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© Copyright 2017 Zoeller
®
Co. All rights reserved.
Installation and servicing of the pump's electrical circuits and hardware should only be performed by a qualified, licensed electrician.
Risk of Electrical Shock. Do not remove power supply cord and strain relief or connect conduit directly to the pump.
Power cords, sensor cords, and float cords all must be sealed to prevent gases from the basin entering the control panel.
INSTRUCTIONS FOR CHECKING ROTATION OF THREE PHASE UNITS
It is very important that these units be connected for proper rotation. Since no rotating parts are visible without removing the
pump from the pit, the rotation on 3 phase units should be checked before installation into the pit as follows:
After the proper electrical connections are made, momentarily energize the pump to observe the direction of kick back due to starting torque.
The rotation is correct if the kick back is in the opposite direction of the rotation arrow. If the rotation is not correct, disconnect power and
switch any two power leads. Turn power back on and retest for proper rotation. If uncertain, the pump will draw the fewest amps when
rotating in the proper direction.
MOISTURE SENSORS (OPTIONAL FEATURE)
(1) Pumps with moisture sensors have a separate, small diameter sensor cord in addition to the power cord.
(2) Sensor cord conductor wires are connected to sensor probes in the lower seal cavity. The conductor wires are terminated in the control
panel for activating an indicator light when moisture is present in the lower seal cavity, motor cavity or cord cap assembly.
(3) When the moisture indicator light is activated, contaminants are present in the pump. The pump should be serviced within 30 days to
avoid damage to the motor and bearings.
(4) Oil in the motor housing and lower seal cavity should be checked when pump is serviced. If oil from the motor housing contains water
or other contamination, both seals should be replaced during maintenance. Always replace with new factory recommended oil and
service parts. All warranty repairs must be made by Zoeller
®
Authorized Service Stations.
(5) On existing applications where the control panel only has one moisture sensor hookup per pump, one moisture sensor lead from the
pump should be hooked to the moisture sensor lead in the panel, the other moisture sensor lead from the pump should be hooked to
ground to complete the circuit.
(6) Moisture sensor circuit can be checked for continuity (complete circuit) with a (Volt-OHM-Meter). Set the VOM to read resistance and
connect the VOM leads to the sensor cord black and white wires. The VOM should read approximately 330k Ohms when the pump is
moisture-free. Significantly lower resistance readings indicate that moisture has entered into the pump assembly. If VOM reading is
open, a problem exists with the moisture sensor circuit. Check resistance between the green ground conductor of the pump power cord
and the sensor cord black and white wires. This resistance reading should indicate an open circuit. If VOM reading returns a reading
other than open, a problem exists with the sensor circuit wiring or cordage. If resistance readings show a problem with either test, the
pump should be repaired by an authorized Zoeller
®
representative.
PUMPS WITHOUT MOISTURE SENSORS
(1) Double seal pumps offer additional motor protection but may be provided without sensor probes.
(2) Pumps without sensor probes should be serviced on a periodic preventative maintenance schedule.
(3) Oil in the motor housing and lower seal cavity must be checked when pump is serviced. If oil from the motor housing contains water
or other contaminations, both seals should be replaced during maintenance. Always replace with new factory-recommended oil and
service parts. All warranty repairs must be made by an authorized Zoeller
®
representative.
CONTROL PANELS
Nonautomatic pumps require a control panel. A motor starter circuit, control circuit, and alarm circuit within the panel are standard features.
Outdoor enclosures and alternating relays are often required. Variable level float switches are the most common level-sensing device. The
following should be noted:
(1) A pump having the seal failure sensor option requires interfacing terminals and alarm function incorporated into the panel.
(2) Three phase pumps require overload protection in panel. Use with an approved motor control that matches motor input in full load amperes
with overload element(s) selected or adjusted in accordance with control instructions.
PUMP WIRING INSTRUCTIONS
CAUTION
