Delfield Shelleymatic ACR-26S Service And Installation Manual page 9

MCII Tempatrol ® Optional Settings
Locking control settings
You can lock the control settings so that they cannot be
changed without knowing how to unlock them. This will pre-
vent unsupervised changes to the set point or defrost cycles.
1) Press the TIME and DOWN buttons simulta-
neously, then press the TEMP button.
2) Press the DEFROST button. The condensing unit
S T P E S
will shut off, and the display will read 000.
3) Press UP until the display reads 009.
4) Hold the TIME button, and press UP or DOWN
until the display shows L for locked, or U for
unlocked.
5) Release the TIME button. The display will blink to
indicate the command has been executed.
6) Press RESET. The condensing unit will restart,
and the display will return to the cabinet tempera-
ture. No control settings can be changed until the
locking procedure is reversed.
Over temperature alarms
You can select when the over temperature alarm will sound.
The following settings are available:
0:01
Alarm sounds when unit is over set point for 60 minutes
(default setting)
0:02
Alarm sounds when the unit is 5°F (3°C) over set point.
0:03
Alarm sounds when the unit is 10°F (6°C) over set point.
0:04
Alarm sounds when the unit is 15°F (8°C) over set point.
1) Press the TIME and DOWN buttons simulta-
neously, then press press the TEMP button.
2) Press the DEFROST button. The condensing unit
S T P E S
will shut off, and the display will read 000.
3) Press UP until the display reads 010.
4) Hold the TIME button, and press UP or DOWN
until the display shows the desired setting from
the chart above.
5) Release the TIME button. The display will blink to
indicate the command has been executed.
6) Press RESET. The condensing unit will restart, and
the display will return to the cabinet temperature.
Power up display
When the unit is restarted, you can choose to have the normal
temperature display appear (option 0:01), a flashing tempera-
ture display for 3 seconds (option 0:02) or a flashing clock
display for 3 seconds (option 0:03). The flashing displays may
help remind you to check the defrost, set point or clock set-
tings after a power interruption.
(continued)
1) Press the TIME and DOWN buttons simultaneous-
ly, then press the TEMP button.
2) Press the DEFROST button. The condensing unit
S T P E S
will shut off, and the display will read 000.
3) Press UP until the display reads 011.
4) Hold the TIME button, and press UP or DOWN
until the display shows the desired setting.
5) Release the TIME button. The display will blink to
indicate the command has been executed.
6) Press RESET. The condensing unit will restart, and
the display will return to the cabinet temperature.
Set point differential tolerance
The unit is set at the factory to hold the programmed set
point to within plus or minus 3°F (2°C), which is default
option 0:01. Depending on the alarm setting you have
selected, the alarm will sound when the cabinet temperature
is outside that range. You may change the differential toler-
ance to 2°F (1°C) by selecting option 0:02, or 1°F (0.5°C)
by selecting option 0:03.
1) Press the TIME and DOWN buttons simultaneous-
ly, then press the TEMP button.
2) Press the DEFROST button. The condensing unit
S T P E S
will shut off, and the display will read 000.
3) Press UP until the display reads 013.
4) Hold the TIME button, and press UP or DOWN
until the display shows the desired setting.
5) Release the TIME button. The display will blink to
indicate the command has been executed.
6) Press RESET. The condensing unit will restart,
and the display will return to the cabinet tempera-
ture.
Other programmable options
There are many other options accessible through the MCII
Tempatrol; these should be left to qualified service personnel,
however. For information on accessing the MCII Tempatrol's
self-diagnostic mode, see the next section.
Customer service FAX (517) 773-3210
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