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MC222 and Condensing Unit
Remote Low Side User Manual
Initial Start Up
Pre Start
A soak-out period of four hours is optional for this
system. If desired, powering the compressor unit
for four hours prior to start up allows the crankcase
heater to warm up the oil in the compressor.
Start Up
1. Connect power to the condensing unit and move
its toggle switch to Run or On.
2. Open the water supply valve.
3. Switch on the electrical power to the MC222.
Observe that some of the lower control's indicator
lights glow and its display shows O.
4. Locate lower light and control panel.
5. Push and release the ON button on the lower
panel. The code display will begin to blink F.
The purge valve opens, the water pump starts and the
inlet water valve opens to add water to the reservoir.
In a few seconds the purge valve closes and the
water pump stops. Water will flow into the machine
until the reservoir is full. The vapor valve and harvest
assist device will activate, then the compressor and
water pump will start. F will be on steady.
Note: Because the condensing unit is external to the
ice making section, no visible signs of operation will
be noticeable until the water begins to cool and frost
forms on the evaporator tubing.
6. Go to the condensing unit and confirm that the
compressor and fan motor are operating. Warm
air will be discharged from the condenser.
Observe the Ready for Harvest indicator light. It may
blink early in the cycle, that is normal. The control will
ignore that signal for the first 6 minutes of freeze.
During the Freeze cycle move the curtain and observe
that either the SW1 or SW2 light on the control
board blinks On when the curtain moves away from
the evaporator and Off when returned to its normal
position.
Note: Moving the curtain during the Freeze cycle has
no affect on control function, but will cause water to
flow into the cube chute.
When enough ice has frozen, the Ready for Harvest
indicator light will be on steady. After it's been on
steady for a few seconds Harvest will begin.
The display shows an H. The vapor valve in the
MC222 opens, and the harvest assist mechanism
activates. In the CU the condenser bypass valve
opens and the receiver inlet valve closes. In the
MC222, the purge valve opens to drain some water,
when it does the inlet water valve opens to refill the
reservoir. After a few seconds the purge valve closes
but the inlet water valve continues to fill the reservoir.
Harvest continues until the ice is released as a unit
and forces the curtain to open.
When the curtain opens it signals the controller that
harvest is complete, and it returns the unit to a freeze
cycle.
7. Check the ice harvested for proper bridge
thickness. The ice bridge is factory set at 1/8 inch.
If needed, adjust bridge thickness. Do NOT make
it too thin.
8. Instruct the user in the operation of the machine
and its maintenance requirements.
9. Fill out and mail the warranty registration form or
register it on line at www.scotsman-ice.com.
June 2022
Page 19
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