Manual 1808 Rev B p/n 001808 0000
14
MAINTENANCE
07
GENERAL
Check the oil level daily for the rst week of
operation and weekly thereafter. The oil level
should be about midway on the sight gauge when
operating at low inlet pressures. However, the oil
level rises as the inlet pressure goes up. A good
check of the oil passage circuit is to change the
inlet pressure or open the gas ballast valve and
watch the oil level, which should rise as the inlet
pressure goes up. Check the condition of the
oil periodically by draining a small quantity into
a clean container and visually inspecting it for
solid or liquid contaminants. Change the oil when
contamination is present after making full use of
gas ballast to clean the oil. Change the oil when
the pump has logged 750 hours of operating time
or more often if an inspection of the oil dictates.
CHANGING OIL
Run the pump until the oil is warm (>100°F [38°C]),
then open the G.B. valve for a 1 – 2 minutes.
Then, stop the pump and open the drains in both
the pump and reservoir. Fill the pump with oil as
directed under Filling Pump with Oil on page
12. If the pump oil is badly contaminated,
additional changes may be necessary with a 10
minute operating period between changes to check
the pump blank-off pressure. Several oil changes
may be necessary under extreme conditions.
V-BELTS
To change the V-belt, loosen the motor mounting
screws and slide the motor toward the pump until
the old belt can easily be slipped from the pulleys.
The motor must be close enough to the pump to
enable the new belt to be slipped onto the pulleys
without rolling or stretching. When the belts are
in place, pull the slack of both belts to the same
point and tension the belts as shown in Figure
5-2 on page 10. Belts should not slip under full
load, that is, when starting, if the proper tension
is maintained. However, too much tension will
place an undue strain on the shaft bearings. Adjust
the tension on new belts after 24 to 48 hours of
operation.
GEAR DRIVE UNITS
NOT: N Ohe gear drive unit comes with an initial
charge of oil. Check the oil level every
3,000 hours or 6 months, whichever is
sooner. Recommended oil is Grade 6T.
DRAINING AND REFILLING OIL
Prior to Any Maintenance Operations
1. De-energize the drive and secure against it
unintentionally switching on.
2. Wait until the pump has cooled down. A hot
pump has skin burn and pressure buildup
hazards.
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