15 Service & Adjustment
57
two threaded holes on the motor mounting plate. They will be on the horizontal center line, one on
each side of the input shaft. Insert one of the mounting bolts into each threaded hole so they push
against the drive motor ( you may have to rotate motor housing so the bolts can press against the
mounting lugs on the motor, making sure the bolts do not thread into the mounting lugs.) Turn both
bolts until they are hand tight, then turn each bolt 2 turn at a time, alternately until the motor if free
enough to remove by hand.
When installing the new motor, place the 3@ key on the shaft, lightly grease the surface of the motor
shaft, and insert in the hole on the high speed input shaft, keeping the keyway aligned with the key.
When the motor is in place, rotate it until the mounting lugs are aligned with the (4) mounting holes
on the motor mounting plate on the speed reducer. Insert a bolt in each hole and tighten.
Re attach the flexible power cable to the motor, connect the power leads to terminals marked L
1
and
L
2
, check to insure the motor is wired for the correct power (115 or 230) and for the correct rotation
(CCW). Refer to wiring connections on the motor nameplate for the correct connections.
When the motor is reattached and connected, turn on power and check operation. Place an ammeter
on the power line and check to insure the motor is drawing within the nameplate FLA.
REPLACEMENT OF SPEED REDUCER & FLEXIBLE COUPLING
Disconnect main power to the ice flaker. Refer to exhibit 30. Remove the drive motor as described
above, remove (4) mounting bolts attaching the gearbox to the top aluminum casting. The gearbox
can then be lifted straight up. The top part of the flexible coupling will lift off with the gearbox, the
bronze star and bottom part of the coupling will stay attached to the main shaft.
Loosen the set screw on the top part of the coupling to remove it from the gearbox. Care should be
taken to avoid oil from seeping out the relief vent (located on the top if the gearbox in a set screw) if
the gearbox is turned on its side or up side down. The bottom part of the flex coupling is attached to
the shaft with a set screw. Loosen the set screw then lift the coupling off the shaft. The use of a gear
puller may be required to assist in removing either part of the coupling.
Install the new (or existing, if it is not damaged) flex coupling to the shaft and speed reducer, lining
up the keyways with the key. Re-tighten the set screws in both parts. Place the bronze star on the
bottom part of the coupling. Install the gear box (with top coupling attached) onto the top casting,
over the bottom part of the flex coupling. If the gearbox does not sit on the top casting properly,
you may need to loosen one or both of the set screws on the flex coupling to allow the gearbox to seat
on the machined surface of the casting. There should also be a 1/16" gap between the top coupling
half and the bronze star. Rotate the gearbox COUNTERCLOCKWISE ONLY until the mounting
holes line up. Once aligned re-install the mounting bolts. Reposition coupling halves with required
clearance and re-tighten.
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