Manitowoc NEO User manual

Technician’s
Handbook
This manual is updated as new information and models are
released. Visit our website for the latest manual.
www.manitowocice.com
America’s #1 Selling Ice Machine
Manitowoc
Undercounter
Ice Machines
Part Number STH042 3/14

Safety Notices
As you work on Manitowoc 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.
Throughout this handbook, you will see the following
types of safety notices:
!Warning
Text in a Warning box alerts you to a potential
personal injury situation. Be sure to read the
Warning statement before proceeding, and work
carefully.
!Caution
Text in a Caution box alerts you to a situation in
which you could damage the equipment. Be sure
to read the Caution statement before proceeding,
and work carefully.

Procedural Notices
As you work on Manitowoc equipment, be sure to read
the procedural notices in this handbook. These notices
supply helpful information which may assist you as
you work.
Throughout this handbook, you will see the following
types of procedural notices:
NOTE: Text set off as a Note provides you with simple,
but useful, extra information about the procedure you
are performing.
Important
Text in an Important box provides you with
information that may help you perform a
procedure more efficiently. Disregarding this
information will not cause damage or injury, but it
may slow you down as you work.

Read These Before Proceeding:
!Caution
Proper installation, care and maintenance are
essential for maximum performance and trouble-
free operation of your equipment. Visit our
website www.manitowocfsg.com for manual
updates, translations, or contact information for
service agents in your area.
Important
Routine adjustments and maintenance
procedures outlined in this handbook are not
covered by the warranty.
!Warning
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.
!Warning
Do not use electrical appliances or accessories
other than those supplied by Manitowoc for your ice
machine model.
!Warning
Two or more people or a lifting device are
required to lift this appliance.

!Warning
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.
!Warning
Do not damage the refrigeration circuit when
installing, maintaining or servicing the unit.
!Warning
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 this appliance.
!Warning
All covers and access panels must be in place
and properly secured, before operating this
equipment.

!Warning
Do not obstruct machine vents or openings.
!Warning
Do not store gasoline or other flammable vapors
or liquids in the vicinity of this or any other
appliance.
!Warning
Do not clean with water jet.
!Warning
It is the responsibility of the equipment owner to
perform a Personal Protective Equipment Hazard
Assessment to ensure adequate protection
during maintenance procedures.
!Warning
Two or more people are required to move this
equipment to prevent tipping.

!Warning
When using electric appliances, basic
precautions must always be followed, including
the following:
a. Read all the instructions before using
the appliance.
b. To reduce the risk of injury, close
supervision is necessary when an
appliance is used near children.
c. Do not contact moving parts.
d. Only use attachments recommended or
sold by the manufacturer.
e. Do not use outdoors.
f. 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.
g. Follow applicable lock out tag out
procedures before working on
equipment.
h. Connect to a properly grounded outlet
only.
We reserve the right to make product
improvements at any time. Specifications and
design are subject to change without notice.

Part Number STH042 3/14 9
Table of Contents
GENERAL INFORMATION
Model Numbers . . . . . . . . . . . . . . . . . . . . . 13
How to Read a Model Number . . . . . . . . . 14
Ice Machine Warranty Information . . . . . 15
Residential Warranty Coverage . . . . . 17
INSTALLATION
Location of Ice Machine . . . . . . . . . . . . . . 21
Ice Machine Clearance Requirements . . 22
Ice Machine Heat of Rejection . . . . . . . . . 22
Leveling the Ice Machine . . . . . . . . . . . . . 23
Electrical Requirements . . . . . . . . . . . . . . 24
Electrical Specifications . . . . . . . . . . . . . 25
Water Service/Drains . . . . . . . . . . . . . . . . 27
Water Supply . . . . . . . . . . . . . . . . . . . . 27
Water Inlet Lines . . . . . . . . . . . . . . . . . 27
Drain Connections . . . . . . . . . . . . . . . . 28
Cooling Tower Applications . . . . . . . . . 28
MAINTENANCE
Interior Cleaning and Sanitizing . . . . . . . 31
General . . . . . . . . . . . . . . . . . . . . . . . . 31
Cleaning and Sanitizing Procedure . . . 31
Touch Pad Operation . . . . . . . . . . . . . 32
Remove Parts for Cleaning . . . . . . . . . 36
Preventative Maintenance Cleaning . . . . 41
Ice Machine Inspection . . . . . . . . . . . . . . 42
Cleaning the Condenser . . . . . . . . . . . . . 43
Removal from Service/Winterization . . . 44
Bin Removal . . . . . . . . . . . . . . . . . . . . . . . 45

10 Part Number STH042 3/14
OPERATION
Touch Pad Features . . . . . . . . . . . . . . . . 47
On/Off . . . . . . . . . . . . . . . . . . . . . . . . . 47
Delay . . . . . . . . . . . . . . . . . . . . . . . . . 48
Clean . . . . . . . . . . . . . . . . . . . . . . . . . 48
Bin Full . . . . . . . . . . . . . . . . . . . . . . . . 49
Service . . . . . . . . . . . . . . . . . . . . . . . . 49
Ice Making Sequence of Operation . . . . 50
Control Board Timers . . . . . . . . . . . . 51
Safety Limits . . . . . . . . . . . . . . . . . . . . 52
Energized Parts Chart . . . . . . . . . . . . 54
Operational Checks . . . . . . . . . . . . . . . . . 56
Ice Thickness Check . . . . . . . . . . . . . 56
Ice Thickness Adjustment . . . . . . . . . . 56
TROUBLESHOOTING
Control Board Test Mode . . . . . . . . . . . . 57
Operating Ice Machine with bin and touch
pad removed. . . . . . . . . . . . . . . . . . . . 57
Diagnosing an Ice Machine that Will Not Run
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Ice Machine Does Not Cycle Into Harvest
when Water Loses Contact with the Harvest
Float Switch . . . . . . . . . . . . . . . . . . . . . . . 59
Ice Machine Cycles Into Harvest Before Water
loses Contact with the Harvest Float Switch
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Ice Production Check . . . . . . . . . . . . . . . 63
Installation/Visual Inspection Checklist 64
Water System Checklist . . . . . . . . . . . . . 65
Ice Formation Pattern . . . . . . . . . . . . . . . 66
Safety Limit Feature . . . . . . . . . . . . . . . . 68
Analyzing Discharge Pressure . . . . . . . . 75
Analyzing Suction Pressure . . . . . . . . . . 77
Harvest Valve . . . . . . . . . . . . . . . . . . . . . . 81
Comparing Evaporator Inlet/Outlet
Temperatures . . . . . . . . . . . . . . . . . . . . . . 85
Discharge Line Temperature Analysis . 86
Refrigeration Component Diagnostics . 88
Final Analysis . . . . . . . . . . . . . . . . . . . 90
Refrigeration Component Diagnostic Chart
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

Part Number STH042 3/14 11
COMPONENT CHECK PROCEDURES
Main Fuse . . . . . . . . . . . . . . . . . . . . . . . . . 95
Bin Switch . . . . . . . . . . . . . . . . . . . . . . . . . 96
Touch Pad . . . . . . . . . . . . . . . . . . . . . . . . . 98
Float Switch . . . . . . . . . . . . . . . . . . . . . . . 100
Compressor Electrical Diagnostics . . . . 102
Fan Cycle Control . . . . . . . . . . . . . . . . . . . 104
High Pressure Cutout (HPCO) Control . . 105
Filter-Driers . . . . . . . . . . . . . . . . . . . . . . . . 106
Refrigerant Recovery/Evacuation . . . . . . 108
Definitions . . . . . . . . . . . . . . . . . . . . . . 108
Refrigerant Re-use Policy . . . . . . . . . . 109
Recovery and Recharging Procedures 111
System Contamination Cleanup . . . . . . . 114
Determining Severity of Contamination 114
Mild System Contamination Cleanup
Procedure . . . . . . . . . . . . . . . . . . . . . . 116
Severe System Contamination Cleanup
Procedure . . . . . . . . . . . . . . . . . . . . . . 117
Replacing Pressure Controls without
Removing Refrigerant Charge . . . . . . . 118
Total System Refrigerant Charge . . . . . . 120

12 Part Number STH042 3/14
CHARTS
Cycle Times, 24 Hr. Ice Production and
Refrigerant Pressure Charts . . . . . . . . . . 121
U0140 Self-contained Air-cooled . . . . 122
U0140 Self-contained Water-cooled . . 123
U0190 Self-contained Air-cooled . . . . 124
U0240 Self-contained Air-cooled . . . . 125
U0240 Self-contained Water-cooled . . 126
U0310 Self-contained Air-cooled . . . . 127
U0310 Self-contained Water-cooled . . 128
DIAGRAMS
Wiring Diagrams . . . . . . . . . . . . . . . . . . . 129
Wiring Diagram - All Models . . . . . . . . 130
Electronic Control Board . . . . . . . . . . . 131
Tubing Schematic - U0140 . . . . . . . . . . . 132
Tubing Schematic - U0190/U0240/U0310 133

Part Number STH042 3/14 13
General Information
Model Numbers
This manual covers the following models:
Self-contained
Air-cooled
Self-contained
Water-cooled
UD0140A UD0140W
UD0140AE UD0140WE
UY0140A UY0140W
UY0140AE UY0140WE
UR0140A --
UR0140AE --
UD0190A --
UD0190AE --
UY0190A --
UY0190AE --
UR0190A --
UR0190AE --
UD0240A UD0240W
UD0240AE UD0240WE
UY0240A UY0240W
UY0240AE UY0240WE
UR0240A --
UR0240AE --
UD0310A UD0310W
UD0310AE UD0310WE
UY0310A UY0310W
UY0310AE UY0310WE
UR0310A --
UR0310AE --

14 Part Number STH042 3/14
How to Read a Model Number
!Warning
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.
A - Air-cooled
W - Water-cooled
Series Condenser
Type
Capacity
U D 0140 A E
R - Regular
D - Dice
Y - Half-dice
Cube Size
E - WRAS 50Hz

Part Number STH042 3/14 15
Ice Machine Warranty Information
Owner Warranty Registration Card
General
Warranty coverage begins the day the ice machine is
installed.
If the OWNER WARRANTY REGISTRATION CARD is
not returned, Manitowoc will use the date of sale to the
Manitowoc Distributor as the first day of warranty
coverage for your new ice machine.
Commercial Warranty Coverage
General
The following Warranty outline is provided for your
convenience. For a detailed explanation, read the
warranty bond shipped with each product.
Contact your local Manitowoc representative or
Manitowoc Ice, if you need further warranty
information.
Parts
1. Manitowoc warrants the ice machine against
defects in materials and workmanship, under
normal use and service for three (3) years from
the date of original installation.
2. The evaporator and compressor are covered by
an additional two (2) year (five years total)
warranty beginning on the date of the original
installation.
Labor
1. Labor required to repair or replace defective
components is covered for three (3) years from
the date of original installation.
2. The evaporator is covered by an additional two-
(2) year (five years total) labor warranty beginning
on the date of the original installation.
Important
Complete and mail the OWNER WARRANTY-
REGISTRATION CARD as soon as possible to
validate the installation date.

16 Part Number STH042 3/14
Exclusions
The following items are not included in the ice
machine’s warranty coverage:
1. Normal maintenance, adjustments and cleaning
as outlined in this manual.
2. Repairs due to unauthorized modifications to the
ice machine or use of non-standard parts without
prior written approval from Manitowoc Ice.
3. Damage caused by improper installation of the ice
machine, electrical supply, water supply or
drainage, or damage caused by floods, storms, or
other acts of God.
4. Premium labor rates due to holidays, overtime,
etc.; travel time; flat rate service call charges;
mileage and miscellaneous tools and material
charges not listed on the payment schedule.
Additional labor charges resulting from the
inaccessibility of equipment are also excluded.
5. Parts or assemblies subjected to misuse, abuse,
neglect or accidents.
6. Damage or problems caused by installation,
cleaning and/or maintenance procedures
inconsistent with the technical instructions
provided in this manual.
7. This warranty is intended exclusively for
commercial application. No warranty is extended
for personal, family, or household purposes.
Authorized Warranty Service
To comply with the provisions of the warranty, a
refrigeration service company qualified and authorized
by your Manitowoc distributor, or a Factory Authorized
Servicer must perform the warranty repair.
Service Calls
Normal maintenance, adjustments and cleaning as
outlined in this manual are not covered by the
warranty.

Part Number STH042 3/14 17
RESIDENTIAL WARRANTY COVERAGE
What Does this Limited Warranty Cover?
Subject to the exclusions and limitations below,
Manitowoc Ice (“Manitowoc”) warrants to the original
consumer that any new ice machine manufactured by
Manitowoc (the “Product”) shall be free of defects in
material or workmanship for the warranty period
outlined below under normal use and maintenance,
and upon proper installation and start-up in
accordance with the instruction manual supplied with
the Product.
How Long Does this Limited Warranty Last?
Who is Covered by this Limited Warranty?
This limited warranty only applies to the original
consumer of the Product and is not transferable.
What are MANITOWOC ICE’S Obligations Under
this Limited Warranty?
If a defect arises and Manitowoc receives a valid
warranty claim prior to the expiration of the warranty
period, Manitowoc shall, at its option: (1) repair the
Product at Manitowoc’s cost, including standard
straight time labor charges, (2) replace the Product
with one that is new or at least as functionally
equivalent as the original, or (3) refund the purchase
price for the Product. Replacement parts are
warranted for 90 days or the balance of the original
warranty period, whichever is longer. The foregoing
constitutes Manitowoc’s sole obligation and the
consumer’s exclusive remedy for any breach of this
limited warranty. Manitowoc’s liability under this limited
warranty is limited to the purchase price of Product.
Additional expenses including, without limitation,
service travel time, overtime or premium labor
charges, accessing or removing the Product, or
shipping are the responsibility of the consumer.
Product Covered Warranty Period
Ice Machine Twelve (12) months
from the sale date

18 Part Number STH042 3/14
What Is Not Covered?
This limited warranty does cover, and you are solely
responsible for the costs of: (1) periodic or routine
maintenance, (2) repair or replacement of the Product
or parts due to normal wear and tear, (3) defects or
damage to the Product or parts resulting from misuse,
abuse, neglect, or accidents, (4) defects or damage to
the Product or parts resulting from improper or
unauthorized alterations, modifications, or changes;
and (5) defects or damage to any Product that has not
been installed and/or maintained in accordance with
the instruction manual or technical instructions
provided by Manitowoc. To the extent that warranty
exclusions are not permitted under some state laws,
these exclusions may not apply to you.
EXCEPT AS STATED IN THE FOLLOWING SENTENCE,
THIS LIMITED WARRANTY IS THE SOLE AND EXCLUSIVE
WARRANTY OF MANITOWOC WITH REGARD TO THE
PRODUCT. ALL IMPLIED WARRANTIES ARE STRICTLY
LIMITED TO THE DURATION OF THE LIMITED
WARRANTY APPLICABLE TO THE PRODUCTS AS
STATED ABOVE, INCLUDING BUT NOT LIMITED TO, ANY
WARRANTY OF MERCHANTABILITY OR OF FITNESS
FOR A PARTICULAR PURPOSE. Some states do not
allow limitations on how long an implied warranty lasts,
so the above limitation may not apply to you.
IN NO EVENT SHALL MANITOWOC OR ANY OF ITS
AFFILIATES BE LIABLE TO THE CONSUMER OR ANY
OTHER PERSON FOR ANY INCIDENTAL,
CONSEQUENTIAL OR SPECIAL DAMAGES OF ANY KIND
(INCLUDING, WITHOUT LIMITATION, LOSS OF PROFITS,
REVENUE OR BUSINESS) ARISING FROM OR IN ANY
MANNER CONNECTED WITH THE PRODUCT, ANY
BREACH OF THIS LIMITED WARRANTY, OR ANY OTHER
CAUSE WHATSOEVER, WHETHER BASED ON
CONTRACT, TORT OR ANY OTHER THEORY OF
LIABILITY. Some states do not allow the exclusion or
limitation of incidental or consequential damages, so
the above limitation or exclusion may not apply to you.

Part Number STH042 3/14 19
How State Law Applies
This limited warranty gives you specific legal rights,
and you may also have rights that vary from state to
state or from one jurisdiction to another.
Registration Card
To secure prompt and continuing warranty service, this
warranty registration card must be completed and sent
to Manitowoc within thirty (30) days from the sale date.
Complete the following registration card and send it to
Manitowoc at the address shown above. Retain a copy
for your records.
HOW TO OBTAIN WARRANTY SERVICE
To obtain warranty service or information regarding
your Product, please contact us at:
MANITOWOC ICE
2110 S. 26th St.,
P.O. Box 1720
Manitowoc, WI 54221-1720
Telephone: [phone] Fax: [phone]
www.manitowocice.com

20 Part Number STH042 3/14
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