Hoshizaki Serenity KMS-2000MLJ User manual

Models
KMS-2000MLJ
Including
Condensing Unit Models
SRK-20J/3
Modular Crescent Cuber
Serenity Series
Instruction Manual
Issued: 1-23-2018
hoshizakiamerica.com

2
WARNING
Only qualied service technicians should install and service the icemaker. To
obtain the name and phone number of your local Hoshizaki Certied Service
Representative, visit www.hoshizaki.com. No installation or service should be
undertaken until the technician has thoroughly read this Instruction Manual.
Likewise, the owner/manager should not proceed to operate the icemaker until the
installer has instructed them on its proper operation. Failure to install, operate, and
maintain the equipment in accordance with this manual will adversely affect safety,
performance, component life, and warranty coverage and may result in costly water
damage. Proper installation is the responsibility of the installer. Product failure or
property damage due to improper installation is not covered under warranty.
Hoshizaki provides this manual primarily to assist qualied service technicians in the
installation, maintenance, and service of the icemaker.
Should the reader have any questions or concerns which have not been satisfactorily
addressed, please call, send an e-mail message, or write to the Hoshizaki Technical
Support Department for assistance.
Phone: [phone]
Fax: [phone]
E-mail: [email protected]
618 Highway 74 South
Peachtree City, GA 30269
Attn: Hoshizaki Technical Support Department
NOTE: To expedite assistance, all correspondence/communication MUST include the
following information:
• Model Number
• Serial Number
• Complete and detailed explanation of the problem.

3
CONTENTS
Important Safety Information ................................................................................................. 4
I. Specications...................................................................................................................... 6
A. Electrical and Refrigerant Data ..................................................................................... 6
1. KMS-2000MLJ ......................................................................................................... 6
2. SRK-20J/3 ............................................................................................................... 6
B. Dimensions/Connections .............................................................................................. 7
1. KMS-2000MLJ ......................................................................................................... 7
2. SRK-20J/3 ............................................................................................................... 8
II. Installation and Operating Instructions .............................................................................. 9
A. Location ........................................................................................................................ 9
1. Icemaker .................................................................................................................. 9
2. Remote Condensing Unit....................................................................................... 10
B. Checks Before Installation............................................................................................11
1. Icemaker .................................................................................................................11
2. Remote Condensing Unit........................................................................................11
C. How to Remove Panels............................................................................................... 12
1. Icemaker ................................................................................................................ 12
2. Remote Condensing Unit....................................................................................... 12
D. Installation of the Icemaker ......................................................................................... 13
1. Setup...................................................................................................................... 13
2. Water Tank Removal .............................................................................................. 15
E. Installation of the Remote Condensing Unit................................................................ 19
1. Setup...................................................................................................................... 19
2. Line Set ................................................................................................................. 19
3. Line Set Installation ............................................................................................... 20
F. Electrical Connection ................................................................................................... 22
G. Water Supply and Drain Connections ......................................................................... 25
H. Final Checklist............................................................................................................. 27
I. Startup.......................................................................................................................... 28
III. Cleaning and Maintenance ............................................................................................ 30
A. Cleaning and Sanitizing Instructions ........................................................................... 30
1. Cleaning Procedure................................................................................................ 31
2. Sanitizing Procedure - Following Cleaning Procedure ........................................... 32
B. Maintenance................................................................................................................ 33
C. Preparing the Icemaker for Periods of Non-Use.......................................................... 34
IMPORTANT
This manual should be read carefully before the icemaker is installed and operated.
Read the warnings and guidelines contained in this booklet carefully as they
provide essential information for the continued safe use and maintenance of the
icemaker. Retain this booklet for any further reference that may be necessary.

4
Important Safety Information
Throughout this manual, notices appear to bring your attention to situations which could
result in death, serious injury, damage to the unit, or damage to property.
WARNING Indicates a hazardous situation which could result in death or
serious injury.
NOTICE Indicates a situation which could result in damage to the unit or
property.
IMPORTANT Indicates important information about the installation, use, and
care of the unit.
WARNING
This icemaker should be destined only to the use for which it has been expressly
conceived. Any other use should be considered improper and therefore dangerous.
The manufacturer cannot be held responsible for injury or damage resulting
from improper, incorrect, and unreasonable use. Failure to install, operate, and
maintain the equipment in accordance with this manual will adversely affect safety,
performance, component life, and warranty coverage and may result in costly water
damage.
To reduce the risk of death, electric shock, serious injury, or re, follow basic
precautions including the following:
• Only qualied service technicians should install and service the icemaker.
• Move the control switch to the "OFF" position and turn off the power supply to
the remote condensing unit before servicing. Place the icemaker disconnect
(ifapplicable) in the "OFF" position. Lockout/Tagout to prevent the power supply
from being turned back on inadvertently.
• This icemaker must be installed in accordance with applicable national, state, and
local codes and regulations.
• To reduce the risk of electric shock, do not touch the control switch or service switch
with damp hands.
• Do not make any alterations to the unit. Alterations could result in electric shock,
injury, re, or damage to the unit.
• 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 or instruction concerning use of the
appliance by a person responsible for their safety.
• Young children should be properly supervised around this appliance.
• Do not climb, stand, or hang on the icemaker or allow children or animals to do so.
Serious injury could occur or the icemaker could be damaged.
• Do not use combustible spray or place volatile or ammable substances near the
unit. They might catch re.
• Keep the area around the unit clean. Dirt, dust, or insects in the unit could cause
harm to individuals or damage to the equipment.

5
WARNING, continued
Icemaker
• Do not connect the icemaker to an external power source. Icemaker power supply
and ground connection are supplied from the remote condensing unit via the wire
bundle provided with the remote condensing unit.
• Wire bundle routing (conduit) and disconnect (if required) must meet national, state,
and local electrical code requirements. Failure to meet these code requirements
could result in death, electric shock, serious injury, re, or damage.
• THE ICEMAKER MUST BE GROUNDED. Failure to properly ground the icemaker
could result in death or serious injury.
Remote Condensing Unit
• Remote condensing unit electrical connection must be hard-wired and must meet
national, state, and local electrical code requirements. Failure to meet these code
requirements could result in death, electric shock, serious injury, re, or damage.
• The remote condensing unit requires an independent power supply of proper
capacity. See the nameplate for electrical specications. Failure to use an
independent power supply of proper capacity can result in a tripped breaker, blown
fuse, damage to existing wiring, or component failure. This could lead to heat
generation or re.
• THE REMOTE CONDENSING UNIT MUST BE GROUNDED. Failure to properly
ground the remote condensing unit could result in death or serious injury.
NOTICE
• Follow the water supply, drain connection, and maintenance instructions carefully to
reduce the risk of costly water damage.
• In areas where water damage is a concern, install in a contained area with a oor
drain.
• Install the icemaker in a location that stays above freezing. Normal operating
ambient temperature must be within 45°F to 100°F (7°C to 38°C).
• Do not leave the icemaker on during extended periods of non-use, extended
absences, or in sub-freezing temperatures. To properly prepare the icemaker for
these occasions, follow the instructions in "III.C. Preparing the Icemaker for Periods
of Non-Use."
• Do not place objects on top of the appliance.
• The dispenser unit/ice storage bin is for ice use only. Do not store anything else in
the dispenser unit/ice storage bin.

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I. Specications
A. Electrical and Refrigerant Data
The rating label (KMS) and nameplate (KMS and SRK) provide electrical and refrigerant
data. The rating label can be seen by removing the front panel. The nameplate is located
on the rear panel of the icemaker and on the side panel of the remote condensing unit.
Forcertication marks, see the nameplate.
We reserve the right to make changes in specications and design without prior notice.
1. KMS-2000MLJ
Model Number KMS-2000MLJ
AC Supply Voltage 115-120/60/1
Pump 120V 1.2FLA 60W
Other 115V 0.8A
Design Pressure HI-467PSI LO-230PSI
Total Refrigerant
Charge
404A
Total Refrigerant Charge
with Hoshizaki Remote
Condensing Unit
SRK-20J/3: 27 LB. 5 OZ.
2. SRK-20J/3
Model Number SRK-20J SRK-20J3
AC Supply Voltage 208-230/60/1 (3 wire with
neutral)
208-230/60/3
Compressor 230V 17.5RLA 121LRA 230V 11.0RLA 105LRA
Fan 115V 2.6FLA (total) 126W 115V 2.6FLA (total) 126W
Other 115V 1.2A 115V 1.2A
Maximum Fuse Size 30 AMPS 20 AMPS
Max. HACR Breaker
(USA Only)
30 AMPS 20 AMPS
Max. Circ. Breaker
(Canada Only)
30 AMPS 20 AMPS
Minimum Circuit
Ampacity
30 AMPS 20 AMPS
Design Pressure HI-467PSI LO-230PSI HI-467PSI LO-230PSI
Refrigerant 404A
Total Refrigerant Charge
with Hoshizaki Icemaker
KMS-2000MLJ:
27 LB. 5 OZ.
404A
Total Refrigerant Charge
with Hoshizaki Icemaker
KMS-2000MLJ:
27 LB. 5 OZ.

7
B. Dimensions/Connections
1. KMS-2000MLJ
Unit: mm [in.]

8
2. SRK-20J/3
Unit: mm [in.]
Note: Legs are included with remote condensing unit.
Leg height is 380 mm (14.96 in.).

9
II. Installation and Operating Instructions
WARNING
• The icemaker and remote condensing unit must be installed in accordance with
applicable national, state, and local codes and regulations.
• Failure to install, operate, and maintain the equipment in accordance with this
manual will adversely affect safety, performance, component life, and warranty
coverage and may result in costly water damage.
• CHOKING HAZARD: Ensure all components, fasteners, and thumbscrews
are securely in place after installation. Make sure that none have fallen into the
dispenser unit/storage bin.
A. Location
1. Icemaker
NOTICE
• This icemaker is not intended for outdoor use. Normal operating ambient
temperature must be within 45°F to 100°F (7°C to 38°C); Normal operating
water temperature must be within 45°F to 90°F (7°C to 32°C). Operation of the
icemaker, for extended periods, outside of these normal temperature ranges may
affect icemaker performance.
• This icemaker will not work at sub-freezing temperatures. To prevent damage
to the water supply line, drain the icemaker if the air temperature is going to go
below 32°F (0°C). See "III.C. Preparing the Icemaker for Periods of Non-Use."
• The icemaker should not be located next to ovens, grills, or other high heat producing
equipment.
• Allow 6" (15 cm) clearance at rear and sides for proper air circulation and ease of
maintenance and/or service should they be required.
• The location must provide a rm and level foundation for the equipment.

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2. Remote Condensing Unit
NOTICE
• The remote condensing unit is intended for outdoor use. Normal operating ambient
temperature must be within -20°F to 122°F (-29°C to 50°C). Operation of the
remote condensing unit, for extended periods, outside of this normal temperature
range may affect icemaker performance.
• Maximum line set length is 66 feet. No refrigerant charge adjustment is necessary.
• The maximum vertical distance between the remote condensing unit and icemaker
is 33feet above or 10 feet below the icemaker. These distances are measured
tting to tting. See Fig. 1.
• If the vertical distance between the remote condensing unit and the icemaker is
greater than 20 feet (not to exceed 33 feet), an "S" oil-trap (5/8" OD copper tubing)
must be installed in the suction line. The "S" oil-trap must be located halfway
between the icemaker and remote condensing unit. This ensures sufficient oil
return to the compressor.
The remote condensing unit must be positioned in a permanent site under the following
guidelines:
• A rm and at site.
• A dry and well ventilated area with 24" (61 cm) clearance in both front and rear for proper
air circulation and ease of maintenance and/or service should they be required. See Fig. 2.
Fig. 1
Fig. 2
Min. 24" (61 cm) Clearance
Air
Air
24"
(61 cm)
24"
(61 cm)
Icemaker
Remote Condensing
Unit
Suction Line
"S" Oil-Trap
Service Loop
Max. 33 Feet
Max.
16.5
Feet
Max.
16.5
Feet
Bin
Icemaker
Service
Loop
Max. 10 Feet
Remote Condensing
Unit
Bin

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B. Checks Before Installation
• Visually inspect the exterior of the shipping containers and immediately report any
damage to the carrier. Upon opening the containers, any concealed damage should
also be immediately reported to the carrier.
• Remove the shipping carton, tape, and packing material. If any are left in the icemaker
or remote condensing unit, they will not work properly.
1. Icemaker
• Remove the panels to prevent damage when installing the icemaker. See "II.C. How to
Remove Panels." NOTICE! Leave the front frame in place until "II.D.2 Water Tank
Removal."
• Remove the package containing the accessories.
• Remove the protective plastic lm from the panels. If the icemaker is exposed to the sun
or to heat, remove the lm after the icemaker cools.
• Check that the refrigerant lines do not rub or touch lines or other surfaces.
• This icemaker can be installed on a dispenser unit or storage bin 30" wide or wider.
Foroptions, contact your local Hoshizaki distributor.
• NOTICE! This icemaker is designed for connection to Hoshizaki Remote
Condensing Unit Model SRK-20J or SRK-20J3 only! CONNECTION TO ANOTHER
REMOTE CONDENSING UNIT WILL VOID WARRANTY.
2. Remote Condensing Unit
• See the nameplate on the remote condensing unit. Check that your voltage supplied
corresponds with the voltage specied on the nameplate.
• Remove the panels to prevent damage when installing the remote condensing unit.
See"II.C. How to Remove Panels."
• Remove the package containing the accessories.
• Check that the refrigerant lines do not rub or touch lines or other surfaces, and that the
fan blades turn freely.
• Check that the compressor is snug on all mounting pads.

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C. How to Remove Panels
1. Icemaker
• Front Panel: Remove the screw. Lift up and towards you.
• Top Panel: Lift off.
• Right Side Panel: Remove the screw.
Slide forward slightly and lift off.
• Insulation Panel: Remove the
thumbscrews. Lift up slightly and pull
towards you.
• Top Insulation: Lift off.
• Front Frame: NOTICE! Leave the
front frame in place until "II.D.2
Water Tank Removal."
Fig. 4
Top Panel Right Side Panel
Louver Panel
Left Side/Lower Panel (L1)
Front Panel
Remote Condensing Unit
Right Side Panel
Fig. 3
Top Panel
Front Panel
Insulation
Panel
Icemaker
2. Remote Condensing Unit
• Top Panel: Remove the screws and lift off.
• Front Panel: Remove the screws and lift off.
• Left Side/Lower Panel (L1): Remove the screws and lift off.
• Left Side/Upper Panel Left (L2): Remove the screws and lift off.
• Left Side/Upper Panel Right (L3): Remove the screws and lift off.
• Louver Panel: Remove the screws and lift off.
• Right Side Panel: Remove the screws and lift off.
Legs
Left Side/Upper Panel Left (L2)
Front Frame
Top Insulation
Left Side/Upper Panel Right (L3)

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D. Installation of the Icemaker
NOTICE
• Donot connect the icemaker to an external power source. Icemaker power supply
and ground connection are supplied from the remote condensing unit via the wire
bundle provided with the remote condensing unit. For details, see "II.F. Electrical
Connection."
• Before operating the icemaker, the bin control must be installed correctly. Failure
to properly install the bin control could result in ice backup and unit damage.
• Failure to properly seal the icemaker to the dispenser unit/storage bin could result
in water leakage and costly water damage.
1. Setup
1) If mounting the icemaker on top of a dispenser unit, follow the dispenser unit's setup
procedure. If mounting the icemaker on top of a storage bin, unpack the storage bin and
attach the 4 adjustable legs provided (bin accessory) to the bottom of the storage bin.
2) Position the dispenser unit/storage bin in its permanent location.
3a) Dispenser Unit: Install the dispenser unit adapter kit. Make sure the dispenser
unit adapter kit opening and the icemaker water tank opening match. If not, cut the
dispenser unit adapter kit to the dimensions needed to match the icemaker water
tank opening. NOTICE! The dispenser unit adapter kit opening MUST match the
icemaker water tank opening. A smaller opening may result in water leaking.
Seal the adapter kit to the dispenser unit with RTV-748 sealant (provided) or
equivalent. See Fig. 5.
3b) Storage Bin: If required, install a top kit, a storage bin extension bracket HS kit, or
abrace HSkit. Contact your local Hoshizaki distributor for recommendations.
4) Place the icemaker on top of the dispenser unit/storage bin.
Fig. 5
Icemaker Water Tank Opening
Dispenser Unit Application
543 mm
[21.4 in.]
550 mm [21.7 in.]
25 mm [1 in.]
25 mm
[1 in.]

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5a) Dispenser Unit: Follow the dispenser unit's instructions for securing the icemaker to
the dispenser unit. If no instructions are available, secure the icemaker to the dispenser
unit using the mounting brackets provided. Rotate the mounting brackets so that
they t ush to the dispensing unit. SeeFig.6a. Secure the mounting brackets to the
icemaker with the bolts provided. Secure the mounting brackets to the dispensing unit
with self-tapping screws (not provided). NOTICE! Use care to avoid damage to the
dispenser unit components when attaching the mounting brackets. Seal the outer
perimeter of the icemaker to the dispenser unit with RTV-748 sealant (provided) or
equivalent.
5b) Storage Bin: Secure the icemaker to the storage bin using the 2mounting brackets and
the bolts provided. See Fig.6b. Seal the outer perimeter of the icemaker to the storage
bin with RTV-748 sealant (provided) or equivalent.
6) Level the icemaker and dispensing unit/storage bin in both the left-to-right and
front-to-rear directions. Ifusing a storage bin, adjust the storage bin legs to make the
icemaker level.
Dispenser Unit Application Storage Bin Application
Mounting
Brackets
Bolts
Dispenser
Unit
Storage Bin
Fig. 6a Fig. 6b
Icemaker
Icemaker
Mounting
Brackets
Bolts
Self-Tapping
Screws
(Not Provided)
Seal the Outer Perimeter with
RTV-748 Sealant or Equivalent

15
2. Water Tank Removal
1) Remove the front frame and splash curtain. See Fig. 7.
2) Disconnect the pump suction hose, drain pipe, and oat connection hose at the
evaporator case wall. Disconnect the water tank drain hose from the bottom of the
water tank. Although the water tank can be removed at this point, do not remove it yet
because the bin control is taped inside the water tank.
NOTICE
The bin control cable is routed through the back of the icemaker. If care is not taken
when removing the water tank, the bin control cable could be severed.
Pump Suction Hose
Drain Pipe
Water Tank Drain Hose
Float Connection Hose
Splash Curtain
Fig. 7
Evaporator Case Wall
Water Tank
Front Frame
3) Pull out the water tank only as far as shown in Fig. 8.
4) Remove the cube guide, then remove the bin control assembly.
5) Being careful not to pull the bin control cable, remove the water tank completely
from the icemaker.
6) Remove the remaining pieces of tape from the water tank and leave the water tank out
of the icemaker for now.
Fig. 8
Bin Control Cable
Cube Guide

16
7) Dispenser Unit: Seal the inner perimeter of the icemaker evaporator section to the
dispenser unit adapter kit with RTV-748 sealant (provided) or equivalent. See Fig. 9.
Make sure the inner perimeter sealant meets the outer perimeter sealant and that there
are no gaps.
WARNING
The following locations must be properly sealed with RTV-748 sealant or
equivalent. Otherwise, water leakage may occur which could result in a slip hazard
and costly water damage.
• Contact points between the dispenser unit and the dispenser unit adapter kit.
• Contact points between the icemaker evaporator section and the dispenser unit
adapter kit.
• Outer perimeter contact points between the dispenser unit and icemaker.
Fig. 9
Icemaker
Evaporator
Section
Dispenser
Unit
Seal the Inner Perimeter with RTV-748 Sealant or Equivalent.
Make sure the inner perimeter sealant meets the outer
perimeter sealant and that there are no gaps.

17
3. Bin Control
NOTICE
Before operating the icemaker, the bin control assembly must be installed correctly.
Failure to properly install the bin control assembly could result in ice backup and
unit damage.
1) Remove the 2 outer switch cover thumbscrews from the switch cover. See Fig. 10.
2) Remove the 2 inner switch cover thumbscrews. Slide the bin control out of the switch
mount.
3) Mount the bin control to the extension bracket (accessory bag) using the 2 thumbscrews
from the accessory bag. Route the bin control cable from the outer corner of the bin
control up through the gap in the extension bracket.
4) Using the 2 thumbscrews removed in step 2, mount the extension bracket to the switch
cover.
5) Replace the outer switch cover thumbscrews into the slots on the switch bracket. Do not
tighten.
Fig. 10
Outer Switch Cover
Thumbscrews
Switch Cover
Switch Bracket
Inner Switch Cover
Thumbscrews
Switch Bracket
Thumbscrews
Extension Bracket
(Accessory Bag)
Bin Control
Extension Bracket
Thumbscrews
(Accessory Bag)
Switch Mount Bin Control Cable
Extension Bracket
Gap
Extension Bracket
Gap

18
6) Slide the bin control assembly all the way back until the switch mount is ush with the
dispenser unit bin wall or the storage bin wall, top kit extension bracket, or brace. See
Fig. 11. Tighten the outer switch cover thumbscrews.
NOTICE
On dispenser unit applications, do not leave a gap between the bin control and the
wall of the dispenser unit bin wall. If a gap is left between the bin control and the
wall of the dispenser unit bin wall, ice may get between them and damage the bin
control.
Dispenser Unit: Slide the bin control
assembly all the way back until the switch
mount is ush with the dispenser unit bin
wall.
Storage Bin: Slide the bin control assembly
all the way back until the switch mount is
ush with the storage bin wall, extension
bracket, or brace.
Dispenser
Unit
Icemaker
Fig. 11
Switch Mount
Evaporator
Bin Control Cable
Cable Tie
To Control Box
Plastic Pipe
Hose Fig. 12
7) Pull the bin control cable so that there is no slack in the ice drop area, then secure the
hose that the lead runs through with a cable tie. See Fig. 12.
8) Replace the water tank in the icemaker and reconnect the 4 hoses.
Note: Panels replaced during "II.I. Startup."

19
E. Installation of the Remote Condensing Unit
WARNING
• Installation must be performed by properly trained and EPA-certied service
personnel.
• Power supply and ground wire to the icemaker are supplied from the remote
condensing unit. For details, see "II.F. Electrical Connection."
1. Setup
1) Secure the legs to the remote condensing
unit with the 16 bolts and nuts provided.
See Fig. 13.
2) The legs have 8 mounting holes. Secure
the legs with 8 bolts (not included).
Nut
Fig. 13
Bolt with
Split Lock
Washer and
Flat Washer
2. Line Set
NOTICE
The icemaker, remote condensing unit, and line set must contain the same type
of refrigerant. Mixing of refrigerants will result in improper operation and possible
damage to equipment.
• The maximum line set length is 66 feet and no refrigerant charge adjustment is necessary.
NOTICE! Do not exceed maximum line set length.
Line Set Size and Length for SRK-20J(3) Remote Condensing Units
Model
Liquid
Line
Suction
Line
Factory Line Set
Lengths (ft) Maximum Line Set Length (ft)
KMS-2000MLJ 1/2" OD 3/4" OD 25, 35, and 55 66
• The maximum vertical distance between the remote condensing unit and icemaker is
33feet above or 10 feet below the icemaker. These distances are measured tting to tting.
See Fig. 14. NOTICE! Do not exceed maximum vertical distance.
• If the vertical distance between the remote condensing unit and the icemaker is greater
than 20 feet (not to exceed 33 feet), an "S" oil-trap (3/4" OD tubing) must be installed
in the suction line. The "S" oil-trap must be located halfway between the icemaker and
remote condensing unit. This ensures sufficient oil return to the compressor.

20
3. Line Set Installation
WARNING
• R-404A itself is not ammable at atmospheric pressure and temperatures up to
176°F (80°C).
• R-404A itself is not explosive or poisonous. However, when exposed to high
temperatures (open ames), R-404A can be decomposed to form hydrouoric
acid and carbonyl uoride both of which are hazardous.
• Do not use silver alloy or copper alloy containing arsenic.
• Do not open any service valve until the line set installation is complete and leak
tested.
• Ensure that there are no unnecessary traps and no kinks in the line set.
• Do not coil extra line set.
• Use an electronic leak detector or soap bubbles to check for leaks. Add a trace of
refrigerant to the line set tubing through the service valve access ports (if using
an electronic leak detector), and then raise the pressure using nitrogen gas (140
PSIG). Do not use R-404A as a mixture with pressurized air for leak testing.
1) Route the appropriate size copper tubing. Insulate the copper tubes separately. Leave a
service loop behind the icemaker to allow the icemaker to be pulled out for service.
See Fig. 14. Note: The service loop is not considered an oil trap.
2) Remove any extra line set length.
3) Choose the icemaker/line set conguration (top access or rear access). Use elbows
as necessary. When using the top access holes, move the access covers to the rear
access holes. See Fig. 14.
4) NOTICE! Before brazing, remove the Schrader valve cores from the service valve
access ports. When brazing, protect the service valve by using a wet cloth to
prevent the service valve from overheating.
5) Braze the line set to the icemaker service valves rst, then to the remote condensing
unit service valves.
6) Allow the service valves to cool, then replace the Schrader valve cores.
7) Use an electronic leak detector or soap bubbles to check for leaks. Add a trace of
refrigerant to the line set tubing through the service valve access ports (if using an
electronic leak detector), and then raise the pressure using nitrogen gas (140 PSIG).
WARNING! Do not use R-404A as a mixture with pressurized air for leak testing.
8) Attach the gauge manifold hoses to the service valve access ports and evacuate the
line set tubing. Allow the vacuum pump to pull down to a 29.9" Hg vacuum. Evacuating
period depends on pump capacity. Next, charge each line set tube with R-404A vapor
to a pressure of 15 to 30 PSIG.
9) Close both gauge manifold valves.
10) Disconnect the gauge manifold hoses.
11) Replace the access port caps and tighten.