AIRLESSCO GS6250 - Manual (Page 19)

Troubleshooting
3A1187E 19
Troubleshooting
General
Problem Cause Solution
There is spitting from the gun. The fluid supply is low or empty. Refill the supply container.
Air entrapped in the fluid pump
or hose. Check for loose connections on the siphon
assembly, tighten, then reprime pump.
Paint leaks into the wet cup The packing nut/wet cup is
loose. Tighten just enough to stop leakage.
The upper packings are worn or
damaged. Replace the packings. See Packing Replace-
ment Procedures, page 14.
Worn Piston Rod. Replace Piston Rod.
The engine operates, but the
paint pump doesn’t cycle. The pressure setting is too low. Increase the pressure.
The clutch is not engaged. See Electrical Troubleshooting.
The displacement pump is
seized. Service the pump. See Packing Replace-
ment Procedures, page 14.
The engine and displacement
pump operates, but paint
pressure is too low or none. The pressure setting is too low. Increase the pressure.
The tip or gun filter is clogged. Remove the tip and/or filter and clean them.
The tip is worn. Replace tip.
The fluid displacement pump
filter is clogged. Clean the filter.
There is a large pressure drop
in the fluid hose. Use a larger diameter hose.
The displacement pump oper-
ates, but the output is too low
on the downstroke or both
strokes. The inlet valve ball is not seat-
ing properly. Service the Inlet Valve, page.
The displacement pump oper-
ates, but the output is too low
on the upstroke. The outlet valve ball is not seat-
ing properly. Service the Outlet Valve, page 13.
The lower packings are worn or
damaged. Replace the Packings, page 14.