Vogt P18AL TUBE-ICE, Service Manual

Page: 46 / 88

P18AL Service Manual
ELECTRICAL CONTROLS
3/6/07
6-4
Symbol Component Description
1CR
Relay for making and breaking various circuits during freezing and thawing.
Energized during the thaw period.
2CR
Relay for making and breaking various circuits during freezing and thawing.
Energized during all operational modes.
3CR
Relay stops the machine when there is a power failure or interruption and must be
manually re-energized by hitting the start button.
CB1
Overload and short circuit protection for the crankcase heater and the control
circuit.
CU
Stops cutter motor in the event of a mechanical or electrical failure that results in
excessive motor amperes.
ET Indicates hours of machine operation. Energized when compressor is operating.
P
Stops pump motor in the event of a mechanical or electrical failure, which results
in excessive motor amperes.
PB1 Used to stop machine immediately (Should be used for emergency stopping only).
PB2
Used for starting machine or manually harvesting. Will initiate a harvest cycle
whenever pushed with the “Clean/Off/Ice” selector switch in the “Ice” position
and machine operating in a freeze cycle.
SS
Used to select operating mode of machine. When in clean position, only the water
pump will run. This allows cleaner to be circulated through the freezer without
making ice. In the off position, the machine will shut down after the completion of
a freeze and harvest period. In the ice position, machine will cycle on and off based
on a control signal (i.e. bin thermostat or timer) or run continuously until manually
stopped by setting the switch to the “Off” position.
T Controls the duration of the thawing period.
T2 Control the duration of the freeze period.
T3
Controls the duration of conveyor operation.
T4
Controls the duration of the flush valve operation.
TB Numbered for multiple wire connections and ease of troubleshooting.
TABLE 6-3
Description of Control Panel Component Function