National Vendors shoppertron 431, Operator'S Manual

Page: 36 / 74

Shoppertron
TM
Operator’s Guide
July, 2003 Page 32 4310114
SET DEFROST OPTIONS
(Supervisor Mode Only)
The Shoppertron has a built-in defrost cycle to assure that ice does not build up
on the evaporator coil. Under extremely warm and humid conditions, it may be
necessary to adjust the defrost timing (see unscheduled defrosts below).
1. Follow the steps in "Gain Access to the Supervisor Mode" on page 17.
2. Press , then until the display shows
SET.DEFROST
.
3. Press . The display will show
X/DAY
. “X” is the number of times per
day that the defrost cycle operates. Press to change the value of X.
4. Press until the display shows
FOR XXMIN
.
XX represents how many minutes the defrost cycle operates. Press
to change the value of XX.
5. Press until something like the following displays:
2
>
NORM SINCE 2003 07/08 04.28
2 > NORM is a running total of the number of Unscheduled Defrosts the
compressor has performed since July 8 at 4:28. The time is in 24 hour for-
mat.
The controller monitors the compressor operation and may determine that a
defrost cycle is necessary in addition to the regularly scheduled defrost. If
more than 3 unscheduled defrosts occur per month, check that the door
seals properly. If no air leak is apparent, the scheduled defrost cycle can be
increased in rate or duration as in steps 2 and 3 above.
If desired, press to reset the counter to 0 and the counter date and
time to the present.
6. CONTINUE.