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Idiomas disponibles
Idiomas disponibles
MOTORS
Single Phase: NEMA design L or M with class B insulation.
Suitable for operation in liquids with a maximum temperature
of 40°C (104°F).
Three Phase: NEMA design B with Class F insulation.
Suitable for operation in liquids with a maximum temperature
of 60°C (140°F).
Check rotation before installing pump in sump. Cutter should
rotate counterclockwise when viewed from the bottom (suc-
tion side) of pump. If not, reverse any two leads to motor to
reverse direction of rotation.
All Motors: See motor nameplate for voltage, Hertz, phase,
and full load current. Make sure that power supply is the cor-
rect voltage and adequate to start and run pump. To be sure
that wiring is correct, test run pump briefly before installing
in sump. Oil-filled seal plate will protect shaft seals for a
brief dry run which can save much troubleshooting time later
if there is a problem with the installation. See Table I, Page
2, for electrical data summary.
L1
L2
Start
Capacitor
Ground
(Green)
Black
Start
(Common)
Relay
White
2 1
(Main)
5
Red
(Start)
Black
White
Red
Run
Capacitor
Ground
(Green)
CONTROL BOX
Figure 6: Single Phase Electrical Connections with
sensors.
Single phase units
that are not installed
with Myers control
panels require a
capacitor/overload
package. Purchase
the package through
the Myers catalog.
Power
T1
Cable
(14-4)
Main
Winding
T4
T5
Start
Winding
T8
PUMP
P1
P2
Thermal
Sensor
Leak Sensor Probe
Power
Cable
230 VOLTS
L1
Black
L1
L2
White
L2
Red
L3
L3
P1
Ground
P2
Control
S
Cable
(16-4)
Black
P1
White
P2
Red
S
Green
Ground
Figure 7: Three Phase Sensor Circuit Electrical Connections; see Table I, Page 2 to determine
if your pump has thermal or leak sensors.
OPERATION
area can cause loss of fingers.
Lubrication: The motor bearings of oil filled models are
lubricated by oil in the motor. The motor bearings of air-filled
models are of the sealed type. The motor is equipped with
two independent shaft seals with an oil filled reservoir
between them for seal lubrication.
NOTICE: Failure to monitor the seal condition voids warran-
ty. Motors damaged by flooding due to seal or O-Ring failure
are not covered under warranty.
Grinder Assembly: The grinder unit consists of a cutter
rotating inside a stationary cutter ring. Persistent jamming
and clogging of the pump indicates dull or worn grinder
parts. If the cutter ring is dull, reverse it to renew the cutting
edges. If the cutter ring is worn from abrasives, replace it.
NOTICE: Normal domestic sewage will cause very little
dulling or wear of the grinder parts. However, pumping abra-
sives (such as fine sand) or fabrics (such as articles of
clothing) will greatly increase wear and tear on the grinder
and may make it necessary to replace the grinder assembly
frequently.
MAINTENANCE
The Key numbers given in these procedures refer to the
exploded views. See page 8.
Pump Removal:
1. After the basin cover is removed and the necessary dis-
charge piping disconnected, lift the pump from the
basin.
460 VOLTS
1
1
T1
&
T1
T7
L1
2
2
&
T8
L2
T2
T2
3
3
&
T9
T3
T3
L3
4
4
P1
P1
P1
5
5
P2
P2
P2
6
6
S
S
S
7
7
T4,T5,T6
T4 & T7
8
8
Not Used
T5 & T8
9
9
Not Used
T6 & T9
Terminal Board
6
Hazardous voltage and hazardous
cutter. Disconnect electrical power
and keep hands away from pump
inlet opening when working on or
handling pump for any reason. Do
not use automatic reset controls
with this pump. Accidental rotation
of the cutter with hands in the cutter
Hazardous voltage and hazardous
cutter. Before removing pump from
basin for service, always discon-
nect electrical power to pump and
control switch. Always keep hands
and other body parts away from
grinder assembly in pump suction.
T1
T1
T4
T4
T8
T7
T7
T9
T8
T6
T9
T6
T3
T3
T5
T6
P1
Thermal Sensor
P2
S
N
Leak Sensor Probe
O
T5
T2
N
C
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