As you work on a Flake / Chiplet Series Ice Machine, be
sure to pay close attention to the safety notices in this
manual. Disregarding the notices may lead to serious
injury and/or damage to the ice machine.
Throughout this manual, you will see the following types
of safety notices:
!
Warning
PERSONAL INJURY POTENTIAL
Do not operate equipment that has been misused,
abused, neglected, damaged, or altered/modified
from that of original manufactured specifications.
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 ice machine. Be sure
to read the Caution statement before proceeding,
and work carefully.
As you work on a Flake / Chiplet Series Ice Machine, be
sure to read the procedural notices in this manual.
These notices supply helpful information which may
assist you as you work.
Throughout this manual, you will see the following types
of procedural notices:
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 ice production and troublefree operation of you Manitowoc Ice Machine.
Read and understand this manual. It contains
valuable care and maintenance information. If you
encounter problems not covered by this manual, do
not proceed, contact Manitowoc Ice, Inc. We will be
happy to provide assistance.
Important
Routine adjustments and maintenance procedures
outlined in this manual are not covered by the
warranty.
We reserve the right to make product improvements at any time.
Specifications and design are subject to change without notice.
Do not operate equipment that has been misused,
abused, neglected, damaged, or altered/modified
from that of original manufactured specifications.
How to Read a Model Number
9 REMOTE
AIR-COOLED
# CUBE SIZE
6 FLAKE
7 FLAKE
8 CHIPLET
9 CHIPLET
CONDENSER TYPE
AIR-COOLED
WATER-COOLED
AIR-COOLED
WATER-COOLED
Accessories
BIN CASTER
Replaces standard legs.
ICE BAGGER
Maximize profits from bagged ice sales with this
convenient accessory. This sturdy unit rests on the bin
door frame, and adapts for left or right side filling.
ARCTIC PURE™ WATER FILTER SYSTEM
Engineered specifically for Manitowoc ice machines,
This water filter is an efficient, dependable, and
affordable method of inhibiting scale formation, filtering
sediment, and removing chlorine taste and odor.
MANITOWOC CLEANER AND SANITIZER
Manitowoc Ice Machine Cleaner and Sanitizer are
available in convenient 16 oz. (473 ml) and 1 gal (3.78 l)
bottles. These are the only cleaner and sanitizer
approved for use with Manitowoc products.
Cleaner Part NumberSanitizer Part Number
16 oz. 94-0456-3 16 oz. 94-0565-3
1 gallon 94-0580-3 1 gallon 94-0581-3
NOTE: The Manitowoc Automatic Cleaning System
(AuCS) accessory cannot be used with Flake/Chiplet Ice
Machines.
Remote Condensing Unit
Part No. 80-1214-31-1
ICE MACHINE
MODEL
ICE CUBE SIZE
F FLAKE
C CHIPLET
CONDENSING
UNIT MODEL
Q F 0807 W
ICE MACHINE
SERIES
CONDENSER TYPE
A SELF-CONTAINED AIR-COOLED
W SELF-CONTAINED WATER-COOLE
N REMOTE AIR-COOLED
RFC 2385
CONDENSIN
UNIT SERIES
SV3106
SV3107
General InformationSection 1
Revised 8/2003
Model/Serial Number Location
These numbers are required when requesting
information from your local Manitowoc distributor,
service representative, or Manitowoc Ice, Inc.
SV2019
(QF800/QC700/QF2200/
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 head section and condensing unit.
Both model/serial numbers must be referenced to obtain
warranty or service information.
MODEL / SERIAL
NUMBERS DECAL
QF2300)
1-2
MODEL / SERIAL
NUMBERS DECAL
(QF400)
SV2047
Model/Serial Number Location
Part No. 80-1214-3
Section 1General Information
Revised 8/2003
Owner Warranty Registration Card
GENERAL
Warranty coverage begins the day the ice machine is
installed.
Important
Complete and mail the OWNER WARRANTY
REGISTRATION CARD as soon as possible to
validate the installation date.
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.
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 Distributor or Manitowoc
Ice, Inc. if you need further warranty information.
Important
This product is intended exclusively for commercial
application. No warranty is extended for personal,
family, or household purposes.
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.
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 product is intended exclusively for commercial
application. No warranty is extended for personal,
family, or household purposes.
PARTS
1. Manitowoc warrants the ice machine against defects
in materials and workmanship, under normal use
and service for two (2) years from the date of original
installation.
2. The compressor is covered by an additional three
(3) 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 two (2) years from the
date of original installation.
Part No. 80-1214-31-3
General InformationSection 1
Revised 8/2003
THIS PAGE INTENTIONALLY LEFT BLANK
1-4
Part No. 80-1214-3
Ice Machine Dimensions
Revised 8/2003
Section 2
Installation Instructions
QF400 AIR COOLED ICE MACHINE
19”
(48.2 CM)
(82.55 CM)
3.03”
(7.7 CM)
(15.24 CM)
26.5”
(67.3 CM)
26”
(66 CM)
1.36”
(3.5 CM)
(18.2 CM)
3.04”
(7.72 CM)
7.2”
Important
Failure to follow these installation guidelines may
affect warranty coverage.
32.5”
6”
SV2050
QC700/QF800 AIR COOLED ICE MACHINE
22”
(55.88 CM)
5.9”
(15 CM)
2.9”
(7.3 CM)
1.6”
(4 CM)
3”
(7.6 CM)
(62.23 CM)
24.5”
26.5”
(67.3 CM)
SV2003
QC700/QF800 WATER COOLED ICE MACHINE
11.13”
(28.3 CM)
5.6”
(14.3 CM)
1.9”
(4.8 CM)
2”
(5.1 CM)
13.5”
(34.3 CM)
11.5”
(29.2 CM)
26.5”
(67.3 CM)
SV2004
Part No. 80-1214-32-1
Installation InstructionsSection 2
Revised 8/2003
Ice Machine Head Section and Remote Condensing Unit Dimensions
QF2200/QF2300 AND RFC2085/RFC2385 REMOTE CONDENSING UNIT
30”
(76.2 CM)
2.8”
(7.12 CM)
1.8”
(4.6 CM)
9.8”
(24.89 CM)
24.5”
(62.23 CM)
2.25”
(5.72 CM)
4.5”
(11.43 CM)
23.5”
(67.3 CM)
SV1784
25.75”
14.5”
(36.8 CM)
34”
(86.4 CM)
14.5”
(36.8 CM)
9.5”
(24.1 CM)
10.75”
(27.3 CM)
24.13”
(53.7 CM)
SV1758
2-2
Part No. 80-1214-3
Section 2Installation Instructions
Revised 8/2003
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 free of airborne and other
contaminants.
•The air temperature must be at least 45°F (7°C), but
must not exceed 110°F (43.4°C).
•The water temperature must be at least 45°F (7°C),
but must not exceed 90°F (32.2°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. QF400 airflow is in and out
of the front of the ice machine. Refer to below for
clearance requirements.
Ice Machine Head Section Clearance
Requirements
QF400
Top/Sides5” (12.7 mm)NA
Back5” (12.7 mm)NA
QC700/QF800
Top/Sides8” (20.3 mm)5” (12.7 mm)
Back5” (12.7 mm)5” (12.7 mm)
QF2200/QF2300
Top/Sides8” (20.3 mm)5” (12.7 mm)
Back5” (12.7 mm)5” (12.7 mm)
Self-Contained
Air-Cooled
Self-Contained
Air-Cooled
Self-Contained
Air-Cooled
Self-Contained
Water-Cooled
Self-Contained
Water-Cooled
Remote
Air-Cooled
Ice Machine Heat of Rejection
Series
Condensing Unit
QF4004000
QF7007800
QF8007800
QF2200/RFC208521000
QF2300/RFC238521000
*B.T.U. / Hour
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
the air conditioning equipment where self-contained aircooled ice machines are installed. QF2200/QF2300 ice
machines add an insignificant amount of load to a
conditioned space.
Heat of Rejection*
Location of Remote Condensing Unit
The location selected for the Remote 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 120°F (49°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. Refer to the chart below
for clearance requirements.
CONDENSING UNIT CLEARANCE REQUIREMENTS
Ice Machine Condensing Unit
Top/SidesThere is no minimum clearance required,
although 6” (12.7 cm) is recommended for
efficient operation and servicing only.
Front/Back4’ (1.2)
Part No. 80-1214-32-3
Caution
!
The ice machine head section 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. See
“Removal from Service/Winterization”.
Installation InstructionsSection 2
Revised 8/2003
Leveling the Ice Storage Bin
1. Screw the leveling legs onto the bottom of the bin.
2. Screw the foot of each leg in as far as possible.
Caution
!
The legs must be screwed in tightly to prevent them
from bending.
3. Move the bin into its final position.
4. Level the bin to assure that the bin door closes and
seals properly. Use a level on top of the bin. Turn
each foot as necessary to level the bin.
NOTE: An optional caster assembly is available for use
in place of the legs. Installation instructions are supplied
with the casters.
Condenser Air Baffle
(QC700/QF800 Air-Cooled Ice Machines Only)
The air-cooled baffle prevents condenser air from
recirculating. To install:
1. Remove the back panel screws next to the
condenser.
2. Align the mounting holes in the air baffle with the
screw holes and reinstall the screws.
SCREWS
AIR
BAFFLE
THREAD ‘FOOT’ IN AS
FAR AS POSSIBLE
Leveling Leg and Foot
THREAD LEVELING
LEG INTO BASE OF
CABINET
SV1606
SV1607
Air Baffle
2-4
Part No. 80-1214-3
Section 2Installation Instructions
Revised 8/2003
Electrical Service
GENERAL
Warning
!
All wiring must conform to local, state and national
codes.
VOLT AG E
The maximum allowable voltage variation is ±10% of the
rated voltage on the ice machine model/serial number
plate at start-up (when the electrical load is highest).
Warning
!
The ice machine must be grounded in accordance
with national and local electrical codes.
FUSE/CIRCUIT BREAKER
A separate fuse/circuit breaker must be provided for
each ice machine. Circuit breakers must be H.A.C.R.
rated (does not apply in Canada).
QF400 115/60/1 ice machines are factory pre-wired
with a power cord and 5-15P plug confirmation.
QF400 230/50/1 ice machines are factory pre-wired
with a power cord, no plug is supplied.
QF2200/QF2300 with Remote Condensing Unit the
ice machine head section and remote condensing unit
are wired independent of each other. A separate
dedicated fuse/circuit breaker must be provided
section. Circuit breakers must be H.A.C.R. rated (does
not apply in Canada).
MINIMUM CIRCUIT AMPACITY
QC700/QF800/QF2200/QF2300 Only
The minimum circuit ampacity is used to help select the
wire size of the electrical supply. (Minimum circuit
ampacity is not the ice machine’s running amp load.)
The wire size (or gauge) is also dependent upon
location, materials used, length of run, etc., so it must be
determined by a qualified electrician.
for each
Part No. 80-1214-32-5
Installation InstructionsSection 2
Revised 8/2003
Electrical Requirements
Ice Machine Head Section
Fuse/
Circuit
Remote
Air-Cooled
Minimum
Circuit
Amps
Water Cooled
Maximum
Fuse/Circuit
Breaker
Minimum
Circuit
Amps
Air-Cooled
Ice
Machine
QF400
QC700
QF800
QF2200
QF2300
Interconnecting wiring (115/60/1) is required between the ice machine and condensing unit to energize the contactor coil.
* Indicates preliminary data
As the colours of the wires in the mains lead of the appliance may not correspond with the coloured markings
identifying the terminals in your plug, proceed as follows:
•The wire which is coloured green and yellow
the letter E or by the earth ground symbol or coloured green or green and yellow.
•The wire coloured blue
•The wire coloured brown
must be connected to the terminal which is marked with the letter N or coloured black.
must be connected to the terminal which is marked with the letter L or coloured red.
must be connected to the terminal in the plug which is marked with
2-6
Part No. 80-1214-3
Section 2Installation Instructions
Revised 8/2003
Ice Machine Head Section Electrical Wiring Connections
QF2200 ICE MACHINE HEAD SECTION
!
Warning
These diagrams are not intended to show proper
wire routing, wire sizing, disconnects, etc., only the
correct wire connections.
All electrical work, including wire routing and
grounding, must conform to local, state and national
electrical codes.
Though wire nuts are shown in the drawings, the ice
machine field wiring connections may use either
wire nuts or screw terminals.
QC700/QF800 ICE MACHINE HEAD SECTION
115/1/60 or 208-230/1/60
115/60/1
ICE MACHINE
CONNECTIONS
N = 115V
GROUND
L
1
TO FUSE/BREAKER.
DISCONNECT ALL
LINE VOLTAGE DO
NOT DISCONNECT
GROUND.
L
N = 115V
GROUND
1
230/1/50
L
1
GROUND
L
1
N
GROUND
ICE MACHINE
CONNECTIONS
N=115V
OR
L2=208-230V
GROUND
GROUND
L
1
SV1258
L
1
N
QF2300 ICE MACHINE HEAD SECTION
115/60/1
ICE MACHINE
CONNECTIONS
N = 115V
C
1
C
2
L
1
GROUND
CONDENSING UNIT
CONNECTIONS
C
1
C
2
L
1
N = 115V
GROUND
TO FUSE/BREAKER.
DISCONNECT ALL
LINE VOLTAGE DO
NOT DISCONNECT
GROUND.
Part No. 80-1214-32-7
ICE MACHINE
CONNECTIONS
TO SEPARATE
FUSE/BREAKER.
DISCONNECT ALL
POLES.
SV1191
Installation InstructionsSection 2
Revised 8/2003
Remote Electrical Wiring Connections
!
Warning
These diagrams are not intended to show proper
wire routing, wire sizing, disconnects, etc., only the
correct wire connections.
All electrical work, including wire routing and
grounding, must conform to local, state and national
electrical codes.
Though wire nuts are shown in the drawings, the ice
machine field wiring connections may use either
wire nuts or screw terminals.
RFC2085 REMOTE CONDENSING UNIT
208-230/1/60
CONDENSING UNIT
CONNECTIONS
L
1
RFC2385 REMOTE CONDENSING UNIT
208-230/1/60
CONDENSING UNIT
CONNECTIONS
C
1
C
2
L
1
L
2
GROUND
L
1
ICE MACHINE
CONNECTIONS
C
1
C
2
L
1
L
2
GROUND
TO FUSE/BREAKER.
DISCONNECT ALL
LINE VOLTAGE DO
NOT DISCONNECT
GROUND.
L
2
GROUND
L
2
GROUND
TO FUSE/BREAKER.
DISCONNECT ALL
LINE VOLTAGE DO
NOT DISCONNECT
GROUND.
2-8
Part No. 80-1214-3
Section 2Installation Instructions
Revised 8/2003
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.
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.
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 (80 psig
551.5 kPA) recommended pressure, obtain a water
pressure regulator from your Manitowoc distributor.
•Install a water shut-off valve and union for both the
ice making and condenser water lines.
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 inch drop per 5 feet 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 water-cooled condenser drain
lines. Insulate them to prevent condensation.
•Vent the bin and ice machine drain to the
atmosphere. The ice machine drain requires an 18”
vent. Do not vent the condenser drain on watercooled models.
•Drains must have a union or other suitable means to
allow in place disconnection from the ice machine
when servicing is required.
•Insulate water inlet lines and drain lines to prevent
condensation.
Cooling Tower Applications
(Water-Cooled Models)
A water cooling tower installation does not require
modification of the ice machine. The water regulator
valve for the condenser continues to control the
refrigeration discharge pressure.
It is necessary to know the amount of heat rejection, and
the pressure drop through the condenser and water
valves (inlet and outlet) when using a cooling tower on
an ice machine.
•Water entering the condenser must not exceed 90°F
(32.2°C).
•Water flow through the condenser must not exceed 5
gallons (19 liters) per minute.
•Allow for a pressure drop of 7 psi (48 kPA) between
the condenser water inlet and the outlet of the ice
machine.
•Water exiting the condenser must not exceed 110°F
(43.3°C).
Manitowoc Condensing Units are specifically designed
for usage with a Manitowoc Flake/Chiplet Ice Machine
Head Sections. Manitowoc Flake/Chiplet Ice Machines
will not operate with non-Manitowoc condensing units.
Installation of a Remote Condensing Unit may require
the use of special equipment for placement. Trained
and qualified personnel are required for proper
rigging and lifting.
The 60-month compressor warranty (including the 24month labor replacement warranty) will not apply if
the Manitowoc Ice Machine and remote Manitowoc
Condensing Unit are not installed according to
specifications. This warranty also will not apply if the
refrigeration system is modified with a condenser,
heat reclaim device, or other parts or assemblies not
manufactured by Manitowoc Ice, Inc.
Remote Single
Condenser
RFC2085
RFC2385
3/4 inch
(19.1 mm)
!
!
Circuit
(12.7 mm)
Warning
Caution
1/2 inch
Line Set*
RC-20
RC-30
RC-50
Insulation
Thickness
1/2”(13mm)
Suction Line
1/4” (7mm)
Liquid Line
Factory Equipment Refrigeration Amounts
ICE MACHINE HEAD SECTION
Each ice machine head section ships from the factory
with a R-404A refrigerant charge appropriate for line
sets up to 50’ in length (12.5 lbs.). The serial tag on the
ice machine indicates the refrigerant charge. Additional
refrigerant must be added for line set lengths between
50’ and 100’ (1.5 lbs.).
Caution
!
Never add more than nameplate charge to the
refrigeration system for any application.
!
Warning
Potential Personal Injury Situation
The ice machine head section contains the refrigerant
charge. Installation and brazing of the line sets must be
performed by a properly trained and EPA certified
refrigeration technician aware of the dangers of dealingwith refrigerant charged equipment.
REMOTE CONDENSING UNIT
Each condensing unit ships from the factory pressurized
with 50/50 nitrogen helium mixture that must be removed
during the installation process (approximately 20 psig).
REFRIGERATION LINE SETS/TRAPS KIT
Refrigeration Rated Tubing and Trap Kits are shipped
capped with atmospheric pressure.
Part No. 80-1214-32-11
Installation InstructionsSection 2
Revised 8/2003
Refrigeration Line Set Installation
GENERAL
Refrigeration line set installations consist of vertical and
horizontal line set distances between the ice machine
and the condensing unit. The following guidelines,
drawings and calculation methods must be followed to
assure proper oil return and condensing unit/ice
machine operation
!
Warning
The following instructions are provided as a general
overview of a typical installation. Refer to the
Installation, Use and Care Manual for step by step
installation instructions.
!
Warning
Disconnect electrical power to the ice machine head
section and the remote condensing unit before
proceeding.
!
Warning
The ice machine head section contains refrigerant
charge. The ice machine head section contains three
(3) refrigeration valves that must remain closed until
proper installation of the line set is completed.
A. LINE SET LENGTH
100 feet (30.5 m) Length: The maximum measured
length the line set can be.
The receiver is designed to hold a charge sufficient to
operate the ice machine in ambient temperatures
between -20°F (-28.9°C) and 120°F (49°C), with line set
lengths of up to 100 feet (30.5 m).
Important
The ice machines will not function with line sets
greater than 100 feet (30.5 m). Do not attempt to go
beyond this distance and add refrigerant charge to
compensate!
B. LINE SET RISE OR DROP
35’ (10.7 M)
MAX.
DISTANCE
Step 1 Verify Ice Machine and Remote Condensing
Unit Locations Are Within Guidelines.
Prior to installation of the ice machine head section and
remote condensing unit be sure that the distance
between then is within the line set routing guidelines
outlined in this manual.
Roof/Wall Penetration
If required, cut a 3-inch (76.2 mm) circular hole in the
wall or roof for routing of refrigeration tubing. A qualified
person must perform all roof penetrations.
Step 2 Route Refrigeration Tubing
Properly route refrigeration tubing between the ice
machine head section and the remote condensing unit.
SV1751
35 feet (10.7 m) Rise: The maximum distance the
remote condensing unit can be above the ice machine.
15’ (4.5 M)
MAX.
DISTANCE
SV1750
15 feet (4.5 m) Drop: The maximum distance the
remote condensing unit can be below the ice machine.
2-12
Part No. 80-1214-3
Section 2Installation Instructions
Revised 8/2003
C. SUCTION LINE OIL TRAPS
Caution
!
Do not form unwanted traps in refrigeration lines.
Never coil excess refrigeration tubing.
0 to 20 feet (0 to 6.1 m) Rise: The ice machine head
section has one oil trap built in which allows for a
maximum condenser rise of 20 feet (6.1 m) without
additional traps in the suction line.
21 to 35 feet (6.4 to 10.7 m) Rise: The suction line
requires an additional Oil Trap (“S” type) to be installed.
Install the trap as close as possible to midpoint between
the ice machine head section and remote condensing
unit. S-Trap Kits are available from Manitowoc (refer to
chart).
21’ OR MORE
RISE
ADDITIONAL
TRAP KIT
REQUIRED
Service Loop
A service loop in the line set permits easy access to the
ice machine for cleaning and service.
•The supplied service loop is an installation
requirement.
•A service loop is not considered an oil trap.
•The service loop is not included when calculating
length, rise or drop of the tubing run.
•Do not use hard rigid copper for the service loop.
Caution
!
If a line set has a rise followed by a drop, another rise
cannot be made. Likewise, if a line set has a drop
followed by a rise, another drop cannot be made.
Step 3 Lengthening or Reducing Line Set Lengths
Caution
!
Do not form unwanted traps in refrigeration lines.
Never coil excess refrigeration tubing.
When the line set required shortening or lengthening, do
so before connecting the line set to the ice machine
head section or the remote condensing unit.
Manitowoc S-Trap Kit
Model
QF2200
QF2300
S-Trap Kit
Number
K00166
Continued on Next Page...
SV1751
SV1760
Tu b in g Si ze
3/4 inch
(19.1 mm)
Part No. 80-1214-32-13
Installation InstructionsSection 2
Revised 8/2003
Step 4 Connecting the line set.
To prevent oxidation of the copper, purge line set and
condensing unit with dry nitrogen while brazing.
Connect The Line Set To The Ice Machine Head
Section
!
Warning
The ice machine head section contains refrigerant
charge. The ice machine head section contains three
(3) refrigeration valves that must remain closed until
proper installation of the line sets is completed.
The line set shut off valves at the back of the ice
machine must remain closed and be protected from heat
during the brazing process. Wrap the valves in a wet rag
or other type of heat sink prior to brazing. Cool braze
joint with water immediately after brazing to prevent heat
migration to the valve.
Connect The Line Set To The Remote Condensing
Unit
The compressor oil rapidly absorbs moisture. Be
prepared to complete line set installation and start your
evacuation process in order to minimize the time the
compressor is exposed to the atmosphere. (Maximum
amount of time the system can be exposed to the
atmosphere is 15 minutes).
The line set can be routed for entry through the front or
left side of the condensing unit.
•Remove knockout for preferred location.
•Insert supplied plastic bushings in knockout holes to
prevent tubing from contacting sheet metal.
•Use the supplied 90° elbows to route tubing.
•Cut the tubing ends of the suction and liquid lines
and braze the line sets to the condensing unit.
SUCTION
FILTER
VALVES MUST REMAIN
CLOSED AND BE
PROTECTED FROM
HEAT WHEN BRAZING
(WRAP WITH WET RAG)
SV1757
Warning
!
The condensing unit ships from the factory
pressurized with a 50/50 mixture of nitrogen/helium.
Bleed off pressure from both suction and liquid line
access ports prior to cutting into refrigeration lines.
SUCTION
LINE
MINIMIZE THE TIME THE REFRIGERATION
SYSTEM IS EXPOSED TO THE ATMOSPHERE
(15 MINUTES MAXIMUM)
SV2100
2-14
Part No. 80-1214-3
Section 2Installation Instructions
Revised 8/2003
Step 5 Pressure Test and Evacuate The Line Set
and Remote Condensing Unit
Schrader valve core removal tools that allow for removal
and installation of the valve cores without removing
manifold gauge set hoses are recommended to
decrease the evacuation time.
Leave the line set shut off valves closed (front seated).
Pressure test the line sets and remote condensing unit
with 150 psig of dry nitrogen. Add nitrogen at the line set
shut off valves located at the back of the ice machine.
Complete the pressure test, verify no leaks are present
and remove the nitrogen from the system before
connecting the vacuum pump. Connect a vacuum pump
to both of the line set shut off valves located at the back
of the ice machine head section. Evacuate to 500
microns (or less). To completely evacuate the Remote
condensing unit, continue the evacuation for 30 minutes
after reaching the 500 micron point.
CONNECT
VACUUM PUMP TO
LINE SET SHUT
OFF VALVES
Step 6 Open The Valves Prior To Starting The Ice
Machine.
A. Slowly backseat (open-turn counterclockwise)
the suction line shut off valve.
B. Slowly backseat (open-turn counterclockwise)
the liquid line shut off valve.
C. Slowly backseat (open-turn counterclockwise)
the receiver service valve.
SV1757
If required, the line set and condensing unit can be
evacuated from the schrader valves located in the
remote condensing unit. Schrader valve core removal
tools (that allow for putting the cores back in without
removing vacuum pump hoses) must be used if
evacuating from the condensing unit side.
Isolate the vacuum pump from the line set shut off valves
and/or condensing unit access ports prior to proceeding.
Open refrigeration system shut off valves.
The suction line, liquid line and receiver service valves
are closed during shipment and installation.
ALTERNATE CONNECTIONS AT
CONDENSING UNIT SCHRADER VALVES
USE ALLEN WRENCH TO OPEN
(TURN COUNTERCLOCKWISE)
LIQUID AND SUCTION LINE
SHUT-OFF VALVES
OPEN SUCTION AND LIQUID LINE SHUT OFF VALVES
SV1784
Part No. 80-1214-32-15
SV2100
Installation InstructionsSection 2
Revised 8/2003
Verify O-ring in schrader valve caps are intact and
reinstall on shut off valves to prevent refrigerant leakage.
Replace shut off valve access caps and torque to the
following specifications.
Torque Value’s
Stem18-20 ft. lbs.
Caps12-15 ft. lbs.
Schrader Core1.5-3 in. lbs.
Replace cap on receiver service valve and tighten.
TURN
COUNTERCLOCKWISE
RECEIVER SERVICE VALVE CAP
(TURN COUNTERCLOCKWISE
TO REMOVE)
SV1756
Open Receiver Service Valve
There is a liquid line solenoid valve at the outlet of the
receiver; refrigerant will not flow to the condensing unit
until the ice machine head section is started. Connect
power to both the ice machine head section and the
Remote condensing unit. Place the ICE/OFF/CLEAN
toggle switch into the ICE position, this will allow
refrigerant to enter the line set and condensing unit.
Important
All refrigeration valve caps must be reinstalled to
prevent future refrigeration leaks.
Step 7 Leak Check The Refrigeration System
Leak check the new line set connections at the ice
machine head section, condensing unit and S trap as
well as all factory joints throughout the entire system.
Disconnect power to the remote condensing unit. Place
the ICE/OFF/CLEAN toggle switch into the ICE position.
This allows the low side and high side pressures to
equalize. Place the ICE/OFF/CLEAN toggle switch in the
OFF position. Connect power to the remote condensing
unit and allow system to pump down.
Step 8 Insulation Requirements
To prevent condensation the entire suction line including
the shut-off valve must be insulated. All insulation must
be airtight and sealed at both ends.
The following insulation requirements prevent
condensation at 90°F (32.2°C) ambient 70% Relative
Humidity. If higher humidity is expected, increase
insulation thickness.
The entire line set, including the suction service valve
located on the back of the ice machine requires:
Suction LineLiquid Line
3/4 inch
(19.1 mm)
1/2 inch
(12.7 mm)
Min. Insulation
Thickness
1/2”(13mm)
Suction Line
1/4” (7mm)
Liquid Line
Important
To prevent condensation the entire suction line
including the shut off valve must be insulated. All
insulation must be airtight and sealed at both ends.
The minimum requirements are for conditions at or
below 70% humidity and 90°F (32.2°C) ambient.
When higher humidity will be experienced, insulation
wall thickness will need to be increased.
2-16
Part No. 80-1214-3
Section 2Installation Instructions
Revised 8/2003
Suction Shut Off Valve Insulation
The pre-formed suction shut-off valve insulation is
located in the plastic bag taped to the water curtain.
A. Verify valve and schrader caps are tightened to
specifications (see Step 6).
PRE-FORMED
INSULATION
TIGHTEN VALVE CAPS TO
SPECIFICATIONS
SV3084
B. Place insulation over schrader valve cap and left
side of valve. Position the tab between the
mounting bracket and rear panel.
PLACE TAB BETWEEN
VALVE BODY AND PANEL
SV3085
C. Fold insulation and hold against right hand side
of valve while securing with electrical tape. Seal
the line set insulation to the shut off valve
insulation with electrical tape.
FOLD INSULATION OVER
RIGHT SIDE OF VALVE AND
SECURE WITH
ELECTRICAL TAPE
Part No. 80-1214-32-17
SV3086
Installation InstructionsSection 2
Revised 8/2003
THIS PAGE INTENTIONALLY LEFT BLANK
2-18
Part No. 80-1214-3
Component Identification
ICE MACHINE HEAD SECTION
QC700/QF800
Section 3
Ice Machine Operation
CONDENSER FAN
MOTOR
QF400
ICE/OFF/CLEAN
TOGGLE SWITCH
WATER FLOAT
VALVE COIL
WATER LEVEL
WATER LEVEL
PROBES
PROBE
SOLUTION FILL
ICE CHUTE
EVAPORATOR
CLEANING
HOLE
DUMP VALVE
SV2019
WATER FLOAT
VALVE COIL
WA TER INLET QUICK
DISCONNECT
FITTING
WA TER INLET QUICK
DISCONNECT
QUARTER TURN
THUMBSCREWS
GEARMOTOR
CONDENSER
AIR FILTER
POTABLE
WATER
INLET
POTABLE WATER
DRAIN
SV2022
ICE
CHUTE
CONTROL
BOX
ICE/OFF/CLEAN
TOGGLE SWITCH
CONDESER
FAN/ MOTOR
POTABLE
WATER DRAIN
GEAR MOTOR /
GEAR BOX
ASSEMBLY
SV2053
DUMP
VALVE
AIR COOLED
CONDENSER
SV2044
Part Number 80-1214-33-1
Ice Machine OperationSection 3
QF2300
CLEANING
ICE/OFF/
CLEAN
TOGGLE
SWITCH
SOLUTION FILL
HOLE
ICE CHUTE
RETAINING
CLAMP
EVAPORATOR
ELECTRICAL
COMPARTMENT
CONDENSER
FAN MOTOR
AIR
CONDENSER
ICE CHUTE
WATER LEVEL
PROBES
CLEANING
SOLUTION
FILL HOLE
WATER
RESERVOIR
GEAT MOTOR/
GEAR BOX
ASSEMBLY
FLOAT VALVE
ICE CHUTE
ELBOW
DUMP
VALVE
SV2102
SUCTION
FILTER
HEAD
COMPRESSOR
PRESSURE
CONTROL
VALVE
RFC2385 Remote Condensing Unit
SV2100
3-2
Part Number 80-1214-3
Section 3Ice Machine Operation
Operational Checks
GENERAL
Manitowoc ice machines are factory-operated and
adjusted before shipment. Normally , a newly installed ice
machine does not require any adjustment.
To ensure proper operation, always follow the
Operational Checks:
•when starting the ice machine for the first time
•after a prolonged out of service period
•after cleaning and sanitizing
NOTE: Routine adjustments and maintenanc e
procedures outlined in this manual are not covered by
the warranty.
WATER LEVEL CHECK
The float valve maintains the correct water level. The
water level must allow the water level probes to maintain
water contact throughout the freeze cycle. The water
level is factory set and normally will not require
adjustment. Check the water level during the freeze
cycle. The water level is correct if the water level
indicator light is energized (compressor is running) and
no water is entering the overflow tube. (Check for
overflow water exiting the ice machine drain line at the
floor drain).
If adjustments are necessary:
A. Rotate float clockwise to increase water level
B. Rotate float counterclockwise to decrease water
level
C. Verify the outlet for the water float valve is at a
20 to 30 degree angle to prevent contact with
the float.
WATER FLOAT
VAL VE SOLENOID
COIL
VERIFY WATER
OUTLET DOES
NOT POINT
STRAIGHT
DOWN IT MAY
INTERFERE
WITH FLOAT
WATER LEVEL
PROBE
WATER FLOAT
VALVE
WATER FLOAT
ROTATE TO
ADJUST WA TER
LEVEL
SV2029
Part Number 80-1214-33-3
Ice Machine OperationSection 3
Interior Cleaning and Sanitizing
GENERAL
You are responsible for main taining the ice machine in
accordance with the instructions in this manual.
Maintenance procedures are not covered by the
warranty.
Clean and sanitize the ice machine every six months for
efficient operation. If the ice machine requires more
frequent cleaning and sanitizing, consult a qualified
service company to test the water quality and
recommend appropriate water treatment. An extremely
dirty ice machine must be taken apart for cleaning and
sanitizing.
Manitowoc Ice Machine Cleaner and Sanitizer are the
only products approved for use in Manitowoc ice
machines.
Caution
!
Use only Manitowoc approved Ice Machine Cleaner
(part number 000000084) and Sanitizer (part
number 94-0565-3). It is a violation of Federal law to
use these solutions in a manner inconsistent with
their labeling. Read and understand all labels
printed on bottles before use.
Caution
!
Do not mix Cleaner and Sanitizer solutions together.
It is a violation of Federal law to use these solutions
in a manner inconsistent with their labeling.
!
Warning
Wear rubber gloves and safety goggles ( and/or face
shield) when handling ice machine Cleaner or
Sanitizer.
Manitowoc Ice Machines have three separate cleaning
procedures.
Preventative Maintenance Cleaning Procedure
Procedure starts on Page 3-6
Perform this procedure as required for your water
conditions.
•Allows cleaning the ice machine without removing all
of the ice from the bin
•Removes mineral deposits from areas or surfaces
that are in direct contact with water during the freeze
cycle (reservoir, evaporator, auger, drain lines ).
Cleaning/Sanitizing Procedure
Procedure starts on Page 3-8
This procedure must be performed a minimum of once
every six months.
•All ice must be removed from the bin
•The ice machine and bin must be disassembled
cleaned and sanitized
•The ice machine produces ice with the cleaner and
sanitizer solutions
•All ice produced during the cleaning and sanitizing
procedure must be discarded
Heavily Scaled Cleaning Procedure
Procedure starts on Page 3-10
Perform this procedure if you have some or all of these
symptoms.
•Grinding, popping or squealing noises from the
evaporator
•Grinding noise from gearbox
•Ice machine trips speed sensor
NOTE: A Cleaning/Sanitizing Procedure must be
performed after this procedure.
3-4
EXTERIOR CLEANING
Remove dust and dirt off exterior surfaces with mild
household dish-washing detergent and warm water.
Wipe dry with a clean, soft cloth.
Part Number 80-1214-3
Section 3Ice Machine Operation
CLEANING THE CONDENSER
!
Warning
Disconnect electric power to the ice machine and
the remote condenser at the electric service switch
before cleaning the condenser.
Air-Cooled Condenser
(SELF-CONTAINED AND REMOTE MODELS)
A dirty condenser restricts airflow, resulting in
excessively high operating temperatures. This reduces
ice production and shortens component life. Clean the
condenser at least every six months. Follow the steps
below.
Caution
!
The condenser fins are sharp. Use care when
cleaning them.
1. The washable aluminum filter on self-contained ice
machines is designed to catch dust, dirt, lint and
grease. This helps keep the condenser clean. Clean
the filter with a mild soap and water solution.
3. Shine a flashlight through the condenser to check
for dirt between the fins. If dirt remains:
A. Blow compressed air through the condenser fins
from the inside. Be careful not to bend the fan
blades.
B. Use a commercial condenser coil cleaner.
Follow the directions and cautions supplied with
the cleaner.
4. Straighten any bent condenser fins with a fin comb.
CONDENSER
FIN COMB
“COMB”
DOWN
ONLY
AIR FILTER
SV1608
Self-Contained Air-Cooled Filter
2. Clean the outside of the condenser (bottom of a
remote condenser) with a soft brush or a vacuum
with a brush attachment. Clean from top to bottom,
not side to side. Be careful not to bend the
condenser fins.
SV1515
Straighten Bent Condenser Fins
5. Carefully wipe off the fan blades and motor with a
soft cloth. Do not bend the fan blades. If the fan
blades are excessively dirty, wash with warm, soapy
water and rinse thoroughly.
Caution
!
If you are cleaning the condenser fan blades with
water, cover the fan motor to prevent water
damage.
Part Number 80-1214-33-5
Ice Machine OperationSection 3
MANITOWOC’S CLEANING TECHNOLOGY
Manitowoc Flake/Chiplet Ice Machines include technology that allows the initiation and completion of a cleaning or
sanitizing cycle at the flip of a switch. This cycle will permit cleaning of all surfaces that come in contact with the water
distribution system. Periodic maintenance must be performed that includes sanitizing the bin and adjacent surface
areas, which are not contacted by the wate r distribution system.
Depending on local water conditions Manitowoc recommends initiating preventative maintenance cleaning
procedures between the 6 month cleanings.
This preventive maintenance removes mineral build-up from the evaporator, which results in peak efficiency and
lower operating costs.
This technology will also allow initiation and completion of a clean or sanitize cycle, after which the ice machine
automatically starts ice making again.
Refer to the cleaning/sanitizing procedure for complete details.
Use Ice machine cleaner part number 000000084
only.This cleaner is used to remove lime scale or other
mineral deposits. It is not used to remove algae or slime.
Refer to “Cleaning/Sanitizing Procedure” for removal of
algae and slime. To initiate a cleaning cycle using
Manitowoc’s Cleaning Technology use the following
procedure.
Step 1 Remove front and top covers and set the toggle
switch to the OFF position.
Step 2 T o st art a cleaning cycle, move the toggle switch
to the CLEAN position. Water will flow through the water
dump valve and down the drain. The flush, gear motor,
speed, dump valve and water solenoid lights will
energize to indicate the ice machine is in the clean
mode.
Step 3 Remove the 1 1/2” yellow plug from the top
cover of the water reservoir. Wait about one minute or
until the dump valve light de-energizes, then add the
proper amount of Manitowoc Ice Machine Cleaner and
re-install plug.
Step 4 .The ice machine will automatically time out four
flush and rinse cycles, and then stop. The flush light
remains energized until the toggle switch is moved to the
OFF position. This entire cycle lasts approximately 11
minutes.
Model
QC700/QF800/QF23003 ounces (90 ml)
NOTE: Periodic cleaning must be performed on adjacent
surface areas not contacted by the water distribution
system.
Manitowoc recommends disassembling, cleaning and
sanitizing the ice machine and bin/dispenser ev er y six
months.
NOTE: The ice machine may be set to start and finish a
cleaning procedure, and then automatically start ice
making again. Wait about one minute into the cleaning
cycle (until the dump valve light de-energizes), then
move the switch from CLEAN to ICE position.
When the cleaning cycle is complete, the flush light will
de-energize and ice making will start automatically
Amount of Cleaner
Part Number 000000084
3-6
Part Number 80-1214-3
Section 3Ice Machine Operation
PREVENTATIVE MAINTENANCE CLEANING PROCEDURE QF400
Use Ice machine cleaner part number 000000084 only.
This cleaner is used to remove lime scale or other
mineral deposits. It is not used to remove algae or slime.
Refer to “Cleaning/Sanitizing Procedure” for removal of
algae and slime. To initiate a cleaning cycle using
Manitowoc’s Cleaning Technology use the following
procedure.
Step 1 Set the toggle switch to the OFF position. Open
the bin door and remove the 2 thumbscrews and white
plastic panel.
Step 2 T o st art a cleaning cycle, move the toggle switch
to the CLEAN position. Water will flow through the water
dump valve and down the drain. The flush, gear motor,
speed, dump valve and water solenoid lights will
energize to indicate the ice machine is in the clean
mode.
Step 3 Wait about one minute or until the dump valve
light de-energizes. Lift the front cover on the water
reservoir and add the proper amount of Manitowoc Ice
Machine Cleaner.
Step 4 The ice machine will automatically time out four
flush and rinse cycles, and then stop. The flush light
remains energized until the toggle switch is moved to the
OFF position. This entire cycle lasts approximately 11
minutes.
NOTE: Periodic cleaning must be performed on adjacent
surface areas not contacted by the water distrib utio n
system.
Manitowoc recommends disassembling, cleaning and
sanitizing the ice machine and bin/dispenser every six
months.
NOTE: The ice machine may be set to start and finish a
cleaning procedure, and then automatically start ice
making again. Wait about one minute into the cleaning
cycle (until the dump valve light de-energizes), then
move the switch from CLEAN to ICE position.
When the cleaning cycle is complete, the flush light will
de-energize and ice making will start automatically
Model
QF4003 ounces (90 ml)
Amount of Cleaner
Part Number 000000084
Part Number 80-1214-33-7
Ice Machine OperationSection 3
CLEANING/SANITIZING PROCEDURE QC700/QF800/QF2300
Use Ice machine cleaner part number 000000084.
Use Ice machine sanitizer part number 94-0565-3.
Step 1 Remove front and top covers and set the toggle
switch to the OFF position.
Step 2 Remove all ice from the bin.
Step 3 Disconnect water supply line at float valve quick
disconnect by depressing stainless steel lever.
Step 4 Remove the top cover from water reservoir.
Step 5 Remove the water level probes from the top
cover and with the wires attached, place the water level
probes (stand upright) inside the water reservoir.
Step 6 Follow the chart and premix cleaner and water.
Amount of Water
1 gallon (3.8 Liters)3 ounces (90 ml)
Amount of Cleaner
Part Number 000000084
Step 7 To start cleaning, move the toggle switch to the
ICE position.
Step 8 Wait about 45 seconds until the dump valve light
de-energizes. Fill the evaporator and reservoir with
cleaning solution. The ice machine will make ice with the
cleaning solution and deposit the ice in the bin. Add the
remaining cleaner/water solution when the water level in
the reservoir drops.
NOTE: Do not allow the water level to drop below the
water level probes. The ice machine will discontinue the
cycle when the water level probes open (lose water
contact) for more than 30 seconds.
Step 9 After all of the cleaner/water solution has been
added reconnect the water supply line to the float valve.
Continue the freeze cycle for 10 minutes to remove the
cleaning solution from the water circuit.
Step 17 Remove the water level probes from the top
cover and with the wires attached, place the water level
probes (stand upright) inside the water reservoir.
Step 18 Refer to chart and premix water and sanitizer.
Amount of WaterAmount of Sanitizer
6 Gallons (23L) Cool Water4 ou nces (120 ml)
Step 19 To start sanitizing, move the toggle switch to
the ICE position.
Step 20 Wait about 45 seconds until the dump valve
light de-energizes. Fill the evaporator and reservoir with
sanitizer/water solution. The ice machine will make ice
with the sanitizer/water solution and deposit the ice in
the bin. Add the remaining sanitizer/water solution when
the water level in the reservoir drops.
NOTE: Do not allow the water level to drop below the
water level probes. The ice machine will discontinue the
cycle when the water level probes open (lose water
contact) for more than 30 seconds.
Step 21 After all of the sanitizer/water solution has
been added to the reservoir, reconnect the water supply
line at the float valve quick disconnect.
Continue the sanitize cycle for 10 minutes to remove the
sanitizing solution from the water circuit.
Step 22 Place the toggle switch in the Off position, then
disassemble the ice machine and hand sanitize all parts
(refer to disassembly for cleaning/sanitizing for
procedure).
Step 23 Remove and discard all ice produced in the
sanitizing process, then reassemble the ice machine
and reconnect the water supply.
Step 10 Place the toggle switch in the Off position.
Step 11 Disassemble the ice machine and hand clean
all parts (refer to disassembly for cleaning/sanitizing).
Step 12 Hand sanitize all parts (refer to disassembly for
cleaning/sanitizing for procedure).
Step 13 Remove and discard all ice produced during
the cleaning process.
Step 14 Reassemble ice machine.
Step 15 Disconnect water supply line at float valve
quick disconnect by depressing stainless steel lever.
Step 16 Remove the top cover from water reservoir.
3-8
Part Number 80-1214-3
Section 3Ice Machine Operation
CLEANING/SANITIZING PROCEDURE QF400
Use Ice machine cleaner part number 000000084.
Use Ice machine sanitizer part number 94-0565-3.
Step 1 Set the toggle switch to the OFF position and
remove all ice from the bin.
Step 2 Remove the 2 thumbscrews and white plastic
panel.
Step 17 Remove the water level probes from the top
cover and with the wires attached, place the water level
probes (stand upright) inside the water reservoir.
Step 18 Refer to chart and premix water and sanitizer.
Amount of WaterAmount of Sanitizer
6 Gallons (23L) Cool Water4 ou nces (120 ml)
Step 3 Disconnect water supply line at float valve quick
disconnect by depressing stainless steel lever.
Step 4 Remove the top cover from water reservoir.
Step 5 Remove the water level probes from the top
cover and with the wires attached, place the water level
probes (stand upright) inside the water reservoir.
Step 6 Follow the chart and premix cleaner and water.
Amount of Water
1 gallon (3.8 Liters)3 ounces (90 ml)
Amount of Cleaner
Part Number 000000084
Step 7 To start cleaning, move the toggle switch to the
ICE position.
Step 8 Wait about 45 seconds until the dump valve light
de-energizes. Fill the evaporator and reservoir with
cleaning solution. The ice machine will make ice with the
cleaning solution and deposit the ice in the bin. Add the
remaining cleaner/water solution when the water level in
the reservoir drops.
NOTE: Do not allow the water level to drop below the
water level probes. The ice machine will discontinue the
cycle when the water level probes open (lose water
contact) for more than 30 seconds.
Step 9 After all of the cleaner/water solution has been
added reconnect the water supply line to the float valve.
Continue the freeze cycle for 10 minutes to remove the
cleaning solution from the water circuit.
Step 19 To start sanitizing, move the toggle switch to
the ICE position.
Step 20 Wait about 45 seconds until the dump valve
light de-energizes. Fill the evaporator and reservoir with
sanitizer/water solution. The ice machine will make ice
with the sanitizer/water solution and deposit the ice in
the bin. Add the remaining sanitizer/water solution when
the water level in the reservoir drops.
NOTE: Do not allow the water level to drop below the
water level probes. The ice machine will discontinue the
cycle when the water level probes open (lose water
contact) for more than 30 seconds.
Step 21 After all of the sanitizer/water solution has
been added to the reservoir, reconnect the water supply
line at the float valve quick disconnect.
Continue the sanitize cycle for 10 minutes to remove the
sanitizing solution from the water circuit.
Step 22 Place the toggle switch in the Off position, then
disassemble the ice machine and hand sanitize all parts
(refer to disassembly for cleaning/sanitizing for
procedure).
Step 23 Remove and discard all ice produced in the
sanitizing process, then reassemble the ice machine
and reconnect the water supply.
Step 10 Place the toggle switch in the Off position.
Step 11 Disassemble the ice machine and hand clean
all parts (refer to disassembly for cleaning/sanitizing).
Step 12 Hand sanitize all parts (refer to disassembly for
cleaning/sanitizing for procedure).
Step 13 Remove and discard all ice produced during
the cleaning process.
Step 14 Reassemble ice machine.
Step 15 Disconnect water supply line at float valve
quick disconnect by depressing stainless steel lever.
Step 16 Remove the top cover from water reservoir.
Part Number 80-1214-33-9
Ice Machine OperationSection 3
PROCEDURE TO CLEAN HEAVILY SCALED FLAKE/CHIPLET ICE MACHINES QF400/QC700/QF800/QF2300
Step 1 Remove front and top covers, set the toggle
switch to the OFF position.Remove all ice from the bin.
Step 2 Remove front and top covers and set the toggle
switch to the OFF position.
Step 3 Disconnect water supply line at float valve quick
disconnect by depressing stainless steel lever.
Step 4 Refer to chart below:
Step 5 Remove all water from the evaporator and water
reservoir. S tart an ice making cycle by moving the toggle
switch to the ICE position. Water will flow through the
water dump valve and down the drain for 45 seconds.
After 45 seconds move the toggle switch to the OFF
position. Remove the plug from the top cover of the
water reservoir. Add the entire cleaner/water solution
and re-install the plug.
Premix cleaner with lukewarm water in a nonmetallic container.
Mix Cleaner and W a ter
Water
Model
QF40048 oz (1.4 L)32 oz (0.94 L)16 oz (0.5 L)
QF800/
QC700
QF230072 oz (2.1 L)48 oz (1.4 L)24 oz (0.7 L)
Reservoir
Capacity
48 oz (1.4 L)32 oz (0.94 L)16 oz (0.5 L)
Use Ice machine cleaner
part number 000000084
only
CleanerWater
Leave the cleaner/water sol ut io n in th e ev ap o r at o r
for a minimum of 4 hours.
Step 6 Move the toggle switch from OFF to ICE. The
cleaner/water solution will flow through the water dump
valve and down the drain for 45 seconds.
Step 7 Move the toggle switch to the OFF position,
then follow the standard cleaning and sanitizing
procedures for the model ice machine you are cleaning.
3-10
Part Number 80-1214-3
Section 3Ice Machine Operation
REMOVAL OF PARTS FOR CLEANING/SANITIZING
3. Soak the removed part(s) in a properly mixed
!
Warning
Disconnect electric power to the ice machine at the
electric switch box before proceeding.
Warning
!
Wear rubber gloves and safety goggles ( an d/or face
shield) when handling Ice Machine Cleaner or
Sanitizer.
Caution
!
Do not mix Cleaner and Sanitizer solutions together.
It is a violation of Federal law to use these solutions
in a manner inconsistent with their labeling.
1. Turn off the water supply to the ice machine at the
water service valve or disconnect water supply line
at float valve quick disconnect by depressing
stainless steel lever and pulling the fitting off.
2. Remove the components listed on the following
pages for cleaning and sanitizing.
solution of cleaner and water.
Solution TypeWaterMixed With
Cleaner 1 gal. (4 l)16 oz (500 ml) cleaner
Part Number 000000084
4. Use a soft-bristle brush or sponge (NOT a wire
brush) to carefully clean the parts.
5. Use the solution and a brush or sponge to clean all
disassembled components and the inside of the bin.
6. Rinse all cleaned parts with clear water.
7. Mix a solution of sanitizer and water.
Solution TypeWaterMixed With
Sanitizer3 gal. (11.4 l)2 oz (60 ml) sanitizer
Part Number 94-0565-3
8. Soak the parts in the sanitizer /water solution for 10
minutes. Use the sanitizer/water solution and a
sponge to sanitize all removed components and the
inside of the bin. Do not rinse the sanitized parts.
9. Install the removed parts in the ice machine.
10. Turn on the water and electrical supply.
Part Number 80-1214-33-11
Ice Machine OperationSection 3
Water Level Probe Removal
QF400/QC700/QF800/QF2300
Water Level Probe Removal
1. Place the toggle switch in the OFF position, turn off the
water supply and disconnect electrical power to the ice
machine.
2. Disconnect water supply line at float valve quick disconnect
by depressing stainless steel lever.
3. Pull up on water level probes to remove.
4. Disconnect wires from water level probes or control board.
WATER LEVEL
PROBES
SV2043
QF400
Water Reservoir Cover Removal
1. Place the toggle switch in the OFF position, turn off
the water supply and disconnect electrical power to
the ice machine.
2. Remove water level probes.
3. Remove water float valve coil.
4. Depress coil and rotate 1/4 turn counterclockwise.
5. With coil wires attached, lift coil off enclosure tube.
6. QF0800/QC0700 ONLY Rotate quarter turn
fasteners counterclockwise.
7. QF0800/QC0700 ONLY Remove cotter key and pin
from ice chute.
8. Remove top cover from float reservoir.
4
5
3
WATER LEVEL
PROBES
WATER LEVEL
PROBES
QC700/QF800
SV2028
SV1791
6
SV2030
QC700/QF800 Shown
3-12
QF2300
Part Number 80-1214-3
Section 3Ice Machine Operation
Water Reservoir Cover Removal
QF2300
1. Place the toggle switch in the OFF position, turn off
the water supply and disconnect electrical power to
the ice machine.
2. Remove water level probes.
3. Remove water float valve coil.
4. Depress coil and rotate 1/4 turn counterclockwise.
5. With coil wires attached, lift coil off enclo sure tube.
6. Remove top cover from float reservoir.
3, 4, 5
2
6
Float Valve Removal
1. Place the toggle switch in the OFF position, turn off
the water supply and disconnect electrical power to
the ice machine.
2. Disconnect water supply line at float valve quick
disconnect by depressing stainless steel lever.
3. Remove water float valve coil.
4. Depress coil and rotate 1/4 turn counterclockwis e.
5. With coil wires attached, lift coil off enclosure tube.
6. QF0800/QC0700/QF2300 ONL Y Rot ate quarter turn
fasteners counterclockwise.
7. QF0800/QC0700 ONLY Remove cotter key and pin
from ice chute.
8. Remove top cover from float reservoir.
9. Lift float valve out of float reservoir.
FLOAT VALVE
QF2300 Shown
SV1791
SV2015
QC700/QF800 Shown
Part Number 80-1214-33-13
Ice Machine OperationSection 3
Water Reservoir Removal
1. Place the toggle switch in the OFF position and turn
off the water supply to the ice machine at the water
service valve.
2. Disconnect water supply line at float valve quick
disconnect by depressing stainless steel lever.
3. Place the toggle switch in the ICE position. The dump
valve will open and the float reservoir will empty.
4. After the reservoir is empty, place the toggle switch
in the OFF position and disconnect power to the ice
machine at the service disconnect.
5. Remove water float valve coil.
A. Depress coil and rotate 1/4 turn
counterclockwise.
B. With coil wires attached, lift coil off enclosure
tube.
5. QF0800/QC0700 ONLY Rotate quarter turn
fasteners counterclockwise.
6. QF0800/QC0700 ONLY Remove cotter key and pin
from ice chute.
7. Remove top cover from float reservoir.
8. Lift float valve out of float reservoir.
Ice Diverter Removal
QF0400
1. Place the toggle switch in the OFF position, turn off the
water supply and disconnect electrical power to the ice
machine.
2. Remove thumbscrews and lift panel forward.
3. Remove bin level sensor from white plastic panel.
4. Remove ice diverter from bin.
3
2
9. Disconnect the drain lines from reservoir.
10. Lift reservoir off of evaporator assembly.
WATER
RESERVOIR
EVAPORATOR
ASSEMBLY
SV2024
QC700/QF800 Shown
SV2052
3-14
Part Number 80-1214-3
Section 3Ice Machine Operation
Ice Chute Removal
QC700/QF800
QF2300
1. Follow steps to remove float reservoir.
2. The ice chute and ice chute grommet will be
removed as a unit. Pull forward on the top of the ice
chute, and slide the ice chute and grommet off the
end of the evaporator spout.
3. Remove evaporator spout insulation.
4. Lift ice chute out of the base.
5. Remove insulation from the bottom of the ice chute.
6. Remove bin level sensor (stainless steel plate) from
ice chute. (Bin level sensor can be disconnected
from the control board for complete removal from
the ice machine.)
NOTE: Clean and sanitize the base and all ice chute
components before reinstalling.
6
3
2
1. Place the toggle switch in the OFF position, turn off
the water supply and disconnect electrical power to
the ice machine.
2. Remove ice chute retaining clamp from top of
evaporator.
3. Remove vinyl hose from ice chute spout.
4. Follow steps to remove water reservoir.
5. The ice chute elbow and the ice chute will be
removed separately. Support the ice chute and pull
forward on the elbow to remove.
6. Lift ice chute out of the base, tip bo ttom fo rward and
remove bin level sensor (stainless steel plate) from
the top of the ice chute. (Bin level sensor can be
disconnected from the control board for complete
removal from the ice machine.)
7. Remove insulation from ice chute elbow and ice
chute base.
8. Remove evaporator spout o-ring.
NOTE: Clean and sanitize the base, spout and all ice
chute components before re-installing.
4
4
5
5
3
SV2011
6
2
8
7
SV1787
Part Number 80-1214-33-15
Ice Machine OperationSection 3
Bin Door Removal
QF0400
Door removal allows easier access for cleaning and
sanitizing.
1. Disconnect the electrical power to the ice machine
and remove ice from bin.
2. Grasp the rear of the bin door and pull bin door
forward approximately 5”.
3. Slide bin door to the rear while applying upward
pressure (the rear door pins will ride up into the track
slot).
4. Slide the rear door pins off the end and then below
the door track. Slide bin door forward allowing the
back of the door to lower into the bin. Continue
forward with the bin door until the front pins bottom
out in the track.
5. Lift the right side of the bin door until the front pin
clears the track.
6. Remove door from bin.
Press Down to
Release Door
Cabinet Removal
QF0400
1. Remove all ice from bin and disconnect power.
2. Remove thumbscrews and evaporator panel.
3. Remove three screws from the bottom of the left and
right side of cabinet.
4. Remove nine screws from back panel.
5. Disconnect drain line clamp.
6. Slide cabinet forward and remove from base.
Remove 3 Screws
From Each Side
SV2044
Track Slot
Slide Door Forward
SV2068
Remove Back
Panel screws
SV2069
3-16
Part Number 80-1214-3
Section 3Ice Machine Operation
Water Dump Valve
The water dump valve normally does not require
removal for cleaning. To determine if removal is
necessary:
The plunger and the inside of the enclosing tube
must be completely dry before assembly.
Important
1. Locate the water dump valve.
2. Set the toggle switch to ICE.
3. While the ice machine is in the freeze mode, check
the water trough to determine if the dump valve is
leaking. If there is no or little water in the water
trough (during the freeze cycle) the dump valve is
leaking.
A. If the dump valve is leaking, re mo ve ,
disassemble and clean it.
B. If the dump valve is not leaking, do not remove
it. Instead, follow the “Ice Machine Cleaning
Procedure”.
Follow the procedure below to remove the dump valve.
Warning
!
Disconnect the electric power to the ice machine at
the electric service switch box and turn off the water
supply before proceeding.
1. If so equipped, remove the water dump valve shield
from its mounting bracket.
NOTE: During cleaning, do not stretch or damage the
spring.
6. Remove the tubing from the dump valve by twisting
the clamps off.
7. Remove the valve body, twist off.
COIL
SPRING
NYLON GASKET
PLUNGER
DIAPHRAM
2. Leaving the wires attached, twist coil and rotate it
counter-clockwise1/4 turn.
3. Lift the coil assembly off the valve body.
4. Remove the spring, plunger, and nylon gasket from
the valve body.
5.
NOTE: At this point, the water dump valve can easily be
cleaned. If complete removal is desired, continue with
step 5.
MOUNTING BRACKET
VALVE BODY
Dump Valve Disassembly
Part Number 80-1214-33-17
Ice Machine OperationSection 3
Removal from Service/Winterization
GENERAL
Special precautions must be taken if the ice machine
head section is to be removed from service for an
extended period of time or exposed to ambient
temperatures of 32°F (0°C) or below.
Caution
!
If water is allowed to remain in the ice machine in
freezing temperatures, severe damage to some
components could result. Damage of this nature is
not covered by the warranty.
Follow the applicable procedure below.
1. Disconnect the electrical power at the circuit breaker
or the electric service switch.
2. Turn off the water supply.
3. Disconnect and drain the incoming ice-making water
line at the rear of the ice machine.
4. Disconnect drain tubing (from the inlet to dump
valve) and drain water into container and discard.
WATER COOLED CONDENSING UNIT
1. Perform steps 1-6 in previous column.
2. Disconnect the incoming water and drain lines from
the water-cooled condenser.
3. Insert a large screwdriver between the bottom spring
coils of the water regulating valve. Pry upward to
open the valve.
5. Make sure water is not trapped in any of the water
lines, drain lines, distribution tubes, etc.
SV1624
Pry Open the Water Regulating Valve
4. Hold the valve open and blow compressed air
through the condenser until no water remains.
3-18
Part Number 80-1214-3
QF400/QC700/QF800
Section 4
Ice Machine Sequence of Operation
PRIOR TO START-UP
When the toggle switch is placed in the “ice” position the
following must occur prior to starting an ice making
cycle.
A. The bin level probe must be open (bin level
light off). If the probe is closed, (bin level light
on) when the toggle switch is moved to ICE, the
control system waits until the bin level probe
opens, (bin level light off) before starting an ice
making sequence. If the bin level probe is
removed/disconnected the ice machine will not
start.
B. The water level probe must be closed (water
level light on) to start the compressor. If the
water level probe is open, (water level light off)
the control system waits until the water level
probe closes before starting the compressor.
INITIAL START-UP
1A. Flush
Immediately after placing the toggle switch into ICE, the
dump valve solenoid, and gearbox are energized. After
45 seconds the dump valve de-energizes.
1B. Water Fill
After 45 seconds the water float valve solenoid is
energized.
2. Freeze Cycle
When water contacts the water level probe the
compressor and condenser fan motor energize
(condenser fan motor is wired through a fan cycling
control).
The gear motor, compressor, condenser fan motor and
water float valve solenoid remain energized as the ice
machine makes ice. The water float valve will open and
close automatically to maintain the proper water level.
AUTOMATIC SHUT-OFF
3A. Ice Run Ou t
Ice will build up in the bin until it contacts the bin level
probe. After ice contacts the bin level probe for 30
continuous seconds the compressor de-energizes. To
allow excess ice to run out, the gear motor and th e water
float valve solenoid remain energized for an additional
45 seconds, then de-energize.
3B. Water Drain
To allow water to drain from the evaporator, the dump
valve energizes for 45 seconds, then de-energizes.
An 8-minute lockout starts when the compressor deenergizes. When the ice drops away from the bin level
probe the ice machine will begin an initial start-up cycle,
provided the “8-minute lockout” has expired.
8 Minute Lockout
The bin level light will flash until the 8-minute lockout
expires.
After the 8 minute lockout expires the bin level light will
de-energize.
The 8 minute lockout time can be overridden by moving
the ON/OFF/CLEAN toggle switch from ICE to OFF then
back to ICE.
FLUSH SEQUENCE IN THE “ICE” POSITION
After the ice machine has run for 100 hours the ice
machine will stop making ice and perform a flush
sequence. The flush sequence will remove minerals that
have settled in the bottom of the evaporator. The entire
flush sequence lasts approximately 11 minutes, after
which the ice machine automatically resumes ice
making and the 100 hour counter in the control board
resets to zero.
NOTE: Flake ice machines use an auger to remove ice
from the evaporator . Occasional noises (creaks, groa ns,
or pops) are a normal part of the ice making process.
Part No. 80-1214-34-1
Ice Machine Sequence of OperationSection 4
QF2200
PRIOR TO START-UP
When the toggle switch is placed in the “ice” position the
following must occur prior to starting an ice making
cycle.
A. The bin level probe must be open (bin level
light off). If the probe is closed, (bin level light
on) when the toggle switch is moved to ICE, the
control system waits until the bin level probe
opens, (bin level light off) before starting an ice
making sequence. If the bin level probe is
removed/disconnected the ice machine will not
start.
B. The water level probe must be closed (water
level light on) to start the compressor. If the
water level probe is open, (water level light off)
the control system waits until the water level
probe closes before starting the compressor.
INITIAL START-UP
1A. Flush
Immediately after placing the toggle switch into ICE, the
dump valve solenoid, and gearbox are energized. After
45 seconds the dump valve de-energizes.
1B. Water Fill
After 45 seconds the water float valve solenoid is
energized.
2. Freeze Cycle
When water contacts the water level probe the
compressor and condenser fan motor energize
(condenser fan motor is wired through a fan cycling
control).
The gear motor, liquid line solenoid, condenser fan
motor and water float valve solenoid remain energized
as the ice machine makes ice. The water float valve will
open and close automatically to maintain the proper
water level.
Remote Condensing Unit
AUTOMATIC SHUT-OFF
3A. Ice Run Ou t
Ice will build up in the bin until it contacts the bin level
probe. After ice contacts the bin level probe for 30
continuous seconds the compressor de-energizes. To
allow excess ice to run out, the gear motor and the water
float valve solenoid remain energized for an add itio nal 4
minutes, then de-energize.
3B. Water Drain
To allow water to drain from the evaporator, the dump
valve energizes for 90 seconds, then de-energizes.
An 8-minute lockout starts when the compressor deenergizes. When the ice drops away from the bin level
probe the ice machine will begin an initial start-up cycle,
provided the “8-minute lockout” has expired.
8 Minute Lockout
An 8 minute lockout starts when the compressor deenergizes. The bin level light will flash until the 8-minute
lockout expires.
After the 8 minute lockout expires the bin level light will
de-energize.
The 8 minute lockout time can be overridden by moving
the ON/OFF/CLEAN toggle switch from ICE to OFF then
back to ICE.
FLUSH SEQUENCE IN THE “ICE” POSITION
After the ice machine has run for 100 hours the ice
machine will stop making ice and perform a flush
sequence. The flush sequence will remove minerals that
have settled in the bottom of the evaporator. The entire
flush sequence lasts approximately 11 minutes, after
which the ice machine automatically resumes ice
making and the 100 hour counter in the control board
resets to zero.
NOTE: Flake ice machines use an auger to remove ice
from the evaporator . Occasional noises (creaks, groa ns,
or pops) are a normal part of the ice making process.
2. Freeze
When the refrigerant pressure is high enough, the lowpressure control closes. Closing the low pressure control
energizes the contactor coil and the compressor starts.
The compressor increases the refrigerant pressure, the
fan cycling control closes and the conden se r fan mo to r
starts. The compressor and condenser fan motor remain
energized during the entire Freeze Cycle .
4-2
Remote Condensing Unit
3. Automatic Shut-Off
When the refrigerant pressure is low enough to open the
low-pressure switch, the contactor coil is de-energized
and the compressor and condenser fan motor stop.
Part No. 80-1214-3
Section 4Ice Machine Sequence of Operation
QF2300
PRIOR TO START-UP
When the toggle switch is placed in the “ice” position the
following must occur prior to starting an ice making
cycle.
A. The bin level probe must be open (bin level
light off). If the probe is closed, (bin level light
on) when the toggle switch is moved to ICE, the
control system waits until the bin level probe
opens, (bin level light off) before starting an ice
making sequence. If the bin level probe is
removed/disconnected the ice machine will not
start.
B. The water level probe must be closed (water
level light on) to start the compressor. If the
water level probe is open, (water level light off)
the control system waits until the water level
probe closes before starting the compressor.
INITIAL START-UP
1A. Flush
Immediately after placing the toggle switch into ICE, the
dump valve solenoid, and gearbox are energized. After
45 seconds the dump valve de-energizes.
1B. Water Fill
After 45 seconds the water float valve solenoid is
energized.
2. Freeze Cycle
When water contacts the wate r level probe the liquid line
solenoid valve, equalization valve, compressor and
condenser fan motor energize (condenser fan motor is
wired through a fan cycling control).
The gear motor, compressor, condenser fan motor and
water float valve solenoid remain energized as the ice
machine makes ice. The water float valve will open and
close automatically to maintain the proper water level.
AUTOMATIC SHUT-OFF
3A. Ice Run Ou t
Ice will build up in the bin until it contacts the bin level
probe. After ice contacts the bin level probe for 30
continuous seconds the liquid line solenoid valve,
equalization valve and compressor de-energizes.
To allow excess ice to run out, the gear motor and the
water float valve solenoid remain energized for an
additional 4 minutes, then de-energize.
3B. Water Drain
To allow water to drain from the evaporator, the dump
valve energizes for 90 seconds, then de-energizes.
An 8-minute lockout starts when the compressor deenergizes. When the ice drops away from the bin level
probe the ice machine will begin an initial start-up cycle,
provided the “8-minute lockout” has expired.
8 Minute Lockout
The bin level light will flash until the 8-minute lockout
expires.
After the 8 minute lockout expires the bin level light will
de-energize.
The 8 minute lockout time can be overridden by moving
the ON/OFF/CLEAN toggle switch from ICE to OFF then
back to ICE.
FLUSH SEQUENCE IN THE “ICE” POSITION
After the ice machine has run for 100 hours the ice
machine will stop making ice and perform a flush
sequence. The flush sequence will remove minerals that
have settled in the bottom of the evaporator. The entire
flush sequence lasts approximately 11 minutes, after
which the ice machine automatically resumes ice
making and the 100 hour counter in the control board
resets to zero.
NOTE: Flake ice machines use an auger to remove ice
from the evaporator . Occasional noises (creaks, groa ns,
or pops) are a normal part of the ice making process.
Part No. 80-1214-34-3
Ice Machine Sequence of OperationSection 4
THIS PAGE INTENTIONALLY LEFT BLANK
4-4
Part No. 80-1214-3
Section 5
Revised 8/2003
Troubleshooting
Checklist
ProblemPossible CauseTo Correct
Ice machine does not operate.No electrical power to the ice machine.Replace the fuse/reset the breaker/turn on
Control Board fuse open
ICE/OFF/CLEAN toggle switch set improperly.Move toggle switch to the ICE position.
8 minute lockout has not expired.Bin level light will flash to indicate 8 minute
Bin level sensor is disconnected or is
contacting the ice.
High Pressure Control is open.Clean condenser, check fan motor, check high
Gear Motor runs but
compressor will not start.
Remotes Only No electrical power to condensing unitReplace the fuse/reset the breaker/turn on the
Ice machine stops and can be
restarted by moving the toggle
switch to OFF and back to ICE.
Ice quality is poor.Poor incoming water quality.Test the quality of the incoming water and
Low ice capacity.Water float valve screen is dirty.Remove and clean the filter screen.
Air-Cooled Models Only Objects stacked around ice machine, blocking
Water reservoir is empty. (Water must contact
the water level probe to start the compressor).
Water level probes out of positionCorrect water level probe position.
The SafeGuard feature is stopping the ice
machine.
Water filtration is poor.Replace filter.
Incoming water temperature is above 90
(32.3
°C)
Water pressure is low.Water pressure must remain between 20 and
Water softener is working improperly (if
applicable).
Incoming water supply is shut-off.Open the water service valve.
Water dump valve is leaking.Clean the dump valve.
Water Pressure is low.Water pressure must remain between 20 and
Incoming water temperature is above 90
(32.2
°C)
Water float valve stuck open or leaking.Remove the float valve and clean it.
airflow to condenser.
High air temperature around ice machine.Air temperature must not exceed 110
Inadequate clearance around the ice machine. Provide adequate clearance.
The condenser is dirty.Clean the condenser.
°F
°F
main power switch/plug cord into receptacle.
lockout has not expired. Refer to Sequence of
Operation
Connect bin level sensor or remove ice
contacting probe.
pressure control operation. Check for
refrigerant overcharge or non-condensables in
system.
Open water service valve or clean float valve
screen. Check water level probe
main power switch.
Refer to “SafeGuard Feature” in this section
check filter.
Correct water temperature. (Verify check/
mixing valves in other equipment are working
properly). Connect the ice machine to a cold
water supply.
80 psig.
Repair the water softener.
80 psig.
Correct water temperature. (verify check/
mixing valves in other equipment is working
properly)
Remove items blocking airflow.
°F
°C)
(43.3
Part No. 80-1214-35-1
TroubleshootingSection 5
Revised 8/2003
Safeguard Feature
In addition to standard safety controls, your Manitowoc ice machine features built-in SafeGuards. The ice machine will
stop when conditions arise that would cause major component failure.
RESET PROCEDURE
1. Move the ICE/OFF/CLEAN toggle switch to OFF and
then back to ICE.
SAFEGUARD INDICATOR LIGHTS
During a SafeGuard Mode the corresponding light (disch
temp, water level or speed) will flash continuously.
A. If a safeguard feature has stopped the ice
machine, it will restart after a short delay.
Proceed to step 2.
B. If the ice machine does not restart, see “Ice
Machine Does Not Operate” on previous page.
2. Allow the ice machine to run to determine if the
condition is reoccurring.
A. If the ice machine continues to run, the condition
has corrected itself. Allow the ice machine to
continue running.
B. If the ice machine stops again, the condition has
reoccurred.
SafeGuards
•No Water
•Gear Motor Speed is Incorrect
•QF400/QC700/QF800 Only
temperature is too high or low during the freeze
cycle.
•
QF2200 Only - Liquid line temperature is too high or
low during the freeze cycle.
STANDBY MODE
The first time a failure occurs, the ice machine deenergizes and initiates a Standby Mode. The ice
machine will remain off for 60 minutes, then
automatically restart to see if the problem reoccurs.
During the Standby Mode the corresponding light
flashes continuously (disch temp, water level or speed).
If the same failure keeps occurring, the ice machine will
initiate a SafeGuard Mode and remain off until manually
restarted.
- Discharge line
The SafeGuard will remain in memory for 48 hours of ice
making time. After 48 hours of ice making time the
SafeGuard will automatically be erased. If power is
interrupted during the 48 hours, the timing will resume
when power is applied to the ice machine.
Placing the toggle switch in the OFF position:
The corresponding light will flash continuously.
Placing the toggle switch in the ICE position:
The light will de-energize and a start-up sequence will
initiate.
The corresponding light will flash anytime the toggle
switch is placed in the OFF position provided
48 hours of ice making time has not been exceeded.
5-2
Part No. 80-1214-3
Section 5Troubleshooting
Revised 8/2003
Analyzing Why SafeGuards May Stop the
Ice Machine
According to the refrigeration industry, a high
percentage of compressor failure are the result of
external causes. These can include flooding or starving
expansion valves, dirty condensers, water loss to the ice
machine, etc. SafeGuards protect the ice machine
(primarily the compressor) from external failures by
stopping ice machine operation before major component
damage occurs.
Refrigeration and electrical component failures may also
trip a safeguard. Eliminate all electrical components and
external causes first. If it appears that the refrigeration
system is causing the problem, use the charts,
checklists, and other references to determine the cause.
NOTE: The following checklists are designed to assist
the service technician in analysis. However, because
there are many possible external problems, do not limit
your diagnosis to only the items listed.
SAFEGUARD MODES
No Water
During the Freeze cycle if the water level probe opens or
remains open for more than 90 continuous seconds, the
ice machine will de-energize the compressor and gear
motor, continuously flash the water level light and initiate
a 60 minute Standby Mode.
During the Standby Mode the water level light will
continually flash to indicate a Standby Mode.
After the 60 -minute Standby Mode, the ice machine will
de-energize the water level light and initiate a start-up
sequence.
WATER CONTACTS THE WATER LEVEL PROBE:
The ice machine continues to make ice.
WATER LEVEL PROBE OPENS OR REMAINS OPEN
FOR MORE THAN 90 CONTINUOUS SECONDS:
The ice machine will start another 60-minute Standby
Mode.
The ice machine repeats the above sequence until:
Water contacts the water level probe
or
The toggle switch is moved to the OFF position.
INDICATOR LIGHT
Before 48 hours have elapsed:
After a Standby Mode has been initiated the water level
light will flash anytime the toggle switch is placed in the
OFF position.
After 48 hours have elapsed:
The SafeGuard will be automatically erased from
memory and the water level will not flash.
No Water Checklist
Possible Problem ListCorrective Action List
No waterRestore water supply.
Quick disconnect removed from water float valveRestore water supply.
Water float valve screen blockedClean screen.
Water float valve solenoid coil defectiveReplace coil (see Water float valve diagnostics).
Water float valve improperly adjustedAdjust valve (see Water level check).
Dump valve leakingRepair or replace dump valve.
Water level probes disconnected or removedConnect and correctly position probes.
Part No. 80-1214-35-3
TroubleshootingSection 5
Revised 8/2003
Gear Motor Speed
Anytime the motor speed sensor detects the motor
speed (rpm) is below the minimum range for
3 continuous seconds, the ice machine will:
1. De-energize the compressor and/or gear motor.
2. Continuously flash the Gear Motor Speed light.
3. Initiate a 60-minute Standby Mode.
During the Standby Mode the Motor Speed Sensor light
will flash to indicate a Standby Mode.
After the 60-minute Standby Mode, the ice machine will
de-energize the Motor Speed light and initiate a start-up
sequence.
Gear motor speed normal:
The ice machine continues to make ice.
Gear motor speed below minimum range for
3 continuous seconds:
The ice machine will start another 60-minute Standby
Mode.
During the SafeGuard Mode the Motor Speed Sensor
light will continually flash to indicate a SafeGuard Mode.
The ice machine remains off until:
•The toggle switch is moved from OFF to ICE.
•Line voltage is interrupted and restored.
INDICATOR LIGHT
Before 48 hours have elapsed:
After a Standby Mode has been initiated the Gear Motor
Speed light will flash anytime the toggle switch is placed
in the OFF position.
After 48 hours have elapsed:
The SafeGuard will be automatically erased from
memory and the Gear Motor Speed light will not flash.
If the gear motor speed drops below the minimum range
for 3 continuous seconds during 7 consecutive cycles,
the ice machine will initiate a SafeGuard Mode.
Gear Motor Speed Checklist
Possible Problem ListCorrective Action List
Low water pressureVerify water pressure is between 20 and 80 psig.
Defective motor speed sensorReplace motor speed sensor.
Defective motorReplace motor.
Defective couplerReplace coupler.
Defective evaporator/auger assemblyReplace evaporator assembly.
Low voltageVerify voltage is within
± 10% of nameplate voltage.
Ice frozen to auger/evaporatorAllow evaporator to thaw.
5-4
Part No. 80-1214-3
Section 5Troubleshooting
Revised 8/2003
Temperature is Too High or Low
QF400/QC700/QF800
The temperature sensor (thermistor) is mounted on the
compressor discharge line. The temperature sensor
provides input to the control board. The control board
monitors the temperature anytime the compressor is
energized.
If the thermistor detects 245°F or higher for 15
continuous seconds:
1. The ice machine will de-energize the compressor
and gear motor and initiate a SafeGuard Mode.
2. The control board “Disch Temp” light will continue to
flash twice then pause, to indicate the ice machine
has shut off on high temperature.
3. The ice machine will remain off until the toggle
switch is moved from ICE to OFF, and back to ICE.
or
Line voltage is interrupted and restored.
If the thermistor detects 155°F or less for 3
continuous minutes:
1. The control board ignores the low temperature limit
for the first 30 minutes of compressor run time.
2. The ice machine will de-energize the compressor
and gear motor, continuously flash the control board
“Disch Temp” light and initiate a 60-minute Standby
Mode.
3. After the 60-minute Standby Mode, the ice machine
will de-energize the “Disch Temp” light and initiate a
start-up sequence.
4. After 30 minutes of compressor run time, the ice
machine will check the discharge line temperature.
Discharge line temperature normal:
The ice machine continues to make ice.
Discharge line temperature below 155°F after 30
minutes of run time:
The ice machine will start another 60-minute
Standby Mode.
If the discharge line temperature drops below 155°F for
3 continuous minutes during 7 consecutive cycles the
ice machine will start a SafeGuard Mode.
During the SafeGuard Mode the ”Disch Temp” light will
continually flash to indicate a Safeguard Mode. The ice
machine remains off until:
•The toggle switch is moved from ICE to OFF, then
back to ICE.
•Line voltage is interrupted and restored.
INDICATOR LIGHT
Before 48 hours have elapsed:
After a Standby Mode has been initiated the Control
Board “Disch Temp“ light will flash anytime the toggle
switch is placed in the OFF position.
After 48 hours have elapsed:
The SafeGuard will be automatically erased from memory
and the “Disch Temp” light will not flash.
Temperature Sensor Checklist
QF400/QC700/QF800
Part No. 80-1214-35-5
Possible Problem ListCorrective Action List
Thermistor is not properly insulatedInsulate thermistor.
Thermistor loose Secure thermistor to discharge line.
Thermistor mounted in the wrong locationPosition thermistor on discharge line 6 in. from compressor
discharge port.
Thermistor defectiveRefer to CHECK PROCEDURE under “Thermistor.”
Flooding expansion valveReplace expansion valve.
Refrigerant overcharge or underchargeRecover and weigh in nameplate charge.
Low ambient temperatureVerify ambient temperature remains above 45°F (7.2°C).
Defective compressorReplace compressor.
Insufficient or low water pressureVerify water pressure is between 20 and 80 psig.
TroubleshootingSection 5
Revised 8/2003
Temperature is Too High or Low
QF2200 Only
The temperature sensor (thermistor) is mounted on the
liquid line. The temperature sensor provides input to the
control board. The control board monitors the
temperature anytime the liquid line solenoid valve is
energized.
If the thermistor detects 123°F or higher for 15
continuous seconds:
1. The ice machine will de-energize the compressor
and gear motor and initiate a SafeGuard Mode.
2. The control board “Disch Temp” light will continue to
flash twice then pause, to indicate the ice machine
has shut off on high temperature.
3. The ice machine will remain off until the toggle
switch is moved from ICE to OFF, and back to ICE.
or
Line voltage is interrupted and restored.
If the thermistor detects 30°F or less for 3
continuous minutes:
1. The control board ignores the low temperature limit
for the first 30 minutes of compressor run time.
2. The ice machine will de-energize the liquid line
solenoid valve and gear motor, continuously flash
the control board “Disch Temp” light and initiate a
60-minute Standby Mode.
3. After the 60-minute Standby Mode, the ice machine
will de-energize the “Disch Temp” light and initiate a
start-up sequence.
4. After 30 minutes of compressor run time, the ice
machine will check the liquid line temperature.
Liquid line temperature normal:
The ice machine continues to make ice.
Liquid line temperature 30°F or less after 30 minutes
of run time:
The ice machine will start another 60-minute
Standby Mode.
If the liquid line temperature is 30°F or less for 3
continuous minutes during 7 consecutive cycles the ice
machine will start a SafeGuard Mode.
During the SafeGuard Mode the ”Disch Temp” light will
continually flash to indicate a Safeguard Mode. The ice
machine remains off until:
•The toggle switch is moved from ICE to OFF, then
back to ICE.
•Line voltage is interrupted and restored.
INDICATOR LIGHT
Before 48 hours have elapsed:
After a Standby Mode has been initiated the Control
Board “Disch Temp“ light will flash anytime the toggle
switch is placed in the OFF position.
After 48 hours have elapsed:
The SafeGuard will be automatically erased from memory
and the “Disch Temp” light will not flash.
Temperature Sensor Checklist
QF2200
Possible Problem ListCorrective Action List
Thermistor is not properly insulatedInsulate thermistor.
Thermistor loose Secure thermistor to liquid line.
Thermistor mounted in the wrong locationPosition thermistor on liquid line between heat exchanger and
Thermistor defectiveRefer to CHECK PROCEDURE under “Thermistor.”
Flooding expansion valveReplace expansion valve.
Refrigerant overcharge or underchargeRecover and weigh in nameplate charge.
Low ambient temperatureVerify ambient temperature remains above 45°F (7.2°C).
Headmaster will not bypassReplace headmaster.
Insufficient or low water pressureVerify water pressure is between 20 and 80 psig.
5-6
line drier.
Part No. 80-1214-3
Section 5Troubleshooting
Revised 8/2003
Gear Box Removal
QF400
The evaporator and motor / gearbox are separate
assemblies. Warranty procedures require replacement
of the entire evaporator or motor /gearbox assembly.
Separate components are not available, and field
rebuilding during the warranty period is not allowed.
1. Disconnect power to the ice machine.
2. Remove water level probes, water reservoir cover,
float valve, water reservoir, ice chute, and drain
tubing (refer to Component Removal).
3. Remove bolts securing foundation coupling to gear
motor assembly.
4. Lift evaporator and rest on top of foundation
coupling.
5. Disconnect line voltage wiring at motor Molex
connector.
6. Remove two screws holding motor speed sensor
and remove sensor.
7. Remove coupling, spline hub and keyway from gear
motor.
8. Support motor / gearbox assembly and remove 4
bolts securing gear motor assembly to base.
9. Remove gear motor assembly from ice machine.
10. Apply anti-seize compound to the shaft and all bolts
to ease future disassembly.
QC700/QF800
The evaporator and motor / gearbox are separate
assemblies. Warranty procedures require replacement
of the entire evaporator or motor /gearbox assembly.
Separate components are not available, and field
rebuilding during the warranty period is not allowed.
1. Disconnect power to the ice machine.
2. Remove water level probes, water reservoir cover,
float valve, water reservoir, ice chute, and drain
tubing (refer to Component Removal).
3. Remove bolts securing foundation coupling to gear
motor assembly.
4. Lift evaporator and rest on top of foundation
coupling.
5. Disconnect line voltage wiring at motor Molex
connector.
6. Remove two screws holding motor speed sensor
and remove sensor.
7. Remove bolts securing gear motor assembly
mounting bracket to base.
8. Remove gear motor assembly from ice machine.
9. Remove coupling, spline hub, keyway, and mounting
bracket from gear motor.
10. Apply anti-seize compound to the shaft and all bolts
to ease future disassembly.
Part No. 80-1214-35-7
6
3
SV2046
8
3
7
SV2011
TroubleshootingSection 5
Revised 8/2003
QF2200/QF2300
The evaporator and motor / gearbox are separate
assemblies. Warranty procedures require replacement
of the entire evaporator or motor /gearbox assembly.
Separate components are not available, and field
rebuilding during the warranty period is not allowed.
1. Disconnect power and water supply to the ice
machine and drain all water from the reservoir and
evaporator.
2. Remove reservoir retaining pin, water reservoir, ice
chute, and drain tubing (refer to Component
Removal).
3. Remove bolts securing foundation coupling to base.
4. Lift and support evaporator (evaporator weighs 80
lbs.).
5. Remove gear motor drip shield and disconnect line
voltage wiring at motor Molex connector.
6. Remove two screws holding motor speed sensor
and remove sensor.
7. Remove bolts securing gear motor assembly to
base.
8. Remove gear motor assembly from ice machine.
9. Remove coupling (use a 8 mm hex wrench for
coupling set screw), spline hub and keyway from
gear motor.
10. Apply anti-seize compound to the shaft and all bolts
to ease future disassembly.
6
8
5-8
3
7
SV3017
Part No. 80-1214-3
Section 5Troubleshooting
Revised 8/2003
Evaporator Removal
QF400
The evaporator and motor / gearbox are separate
assemblies. Warranty procedures require replacement
of the entire evaporator or motor /gearbox assembly.
Separate components are not available, and field
rebuilding during the warranty period is not allowed.
1. Disconnect power to the ice machine.
2. Remove water level probes, water reservoir cover,
float valve, water reservoir, ice chute, and drain
tubing (refer to Component Removal).
3. Recover refrigerant and disconnect refrigeration
tubing from evaporator.
4. Remove foundation-coupling bolts.
5. Lift evaporator out of foundation coupling and
remove from ice machine.
6. Remove spline hub and keyway from evaporator.
7. Apply anti-seize compound to the shaft and all bolts
to ease future disassembly.
8. After reinstallation of evaporator, torque foundation
bolts to 195-205 inch lbs.
QC700/QF800
The evaporator and motor / gearbox are separate
assemblies. Warranty procedures require replacement
of the entire evaporator or motor /gearbox assembly.
Separate components are not available, and field
rebuilding during the warranty period is not allowed.
1. Disconnect power to the ice machine.
2. Remove water level probes, water reservoir cover,
float valve, water reservoir, ice chute, and drain
tubing (refer to Component Removal).
3. Recover refrigerant and disconnect refrigeration
tubing from evaporator.
4. Remove foundation-coupling bolts.
5. Lift evaporator out of foundation coupling and
remove from ice machine.
6. Remove spline hub and keyway from evaporator.
7. Apply anti-seize compound to the shaft and all bolts
to ease future disassembly.
8. After reinstallation of evaporator, torque foundation
bolts to 195-205 inch lbs.
Part No. 80-1214-35-9
REMOVE
FOUNDATION BOLTS
SV2046
REMOVE
FOUNDATION BOLTS
SV3057
TroubleshootingSection 5
Revised 8/2003
QF2200/QF2300
The evaporator and motor / gearbox are separate
assemblies. Warranty procedures require replacement
of the entire evaporator or motor /gearbox assembly.
Separate components are not available, and field
rebuilding during the warranty period is not allowed.
1. Disconnect power and water supply to the ice
machine and drain all water from the reservoir and
evaporator.
2. Remove reservoir retaining pin, water reservoir, ice
chute, and drain tubing (refer to Component
Removal).
3. Recover refrigerant and disconnect refrigeration
tubing from evaporator.
4. Remove foundation-coupling bolts.
5. Lift evaporator out of foundation coupling and
remove from ice machine.
6. Remove spline hub and keyway from evaporator
(8 mm hex wrench for coupling set screw).
7. Apply anti-seize compound to the shaft and all bolts
to ease future disassembly.
8. After reinstallation of evaporator, torque foundation
bolts to 195-205 inch lbs.
5-10
REMOVE
FOUNDATION
BOLTS
SV3017
Part No. 80-1214-3
Section 6
Revised 8/2003
Electrical System
Energized Parts Charts
QF400/QC700/QF800
Control RelaysSensors
Ice Making
Sequence Of
Operation
START-UP
1A. Water
Flush
1B. Water FillOffOffOnOn
FREEZE
SEQUENCE
2. Freeze
AUTOMATIC
SHUT-OFF
3A. Ice Run
Out
3B. Drain
Evaporator
AUTOMATIC
SHUT-OFF
When the toggle switch is placed in the ICE position, the following must occur prior to starting an ice making cycle.
A.)The bin level probe must be open (Bin Level light off). If the probe is closed (Bin Level light on) when the toggle switch is moved to ICE, the
control system waits until the bin level probe opens (Bin Level light off) before starting an ice making sequence.
If the bin level probe is disconnected from the control board, the ice machine will not start and will continuously flash the Bin Level light.
The ice machine will remain off until:
1.The bin level probe is reconnected to the circuit board
2.The toggle switch is moved from ICE to OFF, then back to ICE.
B. The water level probe must be closed (Water Level light on) to start the compressor.
If the water level probe is open (Water Level light off), the control system waits until the water level probe closes before starting the compressor.
1234
Contactor
Coil
OffOnOnOff
OnOffOnOn
OffOffOnOn
OffOnOffOff
OffOffOffOff
Dump
Val ve
Gear
Motor
Float
Val ve
Coil
Water
Level
Probe
Not
Sensing for
Water Level
Sensing for
Water Level
Sensing for
Water Level
Sensing for
Water Level
Not
Sensing for
Water Level
Not
Sensing for
Water Level
Bin Level
Probe
Sensing No
Ice Contact
Sensing No
Ice Contact
Sensing No
Ice Contact
Sensing
Ice Contact
Sensing
Ice Contact
Sensing
Ice Contact
Temperature
Sensor
Not Sensing
for
Temperature
Not Sensing
for
Temperature
Sensing for
°F
245
Immediately.
Sensing for
°F after 30
155
min. of Ice
Making
Not Sensing
for
Temperature
Not Sensing
for
Temperature
Not Sensing
for
Temperature
Gear
Motor
Speed
Sensing
for Gear
Motor
Speed
Sensing
for Gear
Motor
Speed
Sensing
for Gear
Motor
Speed
Sensing
for Gear
Motor
Speed
Not
Sensing
for Gear
Motor
Speed
Not
Sensing
for Gear
Motor
Speed
Length
Of Time
45 Seconds
Until Water
Contacts
Water Level
Probe
Until Ice
Contacts Bin
Level Probe for
30 Continuous
Seconds
45 Seconds
45 Seconds
Until Ice No
Longer
Contacts Bin
Level Probe
QC700/QF800
Condenser Fan Motor -The fan motor is wired through a fan cycle pressure control. The fan motor will cycle on/off depending on discharge pressure
8-Minute Lockout - The Bin Level light will flash until the 8-minute lockout expires.
After the 8-minute lockout expires, the Bin Level light will de-energize.
The 8-minute lockout time can be overridden by moving the ICE/OFF/CLEAN toggle switch from ICE to OFF, then back to ICE.
Part No. 80-1214-36-1
Electrical SystemSection 6
Revised 8/2003
Energized Parts Charts
QF2200
Ice Making
Sequence
Of
Operation
START-UP
1A. Water
Flush
1B. Water
Fill
FREEZE
SEQUENCE
2. Freeze
AUTOMATIC
SHUT-OFF
3A. Ice Run
Out
Liquid Line
Solenoid
Val ve
Control RelaysSensors
1234
Dump
Val ve
Gear
Motor
Float
Val ve
Coil
OffOnOnOff
OffOffOnOn
OnOffOnOn
OffOffOnOn
Water
Level
Probe
Not
Sensing for
Water Level
Sensing for
Water Level
Sensing for
Water Level
Sensing for
Water Level
Bin Level
Sensing No
Ice Contact
Sensing No
Ice Contact
Sensing No
Ice Contact
Sensing
Ice Contact
Probe
Temperature
Sensor
Not Sensing
for
Temperature
Not Sensing
for
Temperature
Sensing for
123
°F
Immediately.
Sensing for
°F after 30
30
min. of Ice
Making
Not Sensing
for
Temperature
Gear
Motor
Speed
Sensing
for Gear
Motor
Speed
Sensing
for Gear
Motor
Speed
Sensing
for Gear
Motor
Speed
Sensing
for Gear
Motor
Speed
Length
Of Time
45 Seconds
Until Water
Contacts
Water Level
Probe
Until Ice
Contacts Bin
Level Probe
for 30
Continuous
Seconds
4 Minutes
Not
3B. Drain
Evaporator
OffOnOffOff
Not
Sensing for
Water Level
Sensing
Ice Contact
Not Sensing
for
Temperature
Sensing
for Gear
Motor
90 Seconds
Speed
Not
AUTOMATIC
SHUT-OFF
OffOffOffOff
Not
Sensing for
Water Level
Sensing
Ice Contact
Not Sensing
for
Temperature
Sensing
for Gear
Motor
Speed
*After the liquid line solenoid valve energizes, the suction pressure will rise above the low-pressure switch cut-in (22 psig) and the compressor and
condenser fan motor energize. The condenser fan motor remains energized during the entire freeze cycle, the head pressure control valve controls the discharge pressure.
Until Ice No
Longer
Contacts Bin
Level Probe
When the toggle switch is placed in the ICE position, the following must occur prior to starting an ice making cycle.
A.)The bin level probe must be open (Bin Level light off). If the probe is closed (Bin Level light on) when the toggle switch is moved to ICE, the
control system waits until the bin level probe opens (Bin Level light off) before starting an ice making sequence.
If the bin level probe is disconnected from the control board, the ice machine will not start and will continuously flash the Bin Level light.
The ice machine will remain off until:
1.The bin level probe is reconnected to the circuit board
2.The toggle switch is moved from ICE to OFF, then back to ICE.
B. The water level probe must be closed (Water Level light on) to start the compressor.
If the water level probe is open (Water Level light off), the control system waits until the water level probe closes before starting the compressor.
8-Minute Lockout - The Bin Level light will flash until the 8-minute lockout expires.
After the 8-minute lockout expires, the Bin Level light will de-energize.
The 8-minute lockout time can be overridden by moving the ICE/OFF/CLEAN toggle switch from ICE to OFF, then back to ICE.
6-2
Part No. 80-1214-3
Section 6Electrical System
Revised 8/2003
Energized Parts Charts
QF2300
Control RelaysSensors
1234
Ice Making
Sequence Of
Operation
START-UP
1A. Water
Flush
1B. Water FillOffOffOnOn
FREEZE
SEQUENCE
2. Freeze
AUTO MATIC
SHUT-OFF
3A. Ice Run
Out
3B. Drain
Evaporator
AUTO MATIC
SHUT-OFF
When the toggle switch is placed in the ICE position, the following must occur prior to starting an ice making cycle.
A.)The bin level probe must be open (Bin Level light off). If the probe is closed (Bin Level light on) when the toggle switch is moved to ICE, the control
system waits until the bin level probe opens (Bin Level light off) before starting an ice making sequence.
If the bin level probe is disconnected from the control board, the ice machine will not start and will continuously flash the Bin Level light.
The ice machine will remain off until:
1.The bin level probe is reconnected to the circuit board
2.The toggle switch is moved from ICE to OFF, then back to ICE.
B. The water level probe must be closed (Water Level light on) to start the compressor.
If the water level probe is open (Water Level light off), the control system waits until the water level probe closes before starting the compressor.
Liquid Line
Solenoid/
Equalization
Val ve/
Dump Valve
Gear
Motor
Compressor
OffOnOnOff
OnOffOnOn
OffOffOnOn
Off
On
(90 Seconds)
OffOff
OffOffOffOff
Float
Valve
Coil
Water
Level
Probe
Not
Sensing for
Water
Level
Sensing for
Water
Level
Sensing for
Water
Level
Not
Sensing for
Water
Level
Not
Sensing for
Water
Level
Not
Sensing for
Water
Level
Bin Level
Probe
Sensing No
Ice Contact
Sensing No
Ice Contact
Sensing No
Ice Contact
Sensing
Ice Contact
Sensing
Ice Contact
Sensing
Ice Contact
Gear Motor
Speed
Sensing for
Gear Motor
Speed
Sensing for
Gear Motor
Speed
Sensing for
Gear Motor
Speed
Sensing for
Gear Motor
Speed
Not
Sensing for
Gear Motor
Speed
Not
Sensing for
Gear Motor
Speed
Length
Of Time
45 Seconds
Until Water
Contacts
Water Level
Probe
Until Ice
Contacts Bin
Level Probe
for 3
Continuous
Minutes
4 Minutes
90 Seconds
Until Ice No
Longer
Contacts Bin
Level Probe
8-Minute Lockout - The Bin Level light will flash until the 8-minute lockout expires.
After the 8-minute lockout expires, the Bin Level light will de-energize.
The 8-minute lockout time can be overridden by moving the ICE/OFF/CLEAN toggle switch from ICE to OFF, then back to ICE.
Part No. 80-1214-36-3
Electrical SystemSection 6
Revised 8/2003
Wiring Diagram Sequence of
Operation
QF400
Initial Start-Up or Start-Up After
Automatic Shut-Off
1A. WATER FLUSH
Immediately after placing the toggle
switch in “ICE”, the dump valve
solenoid, and gearbox are energized.
After 45 seconds the dump valve deenergizes.
L1
GROUND
(25)
(51)
CONTACTOR
CONTACTS
(21)
(52)
(22)
L1 T1
RELAY
K2
10 AMP
FUSE
RELAY K4
WATER FLOAT
VALV E COI L
DUMP VALVE
COIL
(41)
RELAY
K1
RELAY
K3
(56)
(55)
(90)
(46)
(10)
HIGH
PRESSURE
CUT-OUT
(47)
(11)
(14)
CONTACTOR
COIL
(95)
GEARMOTOR
GEARMOTOR
RUN CAPACITOR
FAN MOTOR
(AIR-COOLED ONLY)
L2 (N)
(65)
(43)
(48)
RUNSTART
(44)
SV3033
1A. Water Flush (45 Seconds)
Toggle SwitchICE
Bin Level ProbeOpen (No Ice Contact)
Control Board Relays
The gear motor, compressor,
condenser fan motor and water float
valve solenoid remain energized as
the ice machine makes ice. The
water float valve will open and close
automatically to maintain the proper
water level.
L1
GROUND
(25)
(51)
CONTACTOR
CONTACTS
(21)
(52)
(22)
L1 T1
RELAY
K2
10 AMP
FUSE
RELAY K4
WATER FLOAT
VALV E COI L
DUMP VALVE
COIL
(41)
RELAY
K1
RELAY
K3
(56)
(55)
(90)
(46)
(10)
HIGH
PRESSURE
CUT-OUT
(47)
(11)
(14)
CONTACTOR
COIL
(95)
GEARMOTOR
GEARMOTOR
RUN CAPACITOR
FAN MOTOR
(AIR-COOLED ONLY)
L2 (N)
(65)
(43)
(48)
RUNSTART
(44)
SV3036
2. Freeze (Until Ice Contacts Bin Level Probe for 30 Continuous Seconds)
Toggle SwitchICE
Bin Level ProbeOpen (No Ice Contact)
Control Board Relays
Ice will build up in the bin until it
contacts the bin level probe. After ice
contacts the bin level probe for 30
continuous seconds the compressor
de-energizes. To allow excess ice to
run out, the gear motor and the water
float valve solenoid remain energized
for an additional 45 seconds, then
de-energize.
L1
GROUND
(25)
(51)
CONTACTOR
CONTACTS
(21)
(52)
(22)
L1 T1
RELAY
K2
10 AMP
FUSE
RELAY K4
WATER FLOAT
VALV E COI L
DUMP VALVE
COIL
(41)
RELAY
K1
RELAY
K3
(56)
(55)
(90)
(46)
(10)
HIGH
PRESSURE
CUT-OUT
(47)
(11)
(14)
CONTACTOR
COIL
(95)
GEARMOTOR
GEARMOTOR
RUN CAPACITOR
FAN MOTOR
(AIR-COOLED ONLY)
L2 (N)
(65)
(43)
(48)
RUNSTART
(44)
SV3037
3A. Ice Run Out (45 Seconds)
Toggle SwitchICE
Bin Level ProbeClosed (Ice Contacting Probe)
Control Board Relays
An 8 minute lockout starts when the
compressor de-energizes. When the
ice drops away from the bin level
probe the ice machine will begin an
initial start-up cycle, provided the “8
minute lock-out” has expired.
8 Minute Lock-out
The bin level light will flash until the 8
minute lock-out expires.
After the 8 minute lock-out expires
the bin level light will de-energize.
The 8 minute lock-out time can be
overridden by moving the ON/OFF/
ICE toggle switch from ICE to OFF
then back to ICE.
L1
GROUND
(25)
(51)
CONTACTOR
CONTACTS
(21)
(52)
(22)
L1 T1
RELAY
K2
10 AMP
FUSE
RELAY K4
WATER FLOAT
VALV E COI L
DUMP VALVE
COIL
(41)
RELAY
K1
RELAY
K3
(56)
(55)
(90)
(46)
(10)
HIGH
PRESSURE
CUT-OUT
(47)
(11)
(14)
CONTACTOR
COIL
(95)
GEARMOTOR
GEARMOTOR
RUN CAPACITOR
FAN MOTOR
(AIR-COOLED ONLY)
L2 (N)
(65)
(43)
(48)
RUNSTART
(44)
SV3039
Automatic Shut-Off (Until Ice No Longer Contacts Bin Level Probe)
Toggle SwitchICE
Bin Level ProbeClosed (Ice Contacting Probe)
Control Board Relays
Initial Start-Up or Start-Up After
Automatic Shut-Off
1A. WATER FLUSH
Immediately after placing the toggle
switch in “ICE”, the dump valve
solenoid, and gearbox are energized.
After 45 seconds the dump valve deenergizes.
L1
GROUND
(51)
(25)
(21)
(52)
(22)
RELAY
K2
10 AMP
FUSE
RELAY K4
(41)
RELAY
K1
RELAY
K3
DUMP VALVE COIL
CONTACTOR
CONTACTS
PRESSURE
CUT-OUT
(90)
(46)
WATER FLOAT
VALV E COI L
FAN CYCLE
CONTROL
L1 T1
HIGH
(95)
(55)
(49)
FAN MOTOR
(AIR-COOLED ONLY)
OVERLOAD
C5
C2
C1
(31)
CAPACITOR
CONTACTOR
COIL
GEARMOTOR
(21)
(22)
(56)
RUN CAPACITOR
C
COMPRESSOR
R
S
RUN
CAPACITOR
START
(65)
(62)
(61)
(43)
(45)
L2 (N)
C4
POTENTIA
RELAY
RUN
CAPACITOR
C4
POTENTIAL
RELAY
CONTACTO
COIL
C4
POTENTIAL
RELAY
C4
POTENTIA
RELAY
SV3123
1A. Water Flush (45 Seconds)
Toggle SwitchICE
Bin Level ProbeOpen (No Ice Contact)
Control Board Relays
The gear motor, compressor,
condenser fan motor and water float
valve solenoid remain energized as
the ice machine makes ice. The
water float valve will open and close
automatically to maintain the proper
water level.
L1
GROUND
(51)
(25)
(21)
(52)
(22)
RELAY
K2
10 AMP
FUSE
RELAY K4
(41)
RELAY
K1
RELAY
K3
DUMP VALVE COIL
CONTACTOR
CONTACTS
PRESSURE
CUT-OUT
(90)
(46)
WATER FLOAT
VALVE COIL
FAN CYCLE
CONTROL
L1 T1
HIGH
(95)
(55)
(AIR-COOLED ONLY)
OVER LOAD
C5
(49)
C2
C1
(31)
CAPACITOR
CONTACTOR
COIL
GEARMOTOR
(21)
(22)
(56)
FAN MOTOR
RUN CAPACITOR
C
COMPRESSOR
R
S
RUN
CAPACITOR
START
(65)
(62)
(61)
(43)
(45)
L2 (N)
C4
POTENTIAL
RELAY
RUN
CAPACITOR
C4
POTENTIAL
RELAY
CONTACTO
COIL
C4
POTENTIAL
RELAY
C4
POTENTIAL
RELAY
SV3125
2. Freeze (Until Ice Contacts Bin Level Probe for 30 Continuous Seconds)
Toggle SwitchICE
Bin Level ProbeOpen (No Ice Contact)
Control Board Relays
Ice will build up in the bin until it
contacts the bin level probe. After ice
contacts the bin level probe for 30
continuous seconds the compressor
de-energizes. To allow excess ice to
run out, the gear motor and the water
float valve solenoid remain energized
for an additional 45 seconds, then
de-energize.
L1
GROUND
(51)
(25)
(21)
(52)
(22)
RELAY
K2
10 AMP
FUSE
RELAY K4
(41)
RELAY
K1
RELAY
K3
DUMP VALVE COIL
CONTACTOR
CONTACTS
PRESSURE
CUT-OUT
(90)
(46)
WATER FLOAT
VALV E COI L
FAN CYCLE
CONTROL
L1 T1
HIGH
(95)
(55)
(49)
FAN MOTOR
(AIR-COOLED ONLY)
RUN CAPACITOR
OVERLOAD
C5
C2
C1
(31)
CAPACITOR
CONTACTOR
COIL
GEARMOTOR
(21)
(22)
C
COMPRESSOR
S
RUN
CAPACITOR
START
(56)
R
(65)
(62)
(61)
(43)
(45)
L2 (N)
C4
POTENTIA
RELAY
RUN
CAPACITO
C4
POTENTIAL
RELAY
CONTACTO
COIL
C4
POTENTIAL
RELAY
C4
POTENTIA
RELAY
SV3126
3A. Ice Run Out (45 Seconds)
Toggle SwitchICE
Bin Level ProbeClosed (Ice Contacting Probe)
Control Board Relays
An 8 minute lockout starts when the
compressor de-energizes. When the
ice drops away from the bin level
probe the ice machine will begin an
initial start-up cycle, provided the “8
minute lock-out” has expired.
8 Minute Lock-out
The bin level light will flash until the 8
minute lock-out expires.
After the 8 minute lock-out expires
the bin level light will de-energize.
The 8 minute lock-out time can be
overridden by moving the ON/OFF/
ICE toggle switch from ICE to OFF
then back to ICE.
L1
GROUND
(51)
(25)
(21)
(52)
(22)
RELAY
K2
10 AMP
FUSE
RELAY K4
(41)
RELAY
K1
RELAY
K3
DUMP VALVE COIL
CONTACTOR
CONTACTS
PRESSURE
CUT-OUT
(90)
(46)
WATER FLOAT
VALV E COI L
FAN CYCLE
CONTROL
L1 T1
HIGH
(95)
(55)
(49)
FAN MOTOR
(AIR-COOLED ONLY)
RUN CAPACITOR
OVERLOAD
C5
C2
C1
(31)
CAPACITOR
CONTACTOR
COIL
GEARMOTOR
(21)
(22)
C
COMPRESSOR
S
RUN
CAPACITOR
START
(56)
R
(65)
(62)
(61)
(43)
(45)
L2 (N)
C4
POTENTIA
RELAY
RUN
CAPACITO
C4
POTENTIAL
RELAY
CONTACTO
COIL
C4
POTENTIAL
RELAY
C4
POTENTIA
RELAY
SV3128
Automatic Shut-Off (Until Ice No Longer Contacts Bin Level Probe)
Toggle SwitchICE
Bin Level ProbeClosed (Ice Contacting Probe)
Control Board Relays
Initial Start-Up or Start-Up After
Automatic Shut-Off
1A. WATER FLUSH
Immediately after placing the toggle
switch in “ICE”, the dump valve
solenoid, and gearbox are energized.
After 45 seconds the dump valve deenergizes.
L1
GROUND
(25)
(51)
(52)
RELAY
K2
7 AMP
FUSE
RELAY K4
(22)
RELAY
K1
RELAY
K3
WATER FLOAT
VALV E COI L
DUMP VALVE
COIL
(65)
(54)
INTERNAL
OVERLOAD
(56)
(55)
LIQUID LINE
SOLENOID
CENTRIFUGAL
SWITCH
START
RUN
GEARMOTOR
L2
(53)
SV3043
1A. Water Flush (45 Seconds)
Toggle SwitchICE
Bin Level ProbeOpen (No Ice Contact)
Control Board Relays
1A. Water Flush (45 Seconds)
High Pressure ControlCLOSED
Low Pressure ControlOPEN
Contactor CoilOPEN / OFF
CompressorOFF
Condenser Fan MotorOFF
Part No. 80-1214-36-17
Electrical SystemSection 6
Revised 8/2003
QF2200
Initial Start-Up
1B. WATER FILL
After 45 seconds the water float valve
solenoid is energized. When water
contacts the water level probe the
liquid line solenoid valve energizes
and remains on throughout the
Freeze Cycle.
L1
GROUND
(25)
RELAY
K2
7 AMP
FUSE
RELAY K4
RELAY
K1
RELAY
K3
(65)
(54)
CENTRIFUGAL
INTERNAL
OVERLOAD
GEARMOTOR
LIQUID LINE
SOLENOID
SWITCH
START
RUN
L2
(53)
(52)
(22)
(51)
WATER FLOAT
VALV E COI L
DUMP VALVE
COIL
(56)
(55)
SV3044
1B. Water Fill (Until Water Contacts Water Level Probe)
Toggle SwitchICE
Bin Level ProbeOpen (No Ice Contact)
Control Board Relays
1B. Water Flush (Until Water Contacts Water Level Probe)
High Pressure ControlCLOSED
Low Pressure ControlOPEN
Contactor CoilOPEN / OFF
CompressorOFF
Condenser Fan MotorOFF
SV3040
Part No. 80-1214-36-19
Electrical SystemSection 6
Revised 8/2003
QF2200
Freeze Cycle
2. FREEZE
The gear motor, liquid line solenoid
valve and water float valve solenoid
remain energized as the ice machine
makes ice. The water float valve will
open and close automatically to
maintain the proper water level.
L1
GROUND
(25)
(51)
(52)
RELAY
K2
7 AMP
FUSE
RELAY K4
(22)
RELAY
K1
RELAY
K3
WATER FLOAT
VALVE COIL
DUMP VALVE
COIL
(65)
(54)
INTERNAL
OVER LOAD
(56)
(55)
LIQUID LINE
SOLENOID
CENTRIFUGAL
SWITCH
START
RUN
GEARMOTOR
L2
(53)
SV3046
2. Freeze (Until Ice Contacts Bin Level Probe for 30 Continuous Seconds)
Toggle SwitchICE
Bin Level ProbeOpen (No Ice Contact)
Control Board Relays
Refrigerant pressure exceeds the low
pressure control setpoint. The
contactor coil energizes and the
contacts close. The compressor and
condenser fan motor energize and
remain on throughout the entire
freeze cycle.
L1
OVERLOAD
GROUND
(94)
(96)
HIGH PRESSURE
CONTACTOR
CONTACTS
CUT-OUT
COMPRESSOR
C
R
(48)
(43)
COMPRESSOR
CRANKCASE
LOW PRESSURE
CUT-OUT
FAN MOTO R
CAPACITOR
(49)
(47)
S
52 1
RELAY
HEATER
RUN
RUN
CAPACITOR
(46)
(44)
CAPACITOR
CONTACTOR
COIL
CONTACTOR
CONTACTS
(45)
START
L2
(95)
(74)
(50)
2. Freeze (Until Ice Contacts Bin Level Probe for 30 Continuous Seconds)
High Pressure ControlCLOSED
Low Pressure ControlCLOSED
Contactor CoilCLOSED / ON
CompressorON
Condenser Fan MotorON
SV3042
Part No. 80-1214-36-21
Electrical SystemSection 6
Revised 8/2003
QF2200
Automatic Shut-Off
3A. ICE RUN OUT
Ice will build up in the bin until it
contacts the bin level probe. After ice
contacts the bin level probe for 30
continuous seconds the liquid line
solenoid valve de-energizes. To allow
excess ice to run out, the gear motor
and the water float valve solenoid
remain energized for an additional 4
minutes, then de-energize.
L1
GROUND
(25)
(51)
RELAY K4
(52)
(22)
RELAY
K2
7 AMP
FUSE
RELAY
K1
RELAY
K3
WATER FLOAT
VALV E COI L
DUMP VALVE
COIL
(65)
(54)
INTERNAL
OVERLOAD
(56)
(55)
LIQUID LINE
SOLENOID
CENTRIFUGAL
SWITCH
START
RUN
GEARMOTOR
L2
(53)
SV3047
3A. ICE RUN OUT (45 Seconds)
Toggle SwitchICE
Bin Level ProbeCLOSED ( Ice Contacting probe)
Control Board Relays
When the refrigerant pressure is low
enough to open the low-pressure
switch, the contactor coil is deenergized and the compressor and
condenser fan motor stop.
L1
GROUND
(96)
CONTACTOR
CONTACTS
OVER LOAD
(94)
HIGH PRESSURE
CUT-OUT
COMPRESSOR
(43)
C
(48)
COMPRESSOR
CRANKCASE
HEATER
RUN
(44)
CAPACITOR
CONTACTOR
COIL
START
LOW PRESSURE
CUT-OUT
FAN MOTOR
RUN
CAPACITOR
(49)
(47)
S
R
CAPACITOR
(46)
52 1
RELAY
(95)
(74)
CONTACTOR
CONTACTS
(50)
(45)
L2
3. Automatic Shut-Off (45 Seconds)
High Pressure ControlCLOSED
Low Pressure ControlOPEN
Contactor CoilOPEN / OFF
CompressorOFF
Condenser Fan MotorOFF
SV3040
Part No. 80-1214-36-23
Electrical SystemSection 6
Revised 8/2003
QF2200
Automatic Shut-Off
3B. WATER DRAIN
To allow water to drain from the
evaporator, the dump valve energizes
for 90 seconds, then de-energizes.
An 8 minute lockout starts when the
compressor de-energizes. When the
ice drops away from the bin level
probe the ice machine will begin an
initial start-up cycle, provided the “8
minute lockout” has expired.
L1
GROUND
(25)
(51)
RELAY K4
(52)
(22)
RELAY
K2
7 AMP
FUSE
RELAY
K1
RELAY
K3
WATER FLOAT
VALV E COI L
DUMP VALVE
COIL
(65)
(54)
INTERNAL
OVERLOAD
(56)
(55)
LIQUID LINE
SOLENOID
CENTRIFUGAL
SWITCH
START
RUN
GEARMOTOR
L2
(53)
SV3048
3B. Water Drain (90 Seconds)
Toggle SwitchICE
Bin Level ProbeCLOSED ( Ice Contacting probe)
Control Board Relays
An 8 minute lockout starts when the
compressor de-energizes. When the
ice drops away from the bin level
probe the ice machine will begin an
initial start-up cycle, provided the “8
minute lockout” has expired.
8 Minute Lockout
The bin level light will flash until the 8
minute lockout expires. After the 8
minute lockout time can be
overridden by moving the ON/OFF/
CLEAN toggle switch for ICE to OFF
and back to ICE.
L1
GROUND
(25)
(51)
RELAY K4
(52)
RELAY
(22)
K2
7 AMP
FUSE
RELAY
K1
RELAY
K3
WATER FLOAT
VALV E COI L
DUMP VALVE
COIL
(65)
(54)
INTERNAL
OVERLOAD
(56)
(55)
LIQUID LINE
SOLENOID
CENTRIFUGAL
SWITCH
START
RUN
GEARMOTOR
L2
(53)
SV3048
Automatic Shut-Off (Until Ice No Longer Contacts Bin Level Probe)
Toggle SwitchICE
Bin Level ProbeCLOSED ( Ice Contacting probe)
Control Board Relays
Initial Start-Up or Start-Up After
Automatic Shut-Off
1A. WATER FLUSH
Immediately after placing the toggle
switch in “ICE”, the dump valve
solenoid, and gearbox are energized.
After 45 seconds the dump valve deenergizes.
L1
GROUND
(25)
(51)
RELAY
K2
7 AMP
FUSE
RELAY K4
(52)
(22)
(91)
RELAY
K1
RELAY
K3
WATER FLOAT
VALVE
DUMP VALVE
(65)
INTERNAL
OVERLOAD
(55)
C1
(54)
(58)
CENTRIFUGAL
GEARMOTOR
(56)
C2
LIQUID LINE
SOLENOID
EQUALIZATION
SOLENOID
SWITCH
START
RUN
L2
(53)
(57)
(22)
SV2109
1A. Water Flush (45 Seconds)
Toggle SwitchICE
Bin Level ProbeOpen (No Ice Contact)
Control Board Relays
Immediately after placing the toggle
switch in “ICE”, the dump valve
solenoid, and gearbox are energized.
After 45 seconds the dump valve deenergizes.
L1
GROUND
(94)
C1
(96)
CONTACTOR
CONTACTS
HIGH PRESSURE
CUT-OUT
COMPRESSOR
CRANKCASE
HEATER
(85)
LOW PRESSURE
CUT-OUT
FAN M OTO R
RUN
CAPACITOR
CONTACTOR
COIL
CONTACTOR
CONTACTS
L2
(95)
C2
(74)
(50)
(45)
OVER LOAD
COMPRESSOR
C
R
(48)
(43)
S
(49)
(47)
CAPACITOR
(46)
52 1
RELAY
RUN
(44)
CAPACITOR
START
1A. Water Flush (45 Seconds)
High Pressure ControlCLOSED
Low Pressure ControlOPEN
Contactor CoilOPEN / OFF
CompressorOFF
Condenser Fan MotorOFF
SV2121
Part No. 80-1214-36-27
Electrical SystemSection 6
Revised 8/2003
QF2300
Initial Start-Up
1B. WATER FILL
After 45 seconds the water float valve
solenoid is energized.
L1
GROUND
(25)
(51)
RELAY
K2
7 AMP
FUSE
RELAY K4
(52)
(22)
RELAY
K1
RELAY
K3
WATER FLOAT
VALVE
(91)
(65)
C1
INTERNAL
OVERLOAD
(55)
(54)
(58)
CENTRIFUGAL
SWITCH
GEARMOTOR
(56)
C2
LIQUID LINE
SOLENOID
EQUALIZATION
SOLENOID
START
RUN
L2
(53)
(57)
(22)
DUMP VALVE
SV2110
1B. Water Fill (Until Water Contacts Water Level Probe)
Toggle SwitchICE
Bin Level ProbeOpen (No Ice Contact)
Control Board Relays
After 45 seconds the water float valve
solenoid is energized.
L1
OVERLOAD
GROUND
(94)
C1
(96)
CONTACTOR
CONTACTS
HIGH PRESSURE
CUT-OUT
COMPRESSOR
(43)
C
(48)
S
R
COMPRESSOR
CRANKCASE
HEATER
(85)
LOW PRESSURE
CUT-OUT
FAN MOTOR
RUN
CAPACITOR
(49)
(47)
CAPACITOR
(46)
52 1
RELAY
RUN
(44)
CAPACITOR
CONTACTOR
COIL
CONTACTOR
CONTACTS
(45)
START
L2
(95)
C2
(74)
(50)
1B. Water Flush (Until Water Contacts Water Level Probe)
High Pressure ControlCLOSED
Low Pressure ControlOPEN
Contactor CoilOPEN / OFF
CompressorOFF
Condenser Fan MotorOFF
SV2121
Part No. 80-1214-36-29
Electrical SystemSection 6
Revised 8/2003
QF2300 Ice Machine Head Section
Freeze Cycle
2. FREEZE
When water contacts the water level
probe the liquid line solenoid valve,
equalization valve, compressor and
condenser fan motor energize. The
gear motor, compressor, condenser
fan motor and water float valve
solenoid remain energized as the ice
machine makes ice. The water float
valve will open and close
automatically to maintain the proper
water level.
L1
GROUND
(25)
(51)
RELAY
K2
7 AMP
FUSE
RELAY K4
(52)
(22)
RELAY
K1
RELAY
K3
WATER FLOAT
VALVE
DUMP VALVE
(91)
(65)
INTERNAL
OVERLOAD
(55)
C1
(54)
(58)
CENTRIFUGAL
GEARMOTOR
(56)
C2
LIQUID LINE
SOLENOID
EQUALIZATION
SOLENOID
SWITCH
START
RUN
L2
(53)
(57)
(22)
SV2111
2. Freeze (Until Ice Contacts Bin Level Probe for 30 Continuous Seconds)
Toggle SwitchICE
Bin Level ProbeOpen (No Ice Contact)
Control Board Relays
The compressor and condenser fan
motor remain energized during the
entire Freeze Cycle.
L1
GROUND
(94)
C1C2
(96)
HIGH PRESSURE
CONTACTOR
CONTACTS
OVERLOAD
CUT-OUT
COMPRESSOR
C
R
(48)
(43)
COMPRESSOR
CRANKCASE
(85)
LOW PRESSURE
CUT-OUT
FAN MOTO R
CAPACITOR
(49)
(47)
S
52 1
RELAY
HEATER
RUN
RUN
CAPACITOR
(46)
(44)
CAPACITOR
CONTACTOR
COIL
CONTACTOR
(45)
START
L2
(95)
(74)
CONTACTS
(50)
2. Freeze (Until Ice Contacts Bin Level Probe for 30 Continuous Seconds)
High Pressure ControlCLOSED
Low Pressure ControlCLOSED
Contactor CoilCLOSED / ON
CompressorON
Condenser Fan MotorON
SV2122
Part No. 80-1214-36-31
Electrical SystemSection 6
Revised 8/2003
QF2300
Automatic Shut-Off
3A. ICE RUN OUT
Ice will build up in the bin until it
contacts the bin level probe. After ice
contacts the bin level probe for 30
continuous seconds the liquid line
solenoid valve, equalization valve
and compressor de-energize. To
allow excess ice to run out, the gear
motor and the water float valve
solenoid remain energized for an
additional 4 minutes, then deenergize.
L1
GROUND
(25)
(51)
RELAY
K2
7 AMP
FUSE
RELAY K4
(52)
(22)
RELAY
K1
RELAY
K3
WATER FLOAT
VALVE
(91)
(65)
C1
INTERNAL
OVERLOAD
(55)
(54)
(58)
CENTRIFUGAL
SWITCH
GEARMOTOR
(56)
C2
LIQUID LINE
SOLENOID
EQUALIZATION
SOLENOID
START
RUN
L2
(53)
(57)
(22)
DUMP VALVE
SV2110
3A. ICE RUN OUT (45 Seconds)
Toggle SwitchICE
Bin Level ProbeCLOSED ( Ice Contacting probe)
Control Board Relays
When the refrigerant pressure is low
enough to open the low-pressure
switch, the contactor coil is deenergized and the compressor and
condenser fan motor stop.
L1
GROUND
C1
(96)
CONTACTOR
CONTACTS
OVER LOAD
(94)
HIGH PRESSURE
CUT-OUT
COMPRESSOR
(43)
C
(48)
COMPRESSOR
CRANKCASE
HEATER
(85)
CONTACTOR
LOW PRESSURE
CUT-OUT
FAN M OTO R
RUN
CAPACITOR
(49)
(47)
S
R
52 1
RELAY
RUN
CAPACITOR
(46)
(44)
COIL
START
CAPACITOR
(95)
(74)
CONTACTOR
CONTACTS
(50)
(45)
L2
C2
3. Automatic Shut-Off (45 Seconds)
High Pressure ControlCLOSED
Low Pressure ControlOPEN
Contactor CoilOPEN / OFF
CompressorOFF
Condenser Fan MotorOFF
SV2121
Part No. 80-1214-36-33
Electrical SystemSection 6
Revised 8/2003
QF2300
Automatic Shut-Off
3B. WATER DRAIN
To allow water to drain from the
evaporator, the dump valve energizes
for 90 seconds, then de-energizes.
An 8 minute lockout starts when the
compressor de-energizes. When the
ice drops away from the bin level
probe the ice machine will begin an
initial start-up cycle, provided the “8
minute lockout” has expired.
L1
GROUND
(25)
(51)
RELAY
K2
7 AMP
FUSE
RELAY K4
(52)
(22)
RELAY
K1
RELAY
K3
WATER FLOAT
VALV E
DUMP VALVE
(91)
(65)
C1
INTERNAL
OVER LOAD
(55)
(54)
(58)
CENTRIFUGAL
SWITCH
GEARMOTOR
(56)
C2
LIQUID LINE
SOLENOID
EQUALIZATION
SOLENOID
START
RUN
L2
(53)
(57)
(22)
SV2112
3B. Water Drain (90 Seconds)
Toggle SwitchICE
Bin Level ProbeCLOSED ( Ice Contacting probe)
Control Board Relays
An 8 minute lockout starts when the
compressor de-energizes. When the
ice drops away from the bin level
probe the ice machine will begin an
initial start-up cycle, provided the “8
minute lockout” has expired.
8 Minute Lockout
The bin level light will flash until the 8
minute lockout expires. After the 8
minute lockout time can be
overridden by moving the ON/OFF/
CLEAN toggle switch for ICE to OFF
and back to ICE.
L1
GROUND
(25)
(51)
RELAY
K2
7 AMP
FUSE
RELAY K4
(52)
(22)
RELAY
K1
RELAY
K3
WATER FLOAT
VALVE
(91)
(65)
C1
INTERNAL
OVERLOAD
(55)
(54)
(58)
CENTRIFUGAL
SWITCH
GEARMOTOR
(56)
C2
LIQUID LINE
SOLENOID
EQUALIZATION
SOLENOID
START
RUN
(53)
L2
(57)
(22)
DUMP VALVE
SV2113
Automatic Shut-Off (Until Ice No Longer Contacts Bin Level Probe)
Toggle SwitchICE
Bin Level ProbeCLOSED ( Ice Contacting probe)
Control Board Relays