Gorman-Rupp Pumps PAH3B60-4045H 1493144 and up - Manual (Page 19)

OM-06474 PAH SERIES
OPERATION PAGE C - 5
Bearing Temperature Check
Bearings normally run at higher than ambient tem­
peratures because of heat generated by friction.
Temperatures up to 160
_
F (71
_
C) are considered
normal for bearings, and they can operate safely to
at least 180
_
F (82
_
C).
Checking bearing temperatures by hand is inaccu­
rate. Bearing temperatures can be measured ac­
curately by placing a contact‐type thermometer
against the housing. Record this temperature for
future reference.
A sudden increase in bearing temperatures is a
warning that the bearings are at the point of failing
to operate properly. Make certain that the bearing
lubricant is of the proper viscosity and at the cor­
rect level (see LUBRICATION in Section E, Main­
tenance and Repair). Bearing overheating can
also be caused by shaft misalignment and/or ex­
cessive vibration.
When pumps are first started, the bearings may
seem to run at temperatures above normal. Con­
tinued operation should bring the temperatures
down to normal levels.
Engine Fuel Filter
Consult the manual accompanying the engine,
and change the fuel filter periodically as indicated.
If operated under extremely dusty and/or humid
conditions, change the filter more frequently. Irreg­
ular performance and loss of power usually indi­
cate a dirty fuel filter.
Engine Oil
The engine was lubricated for test at the factory.
However, always check the lubrication level before
startup.
Consult the manual accompanying the engine,
and change the oil filter periodically as indicated. If
operated under extremely dusty conditions,
change the filter more frequently.
Air Compressor
The air compressor was lubricated for test at the
factory. However, always check the lubrication lev­
el before startup.
Consult the manual accompanying the air com­
pressor and preform all duties and checks as indi­
cated.
COLD WEATHER PRESERVATION
In below freezing conditions, drain the pump to
prevent damage from freezing. Also, clean out any
solids by flushing with a hose. Operate the pump
for approximately one minute; this will remove any
remaining liquid that could freeze the pump rotat­
ing parts. If the pump will be idle for more than a
few hours, or if it has been pumping liquids con­
taining a large amount of solids, drain the pump,
and flush it thoroughly with clean water. To prevent
large solids from clogging the drain port and pre­
venting the pump from completely draining, insert
a rod or stiff wire in the drain port, and agitate the
liquid during the draining process. Clean out any
remaining solids by flushing with a hose.