VOGT ICE TUBE-ICE P-24A, Service Manual

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P24A & P34A Service Manual
ELECTRICAL CONTROLS
12/17/12
6-2
FIGURE 6-1
Control Panel (Door Opened)
(1M) Not shown Compressor Motor
Starter Provides power to the compressor motor. Continuously energized
during freezing and thawing with auxiliary hold contact and
auxiliary contact to de-energize the compressor crankcase heater
when the motor is running.
(2M) Pump Motor Starter Provides power to the circulating water pump during the freezer
period or when the Hand/Auto switch is in the “Hand” position to
circulate water or ice machine cleaner, etc.
(3M) Cutter Motor Starter Provides power to the cutter during the harvest period.
(1CR) Control Relay With
Pneumatic Timer For making and breaking various circuits during freezing and
thawing period with pneumatic timer to delay the actual thawing
process. Energized during thawing.
(2CR) Control Relay For making and breaking circuits during freezing and thawing.
Energized during freezing, thawing, and hand. Momentarily de-
energized at the end of the harvest.
(2TR) Thawing Timer Controls the time of the harvest (thawing) period.
Energized during the harvest period.
(DT) Delay Timer Allows the compressor to start unloaded by delaying the energizing
of the “UR-SOL” (unloader solenoid) valve. This gives lower in
rush amps and helps prevent belt slippage at start-up.
(2PS) Freezer Pressure Switch Controls the desired ice thickness (hole size) by sensing the freezer
suction pressure and initiating the harvest period.
(ET) Elapsed Time Indicator Indicates total hours of machine operation. Is powered when the
compressor is running.
(CB4) Circuit Breaker Overload and short circuit protection for crankcase heater and the
control circuit.
(CB2) Circuit Breaker Secondary protection for the circulating water pump motor.
(CB3) Circuit Breaker Secondary short circuit protection for the cutter motor.
(TB) Terminal Block Numbered for multiple wire connections and ease of
troubleshooting.
TABLE 6-1
Description of Control Panel Parts (Inside)