Name: Manitowoc WELTBILT NEO 310
Brand: Manitowoc
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Part Number 000014797 Rev02 05/18 57

G. Remove the Water Trough

• Apply downward pressure on the siphon tube and

remove from the bottom of the water trough.

• Remove the upper thumbscrew.

• While supporting the water trough remove the two

thumbscrews from beneath the water trough.

• Remove the water trough from the bin area.

Default Chapter3
- Safety Notices3
- Table of Contents9
General Information17
- Model Numbers17
- How to Read a Model Number19
- Ice Machine Warranty Information19
Installation21
- Location of Ice Machine21
- Ice Machine Clearance Requirements22
- Ice Machine Heat of Rejection22
- Leveling the Ice Machine23
- Electrical Requirements24
- Electrical Specifications24
- Water Service/Drains26
  - Water Supply26
  - Cooling Tower Applications27
Maintenance29
- Cleaning and Sanitizing Procedure29
- U240, U31029
- Cleaning and Sanitizing Procedure UDE06544
  - Cleaning the Condenser50
  - Removal from Service/Winterization51
- Cleaning and Sanitizing Procedure UDE08052
  - Cleaning the Condenser63
  - Removal from Service/Winterization64
Sequence of Operation U0140/UF0140/U019065
Uf0190/U240/Uf240/U310/Uf31065
- Touch Pad Features65
Ice Making Sequence of Operation68
- Control Board Revisions68
- Software Revisions68
- Sequence of Operation69
- Control Board Timers71
- Safety Limits72
- U310/UF310 Energized Parts Chart74
Operational Checks76
- Ice Thickness Check76
- Ice Thickness Adjustment76
- Minimum/Maximum Slab Weight77
Sequence of Operation UDE06578
- UDE065 Energized Parts Chart80
- Ice Thickness Adjustment81
Sequence of Operation UDE08082
- UDE080 Energized Parts Chart84
Operational Checks UDE08086
- Siphon System86
- Water Level86
- Water Level Check87
- Ice Thickness Check88
Troubleshooting89
- Troubleshooting U0140/UF0140/U019089
- Uf0190/U240/Uf240/U310/Uf31089
Troubleshooting UDE065130
- Diagnosing an Ice Machine that will Not Run130
- Refrigeration Diagnostics Overview UDE065131
- Normal Operation132
- Ice Production Check134
- Installation/Visual Inspection Checklist136
- Water System Checklist137
UDE065 Refrigeration Diagnostics138
- Flooding Expansion Valve Symptoms139
- Starving Expansion Valve/Low Refrigerant139
- Charge Symptoms139
- Overcharged System Symptoms139
- Analyzing Ice Formation Pattern140
- Analyzing Discharge Line Temperature142
- Analyzing Suction Line Temperature144
- Comparing Evaporator Inlet/Outlet147
- Temperatures147
- Discharge Line Temperature Analysis148
- Harvest Valve150
Troubleshooting UDE080154
- Diagnosing an Ice Machine that will Not Run154
- Safety Limit Feature155
- Diagnosing Ice Thickness Control Circuitry160
- Ice Production Check162
- Installation/Visual Inspection Checklist164
- Water System Checklist165
- Flooding Expansion Valve Symptoms167
- Starving Expansion Valve/Low Refrigerant167
- Charge Symptoms167
- Overcharged System Symptoms167
- Analyzing Ice Formation Pattern168
- Analyzing Discharge Line Temperature170
- Analyzing Suction Line Temperature172
- Comparing Evaporator Inlet/Outlet175
- Temperatures175
- Discharge Line Temperature Analysis176
- Harvest Valve178
Component Check Procedures183
- Main Fuse183
- Bin Switch184
- Uf240/U310/Uf310186
- Touch Pad186
- U310/Uf310188
- Float Switch188
- U310/Uf310190
- Water Trough Thermistor190
- Bin Thermostat192
- Ude065192
- Liquid Line Thermistor193
- Ude065193
- ON/OFF/WASH Toggle Switch195
- Ude065/Ude080195
- Compressor Electrical Diagnostics196
- Fan Cycle Control198
- Uf240/U310/Uf310198
- High Pressure Cutout (HPCO) Control199
- Uf240/U310/Uf310199
Filter-Driers200
Refrigerant Recovery/Evacuation201
- Definitions201
- Refrigerant Re-Use Policy202
- Recovery and Recharging Procedures204
- U310/Uf310204
- Recovery and Recharging Procedures207
- Ude065/Ude080207
System Contamination Cleanup210
- Determining Severity of Contamination210
- Mild System Contamination Cleanup212
- Procedure212
- Severe System Contamination Cleanup213
- Procedure213
- Replacing Pressure Controls Without214
- Removing Refrigerant Charge214
Total System Refrigerant Charge216
- Cycle Times, 24 Hr. Ice Production and Refrigerant Pressure Charts217
- UDE065 Operating Temperatures218
- UDE080 Self-Contained Air-Cooled220
- UDE080 Operating Temperatures221
- U0140/UF0140 Self-Contained Air-Cooled222
- U0140 Self-Contained Water-Cooled223
- U0190/UF0190 Self-Contained Air-Cooled224
- U0240/UF0240 Self-Contained Air-Cooled225
- U0240/UF0240 Self-Contained Water-Cooled226
- U0310/UF0310 Self-Contained Air-Cooled227
- U0310/UF0310 Self-Contained Water-Cooled228
Wiring Diagrams229
- UDE065 Wiring Diagram230
- UDE080 Wiring Diagram232
- Water233
- U0140/U0190/U0240 Wiring Diagram236
- With J4 Thermistor Terminal - 1Ph Air/Water236
- U0140/U0190/U0240 Wiring Diagram237
- U0140/U0190/U0240 Wiring Diagram238
- Prior to Thermistor Terminal - 1PH Air/Water238
- U0140/U0190/U0240 Wiring Diagram239
- UF0310 Wiring Diagram 1PH Air/Water240
- U0310 Wiring Diagram with J4 Thermistor Terminal - 1Ph Air/Water242
- U0310 Wiring Diagram243
- U0310 Wiring Diagram Prior to Thermistor Terminal - 1PH Air/Water244
- U0310 Wiring Diagram245
Electronic Control Boards246
- Electronic Control Board UF Models246
- Electronic Control Board U Models with J4248
- Thermistor Terminal248
- Electronic Control Board U Models Prior to250
- Thermistor Terminal250
- Electronic Control Board UDE065252
- Electronic Control Board UDE080254
Tubing Schematics256
- Tubing Schematic - UDE065256
- Tubing Schematic - UDE080/U0140/UF0140257
- Tubing Schematic - U0190/UF0190/U0240257

Manitowoc WELTBILT NEO 310 Technician's Handbook

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Brand	Manitowoc
Model	WELTBILT NEO 310
Category	Ice Maker
Language	English