9
GENERAL MAINTENANCE AND REPAIRS
Pump Disassembly:
A.
Remove motor screw’s (212) or (219).
B.
Remove the casing (1) from motor.
C.
Unscrew impeller screw (26) counterclockwise from
motor shaft. It may be necessary to block the impeller
to keep it from turning while removing this screw.
D.
Remove the impeller (2) and shim (294) from motor
shaft.
B.
Inspect and clean all parts. Replace any defective
parts.
Reassembly:
A.
Clean motor shaft and bore of impeller hub with
emery cloth. Apply a drop of Loctite #601 to motor
shaft and spread on shaft.
Seat shim (294) and impeller (2) onto motor shaft.
DO
NOT
drive impeller onto motor shaft as this action may
damage motor seals. If fi t of impeller onto shaft is tight, it
may be necessary to heat the impeller in an oven to 200
0
F
to 250
0
F before assembly.
B.
Replace impeller washer (24) and screw (26). Draw
the impeller screw tight against the impeller washer.
Block the impeller to keep it from turning. Replace
gasket (73) on casing.
C.
Place motor on casing (1).
D.
Measure the clearance between casing (1) and
impeller (2) at suction eye. Use a set of feeler
gauges. If the clearance is more than .060, place
shims on motor shaft behind impeller. Clearance
should be between 0.13 and .060. If required, add or
remove shims to obtain proper clearance (av. .030).
E.
Insert motor screws (212) and tighten down after
proper impeller clearance has been established.
Motor Repair:
Should it become necessary to replace seals or bearings
or make repairs to the motor, please contact the nearest
offi ce of Reliance Electric Company for address of
Authorized Service Station in your area. See Motor
Warranty.
Motor Warranty:
The submersible type motor, furnished with this pump, is
warranted for a period of one year from date of installation
or 18 months from the date code on the motor, whichever
occurs fi rst.
The above warranty is in effect provided the Moisture
Detection Relays and Thermal Protection System are
properly connected and operable. Failure to utilize the
Moisture Detection System may void the warranty.
LOCATING TROUBLE
1. No Water Delivered.
a. Discharge head too high.
b. Impeller completely plugged.
c. Wrong direction of rotation.
2. Not Enough Water Delivered.
a. Impeller partially plugged.
b. Wrong direction of rotation.
c. Mechanical
defects.
1. Impeller or casing worn or damaged.
2. Improper impeller adjustment.
d. Impeller diameter too small.
3. Not Enough Pressure.
a. Discharge head lower than expected.
1. Impeller or casing worn.
2. Improper impeller adjustment.
b. Air in water.
c. Mechanical
defects.
d. Impeller diameter too small.
e. Wrong direction of rotation.
4. Pump takes too much Power.
a. Head lower than rating.
b. Liquid either viscous or heavier than water or
both.
c. Impeller binds in casing.
