Manitowoc Ice RF2379R Installation Manual
Flake & Nugget Ice Machines
RF / RFS / RNS Models
Installation, Operation and Maintenance Manual
This manual is updated as new information and models are released. Visit our website for the latest manual.
Part Number: 0000007644 8/14
Section 1
General Information
Model Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
RF2300 Bin Adapter Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Section 2
Installation Instructions
Location of Ice Machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Installation Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Water and Drain Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Electrical Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Maximum Breaker Size & Minimum Circuit Amperage Chart . . . . . . . . . . . . . . . . 10
Refrigeration System Installation
Remote Condensing Unit Only . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Refrigeration Line Set Installation
Remote Condensing Unit Only . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Installation Check List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Additional Checks for QuietQube Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Table of Contents
UnderCounter Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Modular Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Clearance Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Potable Water Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Water Supply and Drain Line Sizing/Connections . . . . . . . . . . . . . . . . . . . . . . . 8
Drain Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Fuse/Circuit Breaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Ground Fault Circuit Interrupter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Minimum Power Cord Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
For United Kingdom Only . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
QuietQube Remote Condensing Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
A. Line Set Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
B. Line Set Rise or Drop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
C. Suction Line Oil Traps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Section 3
Operation
Evaporator Low Temperature Safety Thermostat and Bin Thermostat . . . . . . . . 19
RF0244/RF0266/RF0385/
RF0388/RF0399/RF0644 & RNS0244/RNS0385 Operation . . . . . . . . . . . . . . . . . . . 19
RFS0300 & RNS0300 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
RFS0650/RFS1200/RFS2300/RF1200/RF2300 Operation . . . . . . . . . . . . . . . . . . . . 20
2 Part Number 000007644 8/14
Section 4
Maintenance
Section 5
Customer Support
Table of Contents (continued)
Interior Cleaning and Sanitizing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Cleaning/Sanitizing Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Heavily Scaled Cleaning Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Exterior Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Cleaning/Sanitizing Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Procedure to Clean Heavily Scaled Flake Ice Machines . . . . . . . . . . . . . . . . . . . 22
Removal of Parts for Cleaning/Sanitizing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Ice Chute Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Air-Cooled Condenser Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Arctic Pure Water Filter System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Manitowoc Cleaner and Sanitizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Commercial Ice Machine Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Residential Ice Machine Limited Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Part Number 000007644 8/14 3
Table of Contents (continued)
THIS PAGE INTENTIONALLY LEFT BLANK
4 Part Number 000007644 8/14
Section 1
!
Warning
!
Warning
!
Caution
General Information
Model Numbers
This manual covers the following models:
FLAKE UNDERCOUNTER MODELS NUGGET UNDERCOUNTER MODELS
Self-Contained
Air-Cooled
RF0244A
RF0266A
RF0385A
RF0399A
RF0644A
NUGGET MODULAR MODELS
Self-Contained
Air-Cooled
RNS0308A --- --- --- --RNS0608A RNS0609W --- --- --RNS1008A RNS1009W --- RNS1078C RCU1098
FLAKE MODULAR MODELS
Self-Contained
Air-Cooled
RFS0300A --- --- --- --RFS0650A RFS0650W ---- --- --RFS1200A RFS1200W RFS1279R RFS1278C RCU1075
RF2300A RF2300W RFS2379R RFS2378C RCU2375
Self-Contained
Water-Cooled
Self-Contained
Water-Cooled
Rack Unit
Head Section
Rack Unit
Head Section
Self-Contained
Air-Cooled
RNS0244A
RNS0385A
QuietQube
Head Section
QuietQube
Head Section
Condensing Unit
Condensing Unit
RCU Remote
RCU Remote
Remove all ice machine panels before lifting and
installing.
PERSONAL INJURY POTENTIAL
Do not operate equipment that has been misused,
abused, neglected, damaged, or altered/modified
from that of original manufactured specifications.
This appliance is not intended for use by persons
(including children) with reduced physical, sensory
or mental capabilities, or lack of experience and
knowledge, unless they have been given
supervision concerning use of the appliance by a
person responsible for their safety.
Part Number 000007644 8/14 5
Flake ice machines must be installed on a bin. Flake
ice machines cannot be installed on dispensers.
General Information Section 1
!
Warning
Adapters
RF2300 BIN ADAPTER INSTALLATION
PERSONAL INJURY POTENTIAL
RF2300 ice machines are not approved for use on
B970 bins. RF2300 ice machines ship with a bracket
that must be used when installing on B1100 and
B1400 Series bins.
1. Refer to diagram. Place bracket on bin top and slide
back to engage.
2. Place ice machine on bin: ice machine must fit
between bracket and front ridge.
6
Part Number 000007644 8/14
Section 2
Installation Instructions
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 50°F (10°C), but
must not exceed 110°F (43°C).
• The water temperature must be at least 40°F (4°C),
but must not exceed 90°F (32°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.
CLEARANCE REQUIREMENTS
Undercounter Units Air-Cooled Water-Cooled
Top 0” (0 cm) 0” (0 cm)
Sides 2” (5 cm) 2” (5 cm)
Back 8" (20 cm) 8" (20 cm)
NOTE: Allowance must be made for removal when the ice machine is built in.
Monthly removal of the top panel is required for cleaning & sanitizing.
Modular Units
Top/Sides 8" (20 cm) 8" (20 cm) 0" (0 cm)
Back 5" (13 cm) 5" (13 cm) 0" (0 cm)
RCU Units Remote Condensing Unit
Front/Back 24" (61 cm)
Sides/Top 6" (15.2 cm)
NOTE: Water-cooled/Remote condensing units only - there is no minimum
clearance required. This value is recommended for efficient operation and
servicing only.
Air-
Cooled
Water-
Cooled
QuietQube
Air-Cooled
Installation Requirements
• The ice machine and bin must be level.
• Vent the ice machine and bin drains separately.
• Bin drain termination must have an air gap.
• A backflow preventer is required on water inlet lines.
• The ice machine and bin must be sanitized after
installation.
• Local water conditions may require treatment of the
water to inhibit scale formation, filter sediment, and
remove chlorine odor and taste.
• Routine adjustments and maintenance procedures
outlined in this manual are not covered by the
warranty.
Ice Machine Heat of Rejection
Series
Ice Machine
RFS1279R 7850
RFS2379R 15700
B.T.U./Hour
Heat of Rejection
Ice machines, like other refrigeration equipment, reject
heat through the condenser. It is helpful to know the
amount of heat rejected by the ice machine when sizing
air conditioning equipment.
This information is also necessary when evaluating the
benefits of using water-cooled or remote condensers to
reduce air conditioning loads. The amount of heat added
to an air conditioned environment by an ice machine
using a water-cooled or remote condenser is negligible.
Knowing the amount of heat rejected is also important
when sizing a cooling tower for a water-cooled
condenser. Use the peak figure for sizing the cooling
tower.
Rack Unit Connection Size
Model Suction Line Liquid Line
RFS1279R
RFS2379R
5/8 inch
(15.9 mm)
3/4 inch
(19 mm)
3/8 inch
(9.5 mm)
1/2 inch
(12.7 mm)
Part Number 000007644 8/14 7
Installation Instructions Section 2
!
Caution
Water and Drain Requirements
POTABLE WATER REQUIREMENTS
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 of 80 psig
(552 kPA) recommended pressure, obtain a water
pressure regulator from your Manitowoc distributor.
• Install a water shut-off valve and unio n for both the
ice making and condenser water lines.
• Insulate water inlet lines to prevent condensation.
• Plumbing must conform to local codes.
Do not apply heat to water valve inlet fitting or over
tighten. This will damage plastic water inlet
connection.
COOLING TOWER APPLICATIONS
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 rejectio n, and
pressure drop through the condenser and water valves
(inlet and outlet) when using a cooling tower on an ice
machine.
• Water entering the co ndenser must not be lower than
37°F (3°C) or exceed 90°F (32°C).
• Water flow through the con denser must not exceed 5
gal. (19 L) 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°C).
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" (46 cm) vent. Do not
vent the condenser drain on water-cooled models.
• Drains must have a union or other suitable means to allow
in place disconnection from the ice machine when
servicing is required.
8
Part Number 000007644 8/14
Section 2 Installation Instructions
VENT TUBE
18" (46 CM)
LONG
ROUTE
DRAIN
TUBING TO
OPEN SITE
DRAIN
ICE MAKING
WATER INLET
TUBING 3/8" MIN.
I.D. (.95 CM)
VENT TUBE
18" (46 CM)
LONG
SEPERATE BIN AND ICE
MACHINE DRAINS ARE
REQUIRED
ROUTE DRAIN TUBING TO
OPEN SITE DRAIN
WATER SHUT-OFF VALVE
REQUIRED - ICE MAKING
WATER INLET TUBING 3/8"
MIN. I.D. (.95 CM)
MODULAR UNITS
UNDERCOUNTER UNITS
WATER SUPPLY AND DRAIN LINE SIZING/CONNECTIONS
Location
Potable
Water Inlet
Potable
Water Drain
Condenser
Water Inlet
Condenser
Water Drain
Water Temp
Min/Max
40°/90°F
(4°/32°C)
--- --- 1/2" MPT
40°/90°F
(4°/32°C)
--- --- 1/2" MPT
Water Pressure
Min/Max
14/80 psi
(100/552 kPA)
20/150 psi
(138/1034 kPA)
Fitting/Min Tubing Size
3/8" FPT
3/8” FPT
RF2300 only = 1/2" FPT
Bin Drain --- --- 3/4" FPT
Large Capacity Bin Drain --- --- 1" FPT
Typical Water Supply Drain Installation
Part Number 000007644 8/14 9
Installation Instructions Section 2
!
Warning
!
Warning
Important
Electrical Service
GROUND FAULT CIRCUIT INTERRUPTER
All wiring must conform to local, state and national
codes.
VOLTAGE
The maximum allowable voltage variation is ±1 0% of the
rated voltage at ice machine star t-up (when the electrical
load is highest).
The ice machine must be grounded in accordance
with national and local electrical codes.
All electrical work, including wire routing and grounding,
must conform to local, state and national electrical
codes. The following precautions must be observed:
• The ice machine must be grounded.
• A separate fuse/circuit breaker must be provide d fo r
each ice machine.
• A qualified electrician must determine proper wire
size dependent upon location, materials used and
length of run (minimum circuit ampacity can be used
to help select the wire size).
• The maximum allowable voltage variation is +/-10 of
the rated voltage at ice machine start-up (when the
electrical load is highest).
• Check all ground screws in the control box and verify
they are tight before starting the ice machine.
We do not recommend the use of a GFCI/GFI circuit
protection with our equipment. If a GFCI/GFI is required
by code, use a GFCI/GFI breaker rather than outlet
which is more prone to intermittent nuisance trips than
panel circuit breakers.
MINIMUM POWER CORD SPECIFICATIONS
The wire size to the receptacle is dependent upon
location, materials used, length of run, etc., so it must be
determined by a qualified electrician. Local, state or
national requirements will supersede our minimum
requirements.
FOR UNITED KINGDOM ONLY
As the colors of the wires in the mains lead of the appliance may not
correspond with the colored markings identifying the terminals in your plug,
proceed as follows:
• The wire which is colored green and yellow must be connected to the
terminal in the plug which is marked with the letter E or by the earth
ground symbol or colored green or green and yellow.
• The wire colored blue
with the letter N or colored black.
• The wire colored brown
marked with the letter L or colored red.
must be connected to the terminal which is marked
must be connected to the terminal which is
Observe correct polarity of incoming line voltage.
Incorrect polarity can lead to erratic ice machine
operation.
FUSE/CIRCUIT BREAKER
A dedicated circuit and a separate fuse/circuit breaker
are required for each ice machine.
10
Part Number 000007644 8/14
Section 2 Installation Instructions
Important
Maximum Breaker Size & Minimum Circuit Amperage Chart
Due to continuous improvements, this information is
for reference only. Please refer to the ice machine
serial number tag to verify electrical data. Serial tag
information overrides information listed on this page.
Air-Cooled Water-Cooled QuietQube
Series Ice
Machine
RF0244
RNS0244
RF0266
RF0385
RNS0385
RF0388
RF0399
RF0644 115/1/60 25 Amp N/A 13.5 N/A N/A — —
RFS0300 115/1/60 20 Amp 12.8 — N/A N/A — —
RNS0300 115/1/60 20 Amp 12.8 — N/A N/A — —
RNS0600
RFS0650
RNS1000
RFS1200
RF2300
RFS2300
RFS1200R 208-230/1/60 15 Amp 1.4 — — — — —
RFS2300R 208-230/3/60 15 Amp 3.2 — — — — —
Maximum allowable voltage variation at compressor start-up is ±10% of voltage listed above and on the model/serial plate.
Voltage
Phase
Cycle
115/1/60 15 Amp N/A 7.5 N/A N/A — —
230/1/50 10 Amp N/A 2.7 N/A N/A — —
115/1/60 15 Amp N/A 7.5 N/A N/A — —
230/1/50 10 Amp N/A 2.7 N/A N/A — —
115/1/60 15 Amp N/A 7.5 N/A N/A — —
230/1/50 10 Amp N/A 2.7 N/A N/A — —
115/1/60 15 Amp N/A 10.0 N/A N/A — —
230/1/50 10 Amp N/A 3.3 N/A N/A — —
115/1/60 15 Amp N/A 10.0 N/A N/A — —
230/1/50 10 Amp N/A 3.3 N/A N/A — —
115/1/60 15 Amp N/A 10.0 N/A N/A — —
230/1/50 10 Amp N/A 3.3 N/A N/A — —
115/1/60 15 Amp N/A 10.0 N/A N/A — —
230/1/50 10 Amp N/A 3.3 N/A N/A — —
115/1/60 15 Amp 8.2 — 25 Amp 15.4 — —
208-230/1/60 15 Amp 8.7 — 25 Amp 16.3 — —
115/1/60 25 Amp 16.3 — 25 Amp 15.4 — —
208-230/1/60 15 Amp 8.7 — 15 Amp 8.2 — —
115/1/60 — — — — — 15 Amp 2.9
208-230/1/60 20 Amp 14.2 — 20 Amp 13.7 15 Amp 1.4
208-230/1/60 20 Amp 12.5 — 20 Amp 12.5 15 Amp 1.4
230/1/50 — — — — — 10 Amp 1.4
208-230/3/60 20 Amp 15.0 — 20 Amp 15.0 — —
400-415/3/50 16 Amp 13.9 — 16 Amp 13.9 — —
208-230/3/60 — — — — — 15 Amp 3.2
230/1/50 — — — — — 15 Amp 3.2
Max
Fuse/
Circuit
Breaker
Min
Circuit
Amps
Total
Circuit
Amps
Max
Fuse/
Circuit
Breaker
Min
Circuit
Amps
Max
Fuse/
Circuit
Breaker
Total
Circuit
Amps
Part Number 000007644 8/14 11
Installation Instructions Section 2
QUIETQUBE REMOTE CONDENSING UNIT
Condensing Unit Voltage Phase Cycle Maximum Fuse/Circuit Breaker Minimum Circuit Amps
208-230/60/1 15 15
RCU1075
RCU1098
RCU2375
208-230/60/3
208-230/50/1
208-230/60/1 15 15
208-230/60/3
208-230/60/1 15 15
208-230/60/3
208-230/50/1
15 15
15 15
15 15
15 15
15 15
12
Part Number 000007644 8/14
Section 2 Installation Instructions
Important
!
Caution
!
Warning
!
Caution
!
Warning
Refrigeration System Installation
Remote Condensing Unit Only
QuietQube®
Ice Machine
RNS1000C
RFS1200C
RFS2300C
*Line Set Suction Line Liquid Line
RC 21/31/51
Manitowoc remote systems are only approved and
warranted as a complete new package. Warranty on
the refrigeration system will be void if a new ice
machine head section is connected to pre-existing
(used) tubing or condensing units or vice versa.
USAGE WITH NON-MANITOWOC
CONDENSING UNITS
Manitowoc Remote Condensing Units are specifically
designed for usage with a QuietQube® Ice Machine
Head Section. Standard condensing units and NonManitowoc condensing units are not approved for use
with a QuietQube® Ice Machine Head Section.
Remote
Condensing Unit
RCU1098
RCU1075
RCU2375
5/8 inch
(15.9 mm)
Line Set*
RC-21
RC-31
RC-51
3/8 inch
(9.5 mm)
Factory Equipment Refrigeration Amounts
ICE MACHINE HEAD SECTION
Each ice machine condensing unit ships from the factory
with a R-404A refrigerant charge appropriate for the
entire system operation. The serial tag on the ice
machine indicates the refrigerant charge. The re frigerant
charge is sufficient to operate the ice machine in
ambient temperatures between -20°F (-28.9°C) and
120°F (48.9°C). With line set lengths of up to 100 feet
(30.5 m).
Potential Personal Injury Situation
The QuietQube Condensing Unit 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 dealing with refrigerant charged
equipment.
Never add more than nameplate charge to the
refrigeration system for any application.
REFRIGERATION LINE SETS/TRAP KIT
Refrigeration Rated Tubing and Trap Kits are shipped
capped with atmospheric pressure.
The 60-month compressor warranty (including the 24month labor replacement warranty) will not apply if the
Manitowoc Ice Machine and Manitowoc Remote
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.
Installation of a QuietQube® Condensing Unit may
require the use of special equipment for placement.
Trained and qualified personnel are required for
proper rigging and lifting.
Part Number 000007644 8/14 13
Installation Instructions Section 2
!
Warning
!
Warning
Important
35 ft. (10.7 m)
MAX.
DISTANCE
SV1751
15 ft. (4.5 m)
MAX.
DISTANCE
SV1750
Refrigeration Line Set Installation
Remote Condensing Unit Only
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 remote condensing unit/ice
machine operation.
The refrigeration line set installer must be USA
Government-Environmental Protection Agency (EPA)
certified in proper refrigerant handling and servicing
procedures.
The QuietQube Condensing unit contains refrigerant
charge. The two refrigeration valves must remain
closed until proper installation of the line sets is
completed.
Disconnect electrical power to the ice machine head
section and remote condensing unit before
proceeding.
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 (48.9°C), with line
set lengths of up to 100 feet (30.5 m).The maximum
amount of line set which can be exposed on the rooftop
is 25% of the total length of the line set.
QuietQube® 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 refrige rant ch ar ge to
compensate!
B. LINE SET RISE OR DROP
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 them 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 penetra tio ns .
Step 2 Route Refrigeration Tubing
Properly route refrigeration tubing between the ice
machine head section and the remote condensing unit.
35 feet (10.7 m) Rise: The maximum distance the
remote condensing unit can be above the ice machine.
15 feet (4.5 m) Drop: The maximum distance the
remote condensing unit can be below the ice machine .
14
Part Number 000007644 8/14
Section 2 Installation Instructions
!
Caution
21 ft. (6.4 m)
OR MORE RISE
ADDITIONAL
TRAP KIT
REQUIRED
!
Caution
!
Caution
C. SUCTION LINE OIL TRAPS
Do not form unwanted traps in refrigeration lines.
Never coil excess refrigeration tubing.
0 to 20 feet (0 to 6.1 m) Rise: No oil trap is required
when the condensing unit is located 20 feet (6.1 m) or
less above the ice machine head section.
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 cond en sin g
unit. S-Trap Kits are available from Manitowoc.
Service Loop
A service loop in the line set permits easy access to the
ice machine for cleaning and service.
• 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.
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
Do not form unwanted traps in refrigeration lines.
Never coil excess refrigeration tubing.
When the line set requires shortening or lengthenin g, do
so before connecting the line set to the ice machine
head section or the remote condensing unit.
Part Number 000007644 8/14 15
Installation Instructions Section 2
!
Warning
!
Warning
MINIMIZE THE TIME THE
REFRIGERATION SYSTEM IS
EXPOSED TO THE A TMOSPHERE
(15 MINUTES MAXIMUM)
SUCTION LINE
LIQUID LINE
Suction and liquid line shut-off valves
must remain closed until evacuation and
pressure testing are complete.
Step 4 Connecting the line set
To prevent oxidation of the copper, purge line set and
condensing unit with dry nitrogen while brazing.
A. Connect the Line Set to the Remote Condensing
Unit
The QuietQube Condensing unit contains refrigerant
charge. The two refrigeration valves must remain
closed until proper installation of the line sets is
completed.
The line set shut-off valves must remain closed and be
protected from heat during the braz ing pro ce ss. 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.
Step 5 Pressure Test and Evacuate Line Set and
Ice Machine Head Section
• Suction and liquid line set shutoff valves must remain
closed until pressure testing and evacuation are
complete.
• Pressure testing and evacuation can be performed
from the ice machine head section or CVD
condensing unit shut-off valves.
• 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.
• Pressure test @ 150 psi (1000 kPa) for a minimum of
15 minutes.
• Minimum evacuation level is 500 microns.
B. Connect the Line Set to the Ice Machine Head
Section
The ice machine head section ships from the factory
pressurized with R404A refrigerant. Recover the
refrigerant from both suction and liquid line access
ports prior to cutting into refrigeration lines.
• Cut the suction and liquid tubing with a tubing cutter,
leaving enough tubing to easily braze.
• Connect the line set.
• Cool braze joint with water immediately after brazing
to prevent heat migration.
16
Part Number 000007644 8/14
Section 2 Installation Instructions
Open suction and liquid line
shut-off valves
Important
Important
Step 6 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 rocker switch into the ON position. This allows the
low side and high side pressures to equalize for leak
checking. Place the rocker switch in the OFF position.
Connect power to the remote condensing unit and allow
system to pump down after leak checking is complete.
Step 7 Open The Valves Prior To Starting The Ice
Machine
A. Slowly backseat (open-turn counterclockwise)
the suction line shutoff valve.
B. Slowly backseat (open-turn counterclockwise)
the liquid line shutoff valve.
All refrigeration valve caps must be reinstalled to
prevent future refrigeration leaks.
Verify O-ring in schrader valve caps are intact and
reinstall on shutoff valves to prevent re frigerant leakage .
Replace shutoff valve access caps and torque to the
following specifications.
Torque Values
Stem 18-20 ft. lbs. (24.4-27.1 Nm)
Caps 12-15 ft. lbs. (16.3-20.3 Nm)
Schrader Core 1.5-3 in. lbs. (0.17-0.34 Nm)
Step 8 Insulation Requirements
To prevent condensation the entire suction line 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 90% Relative
Humidity. If higher humidity is expected, increase
insulation thickness.
The entire suction line set requires:
Open Valves
Suction Line Liquid Line
5/8 in. (16 mm) 3/8 in. (10 mm)
Min. Insulation
Thickness
1/2 in. (13 mm)
Suction Line
1/4 in. (7 mm)
Liquid Line
To prevent condensation the entire suction line must
be insulated. All insulation must be airtight and
sealed at both ends.
The minimum requirements are for conditions at or
below 90% humidity and 90°F (32°C) ambient. When
higher humidity will be experienced, or local code
requires, insulation wall thickness will need to be
increased.
Part Number 000007644 8/14 17
Installation Instructions Section 2
Installation Check List
All Manitowoc ice machines are factory-operated and adjusted before shipment. Adjustments and maintenance
procedures outlined in this manual are the responsibility of the owner/operator and are not covered by the warranty.
Is the Ice Machine level?
Is the ice machine and adapter (when used)
secured to the dispenser?
Have all of the electrical and water
connections been made?
Has the supply voltage been tested and
checked against the rating on the nameplate?
Is there proper clearance around the ice
machine for air circulation?
Is the ice machine grounded and polarity
correct?
Has the ice machine been installed where
ambient temperatures will remain in the range
of 50° - 100°F (14.4° - 37.8°C)?
Is there a separate drain for the water-cooled
condenser?
‘
Is there a separate drain for the dispenser?
Is the ice making water turned on?
Are all electrical leads free from contact with
refrigeration lines and moving equipment?
Has the owner/operator been instructed
regarding maintenance and the use of
Manitowoc Cleaner and Sanitizer?
Has the owner/operator comp leted the
warranty registration card?
Has the ice machine and bin been sanitized?
Is the rocker switch set to ON?
Has the ice machine been installed where the
incoming water temperature will remain in the
range of 50° - 90°F (14.4° - 32.2°C)?
18
Part Number 000007644 8/14
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