Pump Operation; Pump Maintenance - Pentair Hydromatic Dry Pit Installation And Service Manual

Solids handling dry pit pumps
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NOTE:
Clean,
fresh
supplied to the water jacket will
reduce the necessity of frequent
periodic cleaning of the water
jacket. This does not preclude
that the water jacket should not
periodically be cleaned.
Pump
Operation
Starting System:
1. Turn H-O-A switch to Off
position and then turn on main
circuit breakers.
2. Open all discharge valves and
allow water to rise in wet well.
3. Turn H-O-A switch to Hand
position on one pump and
notice operation. If pump is
noisy and vibrates, rotation
is wrong. To change rotation,
interchange any two line leads
to a three phase motor only.
DO NOT INTERCHANGE
MAIN INCOMING LINES. If
duplex system, check second
pump in the same manner.
4. Now set H-O-A switch to Auto
position and allow water to rise
in the wet well until the pump
starts. Allow pump to operate
until the level drops to turn-
off point.
5. Allow wet well level to rise to
start the other pump. Notice
run lights on the panel. Pumps
should
successive cycle of operation.
6. Turn both H-O-A switches
to Off position and allow wet
well to fill to the override
control level.
7. Turn both switches to Auto
position and both pumps should
start and operate together until
level drops to turn-off point.
8. Repeat this operation cycle
several times before leaving
water
job site.
9. Check voltage when pumps are
operating and check amp draw
of each pump. Check amps on
each wire, as sometimes a high
leg will exist. One leg can be
somewhat higher (5 to 10%)
without causing trouble. For
excessive amp draw on one
leg, the power company should
be consulted.
Phase Converters:
Phase converters are generally
not recommended, but in cases
where only single phase current is
available, phase converters can be
used. Be sure to size the phase
converter large enough for the
amp draw specified on the motor
nameplate, not necessarily by
motor horsepower. The warranty of
all three phase submersible motors
is void if operated with single phase
power through a phase converter
and 3 leg ambient compensated
extra-quick trip overload protectors
are not used.
alternate
on
each
Pump
Maintenance
Lubrication or other maintenance
is not required, as the motors are
oil filled.
Generally,
these
pumps
very reliable service, and can
be expected to operate for many
years without failure under normal
operating conditions.
Lightning:
In some areas where considerable
lightning occurs, we recommend
that a lightning arrestor be installed
at the control panel. Lightning
arrestors are good insurance against
damage to an expensive motor.
Servicing Instructions:
IMPORTANT:
instructions prior to replacing
any parts.
WARNING:
Before handling
these pumps and controls, always
isolate and disconnect power first.
Do not smoke or use any
sparkable electrical devices or
flames in a septic (gaseous) or
possible septic environment.
Field Service on Motor:
All dry pit pump motors out of
warranty can be serviced in the
field by any reliable motor service
shop. Any pump (in warranty)
must be returned to the factory for
service or repaired at an authorized
Hydromatic
service center. Charges
®
will not be allowed if (in warranty)
pump is not taken to an authorized
Hydromatic service center.
When field service is performed on
a pump, these instructions should
be carefully followed.
give
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