EBARA EFQT12 - Manual (Page 31)

EBARA Fluid Handling 30
Suction Check Valve Reassembly
Install the stainless steel flat washers (77) onto
the pivot arm; two on each side of the flap valve
(81).
Secure the flap valve and pivot caps (78) to the
check valve body using the attaching hardware
(75 and 80).
NOTE!
The flap valve must be positioned so that
½”diameter core holes face toward the
interior of the pump.
Secure the check valve assembly (74) to the
suction elbow with the “Victaulic” coupling. Be
sure the rubber gasket is properly seated and
not damaged.
Reach through the access opening and check
the operation of the check valve to insure proper
seating and free movement.
Replace the access cover gasket (6) and secure
the cover using the clamps (7) and cover screws
(9).
Reinstall the suction and discharge piping.
Before starting the pump, make certain the
pump and power source are properly aligned,
the piping is secure, the casing filled with liquid,
and all connecting valves are open.
LUBRICATION
Seal Assembly
Before starting the pump, remove the air vent
fitting from the top of the sight gauge assembly
(84) and fill the reservoir with S.A.E. #30, non-
detergent oil. The oil level must be maintained
above the oil level indicated, or at least 2 inches
of oil from the bottom of the glass. Clean and
reinstall the air vent fitting.
Periodically, clean and reinstall the seal cavity
air vent (25).
Bearings
The bearing housing oil level must be
maintained at the midpoint of the oil level sight
gauge (36).
When oil is required, remove the pedestal air
vent (26), and fill the bearing housing with a
good grade of non-detergent SAE n° 30, non-
detergent motor oil to the midpoint of the oil
level sight gauge. Clean and reinstall the
pedestal air vent. Do not overfill. Overfilling
will cause excessive heat resulting in
shortened bearing life.
Under normal conditions, change the oil each
5000 hours of operation, or at 12 month
intervals, which ever occurs first. In dirty or
humid conditions change more frequently.
For cold weather operation, consult factory or
lubricant supplier for recommended grade of
oil.