5 Operation
5.1 Safety
Instructions
Please pay special attention to the following safety instructions when using the spray
gun!
• Be sure to wear the required respiratory protection masks and protective over-
alls whenever you are operating the spray gun. Airborne particles represent a
health hazard.
• Be sure to wear suitable ear protection. The spray gun produces sound levels of
approx. 83 dB (A).
• No open fires, naked lights or smoking in the working area. The spraying of readily
inflammable media is accompanied by an increased risk of fire and explosion.
5.2
Requirements at the Start and Finish of Operation
The following requirements must be met before the spray gun is operated:
• The atomizing air pressure must be available at the gun
• The material pressure must be available at the gun.
Caution
The material pressure should not exceed 8 bar. The air pressure should not exceed 8
bar. Otherwise the operational reliability of the spray gun will be impaired.
Warning
It is important to remember to relieve the spray gun of all pressures when work is ter-
minated. Lines left under pressure may burst and the released material may injure
any persons in the vicinity.
5.3
Spray Pattern Test
Spray pattern tests should be performed whenever:
• the spray gun is taken into operation for the first time
• the spraying medium has been changed
• the spray gun was taken apart for maintenance or repair works.
The spray pattern is best tested using a workpiece sample, a sheet of metal, card-
board or paper.
Warning
Keep your hands or other parts of the body away from the spray gun nozzle under
pressure - risk of injury.
Warning
Make sure that no other people are in the spraying zone when the spray gun is star-
ted - risk of injury.
1. Start the gun to produce a spray pattern sample (see 5.2 Requirements
at the Start and Finish of Operation).
2. Inspect the sample and, if necessary, adjust the settings of the gun (see
5.4 Spray Pattern Adjustment).
5.4 Spray
Pattern
Adjustment
The spray pattern of the Pilot Misch-N can be adjusted as follows:
Adjusting the Material Flow Rate
The material flow rate is determined by the nozzle size and the material pressure.
Adjusting the Material Pressure
The material pressure can only be adjusted at the pump or the pressure tank.
Please follow the instructions and safety instructions issued by the manufacturer.
Adjusting the Flat-Jet
The width of the spray jet can be infinitely varied by the wide jet regulator
(item 11).
5.5
Retooling the Spray Gun / Repairs
Air control head, material control nozzle and needle packing, all chosen for a par-
ticular spraying material, together form a unit - the nozzle insert assembly. Always
change the complete insert assembly to maintain the desired spray finish quality.
Warning
Air and material inputs must be shut off prior to retooling - risk of injury.
Note
Please refer to the exploded view supplied with this manual when performing the
installation steps described on the following pages.
Replacement of Material Nozzle and Air Control Head
1. Unscrew the air cap nut (item 1).
2. Remove the air control head (item 2).
3. Remove the material control nozzle (item 4) from the gun body (item 6), using
wrench (width over flats 12.)
4. Remove the air cap seal (item 3) from the material nozzle.
Reassembly of the new nozzle insert and the remaining parts is performed in
reverse order. When mounting observe that the hole of the air control head exact
matches with the guide pin of the gun body. The nozzles are useable for different
application.
5
6
Summary of Contents for PILOT Misch-N
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