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®
Co. All rights reserved.
Installation and checking of electrical circuits and hardware should 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.
CAUTION
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 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 CABLE
The sensor cable is the smaller cable, which contains 5 wires. The red and orange wires connect to the thermal cut-out circuit and the black and
white wires connect to the seal leak probes. The green wire is a ground connection. All 5 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 when the red and orange wires are connected in series to the control coil of the motor starter circuit. The pump is
able to restart once the motor cools down. Continued deactivation of this circuit requires the attention from maintenance personnel.
(2) The black and white seal leak 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 sensor cord black and
white 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 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, then a problem exists with the sensor circuit wiring or cordage. If resistance readings show a problem with either test,
then pump should be repaired by a Zoeller Authorized Service Station.
CONTROL PANELS
These pumps are nonautomatic and they require a control panel. 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. Variable level float switches are the
most common level sensing device. The following should be noted.
(1) Single phase units require externally mounted capacitors and starting relays. Your control panel should have provisions for mounting
these starting components.
(2) The seal failure sensor and thermal sensor protection require that interfacing terminals and functions be incorporated into the panel.
(3) All 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.
(4) Lightning arrestors, condensation heaters and elapsed-time meters are optional features that provide added protection.
PUMP WIRING INSTRUCTIONS
SEAL FAILURE
BLACK & WHITE
LEAD
GROUND
POWER
CORD
LEAD
SENSOR CORD
GREEN GROUND
BLACK
GREEN
RED
WHITE
SENSOR
LEADS
TEMPERATURE
RED & ORANGE
SENSOR
LEADS
POWER AND SENSOR CORD, LEAD IDENTIFICATION
ZEPA0039E
“71 SERIES GRINDER” FOUR CONDUCTOR AWG. POWER CORD SIZE
MODEL
HP
230/1 PH 200/3 PH 230/3 PH
460/3 PH
575/3
PH
7110
3
8 AWG.
12 AWG.
12 AWG.
12 AWG.
12 AWG.
7111
5
8 AWG.
8 AWG.
12 AWG.
12 AWG.
12 AWG.
7112
7.5
N/A
8 AWG.
8 AWG.
12 AWG.
12 AWG.
APPROXIMATE CORD DIAMETER PER GAUGE
12/4 AWG.
.68"
8/4 AWG.
.96"
NOTE: SENSOR CORD 18/5 AWG. APPROXIMATELY .48" DIAMETER.
