Gorman-Rupp Pumps SFV4A 1476537 and up - Manual (Page 12)

OM-06401 SF SERIES
PAGE B - 4 INSTALLATION
Motor Cable Grounding Test
Do not connect the pump power or con­
trol cables to the control box or incom­
ing voltage before verifying the pump
ground. Otherwise, personnel will be
exposed to serious injury or death.
Connect one lead of a lamp, bell or similar testing
device to the motor cable green/yellow ground
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 Figure 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