Service manual
Table Of Contents
- Table of Contents
- Product Description: Page 2
- Cabinet Dimensions Page 3
- Location Recommendations: Page 4
- Familiarization Page 5
- Decorating Features: Page 6
- Door Panel Attachment Page 7
- Door Swing Page 8
- Plumbing - Pump Model Page 9
- Plumbing: Gravity Drain Model Page 10
- Electrical and Start Up Page 11
- Use Page 12
- Maintenance Page 13
- How to remove scale from the ice making system. Page 14
- Service Table of Contents
- SCN60 service Page 1
- Components: Page 2
- Evaporator and Auger Page 3
- Control System Page 4
- Water System Page 5
- Storage Page 6
- Performance and Technical Specs Page 7
- Electrical Sequence Page 8
- Service Diagnosis Page 9
- Service Diagnosis Page 10
- Component Diagnostics Page 11
- Ice Capacity Page 12
- Removal and Replacement Page 13
- SCN60 Gearbox Access & Removal Page 14
- Water Seal Replacement Page 16
- Evaporator Replacement Page 18
- Drain Pump (if equipped) Page 19
- Compressor replacement. Page 20
- Bin and Cabinet Page 21
- Table of Contents
Control System
The control system operates the machine. The
controller operates on 12 volts AC, supplied by the
transformer. It uses an ultrasonic ice sensor to
measure ice level. The ultrasonic system transmits
sound waves into the ice storage bin and measures
the return time, when the return time is longer than
the preset time for bin full, the controller switches
the ice machine to an ice making mode. During ice
making the compressor, fan motor and auger motor
are operating.
The control system has two safeties: It will not
operate the machine without water and it will not
operate the machine if the auger motor is drawing
too much current or if it isn’t drawing any current.
The water sensor is checking the conductivity of
the water in the water reservoir. If there is no water
in the reservoir the conductivity will be zero and the
controller will either not start ice making or will stop
making ice.
The current or amps of the auger motor are
continually monitored by the controller during ice
making. If the current is too high, indicating an
overload, the controller will stop ice making. If the
current is zero, indicating an auger motor failure,
the controller will also stop ice making.
The control pad has two switches and three lights.
The left switch button is On/Off. The right switch
button is Clean/Reset. The left Ice Making light is a
status light, it is ON when the machine has been
switched to an ice making mode. The center light is
a Water light, it will be ON when the controller has
sensed that there is no water available. It will go
out when the water supply has been restored. The
right light is a Time to Clean indicator light. It is
switched ON by the controller after six months of
power connect time. It will go out after the machine
has been cleaned following the process in the
Maintenance section.
May 2011
Page 4
SCN60
Service
Control Panel
On/Off Control Button
Clean Button
Glows Green when
unit is switched On
Glows Yellow when
it's time to clean the
machine
Glows Red when there is no water
supplied to the machine
The machine will NOT make ice
when this light is on. It will restart
and the light will go out when the
water supply is restored.