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MC330, MC430, and ECC 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 . Remove the head's front panel . Check for any
packing or wires rubbing moving parts . Note
location of control board in upper left corner of the
machine's front .
4 . Remove any tape securing curtain to evaporator .
5 . Switch on the electrical power to the EH head .
Observe that some of the control's indicator lights
glow and its display shows O .
6 . Push and release the ON button . 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 valves and harvest
assist devices will activate, then the compressor and
water pump will start . The 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 .
7 . 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 curtains and
observe that 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 a 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 EH
opens, and the harvest assist mechanism activates .
In the CU the condenser fan stops and the condenser
bypass valve opens and the receiver inlet valve
closes . In the EH, 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 .
8 . 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 .
9 . Return the front panel to its normal position and
secure it to the machine .
10 . Instruct the user in the operation of the machine
and its maintenance requirements .
11 . Fill out and mail the warranty registration form or
register it on line at www .scotsman-ice .com .
June 2022
Page 17
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