Gorman-Rupp Pumps S3B65-E6 460/3 861279 thru 1217130 - Manual (Page 29)

S SERIES PUMPS OM−04151
PAGE C − 3 OPERATION
The electrical power used to operate
this pump is high enough to cause inju-
ry or death. Make certain that incoming
power is off and locked out before inter-
changing motor leads.
DIRECTION OF
KICKBACK
AT STARTUP
Figure C−1. Checking Pump Rotation
STARTING, STOPPING, AND
OPERATIONAL CHECKS
Starting
Do not attempt to operate the pump until
impeller rotation has been checked; im-
proper rotation will affect pump perform-
ance and may damage the pump.
Follow the instructions accompanying the control
box, start the pump, and run any recommended
checks.
Never start the pump more than 6 times per
hour. If the pump motor does not cool be-
tween starts, it will over-heat, resulting in
damage to the motor windings.
Stopping
Follow the instructions accompanying the control
box for stopping the pump.
On pumps equipped with a motor ther-
mal protector, the integral thermal over-
load device will shut off the motor if the
temperature rises above design limits.
When the pump cools and the tempera-
ture falls below these limits, the motor
will restart automatically. To avoid the
hazards of an unexpected motor start-
up, do not attempt to handle or service
the pump unless all power to the motor
has been shut off and locked out at the
control box; otherwise, serious person-
al injury could result.
During motor shutoff by the thermal
overload device, control box circuits re-
main live. Do not attempt to service any
control box components unless incom-
ing power has been shut off.
To stop the pump, turn the control handle OFF,
thereby opening the circuit breakers. This does
not terminate incoming power through the field
wiring connected to the control box.
After stopping the pump, be sure to perform all re-
quired maintenance and preservation procedures.
Operational Checks
To detect minor problems, check the pump for
proper operation when it is first started, and at peri-
odic intervals during operation.