Manitowoc QR0670C User manual

Technician’s
Handbook
Manitowoc
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
Q Model
QuietQube®
Ice Machines
Part Number 80-0099-9 6/11

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:
Procedural Notices
As you work on Manitowoc equipment, be sure to read
the procedural notices in thishandbook. These notices
supply helpful information which may assist you as
you work.
Throughout this handbook, you will see the following
types of procedural 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.
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.

NOTE: Text set off as a Note provides you with simple,
but useful, extra information about the procedure you
are performing.
Read These Before Proceeding:
!Caution
Proper installation, care and maintenance are
essential for maximum performance and trouble-
free operation of your Manitowoc equipment. If
you encounter problems not covered by this
handbook, do not proceed, contact Manitowoc
Foodservice Group. We will be happy to provide
assistance.
Important
Routine adjustments and maintenance
procedures outlined in this handbook are not
covered by the warranty.
!Warning
PERSONAL INJURY POTENTIAL
Do not operate equipment that has been
misused, abused, neglected, damaged, or
altered/modified from that of original
manufactured specifications.
We reserve the right to make product
improvements at any time. Specifications and
design are subject to change without notice.

Table of Contents
Model Numbers
Model/Serial Number Location.............................. 2
Ice Machine Warranty Information
Owner Warranty Registration Card....................... 3
Warranty Coverage............................................... 4
General............................................................. 4
Parts................................................................. 4
Labor................................................................ 4
Exclusions ........................................................ 4
Authorized Warranty Service............................ 5
Service Calls..................................................... 5
Installation
Location of Ice Machine........................................ 6
Ice Machine Head Section 
Clearance Requirements ...................................... 6
Q0600C/Q0800C/Q1000C ............................... 6
SU1000/SerVend UC-300:............................... 6
Stacking Two Ice Machines on a 
Single Storage Bin ................................................ 7
Ice Deflector.......................................................... 7
Location of CVD®Condensing Unit....................... 8
Condensing Unit Clearance Requirements........... 8
Ice Machine Head Section Water 
Supply and Drains................................................. 9
Potable Water Supply....................................... 9
Potable Water Inlet Lines ................................. 9
Drain Connections.......................................... 10
Water cooled condenser water 
supply and drains................................................ 11
Condenser Water Supply ............................... 11
Water Cooled Condenser Lines ..................... 11
Condensing Unit Drain Connections .............. 12

Electrical Requirements.......................................13
QuietQube®Ice Machines and 
CVD®Condensing Units................................13
3 Phase Scroll Compressor Rotation..............13
Refrigeration System Installation.........................15
Usage With Non-Manitowoc 
Condensing Units ...........................................15
Factory Equipment Refrigerant Amounts........16
Refrigeration Line Set Installation...................17
3 Phase Scroll Compressor Rotation 
CVD2075 Only ....................................................29
Condensing Unit Heat of Rejection .....................29
Operational Checks
General................................................................30
Water Level .........................................................30
Q0600C/Q0800C/Q1000C/QDUAL................30
Q1400C/SU1000C.........................................31
Ice Thickness Check ...........................................32
Harvest Sequence Water Purge..........................33
Interior Cleaning and Sanitizing
AlphaSanÒ..........................................................36
Cleaning Procedure.............................................37
Sanitizing Procedure ...........................................39
Automatic Cleaning System (AuCS®) Accessory
........................................................................41
Removal of Parts for Cleaning or Sanitizing...43
Removal from Service/Winterization
General................................................................63
CVD1476 Water Cooled Condensing Unit ..........64
AuCS®Accessory...............................................64

Component Identification
Ice Machine Head Section .................................. 65
Q0600C/Q0800C/Q1000C ............................. 65
SU1000C/SerVend UC-300 Dispenser .......... 67
Q1400C.......................................................... 68
QDUAL........................................................... 69
CVD®Condensing Unit ....................................... 70
CVD0675/CVD0875/CVD1075/CVD1475...... 70
CVD1476........................................................ 71
CVD1875/CVD2075 ....................................... 72
Ice Making Sequence of Operation
Q0600C/Q0800C/Q1000C/SU1000C ................. 73
Initial Start-Up or Start-Up After 
Automatic Shut-Off......................................... 73
Freeze Sequence........................................... 74
Harvest Sequence.......................................... 75
Automatic Shut-Off......................................... 76
Q1400C............................................................... 79
Initial Start-Up or Start-Up After Automatic Shut-
Off................................................................... 79
Freeze Sequence........................................... 79
Harvest Sequence.......................................... 80
QDUAL................................................................ 84
Initial Start-Up or Start-Up After Automatic Shut-
Off................................................................... 84
Freeze Sequence........................................... 85
Harvest Sequence.......................................... 86

Electrical System
Component Specifications and Diagnostics Control
Board...................................................................91
Harvest/Safety Limit Light...............................91
Freeze Time Lock-In Feature .........................91
Maximum Freeze Time...................................91
Safety Limits...................................................91
Three-Minute Delay........................................92
Inputs..............................................................92
Control Board Relays......................................92
Main Fuse............................................................95
Function..........................................................95
Specifications..................................................95
Check Procedure............................................95
Bin Switch............................................................96
Function..........................................................96
Specifications..................................................96
Check Procedure............................................97
Ohm Test........................................................97
Water Curtain Removal Notes........................98
ICE/OFF/CLEAN Toggle Switch..........................99
Function..........................................................99
Specifications..................................................99
Check Procedure............................................99
Ice Thickness Probe (Harvest Initiation)............100
How the Probe Works...................................100
Ice Thickness Check.....................................100
Ice Thickness Probe Diagnostics..................101
Diagnosing Ice Thickness Control Circuitry..102
Water Level Control Circuitry.............................105
Diagnosing an Ice Machine Head Section 
that Will Not Run ...............................................112
Diagnosing a Condensing Unit 
that Will Not Run ...............................................113
Compressor Electrical Diagnostics....................114
Diagnosing Start Components...........................116
Electrical Diagrams............................................117
Ice Machine Head Section............................117
Condensing Unit...........................................121

Refrigeration System
Refrigeration System Diagnostics..................... 123
General......................................................... 123
Refrigeration System Operation................... 123
Ice Machine will Not Harvest Diagnostics ......... 127
Harvest Cycle Diagnostic List....................... 127
Ice Production Check........................................ 128
Installation/Visual Inspection Checklist......... 129
Water System Checklist............................... 130
Ice Formation Pattern................................... 131
Evaporator Tubing Routing........................... 131
Safety Limits................................................. 134
Analyzing Suction Pressure.......................... 142
Cool Vapor Valve .............................................. 146
Normal Operation......................................... 146
Cool Vapor Valve Analysis........................... 147
Freeze Cycle Suction Line Temperature Analysis
..................................................................... 148
Refrigeration Component Diagnostic Charts..... 150
General......................................................... 150
Procedure..................................................... 150
Final Analysis ............................................... 150
Refrigeration Component Diagnostic Charts..... 152
Single Expansion Valve – Q0600C/0800C/
Q1000C/SU1000C........................................ 152
Dual Expansion Valve – Q1400C/QDUAL.... 157
Pressure Control Specifications 
and Diagnostics................................................. 160
Headmaster Control Valve ........................... 160
Water Regulating Valve................................ 170
Fan Cycle Control......................................... 171
High Pressure Cutout (HPCO) Control......... 172
Low Pressure Cutout (LPCO) Control.......... 173
QuietQube®Tubing Schematics........................ 174
Q0600C/Q0800C/Q1000C ........................... 174
Q1400C/QDUALC........................................ 175

Cycle Times/24-Hour Ice Production/Refrigerant
Pressure Charts
Q0600C/CVD675 Series Remote Air Cooled....177
Q0800C/CVD875 Series Remote Air Cooled....178
Q1000C/CVD1075 Series Remote Air Cooled..179
SU1000C/SerVend UC-300 Dispenser/CVD1075
Remote Air Cooled............................................180
Q1400C/CVD1475 Series Remote Air Cooled..181
Q1400C/CVD1476 Remote water Cooled.........182
QDUAL/CVD1875 Remote Air Cooled..............183
QDUAL/CVD2075 Remote air Cooled...............184
Refrigerant Recovery/Evacuation
System Contamination Cleanup........................188
General.........................................................188
Determining Severity of Contamination........188
Cleanup Procedure.......................................190
Replacing Pressure Controls Without Removing
Refrigerant Charge............................................193
Filter-Driers........................................................195
Liquid Line Filter-Drier ..................................195
Suction Line Filter.........................................196
Total System Refrigerant Charge......................197
Refrigerant Oil ...................................................198
Refrigerant Definitions.......................................199
Refrigerant Reuse Policy...................................200

–1–
Model Numbers
This manual covers the following models:
Ice Machine Head
Section CVD®Condensing Unit*
QR0670C
QD0672C
QY0674C CVD0675
QR0870C
QD0872C
QY0874C CVD0875
QR1070C
QD1072C
QY1074C CVD1075
CVD1285
SU1024YC/SerVend
UC-300 Dispenser CVD1075
QR1470C
QD1472C
QY1474C
CVD1375
CVD1475
CVD1476
QRDUALC
QDDUALC
QYDUALC CVD1875
CVD2075
*For 3 phase electrical option: add the number “3” 
to end of model number (CVD10753).
Important
The ice machine sequence of operation for
QuietQube®Ice Machines will differ. Verify the
correct sequence of operation is being followed for
the model you are working on.

–2–
MODEL/SERIAL NUMBER LOCATION
These numbers are required when requesting
information from your local Manitowoc Distributor,
service representative, or Manitowoc Ice, Inc. The
model and serial number are listed on the OWNER
WARRANTY REGISTRATION CARD. They are also
listed on the MODEL/SERIAL NUMBER DECAL
affixed to the ice machine.
!
Warning
Manitowoc QuietQube®Ice Machines require the ice
storage bin to incorporate an ice deflector, when
installing with non-Manitowoc ice storage systems or
Manitowoc F style bins.
Prior to using a non-Manitowoc ice storage system
with Manitowoc ice machines, contact the
manufacturer to assure their ice deflector is
compatible with Manitowoc ice machines.

–3–
Ice Machine Warranty Information
OWNER WARRANTY REGISTRATION CARD
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.
Important
Complete and mail the OWNER WARRANTY
REGISTRATION CARD as soon as possible to
validate the installation date.

–4–
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, Inc. 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.
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, Inc.
Important
This product is intended exclusively for commercial
application. No warranty is extended for personal,
family, or household purposes.

–5–
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.
This product 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 Contracted Service
Representative must perform the warranty repair.
NOTE: If the dealer you purchased the ice machine
from is not authorized to perform warranty service,
contact your Manitowoc Distributor or Manitowoc Ice,
Inc. for the name of the nearest authorized service
representative.
Service Calls
Normal maintenance, adjustments and cleaning as
outlined in this manual are not covered by the
warranty. If you have followed the procedures listed in
this manual, and the ice machine still does not perform
properly, call your Local Distributor or the Service
Department at Manitowoc Ice, Inc.

–6–
Installation
LOCATION OF ICE MACHINE
The location selected for the ice machine head section
must meet the following criteria. If any of these criteria
are not met, select another location.
The location must be free of airborne and other
contaminants.
The air temperature must be at least 35°F (1.6°C),
but must not exceed 110°F (43.4°C).
The location must not be near heat-generating
equipment or in direct sunlight.
ICE MACHINE HEAD SECTION CLEARANCE
REQUIREMENTS
Q0600C/Q0800C/Q1000C
Top/Sides
There is no minimum clearance required, although
5 in. (127 mm) is recommended for efficient operation
and servicing only.
Back
1 in. (25 mm) required when routing electrical inlet,
water inlet and refrigeration tubing out of the top of the
unit.
5 in. (127 mm) required when routing all connections
out the back.
SU1000/SerVend UC-300:
Top
40 in. (100 mm) required for cleaning procedures and
servicing.
Back
12 in. (30.5cm) required for cleaning procedures and
servicing.

–7–
STACKING TWO ICE MACHINES ON A 
SINGLE STORAGE BIN
Q0600C/Q0800C/Q1000C Ice Machines:
A stacking kit is required for stacking two ice
machines. Installation instructions are supplied with
the stacking kit.
Q1400C/QDUAL Ice Machines: 
Q1400C and QDUAL ice machines cannot be stacked.
However two Q1400C/QDUAL ice machines can be
placed side by side on a 60 in. Manitowoc F style bin.
ICE DEFLECTOR
QDUAL ice machines mounted on an ice dispenser do
not require an ice deflector.
QDUAL ice machines mounted on an ice storage bin
(Manitowoc or non-Manitowoc) require the use of an
ice deflector. Refer to sales literature to determine the
proper kit for your application. This kit is necessary to
allow access to the shut-off valves during installation
and will improve access during future service.
An ice deflector is required for all ice machines
installed on a bin.

–8–
LOCATION OF CVD®CONDENSING UNIT
The location selected for the CVD®Condensing Unit
must meet the following criteria. If any of these criteria
are not met, select another location.
The air temperature must be at least -20°F
(-28.9°C), but must not exceed 130°F (54.4°C)
-20°F (-28.9°C) to 120°F (54.4°C) QDUAL
CVD1875/CVD2075).
CVD1476 only - The air temperature must be at
least 50°F (10°C) but must not exceed 110°F
(43°C).
The location must not allow exhaust fan heat and/or
grease to enter the condenser.
The location must not obstruct airflow through or
around the condensing unit.
CONDENSING UNIT CLEARANCE
REQUIREMENTS
Top/Sides
There is no minimum clearance required, although
6 in. (152 mm) is recommended for efficient operation
and servicing only.
Front/Back
4 ft. (122 cm)

–9–
ICE MACHINE HEAD SECTION WATER 
SUPPLY AND DRAINS
Potable Water Supply
Local water conditions may require treatment of the
water to inhibit scale formation, filter sediment, and
remove chlorine odor and taste.
Potable Water Inlet Lines
Follow these guidelines to install water inlet lines:
Do not connect the ice machine to a hot water
supply. Be sure all hot water restrictors installed for
other equipment are working. (Check valves on sink
faucets, dishwashers, etc.)
If water pressure exceeds the maximum
recommended pressure obtain a water pressure
regulator from your Manitowoc Distributor.
Float Valve - 80 psi (551.5 kPa)
Water Inlet Valve - 90 psi (620.4 kPA)
Install a water shut-off valve for ice making potable
water.
Insulate water inlet lines to prevent condensation.
Important
If you are installing a Manitowoc water filter system,
refer to the Installation Instructions supplied with the
filter system for ice making water inlet connections.

–10–
Drain Connections
Follow these guidelines when installing drain lines to
prevent drain water from flowing back into the ice
machine and storage bin:
Drain lines must have a 1.5 in. drop per 5 ft. of run
(2.5 cm per meter), and must not create traps.
The floor drain must be large enough to
accommodate drainage from all drains.
Run separate bin and ice machine drain lines.
Insulate them to prevent condensation.
Vent the bin and ice machine drain to the
atmosphere.
Drains must have a union or other suitable means of
disconnection from the ice machine when servicing
is required.
The SU1024YC is designed for installation on a
SerVend UC-300 dispenser only. Refer to the
SerVend UC-300 Installation, Use and Care Manual
for additional drain requirements.