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© Copyright 2017 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 or return to the factory 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
