Service Manual
Table Of Contents
- General Information
- Installation
- Component Identification
- Maintenance
- Sequence of Operation
- Troubleshooting
- Safety Limits
- Control Board Testing
- Troubleshooting By Symptom
- Symptom #4
- Symptom #1 Ice Machine will not run
- Diagnosing an Ice Machine that Will Not Run
- Compressor Electrical Diagnostics
- Symptom #2 Low Production, Long Freeze
- Symptom #2 - Freeze Cycle Refrigeration System Operational Analysis Tables
- Freeze Cycle Refrigeration System Operational Analysis Table Procedures
- Before Beginning Service
- Ice Production Check
- Installation/Visual Inspection Checklist
- Water System Checklist
- Ice Formation Pattern
- Analyzing Discharge Pressure in the Freeze Cycle
- Analyzing Suction Pressure
- Single Expansion Valve Ice Machines Comparing Evaporator Inlet and Outlet Temperatures
- Multiple Expansion Valve Ice Machines Comparing Evaporator Inlet and Outlet Temperatures
- Harvest Valve Analysis
- Discharge Line Temperature Analysis
- Water Regulating Valve
- Final Analysis
- Harvest Problems
- Component Check Procedures
- Electrical Components
- Compressor Electrical Diagnostics
- Refrigeration Components
- Refrigerant Recovery/Evacuation
- System Contamination Clean-Up
- Specifications
- Charts
- Diagrams
- Wiring Diagrams
- Wiring Diagram Legend
- Wiring Diagrams Before Energy Efficient & EnergyStar Machines
- S320 Self Contained - 1 Phase
- S300/S420/S450/ S500 (after serial number 110074051) - Self Contained - 1 Phase
- S500 (before serial number 110074051) S600/S850/S1000/S1200- Self Contained- 1 Phase
- S850/S1000/S1200 - Self Contained - 3 Phase
- S500 Danfoss Compressor (after serial number 110074051) - Remote - 1 Phase
- S500 (before serial number 110074051)/ S600/S850/S1000/S1200 - Remote - 1 Phase
- S850/S1000/S1200 - Remote - 3 Phase
- S1400/S1600/S1800 - Self-Contained - 1 Phase
- S1400/S1600/S1800 - Self-Contained - 3 Phase
- S1400/S1600/S1800 - Remote - 1 Phase
- S1400/S1600/S1800 - Remote - 3 Phase
- Wiring Diagrams for Energy Efficient & EnergyStar Machines
- S300/S420/S450/S500 Self-Contained - 1 Phase
- S600/S850/S1000/S1200 Self-Contained - 1 Phase
- S850/S1000/S1200 Self-Contained - 3 Phase
- S1400/S1800 Self-Contained - 1 Phase
- S1400/S1800 Self-Contained - 3 Phase
- S3300 Water-Cooled - 3 phase
- S500 Remote - 1 Phase
- S600/S850/S1000/S1200 Remote - 1 Phase
- S850/S1000/S1200 Remote - 3 Phase
- S1400/S1800 Remote - 1 Phase
- S1400/S1800 Remote - 3 Phase
- ST3000W
- Self-Contained - 3 Phase
- S3300W
- S3300WM Marine Self-Contained - 3 Phase
- Electronic Control Board
- Refrigeration Tubing Schematics
- Wiring Diagrams
190 Part Number 8014793 6/18
S450 SERIES
S450A
All Self-Contained Air-cooled Models Before Serial
Number 110670157
Characteristics may vary depending on operating conditions.
CYCLE TIMES
Freeze Time + Harvest Time = Total Cycle Time
24 HOUR ICE PRODUCTION
OPERATING PRESSURES
Air Temp.
Entering
Condenser
°F/°C
Freeze Time
Harvest
Time
1
1 Times in minutes
Water Temperature °F/°C
50/10 70/21 90/32
70/21 11.9-12.7 13.1-14.0 14.6-15.5
1-2.5
80/27 13.1-14.0 14.3-15.2 16.0-17.0
90/32 14.6-15.5 16.3-17.4 17.3-18.4
100/38 16.3-17.4 17.3-18.4 18.9-20.1
110/43 18.1-19.2 19.8-21.0 21.3-22.6
Air Temp. Entering
Condenser °F/°C
Water Temperature °F/°C
1
1 Based on average ice slab weight of 3.4 - 3.6 lb.
50/10 70/21 90/32
70/21 365 335 305
80/27 335 310 280
90/32 305 275 260
100/38 275 260 240
110/43 250 230 215
Air Temp
Entering
Condenser
°F/°C
Freeze Cycle Harvest Cycle
Discharge
Pressure
PSIG
Suction
Pressure
PSIG
1
1 Suction pressure drops gradually throughout the freeze cycle
Discharge
Pressure
PSIG
Suction
Pressure
PSIG
50/10
195-255 50-30 125-185 70-90
70/21 195-270 60-30 135-190 80-115
80/27 220-285 62-32 135-195 80-115
90/32 250-320 70-34 175-195 85-115
100/38 290-390 75-35 190-215 115-140
110/43 320-400 80-37 225-250 130-170