Scotsman NME954 - Manual (Page 28)

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:
·
At the thermostatic expansion
valve outlet.
·
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.
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.
NME954 & FME1204
May 2001
Page 28
Ice Sweep
Auger
Evaporator
Breaker/Divider
Bearing
Ice Chute
REMOVAL AND REPLACEMENT: Evaporator
CAUTION
Heat sink the TXV body when unsweating or
resweating the adjacent tubing.