PX15P-XXX-XXX-AXXX (en)
Page 9 of 12
TROUBLE SHOOTING
Product discharged from air exhaust.
y
Check for diaphragm rupture.
y
Check tightness of (6) diaphragm washer.
Air bubbles in product discharge.
y
Check connections of suction plumbing.
y
Check “O” rings between intake manifold and inlet side
fl
uid caps.
y
Check tightness of (6) diaphragm washer.
Motor blows air or stalls.
y
Check (176) check valve for damage or wear.
y
Check for restrictions in valve / exhaust.
Low output volume.
y
Check air supply.
y
Check for plugged outlet hose.
y
Check for kinked (restrictive) outlet material hose.
y
Check for kinked (restrictive) or collapsed inlet material
hose.
y
Check for pump cavitation - suction pipe should be sized
at least as large as the inlet thread diameter of the pump
for proper
fl
ow if high viscosity
fl
uids are being pumped.
Suction hose must be a non-collapsing type, capable of
pulling a high vacuum.
y
Check all joints on the inlet manifolds and suction con-
nections. These must be air tight.
y
Inspect the pump for solid objects lodged in the dia-
phragm chamber or the seat area.
