PUMP INSTALLATION
1. Make sure that pump and motor are free to rotate by turning
theshaft by hand.
2. To prevent dropping pump, lower it by the drop pipe, not by
thecables. The electrical cables will not hold the pump weight.
3. Discharge outlet is 1-1/4” NPT threaded.
NOTICE: Pump discharge is left-hand thread into pump shell. If
installing external check valve, hold discharge with pipe wrench
to prevent loosening discharge in shell.
4. If pump is to be operated with an open discharge, a discharge
valvemust be installed. * Before startup, open this valve about 1/3
open.
2
Start pump. Slowly open valve until the desired flow rate is reached. Final
setting must be within pump’s recommended operating range.
OPERATION
1. The pump must be submerged at all times during normal
operation.
Do not run pump dry.
2. Make sure that the float switches are set so that the pump stops
before the pump runs dry or breaks suction. If necessary, adjust
float switches to achieve this.
3. The motor bearings are lubricated internally. No maintenance is
required or possible on the pump or the motor.
Table 1: Recommended Fusing Data
60 Hz/1 Phase 2-Wire Cable
Motor Winding Max Locked Fuse Size
Volts/Hz/ Resistance Load Rotor Standard
HP Phase Ohms Amps Amps Dual Element
1/2 115/60/1 1.0-1.3 7.8 21 20/15
1 230/60/1 2.2-2.7 9.8 48.7 25/12
Table 2: Power Supply Wire (Cable) Length in Feet
1 Phase, 2 Wire Cable, 60 Hz (Copper Wire Size – Service to motor)
1. Maximum wire lengths shown maintain motor voltage at 95% of 2. Sizes given are for copper wire. For aluminum wire go
service entrance voltage, running at maximum nameplate amperes. two sizes larger (i.e., if #12 copper wire, use #10 If service
entrance voltage will be at least motor nameplate voltage aluminum wire. under normal load conditions, 50% additional
length is permissible for all sizes.
Motor Insulation Resistance Readings
Normal Ohm/Megohm readings for all motors, between all leads and ground. Set ohmmeter to 100K scale.
Condition of Motor and Leads Ohm Value Megohm Value
New Motor , without power cable 20,000,000 20.0
Used motor, which can be reinstalled in tank 10,000,000 10.0
Motor in Tank – Readings are Power Cable plus Motor
New Motor 2,000,000 (or more) 2.0 Motor
in reasonably good condition 500,000 t0 2,000,000 0.5-2.0
Motor which may be damaged or have damaged power cable 20,000 to 500,000 0.02-0.5
Do not pull motor for these reasons
Motor definitely damaged or with damaged power cable 10,000 to 20,000 0.01-0.02
Pull motor and repair
Failed motor or power cable-Pull motor and repair Less than 10,000 0-0.1
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