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© Copyright 2021 Zoeller
®
Co. All rights reserved.
SINGLE PHASE WIRING INSTRUCTIONS
FOR YOUR PROTECTION, ALWAYS DISCONNECT PUMP FROM ITS POWER SOURCE BEFORE HANDLING.
Single phase pumps are
supplied with a 3-prong grounded plug to help protect you against the possibility of electrical shock.
DO NOT UNDER ANY CIRCUMSTANCES
REMOVE THE GROUND PIN.
The 3-prong plug
must
be inserted into a mating 3-prong grounded receptacle. If the installation does not
have such a receptacle, it must be changed to the proper type, wired and grounded in accordance with the National Electrical Code
and all applicable local codes and ordinances.
“Risk of electrical shock”
Do not remove power supply cord and strain relief or connect conduit directly to the pump.
Installation and checking of electrical circuits and hardware should be performed by a qualified licensed electrician.
Units supplied without a plug (single and three phase) and single phase nonautomatic units with a 20 amp plug must
have a motor control and liquid level control provided at time of installation. The control device should have suitable voltage, ampere,
frequency, grounding and horsepower rating for the pump to which it is connected.
NONAUTOMATIC
WIRING DIAGRAM
AUTOMATIC
WIRING DIAGRAM
153224
153223
1. All power circuits must be disconnected and locked out before any
attempts are made at servicing. The cutter rotor and disc can be
removed and sharpened by grinding the cutting faces. Both rotor and
disc must be removed from the pump. Removal of these parts can
be accomplished in the field by removing pump from the sump and
positioning horizontally to access the intake of the pump. If seals or
other repairs are required, the pump must be totally removed and
serviced in a shop by a qualified pump technician or authorized
service center.
2. Thoroughly clean the cutter rotor and disc assembly. Tilt pump
back to the vertical position to make certain the end play has been
removed. Check and record the clearance between the rotor and
disc with a feeler gage. The correct running clearance is between
0.003" (0.076 mm) and 0.008” (0.203 mm).
3. With pump in horizontal position, heat the hex head bolt in the center
of the rotor with a propane torch. The bolt must be heated to 350°
F (177° C) to soften the thread lock sealer on the bolt for ease of
removal. Remove the bolt by turning in a counterclockwise rotation.
It will be necessary to use a wood block to prevent the rotor from
turning while removing the bolt. Pull rotor from the shaft and remove
the spacer shims located behind the rotor.
4. Remove the screws holding the disc and remove disc from the pump.
5. The disc and the rotor cutter can be replaced with new service
parts or resurfaced by grinding. Resurfacing is accomplished by
surface grinding both disc and rotor to a 32 micro finish. Do not
attempt grinding in the field. Send parts to a qualified machine
shop for repair. The disc, rotor and shims are a matched set. Keep
parts together. Measure disc before and after resurfacing with
micrometer and record measurements.
6.
After resurfacing, the disc and rotor must be flat within 0.001” (0.025
mm). If the disc has been surface ground, it will be necessary to
remove shims to compensate for the material removed from the
disc plus any amount over 0.008” (0.203 mm) measured in the field
(step 2, above) before the rotor and disc were disassembled from
the pump. The shim thicknesses and disc should be measured
with a micrometer and the amount removed from the disc plus any
clearance over 0.008” (0.203 mm) must match the shim thickness
being removed.
7. Clean bottom of pump where disc is located and replace disc
and retainer screws. Replace rotor with the correct shims. Install
washer and torque to 30 in.-lbs. apply Loctite 262 thread-lock
sealant or equal to bolt threads prior to insertion. Check running
clearance with pump in vertical position to remove end play.
Clearance must be between 0.003" (0.076 mm) and 0.008” (0.203 mm)
to obtain efficient grinding when the pump is put back in service.
8. Check the oil in the motor housing on 803/805/807 pumps before
reinstalling. The level should be even with the fill plug when pump is
in the upright position. Add oil if required. Use insulating oil supplied
by the factory.
REPAIRS
These are the original installation instructions.
MOTOR
RUN
OVERLOAD
START
FLOAT
RELAY
1
2
5
4
2
1
3
SWITCH
COM
NC
L1 - BLACK
GREEN
L2 - WHITE
WHITE
BLACK
WHITE
START CAPACITOR
(1) BLUE
(2) RED
(3) YELLOW
BLACK
(1) BLUE
(2) RED
(3) YELLOW
BLACK
RUN CAPACITOR
MOTOR
RUN
OVERLOAD
START
RELAY
1
2
5
L1 - BLACK
GREEN
L2 - WHITE
WHITE
WHITE
START CAPACITOR
(1) BLUE
(2) RED
(3) YELLOW
BLACK
(1) BLUE
(2) RED
(3) YELLOW
BLACK
RUN CAPACITOR
