Cleaning Airless Spray Gun; Remedy In Case Of Faults - WAGNER ProSpray 3.21 Original Operating Manual

Cleaning the unit (shutting down)
8.3

Cleaning Airless spray gun

1. Rinse Airless spray gun with an appropriate cleaning agent.
2. Clean tip thoroughly with appropriate cleaning agent so that
no coating material residue remains.
3. Thoroughly clean the outside of the Airless spray gun.
Intake filter in Airless spray gun
Disassembly (Fig. 10)
1. Pull protective guard (1) forward vigorously.
2. Screw grip (2) out of the gun housing. Remove intake filter (3).
3. Intake filter congested or defective – replace.
9.

Remedy in case of faults

Type of malfunction
A. Unit does not start
B. Unit does not draw in material
C. Unit draws in material, but the
pressure does not build up
GB
Possible cause
1. No voltage applied.
2. Pressure setting too low.
3. ON/OFF switch defective.
1. Relief valve is set to SPRAY (p spray).
2. Filter projects over the fluid level and
sucks air.
3. Filter clogged.
4. Suction hose/suction tube is loose, i.e.
the unit is sucking in outside air.
1. Tip heavily worn.
2. Tip too large.
3. Pressure setting too low.
4. Filter clogged.
5. Coating material flows through the
return hose when the relief valve is in
the SPRAY (p spray) position.
6. Packings sticky or worn.
7. Valve balls worn.
8. Valve seats worn.
Assembly
1. Place intake filter (3) with the long cone into the gun housing.
2. Screw in grip (2) into the gun housing and tight en.
3. Slot in protective guard (1).
1
Measures for eliminating the malfunction
1. Check voltage supply.
2. Turn up pressure control knob.
3. Replace.
1. Set relief valve to PRIME (k circulation).
2. Refill the coating material.
3. Clean or replace the filter.
4. Clean connecting points. Tighten suction tube.
1. Replace
2. For selection of a smaller tip, see Tip table on Page 20.
3. Turn pressure control knob clockwise to increase.
4. Clean or replace the filter.
5. Remove and clean or replace relief valve.
6. Remove and clean or replace packings.
7. Remove and replace valve balls.
8. Remove and replace valve seats.
14
Remedy in case of faults
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2 5
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rn in
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e p
ti p
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3
2
ProSpray 3.29 • 3.31