Page 7 - Raritan Macerator Pump Owners Manual L552-0619

Maintenance: If pump is not used for long FIG 8
period, impeller may bind to the pump housing
causing overload. Impeller can be freed by
turning the motor shaft (FIG 8)
CAUTION: Turn off all power prior to removing
the plastic cap and rotating shaft with a screw
driver.
Note: Smart macerator control will jog the shaft FIG 9 CLOSE
every 7 days of non-use automatically preventing
binding.

Pump disassembly: TROUBLESHOOTING
Model 53101:
Close inlet waste valve by turning valve shutoff OPEN
socket clockwise (FIG 9). Remove two screws
(FIG 10). Slowly, pull waste water valve away
from the pump.

Model 53100:
Disconnect inlet hose.
All models:
Shutoff discharge valve if installed.
Remove clip (13) and remove fitting (10/11) .
Pump can be unbolted and removed for
disassembly to a convenient location.

Remove 4 cover screws (14). Remove housing FIG 10
(19 or 17)) and O-ring (3). Remove hex nut (16)
and cutter blades (9). It may be necessary to hold
the motor shaft steady. Insert a screwdriver into
slot on motor shaft (see slot access above), or slip
a thin wrench (9/32” [7mm]) behind blades onto
flat of motor shaft. Remove top wear plate (8),
gasket (7), impeller (5) and bottom wear plate (6).
Remove impeller housing (3) and shaft seal (4).

Pump reassembly:
Follow disassembly in reverse order.
Tip: Turn rubber impeller counter clockwise to
install in the housing.
REMOVE

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