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© Copyright 2020 Zoeller
®
Co. All rights reserved.
Repair and service must be performed by a firm approved
by Zoeller Company to repair a pump with an explosion-proof motor in
accordance to the guidelines listed in Policy # FM0212-3d. Contact the
Zoeller Product Support Department for additional information.
If the motor housing or cord cap is disassembled or repaired
by a firm NOT approved to work on explosion-proof motors, the explosion proof
rating is void, and the cCSAus tag MUST BE REMOVED FROM THE PUMP.
SAFETY PROCEDURES
For your protection, always disconnect pump
and panel from its power source before handling.
Never enter the basin until it has been properly
vented and tested. Any person entering a basin should be wearing
a harness with safety rope extending to the surface so that they can
be pulled out in case of asphyxiation. Sewage water gives off methane
and hydrogen sulfide gases, both of which can be highly poisonous.
Installation and checking of electrical circuits and hardware should be
performed by a qualified electrician.
Pump is never to be lifted by power cord.
Unit must be cleaned and disinfected, inside the pumping
chamber and all exterior surfaces, prior to servicing.
GENERAL MAINTENANCE
GENERAL SYSTEM INSPECTION
Before the system is placed into operation, it should be inspected
by a qualified technician.
Wiring and grounding must be in accordance
with the National Electrical Code and all applicable local codes
and ordinances.
LUBRICATION PROCEDURES
No lubrication is required.
If pumps are to be stored for more than six months, refer to short term
storage procedure in the Operation section.
PREVENTIVE MAINTENANCE
Preventive maintenance is recommended to ensure a long service
life from the product. Provided is a suggested maintenance schedule.
Every six months:
• Inspect and test system for proper operation.
• Check for proper and unobstructed float operation.
• Listen for proper check valve operation.
Every 5 years or 10,000 hours of operation:
• Remove pump, inspect and service using a Zoeller rebuild kit.
• Flush and clean basin.
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 rota-
tion 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 observing 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.
SENSOR WIRES (See pages 8 and 9)
The power and sensor wires are contained in the same cord. The green wire is a ground connection. All wires must terminate in the control panel.
The following should be noted:
(1) The thermal sensors are normally closed and mounted adjacent to the motor windings. If internal temperatures exceed a maximum limit,
the pump will deactivate. On 3 phase models connect the white and red wires with the black tracer to the control panel's thermal cut-out
terminals. The pump is able to restart once the motor cools down. Continued deactivation of this circuit requires the attention from mainte-
nance personnel.
(2) The seal failure wires are connected to a 330K ohm moisture detection circuit. An indicator light will activate whenever water is present in
the shaft seal cavity or cord cap assembly. Whenever the seal leak light is activated, indicating the entry of moisture into the pump, it should
be removed and serviced in order to avoid damage to the motor. 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 moisture sensor wires. The VOM should
read approximately 330k Ohms. Resistance readings significantly lower indicates an entry of moisture into the pump. If VOM reading is
open then a problem exists with moisture detection circuit.
(3) The green wire shall be connected to a ground lug in the panel. Check resistance between the green ground conductor and all other wires.
This resistance reading should indicate an open circuit. If VOM reading returns a reading other than open, then a problem exists with the
sensor circuit wiring or cordage and the pump should be taken to an approved repair station.
CONTROL PANELS
These pumps are nonautomatic and they require a control panel with intrinsically safe float and moisture sensor circuits. A motor starter circuit,
control circuit, and high-water alarm circuit within the panel are standard features. Enclosures rated for outdoor use and alternating relays are
often required. The following should be noted.
(1) The seal failure sensor and thermal sensor (3 phase only) protection require that interfacing terminals and functions be incorporated into
the panel.
(2) All 3 phase pumps require overload protection in panel. Use with approved motor control that matches motor input in full load amperes with
overload element(s) selected or adjusted in accordance with control instructions.
(3) Lightning arrestors, condensation heaters and elapsed-time meters are optional features that provide added protection.
INSTRUCTIONS FOR CHECKING ROTATION OF THREE PHASE UNITS
