Gorman-Rupp Pumps PAH4C60-6068H 1532412 and up - Manual (Page 17)

OM-06476 PAH SERIES
OPERATION PAGE C - 3
Because the operator can choose to post­
pone the regeneration process, the ECU
could eventually force a regeneration, re­
sulting in loss of performance or even a to­
tal shut down of the engine. Refer to the
manual accompanying the engine for a de­
tailed explanation of the regeneration pro­
cess and the indicator symbols that will
display on the Engine Control Unit. Follow
all of the instructions in the engine manual
to ensure uninterrupted operation of the
engine.
Operation In Extreme Heat
The safety shutdown system will automatically
stop the unit if engine operating temperature ex­
ceeds design limits. If engine over‐temperature
shutdown occurs, allow the unit to cool before re­
starting.
If engine overheating continues, check the engine
lubricant level and viscosity. Consult the engine
operation manual for the recommended lubricant
for operation in extreme heat.
If the unit is being operated in the automatic mode,
adjust the float(s) to allow shorter run and longer
cooling periods, if possible.
This pump is equipped with automatic
liquid level controls, and is subject to
automatic restart. Keep hands and
clothing away from the unit to prevent
injury during automatic operation. Dis­
connect the battery before performing
any maintenance. Failure to do so may
result in serious personal injury.
OPERATIONAL CHECKS
Leakage
Once the pump is fully primed, no leakage should
be visible at pump mating surfaces, or at pump
connections or fittings. Keep all line connections
and fittings tight to maintain maximum pump effi­
ciency.
Pump Vacuum Check
Read the vacuum gauge with the pump primed
and at operation speed. Shut off the pump. The
vacuum gauge reading will immediately drop pro­
portionate to static suction lift, and should then sta­
bilize. If the vacuum reading falls off rapidly after
stabilization, an air leak exists. Before checking for
the source of the leak, check the point of installa­
tion of the vacuum gauge.
Liquid Temperature And Overheating
The maximum liquid temperature for this pump is
160
_
F (71
_
C). Do not apply it at a higher operating
temperature.
Overheating can occur if operated with the valves
in the suction or discharge lines closed. Operating
against closed valves could bring the liquid to a
boil, build pressure, and cause the pump to rup­
ture or explode. If overheating occurs, stop the
pump immediately and allow it to completely cool
before servicing it. Approach any over‐heated
pump cautiously.
Allow an over‐heated pump to com­
pletely cool before servicing. Do not re­
move plates, covers, gauges, or fittings
from an overheated pump. Liquid within
the pump can reach boiling tempera­
tures, and vapor pressure within the
pump can cause parts being disen­
gaged to be ejected with great force. Af­
ter the pump cools, drain the liquid from
the pump by removing the casing drain
plug. Use caution when removing the
plug to prevent injury to personnel from
hot liquid.
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