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Gorman-Rupp Pumps SFV3B 1473390 and up User Manual

Page 11

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SF SERIES

OM-06400

PAGE B - 3

INSTALLATION

shoe engages the discharge elbow/baseplate, it
will form an automatic seal.

If the pump is mounted on a trash stand, secure a
discharge hose or pipe to the optional discharge
elbow and use a suitable lifting device attached to
the lifting handle to lower the pump into the wet
well.

Make certain that the pump and stand sit level in
the wet well.

Regardless of the installation configuration, the
maximum recommended submergence depth
is 65 feet (20 meters)
.

After installation in the wet well, reel in any slack in
the cables so that they are not dragged into the
pump suction.

Piping

NOTE

Refer to Pump Performance in OPERATION -
SECTION C
when determining the most efficient
piping installation.

No suction piping is required in a standard sub­
merged operation.

Either hose or rigid pipe may be used to make dis­
charge connections. The discharge line must be
independently supported to avoid vibration and
strain on the pump. For maximum pumping capac­
ity, keep the line as short and straight as possible.
Elbows and fittings used in a discharge line in­
crease friction losses; minimize their use.

It is recommended that a check valve or throttling
valve be installed in the discharge line to control si­
phoning or back flow when the pump is shut off.

ELECTRICAL CONNECTIONS

Install and operate this pump in accor­
dance with the National Electrical Code

and all local codes. Have a qualified
electrician perform all checks and con­
nections in this section.

Never attempt to alter the length of the
pump motor cable or to repair it with a
splice. The power cable and pump mo­
tor must be kept completely waterproof.
Serious damage to the pump and injury
or death to personnel can result from
any alteration to the cable.

Field Wiring Connections (Incoming Power)

Field wiring is not provided with this pump, and
must be supplied by the user. The field wiring must
be of the proper size and type to ensure an ade­
quate voltage supply to the pump. Voltage avail­
able at the motor must be within the range indi­
cated in Table B-2.

TABLE B-2. MOTOR VOLTAGE LIMITS

NOMINAL

VOLTAGE

3

230

207

253

PHASE

MINIMUM

VOLTAGE

MAXIMUM

VOLTAGE

3

460

414

506

3

575

517

632

3

208

187

229

1

230

207

253

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.

Dual Voltage

230V and 460V versions of these pumps
are dual‐voltage; however, they are
wired at the factory only for the voltage
shown on the nameplate. Do not attempt
to change the voltage in the field. If de­
sired to have the voltage changed, re­