Vogt P-34AL-15, Service Manual

Page: 64 / 159

P34AL-15 & P34ALOF-15 Service Manual
ELECTRICAL CONTROLS
9/22/05
6-2
FIGURE 6-1
Control Panel (Door Opened)
(3CR) Compressor Motor
Starter contact and
holding relay Holding relay for safety and bin level control. Auxiliary contact
provides control power to the compressor motor starter.
Continuously energized during freezing and thawing.
(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. Provides overcurrent
and short circuit protection in addition to a disconnect.
(3M) Cutter Motor Starter Provides power to the cutter during the harvest period. Provides
overcurrent and short circuit protection in addition to a disconnect.
(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.
(1TR) Freeze Timer Controls the length of time the machine is in the freeze cycle.
When timed out initiates the harvest cycle.
(2PS) optional for
dedicated high side 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.
(TB) Terminal Block Numbered for multiple wire connections and ease of
troubleshooting.
TABLE 6-1
Description of Control Panel Parts (Inside)