OM−05229
JSV3H
PAGE C − 2
OPERATION
Review all SAFETY information in Section A.
Follow the instructions on all tags, labels and
decals attached to the pump.
CONTROLS
The pump warranty is void if the motor is
not operated through a control box ap-
proved by Gorman-Rupp.
See the operating instructions furnished with the
control box, and with other optional accessories
and controls, before attempting to start the pump.
PUMP OPERATION
Liquid Temperature and Overheating.
Standard versions of this pump will handle
liquids with temperatures up to 104
_
F
(40
_
C) maximum. Do not install in service
with higher liquid temperatures; otherwise,
pump components and operation may be
affected.
Overheated pumps can cause severe
burns and injury. If the pump becomes
overheated:
1. Stop the pump immediately.
2. Allow the pump to completely cool.
3. Refer to instructions in this manual
before restarting the pump.
Overheating can occur if the control box fails to
provide overload or thermal protection, or if the
pump is operated against a closed discharge valve
for an extended period of time.
The submersible motor is cooled by the liquid be-
ing pumped. To minimize the chance of over-heat-
ing when installed in a
simplex
application, it is
recommended that at least one-third of the motor
remain immersed in the liquid.
Do not start the pump more than 10 times
per hour. If the motor does not cool be-
tween starts it will overheat, resulting in
damage to the motor windings or control
box components.
When installed in a standard alternating
duplex
application, where one pump runs while the other
is shut down, the pump may be operated continu-
ously until fully exposed. The shut down cycle will
provide sufficient time for the motor to cool.
Impeller Rotation
Refer to Figure C−1, and check impeller rotation
as follows before installing the pump on rails or in a
wet well.
FIGURE C−1. PUMP ROTATION
