14
Systems and Controls
Model 430
Features
Mix Low / Mix Out
The Taylor Model 430 torque control is equipped with
the mix low/mix out function. When the mix supply is
low, the sensor activates the “MIX LOW” light to
indicate a need for mix replenishment.
When a mix out condition is detected, the sensor
activates the “MIX OUT” light. The beater motor and
compressor are disabled at the completion of the draw.
Once the mix supply has been replenished, there is a
30 second delay before the refrigeration system
continues.
Protection Fuse
There is an external fuse located on the control board.
(See illustration on page 13.) Although it appears to be
soldered to the board, it is actually plugged into two
small sockets on the board. The fuse protects the
transformer from damage in the event that the
secondary side of the board becomes shorted. When
the fuse is open (blown), all board functions are
interrupted. The fuse must then be replaced.
Lockout (Optional)
The unit is equipped with an optional lockout mode.
This is a selectable lockout for either 1−day or 4−days.
The lockout mode requires that the unit be taken apart
and cleaned every 1 or 4 days, depending on the
lockout selection. (Taylor recommends, and most local
health code laws demand, daily cleaning.)
If the unit is not taken apart and cleaned within the
allotted time frame, the control will enter the lockout
mode. The beater motor and the compressor are then
disabled.
The 1−day lockout is enabled by placing a jumper on
J2−3&4. The lockout light starts flashing four hours
prior to lockout. The lockout light illuminates
continuously when the unit is locked out.
The 4−day lockout light starts flashing four hours prior
to lockout. The lockout light illuminates continuously
when the unit is locked out.
The lockout mode works by use of a magnet. The
magnet has been placed in the upper right hand corner
of the freezer door. Behind the front panel of the
freezer, there is a reed switch. (Door switch on the wire
diagram.) When the freezer door is in place on the
freezer, the magnet holds the reed switch open,
signaling the control that the door is in place. When the
freezer door is removed, the reed switch closes,
signaling the control that the door is not in place. The
control must sense that the reed switch is closed for at
least five minutes and that the power switch is in the
“OFF” position before the lockout is cleared and the
timer is reset.
Ready Light (Optional)
When the control determines that the product is at a
servable viscosity, the “READY” light on the front panel
illuminates. Servable viscosity is determined in the
following manner.
When the control switch is first placed in the “AUTO”
position, the product must freeze down to the viscosity
set point (until the torque switch is satisfied). Once the
torque switch is satisfied, the “READY” light will
illuminate. During normal draw patterns, the control
monitors how long the draw valve is open to estimate
the amount of product drawn, and the control monitors
how long the compressor has run to estimate the
amount of cooling that has taken place. Within the
software a “Reference Value” has been established to
determine the status of the “READY” light.
Drawing product raises the reference value,
compressor operation lowers it. When the reference
value drops to the pre-determined value, the ready
light illuminates.
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