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Page 4 of 4 66260X
PN 97999-75
TROUBLE SHOOTING
No material at outlet. (Pump continuously cycles).
Empty material supply. Disconnect the air, replenish the
material supply.
Foreign matter is holding foot valve seats open in lower
pump tube assembly. Remove lower pump tube assem-
bly and clean valve seats.
Pump operates sluggishly, tends to stick when air is
applied or control is opened.
Air motor is dirty or lacks lubrication. Clean air motor.
Insu cient air pressure or volume of air. Check air supply.
y
y
y
y
Air bypasses through exhaust port.
Foreign matter is holding air valve open or lacks lubrica-
tion. Consult factory for nearest Service Center.
Motor stalls.
Foreign matter in pump, hose, control valve or spray tip
obstructing material flow. Check material supply hose
and control valve or tip.
Air not getting to pump. Check air supply.
y
y
y