Scotsman AC-EC 57 Service Manual page 35

Page 35
The P.C. BOARD is the brain of the system and
it elaborates, through its micro processor, the
signals received from the three sensors in order
At restart, from any tripping OFF at Bin Full, the
new PC Board assures 45 seconds water filling
phase so to refill the water sump up to the
maximum level.
In case of malfunction of the Optical Ice Level
Control, thenew PC Board switch ON alternativelt
the Yellow and Red Led continuously.
On the PC Board there are four jumpers to
select:
• 0 or 12 months remind time for the water
system cleaning
• Operation of the Purge Out Water Pump
(Jump IN on EC series)
• "no delay" or 60 minutes delay time at first start
up
• TEST
In case the TEST contacts are closed with the
Jumper, at the Start Up of the machine the PC
Board energizes all the electrical components for
maximum 3 minutes time.
to control the operation of the different electrical
components of the ice maker (compressor, water
pump, solenoid valves, etc.).
At the end of the 3 minutes the PC Board switch
OFF the entire machine with the blinking of all the
LED's as shown on the bottom drawing.
EC SERIES
0 OR 60 MINUTES
DELAY
0-12 6-12
MONTHS MONTHS TEST
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BLINKING
ON STEADY