Hoshizaki KM-150BAF Service Manual page 10

KM-150B_F models use either the Alpine Controller Board (orange):
PART NUMBER
2U0127-01
OR the Control Products Board (green):
PART NUMBER
2A0836-01
OR the Control Products Improved "E" Board (green):
PART NUMBER
2A1410-01
Features of All Three Controller Boards
(1) Maximum Water Supply Period - 6 minutes
Water Solenoid Valve opening, in the Defrost (Harvest) Cycle, is limited by
maximum period of the defrost timer. The Water Valve cannot remain open
longer than the maximum period. The Water Valve can close in less than the
maximum period if the defrost cycle is completed.
(2) Defrost Timer
The defrost cycle starts when the Float Switch opens and completes the
freeze cycle. But the Defrost Timer does not start counting until the Thermistor
senses 48°F at the Evaporator outlet. The period from the end of the freeze
cycle up to the point of the Thermistor's sensing varies depending on the
ambient and water temperatures.
(3) High Temperature Safety - 127 ± 7°F
The temperature of the suction line in the refrigerant circuit is limited by the
High Temperature Safety.
During the defrost cycle the Evaporator temperature rises. The Thermistor
senses 48°F and starts the Defrost Timer. After the Defrost Timer counts
down to zero, the normal freeze cycle begins. If the Evaporator temperature
continues to rise, the Thermistor will sense the rise in temperature and at 127
± 7°F the Thermistor operates the High Temperature Safety.
TYPE
MY9KM910 (Alpine)
MY9KM91B (Alpine)
TYPE
HOSHIZAKI 001 (Control Products - 8 Pin)
TYPE
HOS-001A (Control Products - 10 Pin)
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