Manitowoc SM Series, Installation, Operation And Maintenance Manual

20 

Part Number 000001590 Rev03 11/19

Operation 

Section 3

TESTING AND ADJUSTING THE BIN THERMOSTAT

The bin thermostat stops the ice machine when the bin 

is full. It is preset for normal ambient temperatures and 

adjustments are usually not required.
The thermostat is functioning correctly if, when three ice 

cubes are placed on the thermostat tube for 5 minutes, the 

ice machine stops. The ice machine should restart 5 minutes 

after the cubes are removed.
If the ice machine stops before the bin is full or runs after the 

bin is full, ambient temperatures are probably high or low 

and the bin thermostat can be adjusted as follows:

1.  To access the thermostat, remove the two screws 

attaching the front grill and remove the grill.

2.  Turn the thermostat to the left to decrease the level 

of ice before automatic shut-off. Turn to the right to 

increase the level of ice before automatic shut-off.

3.  Reassemble the plastic panel and grill.

Cube Weight Adjustment

The cube weight can be increased from the factory setting by 

adjusting the finish time.

ADDITIONAL FINISHING TIME CHECK:

Press and hold the power button for 5 seconds.

Count the flashes on the Automatic Ice Making light.

The light will flash once for each additional minute of freeze 

cycle time.

ADJUSTING FINISHING TIME

Adjust in 1 minute increments and allow the ice machine to 

run several freeze/harvest cycles, then inspect the ice cubes. 

If a heavier cube weight is desired add another minute of 

freeze time and repeat the process.

1.  Press and hold the power button.
2.  Press and release the clean button once for each 

additional minute of freeze cycle time desired.

3.  Five minutes is the maximum additional freeze time that 

can be added. Pressing the clean button 6 times will 

reset the finishing time to zero additional minutes.

Cube weight increases or decreases depending on the 

amount of dimple in the cube