7
TECHNICAL INFORMATION
4. UNIT CONTROL
(1) GENERAL OPERATION
a. Normal operation
When the power supply is turned on, one of the lamps on the operation panel lights up and
the compressor, condenser fan motor and agitator motor start.
• When the ice making sensor (long electrode) detects sufficient ice storage, the compressor
and condenser fan motor stop.
• When the ice making sensor (short electrode) detects insufficient ice storage, the
compressor and condenser fan motor restart.
• Repeat the above operations until the power supply is turned off.
• The condenser fan motor runs intermittently at low ambient temperatures (see “c.
Condenser fan motor low temperature control” for details).
[Timing chart]
2) Insufficient ice storage, short
electrode end exposed to water
No ice
Power supply (220-240V AC)
Controller board
(Compressor, condenser fan motor)
Agitator motor
Ice storage
and electrode
Power on
1) Sufficient ice storage, long
electrode covered with ice
Long electrode
Short electrode
Electrode (front)
Ice Cooling water
Ice
Cooling water
1) Sufficient ice storage,
long electrode covered
with ice
2) Insufficient ice storage,
short electrode end
exposed to water
Repeat 1) and 2)
Ice storage and electrode
