Gorman-Rupp Pumps PA6A60-4045D 1110032 thru 1115250 - Manual (Page 21)

OM−04402 PA SERIES PUMPS
OPERATION PAGE C − 6
Strainer Check
Check the strainer regularly, and clean it as neces-
sary. The strainer should also be checked if pump
flow rate begins to drop. Monitor and record the
vacuum suction gauge readings regularly to detect
strainer blockage.
Never introduce air or steam pressure into the
pump casing or piping to remove a blockage. This
could result in personal injury or damage to the
equipment. If backflushing is absolutely neces-
sary, liquid pressure must be limited to 50% of the
maximum permissible operating pressure shown
on the pump performance curve.
STOPPING (Electric Motor Driven
Units)
Never halt the flow of liquid suddenly. If the liquid
being pumped is stopped abruptly, damaging
shock waves can be transmitted to the pump and
piping system. Close all connecting valves slowly.
After stopping the pump, lock out incomming pow-
er to ensure that the pump will remain inoperative.
STOPPING (Non-Auto-Start Engine
Driven Units)
Never halt the flow of liquid suddenly. If the liquid
being pumped is stopped abruptly, damaging
shock waves can be transmitted to the pump and
piping system. Close all connecting valves slowly.
Reduce the throttle speed slowly and allow the en-
gine to idle briefly before stopping.
If the application involves a high discharge
head, gradually close the discharge
throttling valve before stopping the pump.
After stopping the pump, switch off the engine igni-
tion and remove the key to ensure that the pump
will remain inoperative.
STOPPING (Auto-Start Engine Driven
Units)
Manual Stopping (Deutz Powered Units)
In the manual mode, reduce the throttle speed
slowly, and allow the engine to idle briefly before
switching the HAND-OFF-AUTO switch to ‘OFF’.
If the application involves a high discharge
head, gradually close the discharge
throttling valve before stopping the pump.
After stopping the pump, close and lock the control
panel cover, or disconnect the positive battery
cable to ensure that the pump will remain inopera-
tive.
Manual Stopping (John Deere Powered Units)
Never halt the flow of liquid suddenly. If the liquid
being pumped is stopped abruptly, damaging
shock waves can be transmitted to the pump and
piping system. Close all connecting valves slowly.
In the manual mode, reduce the throttle speed
slowly, and allow the engine to idle briefly before
switching the engine key switch to ‘OFF’.
If the application involves a high discharge
head, gradually close the discharge
throttling valve before stopping the pump.
After stopping the pump, close and lock the control
panel cover, or disconnect the positive battery
cable to ensure that the pump will remain inopera-
tive.
Automatic Stopping
In the automatic mode, the pump will stop when
the liquid in the wet well or sump lowers and acti-
vates the Off" float switch(s). The pump will restart
automatically when the liquid rises and activates
the On" float switch(s).