The motor itself is attached by four nuts at the feet; remove. There likely is a
copper bonding wire attached to the back of the motor. Remove. Unplug the
pump cord from the control box.
Remove pump/motor assembly.
Preface: Although pumps can have different fittings, they basically are the same.
So the following is basically applicable for all pump/motors.
Disassemble Pump (wetend).
A. Remove 4 bolts holding the front of the pump (volute) to the pump
housing.
B. You will see the eyeseal on the nose of the impellor and the impellor.
You will want to disconnect the impellor from the motor shaft. The motor shaft
screws into the impellor. The designed method to disconnect is this: on the
opposite end of the pump/motor assembly, in the middle, is the motor shaft. It has
a slot. Take a large slotted screwdriver and while holding the impellor stationary
with one hand, turn the motor shaft with the other. If this doesn’t work, reverse;
turn the impellor with your hand while holding the motor shaft stationary. In worst
case situations, you can grab the motor shaft between the pump and motor with a
pair of vice grips and hand turn the impellor loose. If that doesn’t work, you will
have to use a wrench on the impellor to separate. This will likely damage the
impellor and it will need to be replaced.
C. Once the impellor is separated you need to disconnect the pump
bracket or body from the motor. It is held by 4 long bolts that run through the
motor and bolt to the pump. Disconnect each bolt but DO NOT pull the bolts out.
They also hold the motor together and removal will likely cause the motor to
disassemble.
D. If you are replacing the pump (wetend), reverse. If the motor shaft is
corroded, you need to remove the rust. The least abrasive method is best. Start
with steel wool, then try a wire brush or even sandpaper. You need to have a
clean motor shaft so the impellor can tighten cleanly against the seal and make
the seal work. If the motor shaft is highly corroded, the new impellor will not
tighten against the seal and the pump will leak.
E. If you are replacing the motor, you have to move the motor cord from
the old to new. The motor is 220-240vac. If it’s the 1JP or High Pressure pump
there is likely only one configuration for wiring. On the K-pump the motor can be
Summary of Contents for Z Builder Series
Page 43: ...balanced and not using too much or too little chemicals...
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