Service
10
311842G
•
If the sight glass continues to fill with lubricant:
a. Check all terminal check valves for proper
operation.
b.
Relieve system pressure
, page 8.
c. If valves are operating properly, disconnect
the discharge tubing (E) (F
. 10)
d. Remove 4 screws holding pump to cover
e. Remove pump assembly.
f. Clean pump assembly.
g. Reinstall pump assembly to cover and check
operation.
3.
If the sight glass still fills with lubricant it may be
caused by temperature variation.
•
When the unit is not operating:
a.
Relieve system pressure,
page 8.
b. Remove vent plug (F
c. Allow lubricant to pump down to the proper
level.
d. Replace vent plug.
The pump will now function properly. The
sight glass may fill with fluid without affecting
the operation of the lubricator as long as the
drip tube remains above the lubricant level to
show the rate of pumping.
•
When the unit is operating the sight level will
vary depending on temperature variations.
a. If the level falls to less than 1/4 inch above
the sight glass flange, add lubricant to the
proper level (3/8 inch below the discharge of
the drip tube) through the vent hole.
b. If the level is too high, remove the vent plug
and allow the unit to pump down before
replacing the vent plug.
Other servicing that may be required is listed below:
•
Clean lubricator periodically to eliminate contamina-
tion that may have occurred in the oil. To accomplish
this, remove all pumping units and clean the pumps
and reservoir by brushing loose all foreign matter,
dipping in solvent and blowing dry with compressed
air.
•
If external leakage is observed, determine the
cause (loose bolts, defective gaskets, or seals) and
repair as required.