Gorman-Rupp Pumps PA6A60-4045D 1110032 thru 1115250 - Manual (Page 22)

OM−04402 PA SERIES PUMPS
OPERATION PAGE C − 7
Safety Shutdown System
The unit is equipped with a safety system to auto-
matically shut down the engine under certain con-
ditions. The engine will automatically shut down:
1. If the engine exceeds its safe operating tem-
perature.
2. If the engine oil pressure drops below design
limits.
3. If the engine fails to start within a pre-set peri-
od of time.
4. If the engine speed exceeds the safe operat-
ing range.
5. If the engine fan belt breaks (Deutz powered
units).
Lights on the control panel will indicate which of the
safety features has caused the engine to shut
down.
Should any of the safety features cause the engine
to shut down, the cause must be determined and
corrected before putting the unit back into service.
The engine will not restart until the key switch has
been returned to the ‘OFF’ position for at least 10
seconds.
All safety shutdown features are pre-set at the fac-
tory for optimum performance and safety; do not
attempt to adjust these settings.
Never disconnect any of the safety shut-
down features; this will void the warran-
ty and could result in serious damage to
the unit and/or injury to personnel. Safe-
ty shutdown features are pre-set at the
factory; do not attempt to adjust any of
the settings. Determine the cause of
shutdown before putting the unit back
into service. Consult the factory for ad-
ditional information.
PERIODIC CHECKS (All Models)
Seal Cavity And Bearing Lubrication
Both the seal and bearing cavities were fully lubri-
cated at the factory. Check the lubrication levels
before startup, and regularly thereafter as indi-
cated in the Maintenance and Repair Manual.
When lubrication is required, use only SAE No. 30
non-detergent oil.
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 the Maintenance
and Repair Manual). Bearing overheating can also
be caused by shaft misalignment and/or excessive
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.
PERIODIC CHECKS (Engine Driven
Units)
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.