Gorman-Rupp Pumps 112D60-B 1288322 and up - Manual (Page 34)

OM−01830 10 SERIES
MAINTENANCE & REPAIR PAGE E − 11
Final Pump Assembly
Install the shaft key (42) and reconnect the pump to
the power source. Be sure the pump and power
source are proper aligned, (see Alignment in IN-
STALLATION) before installing the leveling shims
and base mounting hardware.
Fill the pump casing with clean liquid. Reinstall the
cover plate assembly (5) and gasket (6) and
tighten it.
Be sure the pump and power source are securely
mounted to the base and that they are properly
aligned. If used, removed the eye bolt used to lift
component parts.
Install the suction and discharge lines and open all
valves. Make certain that all piping connections are
tight, properly supported and secure. Open all the
valves in the suction and discharge lines.
Be sure the pump and power source have been
properly lubricated, see LUBRICATION.
Refer to OPERATION, Section C, before putting
the pump back into service.
PRESSURE RELIEF VALVE
MAINTENANCE
The suction elbow is equipped with a pressure re-
lief valve (81) to provide additional safety for the
pump and operator (refer to Liquid Temperature
And Overheating in OPERATION).
It is recommended that the pressure relief valve as-
sembly be replaced at each overhaul, or any time
the pump overheats and activates the valve. Never
replace this valve with a substitute which has not
been specified or provided by the Gorman-Rupp
Company.
Periodically, the valve should be removed for in-
spection and cleaning. When reinstalling the relief
valve, apply ‘Loctite Pipe Sealant With Teflon No.
592’ or equivalent compound, on the relief valve
threads. Position the valve air vent with the dis-
charge port pointing down.
LUBRICATION
Bearings
The pedestal was fully lubricated when shipped
from the factory. Check the oil level regularly and
maintain it at the midpoint of the sight gauge (48).
When lubrication is required, unscrew the air vent
(27) and fill the pedestal with SAE No. 30 non-det-
ergent oil. Clean and reinstall the pedestal air vent.
When lubricating a dry (overhauled) pedestal, add
approximately 128 ounces (3,8 Liters) of oil. Do not
overfill. Over-lubrication can cause the bearings to
over-heat, resulting in premature bearing failure.
Under normal conditions, change the oil each
5000 hours of operation, or at twelve month inter-
vals, which ever occurs first. Change the oil more
frequently if the pump is operated continuously or
installed in an environment with rapid temperature
change.
Monitor the condition of the bearing lubri-
cant regularly for evidence of rust or mois-
ture condensation. This is especially im-
portant in areas where variable hot and
cold temperatures are common.
For cold weather operation, consult the factory or a
lubricant supplier for the recommended grade of
oil.
Seal Assembly
Check the seal lubricant before starting the pump
and periodically during operation. Fill the bottler
oiler with SAE No. 30 non-detergent oil. Check the
oil level regularly and maintain it at the level indi-
cated on the bottle oiler.
Periodically clean and reinstall the seal cavity air
vent (26).
Power Source
Consult the literature supplied with the power
source, or contact your local power source repre-
sentative.