Hoshizaki KM-320MAH Service Manual page 23

9) Shutdown
a) Thermostatic Bin Control (TBC):
When the appliance is running, hold ice in contact with the thermostatic bulb. TBC
switch opens within 10 sec., shutting down the appliance. TBC is factory set, and
generally no adjustment is required. However, adjustment may be needed in some
conditions, particularly at higher altitude locations.
• On "E" control boards, do not adjust S4 dip switch 7 out of the factory default
position. This dip switch must be left in the factory default position or the
appliance will not operate correctly.
• On "G" control boards, CB red K4 connector jumper (4A4883G01) must be in
place. Diagnosis: See "II.D.1. Thermostatic Bin Control Check."
b) Mechanical Bin Control:
See "II.D.2. Mechanical Bin Control Check and Cleaning."
Legend: BC–bin control; CB–control board; Comp–compressor; CV–check valve;
FM–fan motor; FMR–fan motor-remote; FS–float switch; HGV–hot gas valve;
HM–headmaster (C.P.R.); HPS–high-pressure switch; LLV–liquid line valve;
MBC–mechanical bin control; PM–pump motor; TBC–thermostatic bin control;
TXV–thermostatic expansion valve; WRV–water regulating valve; WV–inlet water
valve
NOTICE
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