Manitowoc Indigo NXT Series Technician's Handbook

Manitowoc Indigo NXT Series

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Part Number: 000015431 Rev01 5/19

QuietQube Series Ice Machines

Technician’s Handbook

®

Table of Contents

Default Chapter3
- Safety Notices3
- Definitions4
- Table of Contents13
General Information19
- How to Read a Model Number19
  - Head Sections19
  - CVD Condensing Units20
- Ice Cube Sizes20
- Model/Serial Number Location21
- Warranty22
  - Warranty Registration22
- Model Numbers23
  - Quietqube® Models23
- Luminice® II24
- Location of Ice Machine26
- Clearance Requirements29
- Dual Evaporator Model Installation on a Manitowoc30
- Bin30
- Ice Machine on a Dispenser Installation31
- Water Supply and Drains32
- Lineset Applications33
- Quietqube® Remote Condensing Unit34
- Additional Refrigerant Charge for 51' to 100' Line35
- Sets35
Cleaning and Sanitizing37
- General37
- Cleaning/Sanitizing Procedure38
- Preventative Maintenance Cleaning Procedure38
- Iaucs38
- Exterior Cleaning38
Touchscreen Operation for the Clean Cycle39
- Starting a Clean Cycle39
- Water Curtain/Damper Operation During the Clean Cycle39
- Pausing a Clean Cycle39
- Power Interruption During Clean Cycle39
- Aborting a Clean Cycle39
Cleaning/Sanitizing Procedure40
- Cleaning Procedure40
- Sanitizing Procedure43
- Parts Removal for Cleaning/Sanitizing45
Preventative Maintenance Cleaning Procedure54
Removal from Service/Winterization56
Operation57
Operational Checks57
- General57
- Ice Thickness Check58
Sequence of Operation60
- Quietqube® Models60
- Initial Start-Up or Start-Up after60
- Automatic Shut-Off60
- Freeze Sequence61
- Harvest Sequence63
- Automatic Shut-Off64
- Restart after Automatic Shut-Off64
Menu Navigation69
- Touch Screen Features69
  - Home Screen Icon Descriptions71
- Setup Wizard73
- Menu Navigation Overview74
Troubleshooting81
- Event Log82
- Event Log Detail83
- Thaw Cycle88
- Safe Operation Mode89
- E01 Long Freeze Cycle90
- E02 Long Harvest Cycle90
- Analyzing Why a Service Fault (E01 & E02)90
- Stopped the Ice Machine90
- E01 Long Freeze91
- E02 Long Harvest92
Troubleshooting by Symptom93
- Symptom #1 Ice Machine Stops Running93
- Symptom #2 Ice Machine Has a Long Freeze93
- Cycle93
- Symptom #3 will Not Harvest, Cubes Normal93
- Symptom #4 will Not Harvest Cubes Melted93
- Reset to Factory Defaults94
- Symptom #1 Ice Machine will Not Run95
- Diagnosing a Condensing Unit98
- That will Not Run98
- Symptom #2 Low Production, Long Freeze Cycle99
- Symptom #3 Harvest Problems115
- Failure Type and Symptoms119
- Condensing Units121
- Condensing Units125
Component Check Procedures127
- Control Board, Display and Touchscreen127
- Operating an Ice Machine Without a129
- Touchscreen129
- Control Board Relay Test130
- Programming a Replacement Control Board131
- USB Flash Drive Specifications and Formatting132
- Exporting Data to a Flash Drive133
- Upgrading Firmware with a Flash Drive134
- Main Fuse135
- Bin Switch136
- Water Level Control Circuitry139
- Ice Thickness Probe (Initiates Harvest)142
- Bin Level Probe146
- Thermistors148
- High Pressure Cutout (HPCO) Control151
- Low Pressure Cutout (LPCO) Control152
- Compressor Time Delay153
- Fan Cycle Control154
- Harvest Assist Air Pump155
- Compressor Electrical Diagnostics156
- Diagnosing Start Components158
- Refrigeration Components159
  - Head Pressure Control Valve159
  - Suction Accumulator Operation165
- Recovery/Evacuation/Charging Procedures166
- Quietqube® Models166
  - Connections167
  - Recovery/Evacuation Procedures168
  - Charging Procedures169
- System Contamination Clean-Up170
  - Determining Severity of Contamination170
  - Contamination Cleanup Chart171
  - Cleanup Procedure172
  - Liquid Line Filter-Driers175
  - Suction Filter175
  - Replacing Pressure Controls Without Removing176
  - Refrigerant Charge176
- Total System Refrigerant Charge177
- Quietqube® CVD Models177
Cycle Times/24-Hour Ice Production/Refrigerant179
Pressure Charts179
- If0600C/Cvdf0600180
- Ibf0620C/Cvdf0600181
- Ibf0820C/Cvdf0900182
- If0900C/Cvdf0900183
- Ibt1020C/Cvdt1200184
- It1200C/Cvdt1200185
- If1400C/Cvdf1400186
- If1800C/Cvdf1800187
- If2100C/Cvdf2100188
Wiring Diagrams189
- Wiring Diagram Legend189
- IF0600C/IBF0620C/IBF0820C/IF0900C 1Ph190
- IT1200C/IBT1020C 1Ph192
- IF1400C/IF1800C/IF2100C 1Ph194
- CVD 1Ph Condensing Unit196
- CVD 3Ph Condensing Unit198
Electronic Control Board200
Refrigeration Tubing Schematics202
- If0600C/Cvdf0600 Ib0620C/Cvdf0600 Ibf0820/Cvdf0900 If0900C/Cvdf0900202
- Ibt1020C/Cvdt1200 It1200C/Cvdt1200204
Dual Evaporators206
- If1400C/If1800C206
- If2100C208

Other manuals for Manitowoc Indigo NXT Series

Installation, Operation And Maintenance Manual57 pages

Questions and Answers:

J
Jamie GarciaJul 29, 2025
Why is my Manitowoc Indigo NXT not working?
- J
  Justin SmithJul 29, 2025
  If your Manitowoc Ice Maker isn't operating, several factors could be at play. First, ensure the unit is receiving electrical power by checking the fuse, resetting the breaker, or turning on the main switch. A tripped high-pressure cutout might also be the culprit, requiring you to clean the condenser coil. Confirm that Energy Saver settings or other custom programming aren't inadvertently halting the ice machine. Make sure the water curtain is correctly installed and swings freely. Verify the ice machine is powered on, with the display indicating “Making Ice”. For IB Models, check that the dispenser ice level thermostat is correctly adjusted.

Manitowoc Indigo NXT Series Specifications

General

Model	Indigo NXT Series
Ice Production	Varies by model
Ice Storage	Varies by model
Energy Efficiency	Energy Star certified models available
Refrigerant	R290 (varies by model)
Cooling System	Air-cooled or water-cooled (varies by model)
Condenser Type	Air-cooled, Water-cooled, or Remote
Touch Display	Yes, with intuitive interface
Control	Cleaning Alerts
Features	Self-cleaning, remote monitoring, energy-saving modes
Power Supply	Varies by model (typically 115V or 208-230V)
Dimensions (H x W x D)	Varies by model
Weight	Varies by model

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