Scotsman NME1854 - Manual (Page 29)

NME1854 & FME2404
January 2000
Page 29
To Replace the Evaporator:
(Assuming all the steps for removal of the thrust
bearing, breaker, auger, and water seal have been
performed.)
1. Recover the refrigerant from the ice machine.
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 (300 microns),
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.
To Reassemble the Evaporator and Auger
1. After the gear motor 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.
ICE SWEEP
AUGER
EVAPORATOR
BREAKER/DIVIDER
BEARING
ICE CHUTE
REMOVAL AND REPLACEMENT: Evaporator
FME Evaporator Shown, NME Similar