Electro Tech Spray Gun

OPERATION

The DE-501-JGC gun operation is different to models that have a needle valve to control the coating material flow. To shut coating material flow off, air pressure must be maintained on the diaphragm (7) to seal against seat (6). To prevent coating material leaks from the nozzle the regulated diaphragm air supply pressure "A" must be at least 0.5

CAUTION: to prevent accidental discharge of coating material always turn off and release coating material pressure when the gun is not in use.

1.      Mix, prepare and filter the coating material to be sprayed to the manufacturer's instruction.

2.      Adjust the spray gun control and regulate air and coating material pressures before turning on the air and coating material supplies.

à        Adjust the atomizing air pressure. Use the Pressure Test Unit (see accessorie ) to adjust the atomising air pressure. Follow the instruction in the Operation Manual Supplied with the unit

à        Adjust diaphragm air supply pressure "A" to 2 bar

à        Regulate coating material pressure to 0.4 bar

3.      Turn on atomizing and diaphragm air supply to the spray gun before turning on coating material supply. Test spray by operating atomizing and diaphragm air control valves.

If the finish is too wet or dry adjust the coating material supply pressure until the desired patted is achieved. 

CAUTION: Remember to increase the diaphragm air pressure if the coating material pressure is increased. 

If the atomization is too coarse increase the air pressure, if too fine reduce the air pressure.   The recommended spray distance is 305-308 mm (12" - 15") to suit article being sprayed. 

REPLACEMENT OF PARTS 

Note: Order numbers shown in parts list for figure 1 with suffix '-K5' etc. at the end of the order No. indicates a kit of parts. Example DE-501-JGC is a kit of five seals.

NOZZLE (2) AND BEFFLE (3)

Remove parts in the following order (1, 2, 3, 4 and 5) replace any worn or damaged parts. Reassemble in reverse order. Recommended tightening torque for nozzle (2) 14-16 nm (125 - 140 lbf in).

SEAT (6) or DIAPHRAGM (7)

Remove screws (10), top plate and diaphragm (7). Unscrew seat (6) using a 1/4" hexagon key. Replace worn or damaged parts. Reassemble in reverse order. Recommended tightening torque for screws (10), 4 Nm (35 lbf in.)

Note: Protective diaphragm (see accessories) is fitted between the gun body and the rubber diaphragm (7) to prevent solvent based coating material contacting the rubber diaphragm.

CONNCTORS (11 - 12).

Remove connector (11 or 12) and clean threads in gun body. Apply a medium strength thread locking/sealing compound to the taper thread of the new connector, screw into gun body and tighten. Recommended torque 16 Nm (140 lbf in).