GM5020 EACW (AIR COAT)

Electrostatic Air assist Airless Spray Gun

ไทย 

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GM5020EACW Front View

GM5020EACW Back View

For large workpiece from machine make or large complex workpiece and require high pressure spray for fast operating

High Pressure Spraying with supporting from electrostatic technology

 

The example of large workpiece, machine making by order, water tank, large metal furniture that it take operating time more than other type of workpiece even there have an electrostatic technology to support. In order to chive the objective of production that there have the time limit but it need to increase a production volume and reduce the material consumption. We can separate the condition and solution for following below requirement.

1. Quick Painting Cover a huge surface area and spend a few timing. Spraying with airless high pressure can respond this requirement.

2. Cover totally a workpiece surface for whole body  Spraying with air spray can reach the paint into the workpiece surface.

 

From above 2 requirements, there have only 1 spraying method that can achive a both 2 requirements in the same spray gun which is AirCoat method (Air assist airless). This method combine the advantages of air spray and airless spray which are the performance of spray pattern control (air spray) and high speed spraying without air (airless) then it make 2 main component of aircoat spray that it include high pressure spray pattern with start from 100 - 150 bar and low air pressure to control the high pressure spray pattern that it support to make atomizing flow cover the workpiece surface better than using airless spray only. The result that it spend a few operating time as it is sprayed with high speed pattern but it still cover completely a workpiece surface. So the GM5000EAC can achive the 3rd requirement on below;

3. Reducing the material consumption rate The electrostatic technology support the wrap around effect that it help to save the material consumption rate and also increase pace of operating time.

Therefore. the combination of 3 advantages make the GM5000EAC to be high speed spray gun, high performance of wrap around effect and material saving so many of user use this spray gun for large work piece on below picture (For further information of air coat method, please click the below link)

Large Machine with complex surface for some surface area. Using GM5020EACW can help to spray this kind of workpiece, save the paint material cost and reduce operating time that it increase the productivity yield so it is used for large furniture and middle size workpiece such as metal tank, gas tank, small water tank that the surface is less complex and evenly smooth in each corner.

GM5020EACW can be applied with extremely large object in order to increase pace of operation and make the film thickness to be evenly smooth.

Component of GM5020EACW

1

2

3

Air Cap

EAC's air cap make the low air pressure to control high pressure spray pattern to achive the good atomizing performance. There have 2 types for flat nozzle and round nozzle.

Nozzle

Nozzle for GM5020EACW will be separated for flat nozzle and round nozzle for perfect finish. If nozzle is clog after operating, you can re-insert nozzle by turning nozzle direction at 180 angle and spray out. The clog wil be push out from nozzle.

Gun Filter

As the high pressure spraying, the material must be small particle because the nozzle size is smaller than nozzle for air spray method and it is required the filter in order to avoid the clog in nozzle. You can change the filter without release paint hose for reducing the operating time.

Compatible for high pressure spray at 250 bar

For applying with high viscosity material, GM5020EACW is designed for spraying at 250 bar which is similar to ordinary airless spray gun and it is the highest pressure electrostatic spray gun in market so it can be used with high viscosity paint and can be used with special long high pressure paint hose.

Technical Data of GM5020 EACW

Dimension of GM5020EACW

Paint Resistant and Suitable application

Recommended Paint Resistant

Before explain about the suitable paint resistant, it is require to explain about 3 types of water-based chemical (or water-dilutable lacquers) which are following as below;

  • Non-ignitable lacquers

  • Hard to ignite lacquers

  • Ignitable lacquers

As above 3 groups of water-based chemical, it must be applied with non-ignitable lacquers water-based type only for electrostatic water-based spray gun. (Include apply under Aqua Coat system) and the specific resistance of the water-based paint must be between 0.5 kΩ cm and 1 MΩ cm.

Application for GM5020EACW

  • Every application must be comply with non-ignitable lacquers water-based chemical.

  • Automotive part, middle and large vehicle. Currently, the proportion of water-based paint is increased for production line.

  • Aircraft part that it require for water-based paint application.

  • Wood furniture (mangrove or wood which has moisture inside) with simply surface.

  • Metal work but the material should be stainless or another type of metal which rust resisted.

  • All above must be using within spray area which install ground system and has safety compliance.

Aeropart component

Large liquid Chemical Tank

Example spray booth for GM5020EACW

1

3

6

5

2

4

7

8

9

Minimum Cable Cross-Section

AquaCoat Cabinet - 4 mm2; AWG 12

Conveyor - 16 mm2; AWG 6

Spray Booth - 16 mm2; AWG 6

Spraying Stand - 16 mm2; AWG 6

  • Safe operation of the AquaCoat system is only guaranteed with a grounding connection.

  • Connect all ground cables using a short and direct route.

Suggestion for using pump, paint tank for electrostatic water-based gun

  • All paints, flushing agents and waste tanks have to be made of metal.

  • All tanks in the cabinet must be connected to the potential equalization. All further tanks must be grounded.

Component of standard spray booth

  1. Signal Ground

  2. Floor static dissipative

  3. Signal Ground

  4. Spraying Stand

  5. Plastic Cabinet which keep the paint pump and tank as the isolated zone for feeding unit.

  6. Control Unit VM5020W for electrostatic water-based spray gun

  7. Resistant rate for grounding system not more than 1 mOhm. This section transfer ground into workpiece hanger

  8. Workpiece

  9. Conveyor

Suit for painter

You can use standard paint suit. Especially, safety shoes and gloves, if used, must be static dissipative.

Suitable Viscosity Level of GM5020EACW

The viscosity rate is referred to lacquer as the main material and the recommend rate scale is DIN Cup 4 which is the viscosity cup with diameter size at 4 mm.

The recommend viscosity rate is 15 and 30 DIN sec according to below tale (Remark: DIN4 is the standard viscosity unit of industry at Germany, the measurement unit is second by counting from timing liquid fall down flow from cup. The below table is the compatative table with other standard rate)

Document: Viscosity Table

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Please click on left icon to see the bilingual document

The guidance of viscosity table for GM5020EACW

The recommend rate is 15 and 30 DIN Cup 4 sec so if we use the other standard rate, please refer to number on row 5 to row 12 in left table Therefore, the viscosity rate in the same row can use. For example, if you use ANEST IWATA NK-2, the recommend rate is 11 ad 31 NK-2 sec.

Accessories for GM5020EACW

(Please click "Details" for further information)

Control Unit VM5020W

The control unit for electrostatic spray gun solvent-based only and compatible to GM5020EAW and GM5020EAWC. The main duty is setting the voltage and current rate of spray gun. It can not be used with automatic spray gun and water-based spray gun version.

Nozzle and Air Cap (High Pressure)

Technical Data for nozzle and air cap of GM5020EACW that 2 these components are built for high pressure spray only. Presented by separating to flat nozzle and round nozzle.

Hose set for high pressure

The hose set which include the high pressure hose from WAGNER for 250 bar and WAGNER Air Hose which is built for using under aqua coat system and also include gun cable to link signal between spray gun and control unit

Paint Resistivity Meter

 

If you don't sure about material that there have suitable resistant rate or not, WAGNER has paint resistant meter which are RS500 that it show the figure rate from Ohm kOhm and mOhm.

Suitable Feeding Unit for GM5020EACW

(Please click "Details" for further information)

Diaphragm Unit

  • WAGNER Cobra

Piston Unit

  • WAGNER Ice Breaker

2K Mixing Unit

  • WAGNER Twin Control

  • WAGNER 2K Smart

  • WAGNER 2K Comfort

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