28
Controls, Systems and Operations
Model C723
Freezer Lockout
Hardlock
An example of a hard lock is Product Over Temp.
(See Figure 58.)
PRODUCT OVER TEMP
FREEZER LOCKED
CLEANING REQ’D
> Brush Clean
Figure 58
Pressing the SEL key will display the following
screen for a Domestic unit. (See Figure 59.)
FREEZER LOCKED
Figure 59
The following screen is for an International unit.
(See Figure 60.)
HOPPER
41.0
41.0
FREEZER LOCKED
Figure 60
Line 1 -
Displays the hopper temperatures for
International units, only.
Line 2
- Blank
Line 3
- Blank
Line 4
- Displays “FREEZER LOCKED”
If the machine is hardlocked and an attempt is made
to enter AUTO, the machine will enter STANDBY
and display the following screen for a Domestic unit.
(See Figure 61.)
L:
DO NOT DRAW
R:
DO NOT DRAW
FREEZER LOCKED
Figure 61
The following screen is for an International unit.
(See Figure 62.)
HOPPER
41.0
41.0
L:
DO NOT DRAW
R:
DO NOT DRAW
FREEZER LOCKED
Figure 62
Power Failure Recovery
When a power failure is detected by the control, all
operating modes and set points are stored in
ferromagnetic (FRAM) memory. Having been in
AUTO or STANDBY, recovery from a power failure
will return the machine to the previous mode of
operation after a Memory Initialization function has
occurred. If a power failure has occurred, the Safety
Timeout screen will display a POWER FAILURE
message on the first line of the screen.
If the freezing cylinder or hopper temperature rise
above 45
_
F (7
_
C) for more than one hour or rise
above 41
_
F (5
_
C) for four hours, the machine will
soft lock when power is restored. If the temperature
rises above 59
_
F (15
_
C), the machine will lock
immediately.
Brush Clean Conditions and Status
Screen
Every day the unit must be brush cleaned and the
following criteria must be met.
The freezing cylinder and hopper temperatures must
be above 60
_
F (16
_
C), the mix out and mix low
probes must not be satisfied, and the product door
must be removed for a minimum of five minutes for
the control to recognize that the machine has been
brush cleaned.
Note: These criteria must be met
simultaneously for 5 minutes.
These criteria will
be met when the unit is properly brush cleaned,
following the procedures in the Operator's Manual.
Summary of Contents for C723
Page 2: ......
Page 39: ...35 Model C723 Controls Systems and Operations 140519 C723 Control Overview Figure 72 ...
Page 41: ...37 Model C723 Controls Systems and Operations 130409 Refrigeration Schematic Figure 73 ...
Page 52: ...48 Troubleshooting Model C723 Notes ...
Page 55: ...51 Model C723 Parts Notes ...
Page 56: ...52 Parts Model C723 150603 Model C723 Exploded View Figure 74 ...
Page 59: ...55 Model C723 Parts 140519 Model C723 Operator Parts Figure 75 ...