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Gorman-Rupp Pumps PA6C60-4045T 1416818 thru 1481444 User Manual

Page 12

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PA SERIES

OM-06199

PAGE B - 5

INSTALLATION

Figure 2. Recommended Minimum Suction Line Submergence vs. Velocity

DISCHARGE LINES

Siphoning

Do not terminate the discharge line at a level lower
than that of the liquid being pumped unless a si­
phon breaker is used in the line. Otherwise, a si­
phoning action causing damage to the pump
could result.

Valves

This pump is designed with a check valve in the
discharge line.

If a throttling valve is desired in the discharge line,
use a valve as large as the largest pipe to minimize
friction losses. Never install a throttling valve in a
suction line.

With high discharge heads, it is recommended that
a throttling valve be installed in the discharge line
to protect the pump from excessive shock pres­
sure and reverse rotation when it is stopped.

If the application involves a high discharge
head, gradually close the discharge
throttling valve before stopping the pump.

ALIGNMENT

The alignment of the pump, air compressor and
engine is critical for trouble‐free mechanical opera­
tion. See Section E, Securing Intermediate And
Drive Assembly To Engine
in MAINTENANCE
AND REPAIR
, for details.

AUTO‐START

The standard pump is equipped with an auto‐start
control system which allows the pump to start and
stop as the liquid level in the wet well or sump rises
and falls.

Refer to the information which follows for installa­
tion details for the liquid level sensing system pro­
vided with your pump.