Gorman-Rupp Pumps SE1 1/2A3A 115V 1P 1483930 and up - Manual (Page 14)

OM−06489 SE SERIES
PAGE C − 2 OPERATION
The maximum liquid temperature for this pump is
120
_F (490_C). Do not apply it at a higher operat-
ing temperature.
Overheating can occur if the pump is made to start
and stop repeatedly without time to cool off be-
tween starts, the liquid level is allowed to fall too
low to sufficiently cool the motor, or if the circuit
breaker or fuse fails to provide adequate protec-
tion. Operating the pump against a closed dis-
charge valve for an extended period will also cause
the pump to overheat.
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 ser-
vicing.
5. Vent the pump slowly and cau-
tiously
6. Refer to instructions in this manual
before restarting the pump.
Impeller Rotation
Check impeller rotation as follows before operation
to ensure that the impeller is rotating in the correct
direction.
While checking impeller rotation, secure
the pump to prevent the power cable from
coiling.
Suspend the pump from the lifting device fitted on
the pump.
NOTE
For Autostart models, place a jumper wire across
the on-point and off-point sensing devices before
applying power to check pump rotation.
As viewed from the top, the pump should kick in a
counterclockwise direction; this will indicate that
impeller rotation is correct.
If the pump kicks in a clockwise direction, impeller
rotation is incorrect and the pump must be re-
turned to the factory or a Gorman-Rupp authorized
Submersible Repair Center. Remove the jumper
wire. Since the pump is powered by a single-phase
motor, the direction of rotation can not be altered
by interchanging motor leads at the control box.