Owner's manual

10
Motor blows air out main exhaust when stalled
on either stroke.
 U-cups inserted incorrectly, damaged, or
missing.
 Ceramic valves damaged or contaminated
with debris (7).
 Pilot valve not correctly oriented.
 Check (2B & 2D) U-cups on major valve
spool.
 Check (7) ceramic valves for debris or
damage.
 Be certain to load the pilot valve in the
proper orientation per diagram found within
the center-body.
Low fluid output volume.
 Low or blocked incoming air supply.
 Outlet plumbing blockage.
 Pump not primed.
 Suction pipe too small or suction hose not
rigid (kinks or collapses).
 Leak in inlet suction plumbing.
 Pump blocked internally with debris
 Check air supply.
 Check for any obstruction in the outlet
plumbing.
 The pump must be mounted vertically for
checks to properly work.
 Check for pump cavitation - the suction pipe
should be sized at least as large as the inlet
thread diameter. The suction hose must be
rigid or non-collapsible.
 Check all inlet plumbing for possible suction
leaks.
 Inspect the pump for debris that could block
TROUBLE SHOOTING
Symptom
Possible Cause Repair
Fluid discharged from exhaust outlet
 Ruptured Diaphragm (20)
 Diaphragm Nut loose (4A)
 Replace Diaphragm (20)
 Tighten loose Diaphragm Nut (4A)
Air bubbles in fluid discharge.
 Leak in suction side plumbing
 Leak at Inlet Collar (4C)
 Leak at Diaphragm Nut (4A)
 Check connections of suction plumbing.
 Check torque of Inlet Collar (4C)
 Check torque of Diaphragm Nut (4A)