Troubleshooting
3A2099D 9
Troubleshooting
I
Problem Cause Solution
Pump sight well fills and
overflows into adjacent
sight wells
Dirty or inoperative pump
discharge valves
1. Flush discharge check valves.
a. Turn feed regulator to full open.
b. Operate hand crank rapidly.
2. Remove discharge check valves if condition still exists.
a. Shut down unit or turn feed regulator to full closed.
b. Remove discharge line connections.
c. Remove outlet connection from pump unit.
d. Remove check valve. Clean and reseat, if neces-
sary, (care must be exercised to prevent marking
the bottom surfaces when reseating) or replace as
conditions require.
e. Check top and bottom surfaces of the check valve.
These must be free from radial nicks and
scratches, as these surfaces seal against the dis-
charge pressure. Any leakage around the threads
of the outlet connection can be traced back to a
dirty or marked check valve cage, outlet connector,
or cylinder sealing surfaces.
f. Install check valve in pump housing. Make sure the
ball and spring side of the cage faces up.
g. Replace outlet connection.
h. Replace discharge line connection and put pump
back in operation.
Erratic performance Pump cannot bring air
into sight chamber
through gasket due to
contamination with dirt or
paint
Make sure sight glass is open to atmospheric pressure
through the felt gasket between the glass and reservoir.
Gauge glass leakage SIght glass and/or gasket
is damaged
Drain lubricator. Check for leaks. Replace sight glass
and/or gasket.
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