Welbilt Manitowoc NEO UDP0080A User manual

Part Number STH098 06/19
UDP R290 Refrigerant
Undercounter Ice Machines
Technician’s Handbook
This manual is updated as new information and models are
released. Visit our website for the latest manual.
www.manitowocice.com

Safety Notices
Read these precautions to prevent personal injury:
• Read this manual thoroughly before operating,
installing or performing maintenance on the
equipment. Failure to follow instructions in this
manual can cause property damage, injury or death.
• Routine adjustments and maintenance procedures
outlined in this manual are not covered by the
warranty.
• Proper installation, care and maintenance are essential
for maximum performance and trouble-free operation
of your equipment.
• Visit our website www.manitowocice.com for manual
updates, translations, or contact information for
service agents in your area.
• This equipment contains high voltage electricity and
refrigerant charge. Installation and repairs are to be
performed by properly trained technicians aware of
the dangers of dealing with high voltage electricity
and refrigerant under pressure. The technician
must also be certified in proper refrigerant handling
and servicing procedures. All lockout and tag out
procedures must be followed when working on this
equipment.
• This equipment is intended for indoor use only. Do not
install or operate this equipment in outdoor areas.
• As you work on this equipment, be sure to pay close
attention to the safety notices in this handbook.
Disregarding the notices may lead to serious injury
and/or damage to the equipment.

nWarning
Follow these electrical requirements during
installation of this equipment.
• All field wiring must conform to all applicable
codes of the authority having jurisdiction. It is
the responsibility of the end user to provide the
disconnect means to satisfy local codes. Refer to
rating plate for proper voltage.
• This appliance must be grounded.
• This equipment must be positioned so that the plug
is accessible unless other means for disconnection
from the power supply (e.g., circuit breaker or
disconnect switch) is provided.
• Check all wiring connections, including factory
terminals, before operation. Connections can
become loose during shipment and installation.
• For a cord-connected appliance, the following must
be included:
• Do not unplug by pulling on cord. To unplug,
grasp the plug, not the cord.
• Unplug from outlet when not in use and before
servicing or cleaning.
• Do not operate any appliance with a damaged
cord or plug, or after the appliance malfunctions
or is dropped or damaged in any manner.
Contact the nearest authorized service
facility for examination, repair, or electrical or
mechanical adjustment

nWarning
Follow these precautions to prevent personal injury
during installation of this equipment:
• Installation must comply with all applicable
equipment fire and health codes with the authority
having jurisdiction.
• To avoid instability the installation area must be
capable of supporting the combined weight of the
equipment and product. Additionally the equipment
must be level side to side and front to back.
• Remove front panel before lifting and installing and
use appropriate safety equipment during installation
and servicing. Two or more people are required to
lift or move this appliance to prevent tipping and/
or injury.
• Do not damage the refrigeration circuit when
installing, maintaining or servicing the unit.
• Connect to a potable water supply only.
• This equipment contains refrigerant charge.

nWarning
Follow these precautions to prevent personal injury
while operating or maintaining this equipment.
• Legs or casters must be installed and the legs/casters
must be screwed in completely. When casters
are installed the mass of this unit will allow it to
move uncontrolled on an inclined surface. These
units must be tethered/secured to comply with all
applicable codes. Swivel casters must be mounted
on the front and rigid casters must be mounted on
the rear. Lock the front casters after installation is
complete.
• Some 50 Hz models may contain up to 150 grams
of R290 (propane) refrigerant. R290 (propane)
is flammable in concentrations of air between
approximately 2.1% and 9.5% by volume (LEL lower
explosion limit and UEL upper explosion limit). An
ignition source at a temperature higher than 470°C
is needed for a combustion to occur.
• Refer to nameplate to identify the type of refrigerant
in your equipment.
• Only trained and qualified personnel aware of the
dangers are allowed to work on the equipment.
• Read this manual thoroughly before operating,
installing or performing maintenance on the
equipment. Failure to follow instructions in this
manual can cause property damage, injury or death.
• Crush/Pinch Hazard. Keep hands clear of moving
components. Components can move without
warning unless power is disconnected and all
potential energy is removed.
• Moisture collecting on the floor will create a
slippery surface. Clean up any water on the floor
immediately to prevent a slip hazard.

nWarning
Follow these precautions to prevent personal injury
while operating or maintaining this equipment.
• Objects placed or dropped in the bin can affect
human health and safety. Locate and remove any
objects immediately.
• Never use sharp objects or tools to remove ice or
frost.
• Do not use mechanical devices or other means to
accelerate the defrosting process.
• When using cleaning fluids or chemicals, rubber
gloves and eye protection (and/or face shield) must
be worn.
DANGER
Do not operate equipment that has been misused,
abused, neglected, damaged, or altered/modified
from that of original manufactured specifications.
This appliance is not intended for use by persons
(including children) with reduced physical, sensory
or mental capabilities, or lack of experience and
knowledge, unless they have been given supervision
concerning use of the appliance by a person
responsible for their safety. Do not allow children to
play with, clean or maintain this appliance without
proper supervision.

DANGER
Follow these precautions to prevent personal injury
during use and maintenance of this equipment:
• It is the responsibility of the equipment owner to
perform a Personal Protective Equipment Hazard
Assessment to ensure adequate protection during
maintenance procedures.
• Do Not Store Or Use Gasoline Or Other Flammable
Vapors Or Liquids In The Vicinity Of This Or Any
Other
• Appliance. Never use flammable oil soaked cloths or
combustible cleaning solutions for cleaning.
• All covers and access panels must be in place and
properly secured when operating this equipment.
• Risk of fire/shock. All minimum clearances must be
maintained. Do not obstruct vents or openings.
• Failure to disconnect power at the main power
supply disconnect could result in serious injury or
death. The power switch DOES NOT disconnect all
incoming power.
• All utility connections and fixtures must be
maintained in accordance with the authority having
jurisdiction.
• Turn off and lockout all utilities (gas, electric, water)
according to approved practices during maintenance
or servicing.
• Units with two power cords must be plugged
into individual branch circuits. During movement,
cleaning or repair it is necessary to unplug both
power cords.
We reserve the right to make product improvements at
any time. Specifications and design are subject to change
without notice.

Table of Contents
Part Number STH098 06/19 9
General Information
Model Numbers ............................15
How to Read a Model Number ................15
Model/Serial Number Location ............16
Warranty ..................................17
Warranty Registration....................17
Installation
Location of Ice Machine ......................19
Ice Machine Clearance Requirements ..........20
Ice Machine Heat of Rejection ................20
Leveling the Ice Machine .....................21
Electrical Requirements ......................22
Electrical Specifications ......................23
Water Service/Drains . . . . . . . . . . . . . . . . . . . . . . . .24
Water Supply ...........................24
Maintenance
Detailed Descaling and Sanitizing Procedure ,
UDP0140, UDP0240, UDP0310 ................27
Remedial Cleaning.......................37
Cleaning the Condenser ..................39
Removal from Service/Winterization........40
Bin Removal ............................41
Detailed Descaling and Sanitizing Procedure
UDP0080 ..................................42
Cleaning The Condenser..................53
Removal from Service/Winterization........54

10 Part Number STH098 06/19
Operation
Sequence of Operation UDP0140/UDP0240/
UDP0310 ..................................55
Touch Pad Features ......................55
Ice Making Sequence of Operation.............58
Sequence of Operation...................58
Control Board Timers ....................60
Safety Limits............................61
UDP0140/UDP0240/UDP0310 Energized Parts
Chart..................................63
Operational Checks..........................65
Ice Thickness Check......................65
Ice Thickness Adjustment.................65
Minimum/Maximum Slab weight ..........66
Sequence of Operation UDP0080 ..............67
UDP0080 Energized Parts Chart............69
Operational Checks UDP0080 .................71
Siphon System ..........................71
Water Level ............................71
Water Level Check.......................72
Ice Thickness Check......................73

Part Number STH098 06/19 11
Troubleshooting
Troubleshooting UDP0140/UDP0240/UDP0310 ..75
Problem Checklist .......................75
Control Board Test Mode .................78
Operating Ice Machine with Bin and Touch Pad
Removed ..............................78
Safety Limit Feature .....................79
Diagnosing an Ice Machine that Will Not Run 86
Ice Machine Does Not Cycle Into Harvest when
the Harvest Float is down/closed...........87
Ice Machine Cycles Into Harvest Before the
Harvest Float is down/closed ..............89
Ice Production Check ....................91
Installation/Visual Inspection Checklist......93
Water System Checklist...................94
Refrigeration Diagnostics .....................96
Eliminate all non refrigeration problems before
diagnosing the refrigeration system. .......96
Ice Formation Pattern ....................97
Discharge Line Temperature Analysis .......98
Comparing Evaporator Inlet/Outlet
Temperatures...........................99
Refrigeration Diagnostic Procedure........100
Flooding Expansion Valve Symptoms ......101
Starving Expansion Valve/Low Refrigerant
Charge Symptoms ......................101
Overcharged System Symptoms...........102
Higher than normal freeze cycle temperatures .
.....................................102
Harvest Valve ..........................103

12 Part Number STH098 06/19
Troubleshooting UDP0080 ...................107
Safety Limit Feature ....................107
Diagnosing An Ice Machine That Will Not Run .
.....................................112
Diagnosing Ice Thickness Control Circuitry ..113
Ice Production Check ...................115
Installation/Visual Inspection Checklist.....117
Water System Checklist..................118
UDP0080 Refrigeration Diagnostics ...........119
Eliminate all non refrigeration problems before
diagnosing the refrigeration system .......119
Analyzing Ice Formation Pattern ..........120
Discharge Line Temperature Analysis ......122
Comparing Evaporator Inlet/Outlet
Temperatures..........................123
Refrigeration Diagnostic Procedure........124
Flooding Expansion Valve Symptoms ......125
Starving Expansion Valve/Low Refrigerant
Charge Symptoms ......................125
Overcharged System Symptoms...........126
Higher than normal freeze cycle temperatures .
.....................................126
Harvest Valve ..........................127

Part Number STH098 06/19 13
Component Check Procedures
Main Fuse ............................131
Bin Switch
UDP0080/UDP0140/UDP0240/UDP0310 ...132
Touch Pad
UDP0140/UDP0240/UDP0310 ............134
Float Switch
UDP0140/UDP0240/UDP0310 ............136
Water Trough Thermistor
UDP0140/UDP0240/UDP0310 ............138
ON/OFF/WASH Toggle Switch
UDP0080 .............................140
Fan Cycle Control
UDP0080/UDP0140/UDP0240/UDP0310 ...141
High Pressure Cutout (HPCO) Control
UDP0080 /UDP0140/UDP0240/UDP0310...142
Compressor Electrical Diagnostics .........143
Filter-Driers ...............................145
Flammable Refrigerant Procedures
Servicing Requirements .....................146
Refrigerant Purging Requirements ........147
Refrigerant Purging Procedure............148
Brazing Procedure ......................148
Pressure Testing........................149
Evacuation ............................149
Refrigerant Charging........................150
System Contamination Cleanup ..............152
Determining Severity of Contamination ....152
Mild System Contamination Cleanup Procedure
.....................................154
Severe System Contamination Cleanup
Procedure.............................155
Total System Refrigerant Charge ..............156

14 Part Number STH098 06/19
Charts
Cycle Times, 24 Hr. Ice Production and Refrigerant
Temperature Charts ........................157
UDP0080 Self-contained Air-cooled........158
UDP0080 Operating Temperatures ........159
UDP0140 Self-contained Air-cooled........160
UDP0140 Operating Temperatures ........161
UDP0240 Self-contained Air-cooled........162
UDP0240 Operating Temperatures ........163
UDP0310 Self-contained Air-cooled........164
UDP0310 Operating Temperatures ........165
Diagrams
Wiring Diagrams ...........................167
UDP0080 Wiring Diagram................168
UDP0140/UDP0240 - 1Ph Air-cooled.......170
UDP0310 1Ph Air-cooled ................172
Electronic Control Boards ...............174
Electronic Control Board UDP0140/UDP0240/
UDP0310 .............................174
Electronic Control Board UDP0080 ........176
Tubing Schematics .........................178
Tubing Schematic - UDP0080/UDP0140 ....178
Tubing Schematic - UDP0240/UDP0310 ....178

Part Number STH098 06/19 15
Model Numbers
This manual covers the following models:
Self-contained
Air-cooled
UDP0080A
UDP0140A
UDP0240A
UDP0310A
How to Read a Model Number
U D P 0140 A E
Cube Size
Series
Capacity
Condenser
Type
E - WRAS 50Hz
A - Air-cooled
R - Regular
D - Dice
Y - Half-dice
nWarning
An ice machine contains high voltage electricity and
refrigerant charge. Repairs are to be performed by
properly trained refrigeration technicians aware of the
dangers of dealing with high voltage electricity and
refrigerant under pressure.
General Information
Refrigerant
E - R290
F - R404A
P - R134A
Blank - Not
Indicated

16 Part Number STH098 06/19
Model/Serial Number Location
These numbers are required when requesting information
from your local Manitowoc Distributor, Service
Representative, or Manitowoc Ice.
The model/serial number data plate is located in the
evaporator compartment and on the back of the ice
machine.

Part Number STH098 06/19 17
Warranty
For warranty information visit:
www.manitowocice.com/Service/Warranty
• Warranty Coverage Information
• Warranty Registration
• Warranty Verification
Warranty coverage begins the day the ice machine is
installed.
WARRANTY REGISTRATION
Completing the warranty registration process is a quick and
easy way to protect your investment.
Scan the QR code with your smart device or enter the link
in a web browser to complete your warranty registration.
WWW.MANITOWOCICE.COM/SERVICE/WARRANTY#WARRANTY-
REGISTRATION
Registering your product insures warranty coverage and
streamlines the process if any warranty work is required.

18 Part Number STH098 06/19
THIS PAGE INTENTIONALLY LEFT BLANK

Part Number STH098 06/19 19
Location of Ice Machine
The location selected for the ice machine must meet the
following criteria. If any of these criteria are not met,
select another location.
• The location must be indoors.
• The location must be free of airborne and other
contaminants.
• Air temperature: Must be at least 50°F (10°C) but must
not exceed 113°F (43.4°C).
• UDP0080: Must be at least 40°F (4°C) but must not
exceed 110°F (45°C)
• The location must not be near heat-generating
equipment or in direct sunlight.
• The location must be capable of supporting the weight
of the ice machine and a full bin of ice.
• The location must allow enough clearance for water,
drain, and electrical connections in the rear of the ice
machine.
• The location must not obstruct airflow through or
around the ice machine (condenser airflow is in and
out the front). Refer to the chart below for clearance
requirements.
• The ice machine must be protected if it will be
subjected to temperatures below 32°F (0°C). Failure
caused by exposure to freezing temperatures is not
covered by the warranty.
Installation

20 Part Number STH098 06/19
Ice Machine Clearance Requirements
Self-contained Air-cooled
Top/Sides 5" (127 mm)*
Back 5" (127 mm)*
*The ice machine may be built into a cabinet.
Ice Machine Heat of Rejection
Series
Ice Machine
Heat of Rejection*
Air Conditioning** Peak
UDP0080 1750 2600
UDP0140 2400 2900
UDP0240 2800 3300
UDP0310 3800 6000
* B.T.U./Hour
** Because the heat of rejection varies during the ice
making cycle, the figure shown is an average.
Ice machines, like other refrigeration equipment, reject
heat through the condenser. It is helpful to know the
amount of heat rejected by the ice machine when sizing air
conditioning equipment where self-contained air-cooled
ice machines are installed.