Taylor 337 Service Manual - page 16
12
Controls and Systems
Model 337
PWM Duty Cycle
(Option I)
The PWM (Pulse Width Modulation) DUTY CYCLE
setting controls the length of time the refrigerant will
flow through each barrel (freezing cylinder).
PWM DUTY CYCLE
DUTY CYCLE: 80%
+ + +
-- -- --
SEL
The PWM duty cycle can be adjusted to a setting
between 30% -- 90%. The number chosen will be the
percentage of time refrigerant can flow per individual
seconds of compressor operation.
The factory default setting is 80% and can be
increased or decreased by increments of 10% by using
the arrow keys. This allows refrigerant to flow 80% of
a one second period. Pulling only the left draw handle
will allow 70% of the refrigerant to flow through the left
freezing cylinder and 10% through the right freezing
cylinder. Pulling only the right draw handle will allow
70% of the refrigerant to flow through the right freezing
cylinder and 10% through the left freezing cylinder. By
pulling the center draw handle, the refrigerant flow will
be divided equally (40% refrigerant flow through the
left freezing cylinder and 40% through the right
freezing cylinder).
Press the MENU/SEL key. This screen is used to set
the low percent for the PWM duty cycle. The factory
default setting is 10 and can be increased or
decreased by increments of 5%. The minimum setting
is 5 and the maximum setting is 15. If the low percent
is set at 5 and the duty cycle is set at 80, the freezing
cylinder being used will have 75% refrigerant flow and
the cylinder not being used will have 5% refrigerant
flow when the draw handle is pulled.
PWM DUTY CYCLE
MIN DUTY CYCLE: 10%
+ + +
-- -- --
SEL
Pressing the MENU/SEL key accepts the setting and
returns to the Service Menu.
Edit Unit ID
(Option J)
This option allows the technician to enter the factory
Bill of Materials code used to assemble the machine,
and the freezer serial number. The freezer B.O.M.
screen is displayed upon selecting this option.
ENTER FREEZER BOM
0 3 3 7 2 7 B 0 0 0
_
<- - - - - ->
+ + +
-- -- --
SEL
Pressing the OFF (<--) or STBY (-->) keys will move
the cursor left or right respectively with wraparound.
When the correct freezer B.O.M. has been entered,
pressing the MENU/SEL key displays the freezer
serial number.
ENTER FREEZER SN
J 0 0 0 0 0 0 0
_
<- - - - - ->
+ + +
-- -- --
SEL
Pressing the OFF (<--) or STBY (-->) keys will move
the cursor left or right respectively with wraparound.
Pressing the WASH (+ + +) or AUTO (-- -- --) keys
increase or decrease respectively, with rollover, the
selected character. When the correct freezer serial
number has been entered, pressing the MENU/SEL
key returns to the Service Menu.