Gorman-Rupp Pumps SM4G1-X30 460/3 1002211 thru 1241783 - Manual (Page 22)

SM SERIES OM−04417
OPERATION PAGE C − 2
Overheated pumps can cause severe
burns and injuries. If overheating of the
pump occurs:
1. Stop the pump immediately.
2. Ventilate the area.
3. Allow the pump to completely cool.
4. Check the temperature before
servicing.
5. Vent the pump slowly and cau-
tiously.
6. Refer to instructions in this manual
before restarting the pump.
Component Function
The control box contains the following hand-oper-
ated switches and controls:
D The control handle operates the control
box circuit breaker. In the OFF position, the
control handle opens the circuit breaker to
interrupt incoming power through the con-
trol box and prevent pump operation. In the
ON position, it closes the circuit breaker to
permit pump operation. The circuit breaker
will open or trip" automatically in the event
of a short circuit overload current, or thermal
excess within the pump motor. When
tripped, move the control handle to OFF and
back to ON to reset the circuit breaker.
D The control box contains an integral safety
switch which automatically trips" the circuit
breaker when the cover is removed. Never
remove the cover in an explosive atmos-
phere. Make certain incoming power is OFF
and LOCKED OUT.
D The motor is thermally protected by thermo-
stats within the stator. In the event of motor
overheating, the thermostat will open and
automatically trip" the control box circuit
breaker. The motor will not restart until the
circuit breaker is reset.
NOTE
If the circuit breaker trips, do not reset it immedi-
ately. Wait at least ten minutes before resetting the
control handle back to the ON position. If the over-
load unit continues to trip, operational problems ex-
ist. See TROUBLESHOOTING .
Liquid Temperature And Overheating
The maximum liquid temperature for this pump is
120
_ F (49_ C). Do not apply the pump at higher
operating temperatures.
Approach the pump cautiously after it
has been running. Although the motor is
cooled by the liquid being pumped, nor-
mal operating temperatures can be high
enough to cause burns. The tempera-
ture will be especially high if operated
against a closed discharge valve. Never
operate against a closed discharge
valve for long periods of time.
If overheating does occur, stop the pump immedi-
ately and allow it to cool before servicing it. Ap-
proach any overheated pump cautiously.
Overheated pumps can cause severe
burns and injuries. If overheating of the
pump occurs:
1. Stop the pump immediately.
2. Ventilate the area.
3. Allow the pump to completely cool.
4. Check the temperature before
servicing.
5. Vent the pump slowly and cau-
tiously.
6. Refer to instructions in this manual
before restarting the pump.
Overheating can occur if the pump is misapplied,
if it is started more than 6 times within one hour, if
the temperature of the liquid being pumped ex-
ceeds the temperature for which the pump was de-
signed, if the control box fails to provide overload