309668
11
Troubleshooting
PROBLEM
CAUSE
SOLUTION
There are air bubbles in the fluid.
The suction line is loose, or there is
a lack of thread sealant.
Tighten the suction line. Use a
compatible liquid thread sealant or
PTFE tape on connections.
The diaphragm (401) is ruptured.
Replace the diaphragm.
See page 20.
The manifolds (102) are loose or
the o-rings (108) are damaged.
Tighten the manifold bolts (104) or
nuts (106); replace the o-rings
(108). See page 18.
The outer diaphragm plates (103)
are loose.
Tighten the plates. See page 20.
There is fluid in the exhaust air.
The diaphragm (401*) is ruptured.
Replace the diaphragm.
See page 20.
The outer diaphragm plates (103)
are loose.
Tighten the plates. See page 20.
The pump exhausts air at stall.
The air valve cup (5) or plate (13) is
worn.
Replace these parts.
See pages 15, 16.
The shaft seals (30
}
) are worn.
Replace the seals.
See page 20.
The pump exhausts air from the
clamps.
The clamps (111) are loose.
Tighten the clamp nuts (113).
See page 12.
The pump exhausts air near the air
valve.
The air valve screws (15) are loose. Tighten the screws.
See page 13.
The air valve o-ring (19) is
damaged.
Inspect; replace the o-ring.
See pages 15, 16.
The pump leaks fluid from the
check valves.
The o-rings (108) are worn or
damaged.
Inspect; replace the o-rings.
See page 18.
Summary of Contents for 234192
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