Gorman-Rupp Pumps SFV4A-X 1531245 and up - Manual (Page 13)

OM-06628 SFV SERIES X‐PROOF PUMPS
PAGE B - 5 INSTALLATION
able at the motor must be within the range indi­
cated in Table B‐2.
Table B‐2. Pump Voltage Requirements
NOMINAL
VOLTAGE
3
3
230
460
207
414
253
506
PHASE
MINIMUM
VOLTAGE
MAXIMUM
VOLTAGE
3 208 187 229
1 230 207 253
3 575 517 632
Use conduit cable clamps to secure the incoming
field wiring to the control box. Make certain all con­
nections are tight. If necessary, support the cable
weight to prevent excessive strain on cable clamps
and cable.
Refer to the wiring diagrams at the end of this sec­
tion for field wiring connections.
Dual Voltage
This pump was wired at the factory only
for the voltage shown on the nameplate.
Do not attempt to change the voltage on
a dual‐voltage motor. If desired to have
the voltage changed, return the pump to
the factory or to an authorized Gorman‐
Rupp repair facility only; otherwise, the
pump warranty will be negated, and
damage to the pump, and injury or death
to personnel can result.
Motor Cable Grounding Test
Do not connect the pump control cable
to the control box or incoming 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 motor powering this pump is ap­
proved by either CSA and/or FM for
Class 1, Division 1, Groups C and D en­
vironments. Refer to the nameplate on
your pump for agency approval inform­
ation. Any liquid level devices used with
the pump must be intrinsically safe for
use in these environments.
Any control box used to operate the
pump must meet all applicable local
and national codes for the application. If
the control box is to be installed in an ex­
plosive environment, it must be a Nema
7 rating or better. If a non‐explosion
proof control box is used, it must be lo­
cated outside the explosive environ­
ment. Improper location of a non‐explo­
sion proof control box could result in de­
struction of equipment, injury, or death
to personnel.
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