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PEM-CG2 AIRMATIC Powder cup gun |
04/97 | |
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| Operating Manual | |||
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2.2. What powder materials can be used?
2.4. Operation of the spraygun
2.5. Part numbers of the spraygun
2.6. Control elements of the spraygun
2.7.2. Part numbers Corona-Star Retrofit-Set
2.7.3. Assembling instructions
3.2. Connecting the powder cup gun to the control unit
3.2.1. Connecting to EPG 2020 CG
3.2.2. Connecting to EPG 2007 and EPG 2020 TP
4.1. Adjusting the powder cloud
4.2. Application-related description of nozzle systems
5.1. Cleaning the powder nozzle
5.2. Replacing the nozzle insert
5.3. Standard adjustments of the spraygun
7. Spare parts list and accessories
This technical manual contains informations and hints for the servicing, repairing and maintenance of the equipment. The observation of this instruction is element of the warranty agreements.
powder systems
are designed to meet the most stringent safety requirements. They can be operated
in compliance with generally applicable safety codes and applicable national
safety regulations.
This manual contains information which must be read and unterstood before using the equipment. When you come to an area which has one of the following symbols, pay particular attention and make certain to heed the safeguard.
| "Warning" |
Important safety information indicates a hazard which may cause serious injury or loss of life.
| "Caution" |
Important information for preventing damage to equipment or how to avoid causes of minor injuries.
"Hint"
Gives important information which deserves special attention.
| Declaration of Conformity |
herewith declares
that the equipment described in this manual has been developed and manufactured
in agreement with the demands according to paragraph 5.1.2 of the European Norm
EN 50014.
| Warning |
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HAZARD |
PREVENTION |
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Electrostatic arcing may cause an explosion or fire. Mixtures of powder and air can explode or ignite causing property damage and/or severe injury.
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Explosion or fire. Mixtures of powder and air can explode or ignite causing property damage and/or severe injury.
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Explosion or fire. Mixtures of powder and air can explode or ignite causing property damage and/or severe injury.
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Toxic Substances: Some materials may be harmful if swallowed or come in contact with the skin.
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General
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| Warning |
This equipment can be dangerous if it is not operated in accordance with the safety regulations given in this operating manual! There might be additional regulations to be observed put into effect by governmental, state- or other official agencies or local security (fire) departments.
The following rules must be observed in order to ensure safe and efficient use of the equipment:
* UEG: Lower explosion limit, i.e. maximum allowed concentration of powder in air.
| Warning |
Powders containing metal pigments may only be processed in compliance with the powder manufacturer's instructions.
Applicable Safety Regulations and List of Sources
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1) |
EN 50050 |
Electrical equipment for explosion-hazard areas Manual electrostatic spraying equipment |
(published by |
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2) |
EN 50053 - 2 |
Requirements for selection, installation and use of electrostatic spraying equipment for flammable materials |
(published by |
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3) |
ZH 1/443 |
Electrostatic powder coating using manual spraying equipment |
(published by |
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4) |
EX-RL / ZH 1/10 |
Guidelines for explosion protection |
(published by |
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5) |
VDE 0165 |
Installation of electrical equipment in explosion-hazard areas |
(published by |
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6) |
VDMA 24371 Part 1 |
Guidelines for electrostatic coating using synthetic resin powders |
(published by |
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7) |
ELEX V |
Regulation for electrical systems in explosion-hazard areas |
(published by |
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8) |
VDE 0134 |
Instructions for first aid in case of accident |
(published by |
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9) |
VDS 2093 |
Association of insurance companies |
(Riehlerstr. 36 |
Safety-related information concerning harmless discharge
When the high voltage is turned on, a glow or corona discharge, that is only visible in a dark environment, occurs at the electrode tip. When the electrode approaches the grounded workpiece, this physical phenomenon can be observed.
This glow discharge does not provide any ignition power and does not have any influence on the handling of the installation. When the electrode approaches the workpiece, the control device automatically reduces the high voltage to a safe level or turns off the high voltage depending on the setting.
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If the finger comes in contact with the plastic parts of the spraygun, harmless discharges (socalled brush discharges) can occur. The charging of the plastic parts is caused by the high voltage electrostatic field of the gun. However, these discharges do not provide any ignition power.
What is covered by this warranty:
Faulty and useless parts are replaced according to our general delivery conditions.
Within the applicable warrant period, Wagner will repair or replace, at our option, defective parts without charge if such parts are returned with transportation charges prepaid to the nearest authorized service center. If Wagner is unable to repair this product so as to conform to this Limited Warranty after a reasonable number of attempts, Wagner will provide, at our option, either a replacement for this product or a full refund of the purchase price of this product.
These remedies are the sole and exclusive remedies available for breach of express and implied warranties.
What is not covered by this warranty:
This warranty does not cover any damage or defects:
Limitation of remedies:
IN NO CASE SHALL WAGNER BE LIABLE FOR ANY INCIDENTAL, SPECIAL OR CONSEQUENTIAL DAMAGES OR LOSS, INCLUDING TRANSPORTATION COSTS, WHETHER SUCH DAMAGES ARE BASED UPON A BREACH OF EXPRESS OR IMPLIED WARRANTIES, BREACH OF CONTRACT, NEGLIGENCE, STRICT TORT, OR ANY OTHER LEGAL THEORY.
Disclaimer of implied warranties:
THE FOREGOING WARRANTIES ARE IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
No ability to transfer:
This warranty is extended to the original purchaser only and is not transferable.
Your rights under state law:
Some states do not allow limitations on how long an implied warranty lasts or the exclusion of incidental or consequential damages, so the above limitation and exclusion may not apply to you. This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.
The
Airmatic - Powder
cup gun PEM-CG2 is used for spraying of coating powders. Above all the
gun is suitable for laboratory experiments, for coating of samples and low volume
production.
The gun can be used with the following control units:
Generally the powder cup gun PEM-CG2 is connected to the control unit
EPG 2020 CG.
| Caution |
The powder cup gun may only be used for the above described application.
Basically, all coating powders can be used with the powder cup gun PEM-CG2 e.g.epoxy resin, polyester, blended powder EP / PES, PUR.
| Caution |
Powders containing metal pigments may only be processed in compliance with the powder manufacturer's instructions.
| Weight: | 890 g (without supply lines) |
Electrical: |
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| Input voltage: | max. 22 Vpp |
| Input current: | max. 0,9 A |
| Frequency: | 19...30 kHz |
| Output voltage: | max. 100 kV DC |
| Output current: | max. 160 µ A DC |
| Polarity: | negative |
| Design: | accord. to EN 50050 |
| Protection class: | IP 54 |
Pneumatic: |
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| Input air pressure: | 29 psi (2 bar - standard adjustment) |
| Powder output: | max. 200 g/min at 29 psi 2 bar (max. 300 g/min at 58 psi 4 bar) |
Compressed air quality ISO 8573.1: |
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| Residual water content in compressed air: | max. 1,3 g H2O/Nm3 at a dew point of 7°C |
| Residual oil content in compressed air: | max. 0,01 mg oil/Nm3 |
| Residual dust content in compressed air: | max. 1 mg dust/Nm3 |
| Ambient conditions: | If low temperature powders are used the ambient temperature may have to be lower than 30°C. |
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When the trigger (E, see paragraph 2.6) is pulled (control unit is turned on), the high voltage is activated in the PEM-CG2. At the same time the supply air (F) to the powder cup gun is opened at the control unit.
The air supply is used:
A high DC voltage (up to 100 kV), applied across the grounded workpiece and the electrode fitted to the gun body generates an electric field and applies a negative charge to the powder particles. These repel each other as they move from gun to workpiece and so distribute evenly through the fine spray cloud and then uniformly deposit on the grounded surface. Particles shooting past the component remain trapped in the electric field and deposit on the backside of the work object. Effective material yield, time savings, markedly improved quality of finish, less cleaning and a healthier environment are the principal properties of the process.
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Caution |
To provide a safeguard against unintentional use of the spraygun, the control unit must be turned off.
Airmatic - Spraygun PEM-CG2 Part No. 0351 023
Standard version:
with round spray nozzle, externally charged and deflector cone Ø17, Ø25, Ø32 mm and powder cup 500 cm3; with a hose (black) AD6x1 Part No. see paragraph 7. and reduction Part No. see paragraph 7.
Accessories: see paragraph 7.
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| A Electrode | G Electric supply |
| B Deflector cone | H Powder cup 1) |
| C Outer nut | J Cup socket with integrated powder injector |
| D Spraygun body | K Adjust feeding air (red) |
| E Trigger | L Adjust fluid air (green) |
| F Supply air |
1) Container with fluidization
Hint
The spraygun has a factory setting for generating an optimum powder cloud with any standard powder. See also paragraph 5.3. "Standard adjustments of the spraygun"
The Corona-Star is a Retrofit-Set for the powder spraygun PEM-CG2, which helps to achieve a better surface quality.
The formation of "orange peel" can be reduced for most powder types.
| Caution |
The gun cable must be connected via the adapter cable (1) to the control unit, when the Corona-Star Retrofit-Set is used.
Part No. 0351 110
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Item |
Part No. |
Quantity |
Description |
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1 |
0259 608 |
1 |
Adapter cable |
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2 |
0351 111 |
1 |
Corona-Star cpl. |
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3* |
0260 296 |
1 |
Electrode Corona-Star (included in pos. 2) |
* Wear part
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| Caution |
The assembling of the Corona-Star may only be carried out by trained personnel!
Course order:
| Connect adapter cable (F) at the control unit |
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| Connect gun cable (A) and adapter cable (F) |
Recommendation
Before installing and start up, become familiar with the corresponding operating manuals.
The powder cup gun is packaged and delivered in two parts:
Before operating the gun:
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Hint
The user must ensure, that the spraygun is only connected to
equipment.
Generally the powder cup gun PEM-CG2 is connected to the control unit EPG 2020 CG.
| Caution |
The powder cup gun may only be used for the above described application.
Electrical connections:
Pneumatic connection:
Connection diagram with the control unit EPG 2020 CG
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Electrical connection:
Pneumatic connection:
Connection diagram with the control unit EPG 2007
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Connection
diagram with the control unit EPG 2020 TP
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In order to achieve a good powder coating and for security reasons (see 1.1., "Safety regulations"), the Airmatic-Powder cup gun PEM-CG2 must be properly grounded.
Good grounding of the workpiece is necessary for optimum powder coating. A poorly grounded workpiece causes:
| Warning |
Sparks between workpiece and conveyor hooks (hangers)
can occur if hooks or other hanger parts are not completely
cleaned!
Preconditions for good grounding as well as coating are:
Preconditions:
Course order:
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Fluid air |
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| Feeding air |
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Nozzle |
Workpieces |
Spray cloud |
Air adjustments |
Coating distance |
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Round spray nozzle, externally charged
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Wire goods, Gratings, Aluminum cross sections |
Round spray cloud depending on the size of the deflector cone |
Feeding air: with the regulating knob at the cup gun
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100-160 mm depending on the chargeability of the powder |
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Fan spray nozzle, externally charged
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difficult workpieces, undercuts, broken edges |
fan spray |
Feeding air: with the regulating knob at the cup gun
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120-180 mm depending on the chargeability of the powder |
Hint
The powder cup gun should be blown through and cleaned from powder deposits with every interruption of work.
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Course order:
Course order:
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Hint
Use a separate powder cup (5) for each individual color. The positions in the pictures are not the same as in the spare parts list.
Preconditions:
Hint
The wear parts marked with (*) in the spare parts list of the powder cup gun PEM-CG2, must be regularily checked and replaced if necessary.
| Warning |
| Caution |
Never place the spraygun or parts of it into any cleaning agent!
Course order: for example round spray nozzle:
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| Caution |
When pulling out and inserting the new nozzle insert, take care that the contact points are thoroughly cleaned.
The cleaning of the other nozzle systems is performed in the same manner.
Hint
The positions in the pictures are not the same as in the spare parts list.
Standard adjustments:
* The standard values of the particle size distribution apply for the measuring
in
H2O + ultrasonic, laser, flow.
Control elements:
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| K adjust feeding air 1) | L adjust fluid air 1) |
| M adjust dosage air 1) | N adjust central air 1) |
1) When turning counterclockwise the value will be increased.
Adjustments at the spraygun:
Special adjustments at the spraygun:
| Warning |
The throttle-screws M and N should never be screwed in completely (danger of destruction!).
Hint
The spraygun has a factory setting for generating an optimum powder cloud with any standard powder.
| Warning / Caution |
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WARNING |
CAUTION |
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WHEN CLEANING THE ELECTROSTATIC SYSTEM, THESE SAFETY PROCEDURES MUST BE FOLLOWED. FAILURE TO FOLLOW THESE PROCEDURES MAY RESULT IN AN EXPLOSION/FIRE.
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NOTE
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| Caution |
Maintenance, repair or replacement of the powder spray unit (powder cup gun PEM-CG2) or its components may only be performed by trained personnel outside the hazard area in a suitable location.
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Malfunction |
Cause |
Remedy |
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No powder output No electrostatic charge |
- Safety fuses at control unit are defective |
- Replace safety fuses, see operating manual of the control unit |
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No electrostatic charge (e.g. no wrap-around or no powder adhesion) |
- Fault at high voltage generator - Electrical cable between spraygun and control unit defective - Cascade in spraygun is defective |
- Inform - Inform - Inform |
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Poor wrap-around Back-spray |
- Bad grounding - No grounding |
- See paragraph 3.3. - See paragraph 3.3. |
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Powder output irregular or insufficient |
- Main compressed air supply insufficient - Powder cup not tight - Feeding air / dosage air- proportion not correct - Impurities - Obstructions - Wear |
- Check air main supply - Tighten powder cup properly - Readjust, see paragraph 5.3. - Empty the cup, blow through powder air channels - Dismantle spraygun, clean the parts, see paragraph 4.3. and 4.4. - Change worn out parts, see paragraph 5. |
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Spray jet not correct |
- Deflector cone (round spray) or nozzle cap (fan spray) clogged resp. worn out |
- Clean the deflector cone resp. nozzle cap; replace worn out and defective parts |
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Fluidizing of powder insufficient or not |
- Fluidizing air volume to low - Powder cup not tight - Impurity or obstruction - Wear |
- Adjust with the green - Tighten powder cup properly - Clean fluidizing air connection and fluidizing disc in cup - Change parts (e.g. fuidizing disc) |