Removal And Replacement - Gearmotor Assembly - Scotsman AFE424A-1 Service Manual

AFE424

Removal And Replacement - Gearmotor Assembly

Rebuilding The Gearmotor Assembly
Drive Motor Parts:
To replace the centrifugal switch and mechanism
or the motor winding or the motor rotor, removal of
the gearbox assembly is not necessary.
1. Disconnect electrical power.
2. Remove the cover from the top of the centrifugal
switch assembly and remove the electric wires
from the microswitch. To replace just the
centrifugal switch, remove two machine screws
retaining the switch, and remove the switch. To
replace, reverse the procedure to this point.
3. If the motor is to be removed, the next step is to
remove the four screws holding down the plastic
switch assembly housing and lift the housing off of
the motor top.
4. Remove the centrifugal switch mechanism from
the rotor by unscrewing the machine screw at the
top of the rotor.
5. The motor and housing may now be removed.
Lift off the motor fan housing, and pull off the
plastic fan. The next part to be removed is the
motor winding. Disconnect the electrical leads of
the motor from its control box location and lift off
the winding.
6. The rotor is all that remains of the motor in the
gear motor assembly. Use a pry bar to carefully pry
up the rotor. (The only thing holding it in is the tight
fit of the bottom rotor bearing into the top of the
gear case.) To replace any of the above parts,
reverse the disassembly procedure.
Electrical shock
hazard.
Electrical shock can
cause personal injury.
Disconnect power before
beginning to service
Removal of the Gearmotor Assembly
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. Use a " box wrench to unscrew the three cap
1
2
screws holding the evaporator to the gearmotor.
5. Remove the motor and centrifugal switch
electrical leads from their connections.
6. Raise the evaporator assembly up enough that
the output shaft clears the freezer adaptor.
7. Remove the gearmotor assembly from the ice
machine.
Gearcase Service
After removal of the gear motor from the unit,
inspect the internal parts from this gearmotor.
1. Place the gearbox on a flat surface, covered
with rags to absorb any spilled lubricant.
2. Using a punch, drive the roll pins out of the
casing.
3. Remove the four cap screws on the top of the
gearcase and the two under the motor.
4. Pry the two cases apart.
When inspecting the internal parts, look for:
·
Condition and quantity of lubricant. The proper
oil level is near the top of the output (biggest)
gear. This takes 5 oz. Use Scotsman oil, part
number A32379-027.
·
Bearing condition
·
Gear and Shaft condition
·
Woodruff key between output gear and shaft.
·
Grease seals, back to back.
·
Vent hole
Be sure to count and retain the spacer washers as
they come out of the gearbox.
Replace the parts as required, using the part
numbers found in the parts section of this manual.
Replace the gears into a CLEAN bottom gearcase,
after adding some grease to the bearings. Replace
the spacers in the same quantity as they were
removed. If no count was kept, use the numbers
found in the parts list.
April 2010
Page 20