OM-06704 PA SERIES
OPERATIONPAGE C - 2
the relay to cool after tripping before press
ing the reset.
If replacing the heater pack, press the reset
button to set the relay.
NOTE
If the circuit breaker trips, do not reset it immedi
ately. Wait at least ten minutes before resetting the
control handle back to the ON position. If the over
load unit continues to trip, operational problems ex
ist.
The pump motor will restart as soon as
the RESET pushbutton is pressed, un
less the selector switch is in the OFF po
sition. Turn the selector switch to OFF
and move the control handle to OFF be
fore approaching the pump.
The optional liquid level system operates in
conjunction with the 3‐position switch
(HAND‐OFF‐AUTO) on the control box. After
the float(s) have been installed as described
in INSTALLATION, Section B, pump opera
tion may be automatically controlled for fill
ing or dewatering functions.
The green run light indicates the pump is
running. The light will be energized when
the 3‐position switch is in the HAND position
or when the pump is running with the switch
in the AUTO position.
Always terminate incoming power to the control
box before investigating control box circuitry prob
lems.
Always terminate power to the control
box before performing service func
tions.
Power through the control box may be terminated
by moving the control handle to the OFF position,
thereby opening the circuit breakers. This stops
the pump, but does not terminate incoming power
through the field wiring connected to the control
box.
Rotation
The correct direction of pump rotation is indicated
by an arrow on the pump body or accompanying
decals. If the pump is operated in the wrong direc
tion, the pump could be damaged and perform
ance will be adversely affected.
The pump must operate in the direction in
dicated by the arrow on the pump, or ac
companying decals. Reverse rotation
could damage the pump and adversely af
fect performance.
To check rotation, operate the motor while observ
ing the direction of the motor shaft.
If rotation is incorrect, have a qualified electrician
interchange any two of the three phase wires at the
line connection to change direction.
Priming
The pump will begin to prime upon startup. The air
in the suction line will be discharged from the prim
ing chamber discharge line. Complete priming is
indicated by a positive discharge pressure read
ing.
If full priming is not achieved, the discharge check
valve may be malfunctioning. If this occurs, shut
down the pump and consult the separate Mainte
nance and Repair manual for further details.
Leakage
Once the pump is fully primed, no leakage should
be visible at pump mating surfaces, or at pump
connections or fittings. Keep all line connections
and fittings tight to maintain maximum pump effi
ciency.
Pump Vacuum Check
Read the vacuum gauge with the pump primed
and at operation speed. Shut off the pump. The
To Next Page
Loading...
Need help?
General