Gorman-Rupp Pumps SFV4C 1474143 and up User Manual
Page 12
OM-06403
SF SERIES
PAGE B - 4
INSTALLATION
lead (s). Connect the second test lead to an unin
sulated point on the pump body. The test circuit
should close.
If the test circuit does not close, there is a defect in
the cable or motor which must be corrected.
Control Box Connections
The pump warranty is void if the motor is
not operated through a control box ap
proved by Gorman‐Rupp.
This pump is shipped completely wired for the volt
age shown on the nameplate and is ready for op
eration through an approved control box.
Ground the control box in accordance with the in
structions accompanying it.
Ground the pump to the control box using the pow
er cable ground(s) and ground check wire (if so
equipped). Secure the ground wire(s) and ground
check wire (if so equipped) to the grounding lug(s)
inside the control box to ensure a thorough ground
for the pump.
Ground the pump using the power cable
ground wire(s) before applying line po
tential. Failure to properly ground the
pump could result in damage to the
pump or control and/or injury or death to
personnel.
Refer to Figures B-1 and connect the pump motor
cable to the control box.
Figure B-1. Three Phase Power
Cable Connections
Control leads P1 and P2 provide the motor with
thermal protection. Control leads W1 and W2 pro
vide the motor with moisture protection. Refer to
Figure B-3 and connect the pump control cable to
the control box.
Figure B-2. Control Cable Connections
The thermal protection contacts will auto
matically reclose when the motor cools to
the established safe operating tempera
ture. Whenever automatic restarting is not
desirable, connect only to controls which
are wired for manual restart.
Refer to the appropriate wiring diagram accompa
nying the control box when making electrical con
nections.