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Alignment – Gorman-Rupp Pumps 14C20-B 740693 and up User Manual

Page 14

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10 SERIES

OM-00680

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) DO NOT EX­
TEND BELOW PUMP
OFF LIQUID LEVEL

Figure 3. Typical Automatic Air Release Valve Installation

Connect the valve outlet to a bleed line which
slopes back to the wet well or sump. The bleed line
must be the same size as the outlet opening or
larger, depending on which Air Release Valve is be­
ing used. If piping is used for the bleed line, avoid
the use of elbows whenever possible.

NOTE

For multiple pump installations, it is recommended
that each Air Release Valve be fitted with an inde­
pendent bleeder line directed back to the wet well.
If multiple Air Release Valves are installed in a sys­
tem, do not direct bleeder lines to a common mani­
fold pipe. Contact your Gorman‐Rupp distributor or
the Gorman‐Rupp Company for information about
installation of an Automatic Air Release Valve for
your specific 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.

When checking alignment, disconnect
the power source to ensure that the
pump will remain inoperative.