TROUBLE
POSSIBLE CAUSE
PROBABLE REMEDY
BEARINGS RUN
TOO HOT
Bearing temperature is high, but
within limits.
Align drive properly.
Drive misaligned.
Check for proper type and level of
lubricant.
Low or incorrect lubricant.
Check bearing temperature regu
larly to monitor any increase.
Check belt tension. Adjust as
required.
Excessive tension on drive belt.
Check level of lubrication.
OM-07297
DIAPHRAGM PRIMER
TROUBLESHOOTING
PAGE D - 2
PREVENTIVE MAINTENANCE
Pump applications are seldom identical, therefore
pump wear is directly affected by many different
factors. This section is intended only to provide
general recommendations and practices for pre
ventive maintenance. Regardless of the applica
tion however, following a routine preventive main
tenance schedule will help assure trouble‐free per
formance and long life from your Gorman‐Rupp Di
aphragm Primer. For specific questions concern
ing your application, contact your Gorman‐Rupp
distributor or the Gorman‐Rupp Company.
Record keeping is an essential component of a
good preventive maintenance program. The ap
pearance of wearing parts should be documented
at each inspection for comparison as well. Also, if
records indicate that a certain part fails at approxi
mately the same duty cycle, the part can be
checked and replaced before failure occurs, re
ducing unscheduled down time.
For new applications, a first inspection of wearing
parts at 500 hours will give insight into the wear rate
for your particular application. Subsequent inspec
tions should be performed at the intervals shown
on the chart below. Critical applications should be
inspected more frequently.
