Evaporator - Scotsman NM952 Service Manual

REMOVAL AND REPLACEMENT: Evaporator
To Replace the Evaporator:
(Assuming all the steps for removal of the thrust
bearing, breaker, auger, and water seal have been
performed.)
1. Discharge the refrigerant from the ice maker.
2. Unsweat the refrigerant connections:
a) At the thermostatic expansion valve outlet.
///////////////////CAUTION/////////////////////
Heat sink the TXV body when
unsweating or resweating the
adjacent tubing.
////////////////////////////////////////////////////////
b) At the suction line at the joint
about 3" from the evaporator.
3. Remove the evaporator.
4. Unsweat the drier from the liquid
line.
5. After installing a new water seal
in the new evaporator (see "To
Replace the Water Seal") sweat in
the new evaporator at the old tubing
connections.
6. Install an new drier in the liquid
line.
7. Evacuate the system until
dehydrated, then weigh in the
nameplate charge. Check for leaks.
8. Install auger, breaker, breaker
bearing assembly, and ice
discharge chute in reverse order of
disassembly.
Electrical shock hazard.
Electrical shock can cause
personal injury.
Disconnect power before
beginning to service
components.
ICE CHUTE
BREAKER/DIVIDER
August 1993
To Reassemble the Evaporator and Auger
1. After the gearmotor has been inspected, fasten
the evaporator to the gear motor. Torque the bolts
to 110 inch pounds.
2. Lower the auger into the evaporator barrel,
slightly turning it to match up with the drive end.
Do Not Drop Into the Evaporator.
3. Complete the reassembly by reversing the
disassembly for the breaker & thrust bearing
assembly.
BEARING
Page 27
NM952
ICE SWEEP
AUGER

EVAPORATOR