AIRLESSCO GS800 - Manual (Page 16)

Troubleshooting
16 3A1186F
Troubleshooting
General
Problem Cause Solution
Unit doesn’t prime Airleak due to loose suction nut Tighten suction nut.
Airleak due to worn o-rings Replace o-ring (108526) on suction seat and
suction hose (331290), if so equipped.
Hole in suction hose Service outlet valve suction assembly.
Stuck or fouled balls
Unit primes but has poor or no
pressure Pressure set too low Turn up pressure.
Filter(s) are clogged Clean or replace gun filter, inlet filter, and/or
manifold filter.
Outlet valve fouled/worn. Service outlet valve.
Prime/pressure relief valve
bypassing Clean or replace prime valve.
Packings and/or piston worn Tighten packing nut, repack unit.
Unit does not maintain good
spraying pressure Blown spray tip Replace spray tip.
Packings and/or pistons worn Repack unit.
Upper seat worn Replace upper seat.