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A. Water Circuit and Refrigeration Circuit. Hoshizaki KMD-850MAH, KMD-850MWH, KMD-850MRH
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Table of contents
- 5 I. Specifications
- 5 A. Icemaker
- 5 1. KMD-850MAH (air-cooled)
- 6 2. KMD-850MWH (water-cooled)
- 7 3. KMD-850MRH (remote air-cooled)
- 8 B. Condenser Unit
- 8 1. URC-9F
- 10 II. General Information
- 10 A. Construction
- 10 1a. Air-Cooled Auxiliary Code C-0 and Earlier
- 11 1b. Air-Cooled Auxiliary Code C-1 and Later
- 12 2a. Water-Cooled Auxiliary Code C-0 and Earlier
- 13 2b. Water-Cooled Auxiliary Code C-1 and Later
- 14 3a. Remote Air-Cooled Auxiliary Code C-0 and Earlier
- 15 3b. Remote Air-Cooled Auxiliary Code C-1 and Later
- 16 B. Sequence of Operation
- 16 1. One Minute Fill Cycle
- 16 2. Initial Harvest Cycle
- 16 3. Freeze Cycle
- 16 4. Pump-Out Cycle
- 17 5. Normal Harvest Cycle
- 19 C. Control Board
- 20 1. Control Board Layout
- 21 2. Features
- 21 a) Maximum Water Supply Period – 6 minutes
- 21 b) Harvest Backup Timer and Freeze Timer
- 21 c) High Temperature Safety
- 21 d) Low Water Safety
- 21 e) High Voltage and Low Voltage Cut-outs
- 22 f) LED Lights and Audible Alarm Safeties
- 23 3. Controls and Adjustments
- 23 a) Default Dip Switch Settings
- 23 b) Harvest Timer (S4 dip switch 1 & 2)
- 24 c) Pump-Out Timer (S4 dip switch 3 & 4)
- 24 d) Pump-Out Frequency Control (S4 dip switch 5 & 6)
- 25 e) S4 Dip Switch 7 & 8
- 25 f) Freeze Timer (S4 dip switch 9 & 10)
- 25 g) Float Switch Control (S5 dip switch 1 through 5)
- 25 4. Control Board Check Procedure
- 26 5. Control Board Replacement
- 26 D. Harvest Control – Thermistor
- 26 1. Thermistor Check Procedure
- 26 E. Float Switch
- 26 1. Float Switch Check Procedure
- 28 2. Float Switch Cleaning
- 29 F. Bin Control
- 29 1. Explanation of Operation
- 29 2. Bin Control Check Procedure
- 30 III. Technical Information
- 30 A. Water Circuit and Refrigeration Circuit
- 30 1. Air-Cooled Model
- 31 2. Water-Cooled Model
- 32 3. Remote Air-Cooled Model
- 33 B. Wiring Diagrams
- 33 1a. KMD-850MAH Auxiliary Code C-0 and Earlier
- 33 KMD-850MWH Auxiliary Code C-1 and Earlier
- 34 1b. KMD-850MRH Auxiliary Code C-0 and Earlier
- 35 2. KMD-850MAH and KMD-850MRH Auxiliary Code C-1 and Later
- 35 KMD-850MWH Auxiliary Code C-2 and Later
- 36 C. Performance Data
- 36 1. KMD-850MAH (air-cooled)
- 37 2. KMD-850MWH (water-cooled)
- 38 3. KMD-850MRH (remote air-cooled)
- 39 IV. Service Diagnosis
- 39 A. 10-Minute Diagnostic Procedure
- 41 B. Diagnostic Charts
- 41 1. No Ice Production
- 44 2. Evaporator is Frozen Up
- 45 3. Low Ice Production
- 46 4. Abnormal Ice
- 46 5. Other
- 47 V. Refrigeration Circuit and Component Service Information
- 47 A. Refrigeration Circuit Service Information
- 47 1. Refrigerant Recovery
- 48 2. Brazing
- 48 3. Evacuation and Recharge (R-404A)
- 50 B. Component Service Information
- 50 C. Adjustment of Water Regulating Valve - Water-Cooled Model Only
- 51 VI. Maintenance
- 52 VII. Preparing the Icemaker for Long Storage
- 54 VIII. Disposal