Evaporator - Scotsman FM2402 Service Manual

FM2402
REMOVAL AND REPLACEMENT: Evaporator
WARNING
Disconnect electrical power before beginning removal procedures.
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. See "To Reassemble
Evaporator and Auger"
To Reassemble the Evaporator and Auger
1. After the gearmotor has been inspected, fasten
the evaporator to the gear motor, be sure that the
number of shims indicated on the gear case cover
is in place between the gearcase cover and the
drip pan gasket. 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.
ICE CHUTE
BREAKER/DIVIDER
August 1993
Page 28
ICE SWEEP
BEARING
AUGER
EVAPORATOR