To Replace the Evaporator:
(Assuming all the steps for removal of the thrust
bearing, breaker, auger, and water seal have been
performed.)
1. Shut the hand valves in the liquid and suction
lines to the evaporator being serviced; then
discharge the refrigerant.
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
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.
REMOVAL AND REPLACEMENT: Evaporator
ICE SWEEP
BEARING
AUGER
EVAPORATOR
DRIP PAN
DIVDER/BREAKER
FM2402RH
August 1992
Page 24
