Adhesive, Loctite 271, red, hi-temp, 50 ml AR29 1073419 � Ell, pipe, hyd, 90, 3/4 130 972119 � Elbow, male, 1/4 tube x 1/8 NPT 231 1075980 � Regulator, 0−160 psi, ¾ NPT, mounting bracket 132 1026829 � Nipple, schedule 80, 3/4, close, plain 133 282776 � Valve, ball, vented, 3/4 NPT 134 228628 � Tee, street steel, 3/4 NPT 1

Continued...



NoteQtyDescriptionPartItem

35 1075770 � Valve, relief, 50 psi, 3/4 NPT, brass(FOR USE ON PAIL UNLOADER 1073418)

1

35 1075771 � Valve, relief, 40 psi, 3/4 NPT, brass(FOR USE ON PAIL UNLOADER 1075749)

1

36 972852 � Connector ,male, 3/4 hose, 3/4 NPT, barbed 137 282785 � Clamps, 11/2 ID 238 983504 � Washer, flat, 0.281 x 0.734 x 0.063, 14456-GA 239 124792 � Hose, 0.75 ID, 200 psi 2.7540 324289 � Strap, cable, 0.06−4.00, black 341 124795 � Fitting, hose, 3/4 barbed x 11/16 1

NOTE A: Refer to the Rhino VE Frames manual for a detailed parts list.

B: Refer to the Rhino VE Follower Modules manual for a detailed parts list.

C: Refer to the Rhino VE Bleed Valve instruction sheet for a detailed parts list.

D: Refer to the Rhino SD2/XD2 Pumps manual for a detailed parts list.

AR: As Required



55-Gallon Drum Unloaders See Figure 7 and the following parts list.

41 42

44

310

11

PART OF 10

33938

41

42

37

35

3833

32

31

30

13

2928

26

5825 24

23

22

55

21

1819

20

27

30

5

12

1

4

13, 14,15, 16, 17

6 78

9

2

2

A

A

54

56

57

56

5656

5656

56 56

5656

5656

Figure 7 Rhino VE 55-Gallon Drum Unloader Parts



40−45�

30−35�

2

54

9

45

4648

PART OF 48

49

195052

51

47

43

56

56

56

Figure 8 Rhino VE 55-Gallon Drum Unloader Parts (continued)



Item Part Description Qty Note— 1076263 Basic, 55, Rhino SD2, EFD 48:1 1— 1080296 Basic, 55, Rhino SD2, EFD 65:1 11 1069834 � Module, frame, 55-gallon, SD2 1 A2 900571 � Tube, polyethylene, 1/4 OD bulk 12 ft3 1045605 � Hose, air, 3/8 ID x 5/8 OD, 300 psi 5.1 ft

4 1072680 � Module, follower, 55 gallon, 2.75-in. throat, VE(FOR USE ON DRUM UNLOADER 1076263)

1 B

4 1072669 � Module, follower, 55 gallon, 2.75-in. throat, VE(FOR USE ON DRUM UNLOADER 1080296)

1 B

5 1073854 � Pump, air motor assembly, 48:1, Rhino SD2(FOR USE ON DRUM UNLOADER 1076263)

1 C

5 1073853 � Pump, air motor assembly, 65:1, Rhino SD2(FOR USE ON DRUM UNLOADER 1080296)

1 C

6 1069893 � Module, pump mounting to frame, 30/55 gallon, SD2 17 − − − − − − � Screw, drive, 0.187 28 − − − − − − � Plate, identification 19 124795 � Fitting, hose, 3/4 barbed x 11/16 2

10 1076422 � Coupler, disconnect, barbed, Pushlok, 3/8 tube 111 324046 � Hanger, hose 112 1072908 � Module, hydraulic section, bleed valve, SD2, VE 1 D13 1037239 � Nut, hex serrated, 5/8−11 414 345946 � Washer, flat, 0.656 x 2.250 x 0.160 415 1076812 � Plate, centering shoe, 55 gallon drum, NAP 616 1076588 � Shoe, centering, 55 gallon drum, NAP 217 1077072 � Screw, flat, socket, 5/8−11 x 2-1/2 4

18 1075770 � Valve, relief, 50 psi, 3/4 NPT, brass(FOR USE ON DRUM UNLOADER 1076263)

1

18 1075771 � Valve, relief, 40 psi, 3/4 NPT, brass(FOR USE ON DRUM UNLOADER 1080296)

1

19 972852 � Connector, male, 3/4 hose, 3/4 NPT, barbed 220 282776 � Valve, ball, vented, 3/4 NPT 121 1026829 � Nipple, schedule 80, 3/4, close, plain 122 228628 � Tee, street steel, 3/4 NPTF 123 1075980 � Regulator, 0−160 psi, 3/4 NPT, mounting bracket 124 1073419 � Ell, pipe, hydraulic, 90, 3/4 125 1073268 � Gage, pressure, 0−60 psi, 1/8 NPT 126 126767 � Regulator, air, 0−60,1/4 NPT 127 973032 � Nipple, steel, schedule 40, 1/4, 2.50 428 981140 � Screw, 10−32 x 1 429 1073433 � Valve, rotary, control, 3 position, 1/4 ports 130 971265 � Connector, male, 1/4 tube x 1/4 NPT 231 973564 � Nipple, hex, 1/4 x 1/8 x 1.188 132 972893 � Connector, male, 3/8 hose, 1/4 NPT, barbed 133 972685 � Adapter, 1/4−18 x 1/8−27, brass 134 1073267 � Valve, poppet, air operated, 2−way, NC, 1/8 NPT 135 124787 � Button, push, manual 136 973275 � Tee, pipe, 1/4, brass 137 1076291 � Muffler, flow−control, 1/4 NPT, 250 psi 138 981710 � Screw, hex, 3/8−16 x 0.750 439 983061 � Washer, flat 0.406 x 0.812 x 0.065 440 1076366 � Bracket, controls, basic, SD2, NAP 1

Continued...



Item Part Description Qty Note— 1076263 Basic , 55, Rhino SD2, EFD 48:1 1— 1080296 Basic, 55, Rhino SD2, EFD 65:1 141 345790 � Cap screw, socket head, 0.312−18 x 0.50 442 345935 � Washer, flat, 5/16 443 972119 � Elbow, male, 1/4 tube x 1/8 NPT 144 1076053 � Plate, mounting, regulator, 55 gallon, NAP 145 972105 � Connector, male, 37, 11/16−12 x 3/4 146 973222 � Elbow, pipe, 45, 3/4 147 327109 � Nipple, steel, schedule 40, 3/4 x 6 148 1076132 � Clamp, 3/4 in pipe 249 973510 � Coupling, pipe, class 150, 3/4 150 1076809 � Clamp, halves, 1−1/2 ID 151 1076841 � Plate, cover, 1−1/2 ID clamp 252 1077091 � Screw, hex, 1/4−20x 4.250 253 324289 � Strap, cable, 0.06−4, black 954 124792 � Hose, 0.75 ID, 200 psi 5.9 ft55 971899 � Tee, branch, 1/8 tube x 1/4 NPT 156 900481 � Adhesive, pipe/thd/hyd sealant (PST) AR57 900439 � Adhesive, Loctite 271, red, hi−temp, 50 ml AR58 971266 � Elbow, male, 0.25 tube x 0.25 NPT 1

NOTE A: Refer to the Rhino VE Frames manual for a detailed parts list.

B: Refer to the Rhino VE Follower Modules manual for a detailed parts list.

C: Refer to the Rhino SD2/XD2 Pumps manual for a detailed parts list.

D: Refer to the Rhino VE Bleed Valve instruction sheet for a detailed parts list.

AR: As Required



Pneumatic Schematics

AIR MOTOR SUPPLY

PILOT VALVE SUPPLY

3/4-IN AIR LINE

1/4-IN. AIR LINE

AIR SUPPLY IN

FOLLOWERPLATE

BULK UNLOADER FRAME

Rhino EFD Pail Size Frames Basic 48:1 and 65:1 Pneumatic Control Schematic

OPTIONALRELEIF VALVE

VENTED BALL VALVE

3/4 NPT REGULATOR

TO FOLLOWER PLATE

1/4 NPT REGULATOR

1/4 NPT

1/8 NPT POPPET VALVE

PILOT AIR SUPPLY

NON REGULATED

AIR MOTOR

REGULATED

AIR SUPPLY

FLOWCONTROLMUFLER

ROTARY CONTROL VALVE



Rhino EFD Large Frames Basic 48:1 and 65:1 Pneumatic Control Schematic

OPTIONALRELEIF VALVE

PILOT AIR SUPPLY

NON REGULATED

AIR MOTORBULK UNLOADER FRAME

FOLLOWER

PLATE

AIR SUPPLY IN

1/4-IN. AIR LINE

3/4-IN. AIR LINE

TO FOLLOWER PLATE

PILOT VALVE SUPPLY

AIR MOTOR SUPPLY

REGULATED

AIR SUPPLY

VENTED BALL VALVE3/4 NPT REGULATOR

1/4 NPT REGULATOR

1/8 NPT POPPET VALVE

1/4 NPTFLOWCONTROLMUFLER

ROTARY CONTROL VALVE

Issued 7/07

Original copyright date 2007.

Nordson, the Nordson logo, and Rhino are registered trademarks of Nordson Corporation.

All other trademarks are the property of their respective owner.

rhino efd bulk unloaders -...

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