7.12 Disassembly and assembly
In the sectional assembly in this instruction, it should be noted that the motor adapter configuration var-
ies with the motor frame. The various fastening arrangements are shown. Refer to the bill of material and
sectional assembly certified for your order.
1.
Disassembly
a) Disconnect all electrical service. Mark leads for reassembly.
b) For 3x3-8 pumps fitted with 180TY and 210TY motors, remove bolts 371W. Loosening nut
357A should be sufficient to permit sliding bolt, nut and washer 528M out of slot. Pull casing
from motor fit.
For pumps other than those listed in 2(a), remove bolts 370R, nut 357 and washer 528L. Pull casing
from adapter fit. The adapter will be loose. Clamp or block the adapter so that it stays in the fit.
c)
Remove cap screw 370C, washer 528J and gasket 351 which secure impeller 101to motor
shaft. Impeller is keyed on shaft and should be removed by pulling.
d) For 3x3-8 pumps fitted with 180TY and 210TY motors, remove bolts 370R fastening motor
adapter 340 and motor flange. Separate motor from motor adapter fit.
For pumps other than those listed in 1.d, separate adapter from motor, being careful not to let
adapter hit seal on motor shaft.
NOTICE:
The motor shall be disassembled only by an authorized repair center. failure to comply will re-
sult in voiding of warranty.
For motor instructions see reliance electric manual B-3629.
2.
Assembly
Check the vent hole in the adapter 340 to be sure it is clear.
a) For 3x3-8 HSU pumps fitted with 180TY or 210TY motors, align the motor in the adapter 340 fit
and secure with bolts 370R and washers 528L and nuts 357.
For pumps other than mentioned in 2.a, clamp or block adapter 340 in position to motor flange. Be
careful not to damage seal on motor shaft.
b) Clean shaft and impeller bore, being sure they are free of burrs.
c)
Install key and impeller on the motor shaft. Be sure end of shaft bottoms in impeller bore. Install
gasket 351. Secure with washer 528J and cap screw 370C.
d) For 3x3-8 pumps fitted with 180TY and 210TY motors, guide 100 into fit of adapter and secure
with bolts 371W, washers 528M and nuts 357A.
For pumps other than those in 2.d, secure casing and adapter to motor with cap screw 370R, wash-
ers 528L and nuts 357.
e) When connecting electrical service, be sure polarity is correct to give clockwise rotation when
looking down on motor.
7.13 Spare parts
Ordering spare parts
To ensure against possible long and costly downtime periods, especially on critical services, it is advisa-
ble to have spare parts on hand.
Parts orders will be handled most promptly if the following directions are followed.
7.12 Disassembly and assembly
16
HSU Installation, Operation and Maintenance Instructions
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