Scotsman AF300 User Manual page 24

AF300
Removal and Replacement
Evaporator:
The evaporator may be removed from the ice
machine without removing the ice machine from its
installed position. The evaporator should only
need to be replaced if there is a refrigerant leak in
the jacket or it has become worn or pitted internally.
1. Remove the hood, door and ice storage bin..
2. Remove the evaporator and reservoir cover
plate.
3. Unscrew the bolts holding the gearmotor
mounting plate to the ice machine chassis.
4. Pull the gearmotor forward enough to gain
access to the cap screw in the back.
1
5. Use a " box wrench to unscrew the three cap
2
screws holding the evaporator to the gearmotor.
6. Shut off water supply.
7. Drain the reservoir and evaporator.
8. Pull water inlet tube off evaporator water inlet.
9. Remove the refrigerant from the unit. Reclaim,
recover or recycle the refrigerant, do not discharge
into the air.
10. Unsweat or cut the liquid and suction line
tubes to the evaporator at the joints to the left of
the evaporator.
11. Raise the evaporator assembly up enough that
the output shaft clears the freezer adaptor, and
remove the evaporator from the ice machine.
Electrical shock hazard.
Electrical shock can
cause personal injury.
Disconnect power before
beginning to service
components.
January 1993
12. After the evaporator has been removed from
the ice machine, the auger and bearings may be
removed. The fasteners, auger, breaker cover, and
insulation halves should be saved for use in the
new evaporator. New bearings and a water seal
will be required when replacing an evaporator.
13. To replace with a new evaporator, install the
bearings, water seal and auger in the new
evaporator before installing in the chassis. Check
the coupling, replace if worn. If the water seal has
been leaking, check the interior of the gearmotor
for water.
Reverse the above steps to replace, braze the two
refrigerant joints together, check for leaks. Replace
the dryer, evacuate and weigh in the nameplate
charge.
EVAPORATOR ASSEMBLY
INSULATION
BREAKER
COVER
RETAINING
SCREWS
EVAPORATOR
BOTTOM OF
WATER SEAL
BOTTOM
BEARING
ADAPTER
Page 24
SNAP RING
BEARING CAP
CAP SCREW
WASHER
TOP BEARING
BREAKER
AUGER
TOP OF
WATER
SEAL
COUPLING