Gorman-Rupp Pumps PA4E71C-3TNV88-SE 1416614 and up - Manual (Page 15)

OM−06244 PA SERIES
OPERATION PAGE C − 2
AL’. After the engine starts and the unit is fully
primed, adjust the engine RPM until the desired
flow rate is achieved.
Pump speed and operating condition
points must be within the continuous per-
formance range shown on the curve on
Page E-1.
Automatic Starting
With the float system installed, follow the proce-
dures outlined for manual starting and throttle ad-
justment. Switch the keyswitch to ‘OFF’ until the
water level rises above the on point for the float sys-
tem, then turn the keyswitch to the ‘AUTO’ setting.
The unit will run until the float signals the control
that the water in the wet well is at the float off point,
at which time the unit will shut down automatically.
When the float signals the control that the water in
the wet well is at the float on point, the unit will re-
start automatically, repeating the cycle.
Priming
The pump will begin to prime upon startup. The air
in the suction line will be discharged from the educ-
tor discharge line. Complete priming is indicated
by a positive discharge pressure reading.
If full priming is not achieved, the discharge check
valve may be malfunctioning. If this occurs, shut
down the pump and consult the separate Mainte-
nance and Repair manual for further details.
ROUTINE OPERATION
Do not operate an internal combustion
engine in an explosive atmosphere.
When operating an internal combustion
engine in an enclosed area, make sure
exhaust fumes are piped to the outside.
These fumes contain carbon monoxide,
a deadly gas that is colorless, tasteless
and odorless.
Adjust the engine speed to achieve the desired
output. Do not exceed the factory set engine speed
and system operating pressure. Do not operate
below the recommended operating speed (if appli-
cable).
Never tamper with the governor to gain
more power. The governor establishes
safe operating limits that should not be
exceeded. Refer to the Performance
Curve in the separate Parts List Manual
for the maximum continuous operating
speed for this pump.
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.