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MECHANICAL SERVICE (Cont.d)
Pump Seal Replacement
1.
Disconnect the power to the machine at the main breaker panel or fuse box.
2.
Drain the machine.
3.
Remove the guage bracket on the front of machine.
4.
Remove drain plug on the pump volute and drain the pump.
5.
Remove the pump hoses.
6.
Pull the pump/motor assembly forward out of the slip bracket in the machine base.
7.
Disconnect the wires to the motor at the motor junction box.
8.
Remove screws on volute and carefully remove from the pump flange.
9.
Lock the motor shaft. The back of motor shaft has a screwdriver slot.
10.
Turn the impeller clockwise to remove from shaft. (Shaft has left-hand threads)
11.
Remove the spacer and save for reassembly.
12.
Remove the old seal and discard.
13.
Check seal seat in the pump flange and clean thoroughly.
14.
Press rubber seal/ceramic portion of seal assembly into the pump flange.
Use a water soluble lubricant. Be careful to keep the ceramic clean.
15.
Install the rotating part of the seal on the shaft with the graphite surface toward the
ceramic. Use a water soluble lubricant.
16.
Reinstall spacer, impeller, and new flange gasket. Reinstall screws.
17.
Reinstall the pump/motor assembly and reconnect the pump hoses.
18.
Test run and check for leaks.
Figure 8
Pump Seal Replacement
22
BASIC SERVICE
3/4 HP Motor
Note: Pump flange is
not a service
replacement part
Pump Flange
Seal Assy.
Impeller
Gasket
Volute
Drain Plug
Screw
Spacer
Summary of Contents for U-H1
Page 6: ...4 NOTES NOTES ...
Page 58: ...56 REPLACEMENT PARTS Figure 25 Dishracks Strainer PRV 1 2 3 4 ...
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