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- KMD-850MAH
- Service manual
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II. General Information
A. Construction
1a. Air-Cooled Auxiliary Code C-0 and Earlier
Inlet Water Valve
Spray Tubes Water Supply Inlet
Hot Gas Valve
Junction Box
Condenser
Control Box
Float Switch
Drain Valve
Thermostatic
Expansion
Valves
Water Pump
Cleaning Valve
Condenser
Fan Motor
Control Switch
Drier
Compressor
Bin Control
10
1b. Air-Cooled Auxiliary Code C-1 and Later
Spray Tubes
Thermostatic
Expansion
Valves
Inlet Water Valve
Water Supply Inlet
Hot Gas Valve
Junction Box
Condenser
Control Box
Float Switch
Drain Valve
Cleaning Valve
Water Pump
Condenser
Fan Motor
Control Switch
Main Transformer
Drier
Compressor
Bin Control
11
2a. Water-Cooled Auxiliary Code C-1 and Earlier
Spray Tubes
Inlet Water Valve
Water Supply Inlet
Hot Gas Valve
Junction Box
Condenser
Control Box
Water
Regulator
Control Switch
Drier
Compressor
Float Switch
Drain Valve
Water Pump
Cleaning Valve
Thermostatic
Expansion
Valves
Bin Control
12
2b. Water-Cooled Auxiliary Code C-2 and Later
Spray Tubes Inlet Water Valve
Water Supply Inlet
Hot Gas Valve
Junction Box
Thermostatic
Expansion
Valves
Water
Regulator
Condenser
Control Box
Float Switch
Drain Valve
Water Pump
Cleaning Valve
Control Switch
Bin Control
Drier
Compressor
Main Transformer
13
3a. Remote Air-Cooled Auxiliary Code C-0 and Earlier
Inlet Water Valve
Spray Tubes
Water Supply Inlet
Hot Gas Valve
Junction Boxes
Float Switch
Drain Valve
Water Pump
Cleaning Valve
Thermostatic
Expansion
Valves
Bin Control
Control Box
Receiver Tank
Control Switch
Drier
Liquid Line Valve
Compressor
14
3b. Remote Air-Cooled Auxiliary Code C-1 and Later
Spray Tubes
Inlet Water Valve
Water Supply Inlet
Hot Gas Valve
Main Transformer
Junction
Boxes
Float Switch
Drain Valve
Water Pump
Cleaning Valve
Thermostatic
Expansion
Valves
Control Box
Receiver
Tank
Control Switch
Drier
Liquid Line Valve
Compressor
Bin Control
15
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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