SERVICE

General

Hazardous voltage and risk of cord damage.

Can shock, burn, or kill. Before removing the pump from

the basin for service, always disconnect electrical power to

the pump and the control switch. Do not lift the pump by the

power cord. See the “Cord Lift Warning” below.

After removing the basin cover and the necessary discharge

piping, lift the pump out of the basin.

Place the pump in an area where it can be cleaned

thoroughly. Remove all scale and deposits on the pump.

Submerge the complete pump in a disinfectant solution

(chlorox or chlorine bleach) for at least one hour before

disassembling the pump.

The pump motor housing contains a special lubricating oil

which should be kept clean and free of water at all times.

NOTICE: Whenever the motor housing is being removed for

service, remove oil and replace it with new oil at reassembly.

Use only oil listed in parts list in this manual. When filling with

new oil, DO NOT overfill. Allow about 7/8" (22mm) air space

from top of boss in housing for expansion of oil when the

pump is operating.

Pump Disassembly

Impeller and Seal Replacement

A. Impeller removal (See the pump disassembly drawing,

Page 4):

1. Remove the oil fill plug and turn the pump upside down

to drain oil.

2. Remove the capscrews holding the upper motor

housing to the lower motor housing; lift off the upper

motor housing and remove the motor lead wires from

the connector to detach upper housing from assembly.

The lead wires are fitted with quick connect terminals

for this purpose.

3. Remove the capscrews holding the lower motor

housing to the volute; lift off the lower motor housing.

4. Hold the rotor shaft assembly and unscrew the impeller

by turning it counter-clockwise. Remove impeller and

clean it.

If no more service is needed, reverse instructions above

to reassemble the pump. Reattach the motor lead wires

as shown in Figure 1, fill with clean dielectric oil (Part

No. U197-8A), check the oil level and replace fill plug.

Oil should cover the motor windings. Allow room for

expansion.

Short Divider

Either Black Wire

Either Black Wire

Green Wire

View

A-A

(connected between

the two tallest

dividers)

409 0893

Figure 1

B. Shaft seal replacement:

1. Follow the instructions to remove the impeller, above.

2. Remove the stator capscrews and the spacers (if

applicable). Lift off the stator.

3. Remove the seal’s ceramic seat from the shaft and tap

the body of the seal out of the lower motor housing.

4. Clean the seal cavity thoroughly before installing the

new seal.

NOTICE: Make sure that the seal faces are

clean; do not scratch or damage the new seal face

during seal replacement. Apply Permatex #2 or an

equivalent sparingly to the outside edge of seal body

before installing the seal in the lower motor housing.

5. Press the new seal body into position in the lower

housing cavity.

6. Press the ceramic seat onto the motor shaft. The

impeller will pull it into position.

7. Reassemble the stator and tighten the stator capscrews.

8. Reassemble the impeller and the pump (reverse

instructions 1 through 4 in section A).

9. Reattach the motor lead wires as shown in Figure 1.

10. Fill with clean dielectric oil (Part No. U197-8A), check

the oil level and replace the oil fill plug.

3

1. Attempting to lift or support pump by power cord

can damage cord and cord connections.

2. Cord may pull apart, exposing bare wires with

possibility of fire or electrical shock.

3. Lifting or supporting pump by power cord will

void warranty.

4. Use lifting ring or handle on top of pump for

all lifting/lowering of pump. Disconnect power

to pump before doing any work on pump or

attempting to remove pump from sump.

Risk of electrical shock.

Can burn or kill.

Do not lift pump by

power cord.

CORD LIFT WARNING