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Ice Machine Operation Section 3
3-2
Ice Thickness Adjustment
QM-20 dice ice cube formation is slightly different
from our previous models. Manitowoc ice
machines have a unique cube shape. It is normal to
have a dimple in the ice cube (a concave indentation
in the cube). Ice cubes from the QM-20 may appear
to have a slightly larger dimple than other
Manitowoc dice cube machines. Therefore, cube
size for the QM-20 is determined by measuring the
slab weight (the combined weight of all cubes from
one harvest cycle). To determine proper slab
weight follow the instructions listed below.
Correct Ice Bridge Thickness
1. Ensure the air filter, front, and back panels are
installed properly and close the bin door.
2. During the third harvest cycle open the bin door
and catch the entire slab of ice.
3. Weigh the ice slab. The combined weight of all
cubes from one harvest should weigh between
200 - 270g (7 - 9-oz). If the slab weight is
within this range, the ice machine is working
properly and no further action is needed. If the
slab weight is not within this range or you desire
a slightly thicker or thinner cube, continue to
step four.
WARNING
Do not touch electrical wires. Disconnect power to
the ice machine before making any ice thickness
adjustments.
4. Remove the air filter.
5. Remove the two screws holding the front panel
in place and remove the front cover.
6. Locate the ice thickness control dial on the
control board (see below). Turn the dial
clockwise for a thicker cube or counter
clockwise for a thinner cube.
Ice Thickness Adjustment Dial
7. Assure all of the panels and air filter are
reinstalled properly and the bin door is closed.
Repeat steps one through three.
After completing the procedure above, if you are
unable to obtain a sheet of ice weighing 200 - 270g
(7 - 9-oz) contact the Manitowoc Service
Department for further assistance.
sv1710
ICE THICKNESS
ADJUSTMENT DIAL
DIAL IS FACTORY
SET TO ZERO
ICE BRIDGE SHOULD BE 1.5 MM
TO 3.2 MM THICKNESS
A DIMPLE IN EACH
CUBE CELL IS
NORMAL