pneumatic spray valve - zator · 2.3 risks, protecti ons, warnings and cauti ons 14 2.3.1 general...

MZFPNEUMATIC SPRAY VALVE

USER AND MAINTENANCE MANUAL

ZATOR SRL

Via Galvani, 1120095 Cusano Milanino (MI)

Italy

Tel. +39 02 66403235Fax +39 02 66403215

[email protected]

User and maintenance manualMZS_v01

MAY 2019

Declarati on of Conformity (All. IIA DIR. 2006/42/CE)

Manufacturer:ZATOR SrlVia Galvani 1120095 Cusano Milanino (MI) ItalyTel.+39 02 66403235 Fax +39 02 66403215 Email: [email protected]

DECLARESUnder its responsibility that the pneumati c spray valve:

Legal Representati veCusano Milanino

It’s in compliance with all regulati ons and conditi ons of security required by Directi ve 2006/42/CE concerning the machines as accepted by the nati onal legislati on with Legislati ve Decree of 27 January 2010 - No. 17.It’s in compliance with the conditi ons of the following other CE Directi ves:Directi ve 2004/108/CE of the European Parliament and the Council of 15 December 2004 concerning the reconciliati on of the member States legislati ons relati ve to electromagneti c compati bility.Directi ve 2006/95/CE of the European Parliament and the Council of 12 December 2006 concerning the reconciliati on of the member States legislati ons relati ve to electrical equipment designed for use within certain voltage limits.

Model MZS Code

Serial Number Year of manufacture

INDEX

1 GENERAL INFORMATION 8

1.1 Introducti on 8

1.2 Warranty 9

1.3 Warranty restricti ons 10

1.4 Maintenance service request 11

1.5 Spare parts request 11

2 SAFETY NORMS - CONFORMITY OF USE 12

2.1 Safety and environment general informati ons 13

2.2 P.P.E. Personal protecti ve equipment 13

2.3 Risks, protecti ons, warnings and cauti ons 14

2.3.1 General safety 14

2.3.2 Dangers and risks unavoidable 15

2.3.3 Safety devices adopted 16

2.3.4 More general safety precauti ons 16

2.4 Environmental conditi on 17

2.5 Installati on - General norms 19

2.6 Use of adhesives, glues or other fl uids 20

3 TECHNICAL DESCRIPTION 22

3.1 Valve functi ons 22

3.2 Technical data 22

3.3 Functi oning descripti on 23

4 INSTALLATION 24

4.1 Fixing and placement of the valve 24

4.2 Fluid supply connecti on 25

4.3 Electrical connecti on 25

4.3.1 Connector 25

4.4 Drive air connecti on and nebulizati on 26

4.5 Installati on diagram 26

4.6 Valve acti vati on 27

5 VALVE ADJUSTMENTS 28

5.1 Fluid quanti ty adjustment 28

5.2 Needle travel adjustment 28

5.3 Nebulizati on adjustment 29

6 MAINTENANCE 30

6.1 General norms 30

6.2 Maintenance program 30

6.3 Cleaning and/or replacement of the nozzle 31

6.4 Valve disassembly 33

6.5 Valve assembly 36

7 TROUBLE SHOOTING 39

8 MODELS 40

9 PARTS LIST 42

10 DIMENSIONS 44


PNEUMATIC SPRAY VALVEMZF


PNEUMATIC SPRAY VALVE MZS8

1 GENERAL INFORMATION

1.1 Introducti on

This manual is an essenti al part of the pneumati c valve and is desti ned to trained and well-informed personnel, which is aware of the machine performance at the risk conditi ons to which it may be exposed.This document supposes that in the plants where the valve is desti ned, are complied the present norms of safety and hygiene of the work.Zator Srl won’t be liable for acti ons or improper connecti ons made by unqualifi ed and unformed personnel.Instructi ons, drawings and documentati on contained in this manual are of reserved technical dispositi on, only for Zator Srl property and may be not reproduced in any way, neither in full or parti ally reproducti on; not translated into another language, or transmitt ed in any electronic or mechanical means or form, without writt en permission of Zator Srl.The data and values expressed in the manual are approximate and variable depending on fl uids, applicati ons and methods of use.Zator Srl doesn’t assume any responsibility regarding the accuracy of the contents of this manual.The drawings and technical data in this document is updated to the date of their publicati on and Zator srl reserves the right to change, without noti ce, the contents of this manual.It is therefore forbidden for Technician and Operators of the maintenance to use this manual for diff erent purposes from those relati ves to the care and maintenance of equipment in questi on.This manual includes the installati on, use and maintenance norms of the pneumati c valve in safety.

Test in producti on workshop

The manufacturer guarantees the valve, that this document refers, has been inspected and tested by his producti on workshop.

“At term of law we reserve the property of the data and technical informati on with the prohibiti on of play, communicate to third parti es or use them anyway for any other executi ve purpose and what is shown in this document is the property of the Manufacturer”

Secti on 1 - GENERAL INFORMATION

Zator Srl Via Galvani 11 - 20095 - Cusano Milanino (MI) - Italy www.zator.it - [email protected] 9

1.2 Warranty

This warranty is valid for 12 months from the actual delivery.During the warranty period Zator Srl is undertakes to remove in the necessary ti me the obvious faults and fl aws of material and/or producti on, on conditi on that machine or equipment has been used properly, according to the best rules of behaviour and maintenance provided in this manual.The fl awed parts under warranty are fi xed or replaced free from Zator Srl in the ti me compati bly necessary, understood that the Zator Srl is exempted from each responsibility for any ti tle, while the buyer give up to ask damages or costs, including those resulti ng from the temporary not use of the purchased machinery for all the ti me is necessary to put it back in effi ciency; The transport and/or the forwarding costs, the outward and the return trip costs relati ve to the operati on by the Zator’s technicians in the Buyer address are always on charge of the buyer.The labor costs relati ve to the operati on of the Zator’s technicians in the Buyer address for the removal of fl awed parts under warranty, are on charge of Zator Srl, except these cases when the nature of the fl aw can be easily removed on place by the Buyer.This commitment of Zator Srl excludes each other warranty eff ects provided by the law.The warranty for the replaced or repaired spare parts of the pneumati c valve fi nishes the same day of the warranty expirati on date of the pneumati c valve, the replaced part warranty however doesn’t has lifeti me less than three months aft er its installati on.Replaced parts during the warranty period by the seller are free acquired in the same place with new parts.Are excluded from the warranty all the tools and consumable materials, possibly supplied by Zator Srl with the machine.It are excluded and renounced by the buyer every pretensions of items/people damages reimbursement on charge to Zator Srl, for any ti tles, even if the damages were depending from manufacture or material fl aws. It’s of equal excluded and given up any reimbursement for people and/or items damages depending on the practi se of the pneumati c valve. Parts replaced free remain of Zator Srl property.Elapsed the warranty period every operati on will be on charge to the buyer.

Applicati on fi elds

• Packaging machines• Automati on machines• Paper converti ng industry• Case maker industry• Printi ng machine• Wood industry• Assembly



Condemnati on of conformity fl aw - Goods recepti on

The original confi gurati on of the pneumati c valve never must be changed.On goods recepti on, check that:

• The packaging is intact• The exact correspondence of the commissioned material

In case of damages or wrong delivery contact immediately Zator Srl.The buyer, on penalty of warranty decadence, must report in writi ng the fl aw conformity or fault of the pneumati c valve to the seller, specifying in detail the nature, within eight days from their discovery.In no case the condemnati on of conformity fl aw or fault may be validly made aft er the expirati on date of the warranty terms.Also the buyer decays from the warranty if doesn’t allow each reasonable control that the seller requires.It’s excluded from this warranty the most damage caused to the machine by the failure ti mely condemnati on to the seller of a conformity fl aw or fault of the the pneumati c valve.

1.3 Warranty restricti ons

This warranty is only valid for products of new constructi on.This warranty is limited to the reparati on or replacement, by the seller, of each parts of the machine or supplied material that results fl awed, aft er checking the existence of the fl aw.In no case the seller will be liable for every consequenti al or indirect fl aws or otherwise derived from producti on cycle interrupti on or machine stoppage.The seller is not liable for fl aws of the pneumati c valve derived from the use of devices, equipments, etc. that are enquired and provided by the customer and installed on the machine to change its use compared to the original design.The seller is not liable for every conformity fl aws of the pneumati c valve or faults owed for the normal wear of those parts that, by their nature, are subject to rapid and conti nuous wear.The seller also is not liable for damages resulti ng from improper use of the equipment and from the non-observance of the norms expected for the executi on of the ordinary periodic maintenance.The seller is not liable for conformity fl aws of the pneumati c valve or faults that depends on changes, reparati ons, alterati ons or tampering att ributed to the buyer and however non-authorized personnel of the buyer.The costs relati ve to the wear materials necessary for test and restart the pneumati c valve are on charge of the buyer.

Secti on 1 - GENERAL INFORMATION


1.4 Maintenance service request

1.5 Spare parts request

Contact:

Technical offi ce of Zator S.R.L.

Via Galvani 11 - 20095 Cusano Milanino (MI) - Italy e-mail: [email protected] www.zator.itTel.: +39-0266403235 Fax.: +39-0266403215

Always forward the request in writi ng (fax or email) and give all the informati on to identi fy the machine object of the request:

• Model• Serial number

Please refers to the fronti spiece of this manual or directly to the nameplate on-board to the machine or to the serial number of the pneumati c valve.

The customer is responsible to purchase original spare parts that guarantee him to keep effi cient and safe the pneumati c valve.The disassembly and assembly operati ons must be performed according to the manufacturer’s instructi ons.Contact the Technical Offi ce of Zator Srl which will give to you the specifi cati ons to do the request of the parts and will provide the informati on about their replacement.To order the spare parts is necessary to report completely all identi fi cati on data of the pneumati c valve and those of spare part to be replaced.

The illustrati ons in this document are for example.



2 SAFETY NORMS CONFORMITY OF USE

The pneumati c valve MZF is designed and manufactured in compliance with the current safety standard. Only trained personnel is authorized to install and use the valve. For the pneumati c valve MZF are provided only and exclusively the applicati on fi elds describe in this manual. All data and parameters indicated in this manual must be respected. Any other use is considered improper.

All operati on with the pneumati c valve MZF must be carry out in compliance with the following current safety norm writt en in part:

1. DPR 547 of 27th April 1955 “Rules for preventi on of work accidents” - DPR 303/56 “General rules

for work hygiene”

2. Law No.186 of 1st March 1968 (Regulati ons concerning the manufacturing of materials,

equipments, machinery, installati ons and electrical and electronic plants);

3. Rules of fi re preventi on;

4. D.L. No.277/91 Risks of chemical, physical, biological agents (in parti cular noise, lead and asbestos);

5. D.L. No.476 of 4th December 1992 Actualizati on Directi ve No.92/31/CEE – 89/336/CEE on

electromagneti c compati bility;

6. DLGS 14th August 1996, No. 493 Safety signs actualizati on Directi ve No.92/58/CEE;

7. D.P.R. No.459 of 24th July 1996 Rule for introducti on and use of machines and safety components

on European Union district;

8. Law No.46 of 5th March 1990 Rules for safety of technical plants;

9. DPR No.447 of 6th December 1991 “Rule of law actualizati on of 5th March 1990, No.46 for the

plants safety”;

10. Legislati ve Decree of 19th September 1994 No.626 and 242/96 of 19th March 1996 for the

improvement of the safety and health of workers in the workplace;

11. Law No.791 of 18th October 1977 - DLGS No.277 of 31th July 1997 - Actualizati on of the European

Communiti es council Directi ves of the 73/23/CEE and 93/68/CEE) about the safety guarantees

that the electric material must has, designed for use within specifi c voltage limits;

12. Directi ves 89/686/CEE about the PPE.

Secti on 2 - SAFETY NORMS - CONFORMITY OF USE


2.1 Safety and environment general informati ons

2.2 P.P.E. Personal protecti ve equipment

Before the start-up of the pneumati c valve the personnel must be adequately informed and trained (D.L. 626/94) on its use, directi on and start-up process, as well as the safety norms to be performed and also observe how it is prescribed in this document and in other documents possibly att ached to the pneumati c valve.The employer must provide to instruct the personnel on the risks of injury, on safety devices and accident preventi on general rules provided by the community directi ves and the legislati on of the country where the pneumati c valve is installed.

For personnel who will work on the pneumati c valve, for any functi ons (installati on, assembly, demoliti on, maintenance and operati on) they will be provided with appropriate P.P.E. - Personal protecti ve equipment of type approved and certi fi cate by C.E.:

• anti -solvent gloves• cut resistant gloves • masks• coverall (no fl oati ng coverall)

CAUTION: Always disconnect the power supply before proceed to carry out any maintenance or adjustment operati ons.Discharge the fl uid pressure before to proceed to carry out any maintenance or adjustment operati ons.

CAUTION: The clothes of who will operate on the pneumati c valve for any functi ons must be in compliance with the essenti al safety requirements defi ned by the community Directi ves 89/656/CEE and 89/686/CEE and to the actual laws in the country.



2.3 Risks, protecti ons, warnings and cauti ons

In accordance with the Machine Directi ve it means for:

DANGER ZONE = area within or near the pneumati c valve where the presence of an exposed person make a risk to the safety and health of himself (Att ached I - 1.1.1 Directi ve 89/392/CEE).

EXPOSED PERSON = any person that is placed enti rely or parti ally inside a danger zone (Att ached I - 1.1.1 Directi ve 89/392/CEE).

OPERATOR = person who is appointed to install, operate, adjust, perform ordinary maintenance and clean the machine (Att ached I - 1.1.1 Directi ve 89/392/CEE).

All risk areas of the pneumati c valve have been checked and consequently have been taken the necessary precauti ons to avoid risks to people and damage to the components of the pneumati c valve.

Safety glossary

Intended purposesBy this term it refers to the use of the machine as described by the manufacturer.For “intended purposes” also refers to the use of the unit through its design, its constructi on and functi on.

Secondary risks and/or residual risksA secondary risk is a danger which is not obvious and results from the use of the machine.Secondary risk are unavoidable despite all the preventi ve measures that are taken.

Competent personnelA person is competent when it acquired suffi cient knowledge in a specifi c fi eld both through the professional instructi on and with the experience. A competent person must get to know with the specifi c norms for the safety on work and for the accident preventi on and generally with the technical knowledge rules.

Trained personnelA person is trained when it is informed by a competent person about the acti viti es it must perform and the risks relati ve to improper behaviour and, if necessary, it has received the required training. Also a trained person must be informed about the safety devices and protecti ve measures.

2.3.1 General safety



On the machine also equipped with protecti on systems remain the following R. R. RESIDUAL RISKS:

A - Danger due to electricity in general

B - Danger due to inhalati on of dangerous vapours to health and fi re danger

C - Danger due to problems/malfuncti ons of the control systemThis can lead an excessive increase of dispensing of glue as well as a fi re danger or dangers due to inhalati on of dangerous vapours to health.

D - Risk due to the projecti on of fl uids under pressureIn case of improper maintenance of the hydraulic system parts.

E - Risk of fi reProhibiti on to smoke and/or to be present objects at temperature near the pneumati c valve.

Skilled personnelA skilled person is a competent person or suffi ciently trained.The operator must be informed of the positi on and operati on of all commands and features of the plant.The maintenance and start-up operati ons must be performed by qualifi ed technicians aft er properly setti ng up the machine.The unauthorized tampering or replacement of one or more pneumati c valve parts, the adopti on of accessories that modify the original use of the pneumati c valve and the purpose of diff erent consumer product from those recommended in this manual, can become a cause of injury risks.The protecti ve devices must not be removed or tampered for the risk to reduce the accident preventi on features of our systems.

To highlight parti cular situati ons for the safety of the instrument, are used the following graphic symbols:

2.3.2 Dangers and risks unavoidable

CAUTION and/or DANGER – Accident preventi on rules for the operator

R. R. – RESIDUAL RISKS

WARNING - There is the possibility to damage the machine and/or its componentsPRECAUTION - Further informati on about the operati on in progressNOTE - Provides useful informati on

DISCONNECT from the power supply line



In order to safeguard the health and security of the exposed people, the machine is equipped with:

• Fixed guards: removable only by tools• Mobile guards: depending on the model of pneumati c valve

The machine can be equipped with area delimiters that prevent operator access to dangerous areas (see R.R.).

CE norms signage: examples of danger symbols

CCorrosive

OCombusti ve

agent

FEasily fl ammable

F+Extremely fl ammable

XiIrritati ng

NDangerous for the

environment

XNoxious

PToxic

Danger Noxious material High voltage

2.3.3 Safety devices adopted

2.3.4 More general safety precauti ons

CAUTION: The maintenance operati ons must be peremptorily carry out by qualifi ed and authorized personnel, only and exclusively with machine turned off : power switch in “OFF” positi on. Make sure the passages around the machine is not hindered by misplaced cables and dangerous for personnel.The user must always put available to the operators, in the areas that require it, safety googles, gloves, and any other necessary protecti ons; it must also make sure that these safeguards are being used.The areas that require the use of protecti ve clothing must be marked with warning signs and pictograms indicati ng the residual risk.

CAUTION: is ABSOLUTELY FORBIDDEN to tamper or remove the plates and the protecti ons on the pneumati c valve.The manufacturer declines all responsibility for the safety of the pneumati c valve in case of omitt ed observance of the prohibiti on.



2.4 Environmental conditi on

Operati ng environmental conditi onsThe pneumati c valve is designed to operate in a closed local, protected from the atmospheric agents, with all the safety requirements resulti ng from the laws in force.

Waste disposalThe buyer is responsible to follow the correct process and the norms in force in the country for the disposal of waste and residual material.

Waste defi niti onWaste is any material and object resulti ng from human acti vity or natural cycles which is abandoned or desti ned to be abandoned.

Special wasteThey are considered special waste:• Remains from industrial producti on, agricultural acti viti es, craft s, commercial and service that for

quanti ty are not declared comparable to urban waste;• Obsolete and deteriorated machinery and equipments;• Motor vehicles and their parts out of use.

Toxic-noxious wasteAre to be considered toxic-noxious waste all waste containing or contaminated by materials listed in the att ached on the DPR 915/52 of actualizati on of Directi ves 75/4427CEE, 76/403/CEE and 768/319/CEE.

Temporary storageTemporary storage of toxic and noxious waste is allowed depending on the expected disposal of the same by treatment and/or fi nal disposal. In each case, must be observed the laws in force in the country of the user in the environmental safeguard fi eld.

Features of containersThe fi xed and mobile containers designed to contain toxic and noxious waste must have suitable strength requirements in relati on to the chemical-physical properti es and the dangerousness features of the waste contained. The containers where the products and the dangerous or noxious materials are stored, must have markings and symbols in order to show the nature of their contents.

Registrati on obligati onsPursuant to the DPR of 23 August 1982 relati ve to the implementati on of the Directi ve 75/439/CEE the records of loading/unloading operati ons must be kept by all companies that generate - special or toxic - noxious waste from industrial and hand-craft ed producti ons.



DisposalThe pick up of special and/or toxic-noxious waste must be committ ed with contract to specifi cally authorized companies and who do the transport materially must be in ownership of the required authorizati ons and must be turn out to be registered in the haulers register.It’s absolutely forbidden to throw waste in the environment.For the disposal of the packaging, the user must follow the laws in force in the country of plant installati on.

Fire materialThere is no fi re dangers by the operati on of the pneumati c valve.

Lighti ngThe customer is responsible for ensuring an appropriate lighti ng of the local where the machine is installed, according to the laws in force in your country and the EU directi ves.

Vibrati onsThe pneumati c valve doesn’t make vibrati ons.

CAUTION: The customer must provide an appropriate fi re-fi ghti ng system, evaluati ng its internal situati on and respecti ng the laws in force.In case of fi re, disconnect immediately the power switch to interrupt the power supply.

CAUTION: explosive atmosphereThe pneumati c valve is not designed to operate in explosive atmosphere. It is forbidden to use the machine in an explosive atmosphere, even if only parti ally explosive.



2.5 Installati on - General norms

Zator’s products are manufactured in compliance with the laws in force during its constructi on.The personnel will be trained and qualifi ed to take advantage of the installed machinery requirements. The personnel must operate in a comfortable space that could be guarantee safety and hygiene for the operator.In case of a diff erent desti nati on or necessity of use of the pneumati c valve, it’s appropriate to refer to the technical offi ces of the Zator Srl.

Goods in packagingOutside the package are indicated all the informati on about the content identi fi cati on and the safety movement:

• CE marking• address of the sender and the addressee• dimensions: length – width – height• gross – net – tare weight• annotati ons and pictograms (ex. britt le, handle with care, high)

CAUTION: The customer must check the conditi on of the goods upon its arrival.

Predispositi ons: choose the installati on spaceWithout prejudice to specifi c dispositi ons, the customer will be provide to:• Appropriate logisti c arrangement for the placement and conducti on of the pneumati c valve• Power supply, including the protecti ve conductor usually called “GROUNDED”• Electrical equipment arrangement and possible pneumati c system• Wear materials

For the electrical connecti on it is necessary to have a preferenti al line of power supply with the features listed in “technical features”.

Pneumati c connecti ons

CAUTION: The compressed air must be free of humidity. It is necessary to assemble on the compressor one or more automati c condensati on outlet; the air must be fi ltered and dried out.Make sure that in the pneumati c circuit is not inserted any type of substances (ex. lubrifi cants or other substances).



2.6 Use of adhesives, glues or other fl uids

The use of the valve with adhesives, glues or general fl uids must be respect the following basic rules.

Before use a specifi c type of fl uid check that:

• The fl uid viscosity is compati ble with the features of the valve• The characteristi cs of the fl uid meet the desired requirements • The datasheet of the fl uid provided by the manufacturer includes all the informati ons about the

fl uid such as: viscosity, applicati ons, gluing ti me (for glues or adhesives) and storage• The storage ti me of the fl uid has not been exceeded• The fl uid has not been exposed to temperatures near or below than zero therefore it has

deteriorated• The packaging of the fl uid are sealed

For the use of special adhesives, glues or fl uids we recommend to contact the Zator company to verify the compati bility of the applicati on.

Before use a diff erent type of fl uid clean accurately the valve to avoid possible contaminati on of the new fl uid.

When used water-based adhesives of glues they are easily removable with water in their liquid state. However, when they harden is more diffi cult to remove it. For this reason, before long stop it is recommended to wash accurately the valve. Please refer to the maintenance program shown in this manual.



3 TECHNICAL DESCRIPTION

3.1 Valve functi ons

3.2 Technical data

The pneumati c spray valve MZS has been designed and realized for its use on various kind of producti on machines: its design and versati lity make it ideal for any applicati ons that require the use of spray valves. It’s a dispenser of low and medium viscosity glues, adhesives and fl uids. The valve is pneumati cally controlled by a solenoid control valve and an external solenoid valves for the nebulizati on of the fl uid.It’s strength and compact size. It has the parti cularity to have nozzle and cap with anti -sti ck coati ng and a self-cleaning needle which ensure the long operati on ti me of the valve. The micrometric adjustment allows a fi ne control of the glue quanti ty dispensed.

Available nozzle diameters from 0,3 to 1,5 mm

Valve body Nickel-plated brass

Maximum working pressure 25 bar

Drive air pressure Minimum 5 bar

Drive type Double acti on

Nebulizati on pressure 0,5 ÷ 5 bar

Weight 510 gr

Fluid types

Adhesives and glues

Inks

Paints

Lubrifi cants

Low viscosity fl uids

Spray

Secti on 3 - TECHNICAL DESCRIPTION


3.3 Functi oning descripti on

The valve 3A is composed mainly of:

1. Air cap2. Nozzle3. Needle4. Air piston5. Spring6. Solenoid valve7. Valve body

3A. Internal secti on diagramof the main components

(for illustrati on only)

When the valve is not acti vated, the needle closes the nozzle seat, pushed by a spring, and stops the fl uid under pressure to fl ow out from the nozzle hole.

When the external solenoid valve that allow the drive air to fl ow inside the piston chamber is acti vated, this acti on acti vated the valve. Then the piston moves back together with the needle, allowing the fl uid fl ow to come out from the nozzle. At the same ti me, the acti vati on of the second external solenoid valve allows the nebulizati on air to fl ow inside the air cap where it mixes with the fl uid and comes out from the air cap in spray form.

Functi oning diagram

NEBULIZATION AIR

NEBULIZATION AIR

1

2

1 2

DRIVE AIR

7

6

5

4

3

2

1



4 INSTALLATION

4.1 Fixing and placement of the valve

The MZS valve must be fi xed on a proper bracket by using the threaded holes (M5 dimension) machined on the valve body.A vibrati on-free environment and a good accessibility for regulati on, cleaning and maintenance and a good fi xing of the valve to the support/bracket and of the latt er to the machine must be guaranteed.

The ideal working positi on of the valve is verti cal, with the nozzle facing downwards. It’s possible to ti lt the valve of ±45° degrees.The recommended distance between the nozzle and the surface to be glue is between 20 and 40 mm.Note that this distance defi nes the size of the applicati on area of the nebulized fl uid.Increasing the distance between the valve and the surface to be glue/coat you will obtain a bigger area with a litt le quanti ty of applied fl uid. Conversely, decreasing the distance between the valve and the surface, you will obtain a smaller area with a big quanti ty of applied fl uid (for details see secti on 5.3 - Nebulizati on adjustment).

Other diff erent positi ons are possible upon approval of the Zator.

MAX TILTRECOMMENDED

RECOMMENDEDDISTANCE± 45° 20 ÷ 40 mm

Threaded holes M5

Secti on 4 - INSTALLATION


4.2 Fluid supply connecti on

4.3 Electrical connecti on

Fluid supply connecti on G1/8”

Electricalconnecti on

*Parts are supplied separately


The valve must be connected to a glue feed units*. A fl exible plasti c pipe* (for applicati ons up to 8 bar) must be connected to a pipe fi tti ng (G1/8”)* to be screwed on the fl uid supply connecti on of the valve.For applicati ons with working pressure over 8 baruse fi tti ngs and pipes* for high pressure must be used.

Connect an electrical cable* with cross-secti on not less than 0.35 mm to the solenoid valve connector.

4.3.1 ConnectorElectrical

terminal 1

Electrical terminal 2

Connect an electrical two poles cable*, with cross-secti on not less than 0.35 mm, to electrical terminals 1 and 2.



4.5 Installati on diagram

Drive air:Connect a pipe Ø6x4 to the air connecti on on the valve. The drive air pressure must be 5 bar.

Nebulizati on air:Connect a pipe Ø6x4 (from

the 2/2 way external solenoid valve*) to the air connecti on

on the valve. The nebulizati on air pressure must be between 0,5 and 5 bar (by an external

air pressure regulator*).

Fluid inlet:Connect a pipe* by the use of G1/8”

Provide for all connecti ons a pipes length such as to ensure a good accessibility to the valve to be able to easily carry out the operati ons of maintenance and cleaning.

The required connecti ons for the functi oning of the MZS valve are:

2 1

3

4.4 Drive air connecti on and nebulizati on

Connect a pipe Ø6x4 to the air connecti on on the valve. The drive air pressure must be 5 bar.

Connect a pipe Ø6x4 to the air connecti on on the valve. The nebulizati on air pressure must be between 0,5 and 5 bar.

1. Drive air connecti on

2. Nebulizati on air connecti on

1

2


Secti on 4 - INSTALLATION


4.6 Valve acti vati on

The MZS valve must be controlled by two solenoid valves, one fi tt ed on the valve and a second one external*:

• Solenoid valve fi tt ed on the valve for the drive air;• 2/2 way external solenoid valve for the nebulizati on air.

The drive pressure must be minimun 5 bar.The nebulizati on pressure must be between 0,5÷5 bar.

The nebulizati on air must be acti vated before and deacti vated aft er the drive air to avoid that the glue can dirty the nozzle and the air cap.

OFF

OFF

OFF

OFF

ON

TIME

NEBULIZATION AIR

DRIVE AIR ON




5 VALVE ADJUSTMENTS

5.1 Fluid quanti ty adjustment

The adjustment of the dispensed fl uid quanti ty (ex. glue) by the valve is determined by:

• The nozzle diameter: greater diameter → more fl uid quanti ty• The fl uid pressure: greater pressure → more fl uid quanti ty• The needle travel adjustment: greater needle travel → more fl uid quanti ty

Operati ng on these points it’s possible to adjust the dispensed fl uid quanti ty.

5.2 Needle travel adjustment

To adjust the needle travel, operate on the micrometric adjustment handle placed on the top of the valve. This handle allows to adjust the dispensed fl uid quanti ty with a fi ne control.

Turn counter-clockwise to increase the needle travel therefore the dispensed fl uid quanti ty.

Turn clockwise to decrease the needle travel therefore the dispensed fl uid quanti ty. At the end of the needle travel, the valve is completely closed, therefore it doesn’t dispense any fl uid.

Don’t ti ghten with excessive force the needle adjustment handle to avoid damage to the nozzle and needle.

Micrometric adjustment

handle

A

B

+

A

B

-

Secti on 5 - VALVE ADJUSTMENTS


5.3 Nebulizati on adjustment

The adjustment of the nebulized fl uid is determined by:

• Distance between the valve and the surface to be glue: see secti on 4.1 - Fixing and placement of the valve

• Dispensed fl uid quanti ty: see secti on 5.1 - Fluid quanti ty adjustment• The pressure of nebulizati on air

Operati ng on these points it’s possible to adjust the size and geometry relati ve the applicati on area of the nebulized fl uid.

ROUND air cap FLAT air cap

YES YES

NO

NO

NO

NO

TOO MUCH GLUE

TOO MUCH GLUE

RIGHT AND OPTIMAL APPLICATION

LINEAR FAN PROFILE AND UNIFORM APPLICATION OF THE NEBULIZED FLUID

No operati ons needed

INDENTED FAN PROFILE

DEFECT→ WHAT TO DO

• The glue bounce from the paper dirtying the air cap and the nozzle → Decrease the nebulizati on air pressure

• Excessive glue quanti ty → Decrease the fl uid pressure

INDENTED FAN PROFILE AND APPLICATION OF THE NEBULIZED FLUID NOT UNIFORM

DEFECT→ WHAT TO DO

• Presence of glue satellite → Increase the nebulizati on air pressure

• Low quanti ty of glue → Increase the fl uid pressure

• Presence of impuriti es or lumps inside the glue → Clean the glue fi lter

LITTLE GLUE LITTLE GLUE

GLUE SATELLITE

GLUE SATELLITE

GLUE GLUE



6 MAINTENANCE

6.1 General norms

6.2 Maintenance program

The pneumati c valve MZS, thanks to the constructi on methods and employed materials, is easy to maintain. A minimal, simple, accurate and constant maintenance allows a long-lasti ng and regular functi oning of the valve, keeping uncharged its performance.

• For the general cleaning of the valve don’t use metallic, sharp or pointed objects. Use only soft brushes or cott on rags.

• All the maintenance works on the valve must be performed by qualifi ed personnel and aft er the supply pressure system has been discharged

• For the nozzle cleaning use only cleaning needles supplied by the valve manufacturer: if you use other sharp objects the nozzle could be damaged

• Use only original spare parts• The valve must be washed only and exclusively with water, especially if you need to

replace the nozzle or the needle• Every evening and if you expect a long work break put some grease on the nozzle ti p

TIMING* WHAT TO DO

1 Every day, before the start producti on • Do a valve test• Clean the valve externally

2 Every day, at the end of producti on• Do a valve test• Clean the valve externally• Put some grease on the nozzle ti p

3 Before a producti on break longer than two weeks

• Drain the fl uid from the system and wash it completely with water

• Leave the system with water inside

4 Aft er a producti on break longer than two weeks

Discharge the water from the system and fi ll it with the adhesive fl uid

5 Every month or aft er 2000 working hours As point 3 and 4

6 Every year or aft er 4000 working hours • As point 3 and 4• Replace possible worn parts

*Approximate values that can change depending on the type of glue, adhesive or fl uid used.For the use of special fl uid we recommend to contact the Zator company for any questi ons.

Secti on 6 - MAINTENANCE


6.3 Cleaning and/or replacement of the nozzle

Before you disassembling, cleaning or replacing the nozzle the following steps must be done:

• Wash the valve with water• Discharge the pressure from the supply system

Then proceed as follows:

Unscrew the air cap nut and pull out the air cap*;

Unscrew the nozzle with a 6mm wrench;

Loosen the needle adjustment operati ng on the micrometric adjustment handle (see secti on 5.2 - Needle travel adjustment), by turning it counter-clockwise unti l it doesn’t resist anymore;

1

3

2

*Also valid forfl at air cap model

and pull out

6



Aft er removing the nozzle, to clean it:

Put the nozzle under running water then blow it with compressed air and clean the nozzle hole with the cleaning needle;

Repeat the step unti l you have removed all the impuriti es inside and outside the nozzle;

Screw the nozzle with a 6mm wrench;

4

5

6

Finally positi on the air cap* and screw the air cap nut.

7


air cap nut.

with a 6mm wrench;

6



6.4 Valve disassembly

Before you disassembling the valve the following steps must be done:

• Wash the valve with water• Discharge the pressure from the supply system


Unscrew the fi xing screws of the solenoid valve ;

3

Unscrew the solenoid valve connector screw;

Then pull out the solenoid valve connector;

1

2



Unscrew the adjustment block with a 17mm wrench;

7

Unscrew the air cap nut and pull out the air cap*;

Unscrew the nozzle with a 6mm wrench;

Loosen the needle adjustment operati ng on the micrometric adjustment handle (see secti on 5.2 - Needle travel adjustment), by turning it counter-clockwise unti l it doesn’t resist anymore;

4

6

5


with a 6mm

17

and pull out

*Also valid for

6

11 9

Unscrew the air connecti on (drive and nebulizati on) with a 11mm and a 9mm wrench;

8



Pull out the needle with the help of a smooth pliers. Check the wear of the needle O-rings and if it is necessary, replace it;

Pull out the plasti c protecti on from the lock bush;

9

10

Unscrew the lock bush with tubular spanner, then remove it from the valve body;

Check the wear of the lock bush O-ring (POS. 11-12-13) and of the gasket (POS. 14) and, if it is necessary, replace it. Always grease* the new O-rings before assembling them;

11

12

*Use silicon-based grease or oil specifi c for O-rings.

For any questi ons or informati on contact the Zator company.

*Use silicon-based grease or oil

For any questi ons or informati on

POS.11

POS.12

POS.13

POS.14



6.5 Valve assembly

Before to assembling the valve the following steps must be done:

• Remove the residual glue from the valve using a wet rag or soft brush • Clean the nozzle and if it is necessary put it under running water then blow it with compressed air

and clean the nozzle hole with the cleaning needle• Check the wear of the O-rings and if it is necessary replace it• Before the assembly always grease the O-rings


Insert the lock bush inside the valve body, then screw it with a tubular spanner;

Insert the needle complete* unti l it stops;

Inject some silicon-based grease specifi c for O-rings inside the hole of the lock bush unti l it doesn’t come out from the hole, then insert the plasti c protecti on;

2

4

3

1 Insert the gasket (POS. 14) and the O-ring (POS. 11-12-13) in the lock bush. Always grease* the new O-rings before assembling them;

*Use silicon-based grease or oil specifi c for O-rings.

For any questi ons or informati on contact the Zator company.

*Use silicon-based grease or oil

For any questi ons or informati on

POS.11

POS.12

POS.13

POS.14



Screw* the adjustment block in the valve body with a 17mm wrench;

6

*Pay att enti on that the adjustment block is not ti lted during the screwing to avoid damage to the thread.

Screw** the nozzle with a 6mm wrench;

7

**Before screwing the nozzle, check that the micrometric adjustment handle is completely loosened to avoid damage to the nozzle and needle. To loosen the micrometric adjustment handle, turn it counter-clockwise unti l it doesn’t resist anymore.

Screw the air connecti ons with a 11mm and 9mm wrench;

5

11 9

!

NO

SI

17

with a 6mm

6



Screw the solenoid valve mounti ng screws;9

Finally screw the solenoid valve connector screw.

Insert the solenoid valve connector;

11

10

Place the air cap* and screw the air cap nut;

8


air cap* and screw the air

Secti on 7 - TROUBLE SHOOTING


7 TROUBLE SHOOTING

CAUTION: the trouble shooti ng must be performed only by qualifi ed personnel observing the safety norms.

TROUBLE POSSIBLE CAUSE WHAT TO DO

No or litt le quanti ty of dispensed fl uid

The valve doesn’t receive any signal

• Check the drive of the valve (solenoid valve);• Make a manual test

The pressure of the fl uid is low or missing Check the supply pressure

The nozzle is clogged Unscrew and clean the nozzleThe fi lter is dirty (If in use) Wash or replace the fi lter

Bent pipe Check the conditi on of the supply pipe

No or weak drive pressure Check the drive air pressure (min. 5 bar)

Residual glue into the system Wash the complete system

Leak of fl uid from the lock bush

O-ring or gasket inside the valve body is damaged

Replace the O-ring (POS.11-12-13) or the gasket (POS. 14)

Nozzle drips fl uid even if the valve is

not acti vated

Presence of dirt inside the nozzle Clean or replace the nozzle

The valve is acti vated with a lag

No or weak drive pressure Check the drive air pressure (min. 5 bar)

Piston O-ring is damaged Replace the piston O-ring (POS.7-9)

Irregular fl uid nebulizati on

No or weak nebulizati on pressure Check the nebulizati on air pressure (0,5÷5 bar)

Presence of grime inside the air cap Clean the air cap



8 MODELS

Code Descripti on

C3451XX00 Spray valve MZS1XXSRRM round cap 24 V

Replace XX value with nozzle diameter desiredAvailable nozzle diameters from 0,3 - 0,5 - 0,8 - 1,0 - 1,5 mm

Code Descripti on

C3454XX00 Spray valve MZS1XXSFRM fl at cap 24 V


Code Descripti on

PDG00100 Nebulizati on air control unit


Available opti onals

Secti on 8 - MODELS




9 PARTS LIST

Pos. Code Q.ty Descripti on

1 C34000001 1 Micrometric adjustment complete2 C31200003 1 Micrometric adjustment knob3 C34000002 1 Micrometric adjustment block4 K92011501 1 O-ring5 H83100108 1 Adjustment circlip6 K93510901 1 Spring7 K92011001 3 O-ring8 H83100109 1 Adjustment piston9 K92011401 1 O-ring

10 H841303XX 1 Needle11 K92010202 1 O-ring12 K92010601 1 O-ring13 K92010401 1 O-ring14 K92320301 1 Gasket15 H83100104 1 Lock bush16 K95120402 1 Operati ng air fi tti ng17 K95110102 1 Atomizing air fi tti ng18 C34400001 1 Valve body19 C31000001 1 Plasti c protecti on20 H82050201 1 Solenoid valve 24VDC21 K96101111 1 Solenoid valve connector22 K93362316 2 Solenoid valve screw23 H857221XX 1 Nozzle

Replace XX value with needle/nozzle diameter desiredAvailable needle/nozzle diameters from 0,5 - 0,8 - 1,0 - 1,5 mm

24 H85792110H85792115

11

Air cap round 0,3 - 1,0 mmAir cap round 1,5 mm

25 H85792210H85792215

11

Air cap fl at 0,3 - 1,0 mmAir cap fl at 1,5 mm

26 H85792001 1 NutK92911000 1 Gasket kit

Secti on 9 - PART LIST


The images in this document are considered for illustrati on only. The company reserves the right for any changes without noti ce. Names,

trademarks and logos are property of the author.

1

2

3

4

9

12

1617

18

19

20

21

22

23

24

2526

1314

15

11

10

5

6

7

7

8



10 DIMENSIONS

12

21

77

34

11

8

70

M5

42

108

18

105

125

G1/8 15

28

23

34

6

8

14

6

18

22

35

MZS1XXSRRM

MZS1XXSFRM

12

21

77

34

11

8

70

M5

111

46

22

109

128

G1/8 15

31,

6

23

34

6

8

14

6

18

22

35

NOTES

..........................................................................................................................................

..........................................................................................................................................

..........................................................................................................................................

..........................................................................................................................................

..........................................................................................................................................

..........................................................................................................................................

..........................................................................................................................................

..........................................................................................................................................

..........................................................................................................................................

..........................................................................................................................................

..........................................................................................................................................

..........................................................................................................................................

..........................................................................................................................................

..........................................................................................................................................

..........................................................................................................................................

..........................................................................................................................................

..........................................................................................................................................

..........................................................................................................................................

..........................................................................................................................................

..........................................................................................................................................

..........................................................................................................................................

..........................................................................................................................................

..........................................................................................................................................

.........................................................................................................................................

.........................................................................................................................................

..........................................................................................................................................

..........................................................................................................................................

..........................................................................................................................................

..........................................................................................................................................

..........................................................................................................................................

..........................................................................................................................................

..........................................................................................................................................

..........................................................................................................................................

..........................................................................................................................................

..........................................................................................................................................

..........................................................................................................................................

..........................................................................................................................................

46 PNEUMATIC SPRAY VALVE MZS

ZATOR SRL

Via Galvani, 1120095 Cusano Milanino (MI)

Italy

Tel. +39 02 66403235Fax +39 02 66403215

[email protected]

pneumatic spray valve - zator · 2.3 risks, protecti ons, warnings and cauti ons 14 2.3.1 general...

Documents