Taylor C602, Service Manual

Page: 51 / 114

48 Systems, Controls and Operations
Model C602
Electrical System - L1 Power Path
Power Cord Plugged In / Power Switch
in the OFF Position
L1 power from the power cord connection travels
through the EMI filter to the 16 volt transformer. The
transformer supplies 16 vac to terminals A and B on
the left interface board and right interface board.
The interface boards supply 5 VDC to the Universal
Control, Personality Boards, Control Panel Interface
Board, and the motor speed control.
Power Switch in the ON Position
L1 power from the power cord connection is
supplied to terminal L1 on both interface boards. L1
must travel through the following switches to
activate the interface board:
Power switch, beater overload switch, compressor
high pressure limit switch, 15A fuse.
Power Switch On / Mode Select: WASH
With L1 power supplied to the L1 terminal on the
interface board, the power is then given to terminal
J6, pin 7 to supply power through the interlock relay
to the beater motor contactor coil.
Power Switch On / Mode Select: PUMP
With L1 power supplied to the L1 terminal on the
interface board, power is then given to terminal J6,
pin 5 to supply power to the air/mix pump overload
and then to the air/mix pump motor.
Power Switch On / Mode Select: AUTO
With L1 power supplied to the L1 terminal on the
interface board, power is then given to terminal J6
and directed through the following pins:
Shake Side
7 for the beater motor contactor coil (passes through
the beater interlock relay)
5 for the air/mix pump motor (10 seconds only)
4 for the glycol solenoid
2 for the glycol pump motor
1 for the compressor contactor coil.
Soft Serve Side
7 for the beater motor contactor coil (passes through
the beater interlock relay)
6 for the agitator motor
5 for the air/mix pump motor (30 seconds only)
4 for the glycol solenoid
3 for the Right Syrup Heater (Heater Mode ON)
2 for the Left Syrup Heater (Heater Mode ON)
1 for the compressor contactor coil.
Until the hopper thermistor probe is satisfied, the
glycol pump will operate on a timed cycle.
Power Switch On / Mode Select:
AUTO/Draw Initiated
With L1 power supplied to the L1 terminal on the
interface board, power is then given to terminal J6
and directed through the following pins:
Both interface boards
7 for the beater motor contactor coil (passes through
the beater interlock relay)
6 for the spinner motor (shake side only)
5 for the air/mix pump (The pump runs for 10
seconds after the the draw handle is closed – soft
serve only.)
1 for the compressor contactor coil. (Compressor
delay start based on COMP ON DELAY setting in
the Service Menu.)