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Refrigeration Service
This ice machine use R-134a type refrigerant.
There are specific rules for handling that
refrigerant.
To check for system pressures, add a field supplied
clamp-on type service valve as a temporary means
of system access. After diagnosis and before final
repair, replace the clamp-on type valve with valves
that are brazed onto the process tubes of the
system.
Use a low flow of dry nitrogen when brazing on the
system.
Install a new filter drier when replacing a
refrigeration component or after a refrigerant leak
repair.
Evacuate the system to at least 300 microns and
use a micron gauge to measure the evacuation
level.
Weigh in the nameplate charge. The machine is
critically charged and a partial ounce mis-charge
will affect performance.
Membrane Switch
Unplug and check connector pins (left side from
front is pin 1), read about 10 ohms when activating
the button, and OL when not pressing the button:
Pin 2-3 On/Off Switch; 4-3 Clean Reset Switch
Bin Thermostat Altitude Adjustment Screw
Degrees Rotation to Turn
Altitude
Adjustment Screw
1000
11 CW
2000
31 CW
3000
52 CW
4000
72 CW
5000
92 CW
6000
111 CW
7000
128 CW
January 2012
Page 32
SCCG50 & SCCP50
Service Manual
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