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Alignment – Gorman-Rupp Pumps 16A22-B 1068713 and up User Manual

Page 13

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10 SERIES

OM−00711−04

PAGE B − 7

INSTALLATION

DISCHARGE PIPE

DISCHARGE

CHECK VALVE

PUMP DISCHARGE

SELF-PRIMING

CENTRIFUGAL

PUMP

SUCTION

LINE

SUPPORT

BRACKET

CLEAN-OUT

COVER

INSTALL AIR RELEASE VALVE

IN HORIZONTAL POSITION

90

_ LONG

RADIUS

ELBOW

WET WELL

OR SUMP

BLEED LINE 1"
(25,4 MM) DIA. MIN.
(CUSTOMER FUR-
NISHED) EXTEND 6"
(152 MM) BELOW
PUMP OFF LIQUID
LEVEL

Figure B−5. Typical Automatic Air Release Valve Installation

The valve inlet line must be installed between the
pump discharge port and the non-pressurized side
of the discharge check valve. The valve inlet is at
the large end of the valve body, and is provided
with standard 1 inch NPT pipe threads.

The valve outlet is located at the opposite end of
the valve, and is also equipped with standard 1
inch NPT pipe threads. The outlet should be con-
nected to a bleed line which slopes back to the wet
well or sump. The bleed line must be the same size
as the inlet piping, or larger. If piping is used for the
bleed line, avoid the use of elbows whenever pos-
sible.

NOTE

It is recommended that each Air Release Valve be
fitted with an independent bleeder line directed
back to the wet well. However, if multiple Air Re-
lease Valves are installed in a system, the bleeder
lines may be directed to a common manifold pipe.
Contact your Gorman-Rupp distributor or the Gor-
man-Rupp Company for information about installa-
tion of an Automatic Air Release Valve for your spe-
cific application.

ALIGNMENT

The alignment of the pump and its power source is
critical for trouble-free mechanical operation. In
either a flexible coupling or V-belt driven system,
the driver and pump must be mounted so that their
shafts are aligned with and parallel to each other. It
is imperative that alignment be checked after the
pump and piping are installed, and before opera-
tion.

NOTE

Check Rotation, Section C, before final alignment
of the pump.

When mounted at the Gorman-Rupp factory, driver
and pump are aligned before shipment. Misalign-
ment will occur in transit and handling. Pumps
must be checked and realigned before operation.
Before checking alignment, tighten the foundation
bolts. The pump casing feet and/or pedestal feet,
and the driver mounting bolts should also be tightly
secured.