Trane Technologies CSHW047 User manual

CSHW Compressors
Installation and Service
Installation Instructions
June 2020 COM-SVN003B-EN
SAFETY WARNING
Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of
heating, ventilating, and air-conditioning equipment can be hazardous and requires specific knowledge and training.
Improperly installed, adjusted or altered equipment by an unqualified person could result in death or serious injury.
When working on the equipment, observe all precautions in the literature and on the tags, stickers, and labels that are
attached to the equipment.

© 2020 Trane COM-SVN003B-EN
Introduction
Read this manual thoroughly before operating or servicing
this unit.
Warnings, Cautions, and Notices
Safety advisories appear throughout this manual as
required. Your personal safety and the proper operation of
this machine depend upon the strict observance of these
precautions.
Important Environmental Concerns
Scientific research has shown that certain man-made
chemicals can affect the earth’s naturally occurring
stratospheric ozone layer when released to the
atmosphere. In particular, several of the identified
chemicals that may affect the ozone layer are refrigerants
that contain Chlorine, Fluorine and Carbon (CFCs) and
those containing Hydrogen, Chlorine, Fluorine and
Carbon (HCFCs). Not all refrigerants containing these
compounds have the same potential impact to the
environment. Trane advocates the responsible handling of
all refrigerants-including industry replacements for CFCs
and HCFCs such as saturated or unsaturated HFCs and
HCFCs.
Important Responsible Refrigerant
Practices
Trane believes that responsible refrigerant practices are
important to the environment, our customers, and the air
conditioning industry. All technicians who handle
refrigerants must be certified according to local rules. For
the USA, the Federal Clean Air Act (Section 608) sets forth
the requirements for handling, reclaiming, recovering and
recycling of certain refrigerants and the equipment that is
used in these service procedures. In addition, some states
or municipalities may have additional requirements that
must also be adhered to for responsible management of
refrigerants. Know the applicable laws and follow them.
The three types of advisories are defined as follows:
WARNING Indicates a potentially hazardous
situation which, if not avoided, could
result in death or serious injury.
CAUTIONsIndicates a potentially hazardous
situation which, if not avoided, could
result in minor or moderate injury. It
could also be used to alert against
unsafe practices.
NOTICE Indicates a situation that could result in
equipment or property-damage only
accidents.
WARNING
Proper Field Wiring and Grounding
Required!
Failure to follow code could result in death or serious
injury. All field wiring MUST be performed by qualified
personnel. Improperly installed and grounded field
wiring poses FIRE and ELECTROCUTION hazards. To
avoid these hazards, you MUST follow requirements for
field wiring installation and grounding as described in
NEC and your local/state electrical codes.
WARNING
Personal Protective Equipment (PPE)
Required!
Failure to wear proper PPE for the job being undertaken
could result in death or serious injury. Technicians, in
order to protect themselves from potential electrical,
mechanical, and chemical hazards, MUST follow
precautions in this manual and on the tags, stickers,
and labels, as well as the instructions below:
• Before installing/servicing this unit, technicians
MUST put on all PPE required for the work being
undertaken (Examples; cut resistant gloves/sleeves,
butyl gloves, safety glasses, hard hat/bump cap, fall
protection, electrical PPE and arc flash clothing).
ALWAYS refer to appropriate Safety Data Sheets
(SDS) and OSHA guidelines for proper PPE.
• When working with or around hazardous chemicals,
ALWAYSrefertotheappropriate SDS andOSHA/GHS
(Global Harmonized System of Classification and
Labeling of Chemicals) guidelines for information on
allowable personal exposure levels, proper
respiratory protection and handling instructions.
• If there is a risk of energized electrical contact, arc, or
flash, technicians MUST put on all PPE in accordance
with OSHA, NFPA 70E, or other country-specific
requirements for arc flash protection, PRIOR to
servicing the unit. NEVER PERFORM ANY
SWITCHING, DISCONNECTING, OR VOLTAGE
TESTING WITHOUT PROPER ELECTRICAL PPE AND
ARC FLASH CLOTHING. ENSURE ELECTRICAL
METERS AND EQUIPMENT ARE PROPERLY RATED
FOR INTENDED VOLTAGE.

Introduction
COM-SVN003B-EN 3
WARNING
R-410A Refrigerant under Higher Pressure
than R-22
Failure to use proper equipment or components as
described below, could result in equipment failing and
possibly exploding, which could result in death, serious
injury, or equipment damage. The units described in
this manual use R-410A refrigerant which operates at
higher pressures than R-22. Use ONLY R-410A rated
service equipment or components with these units. For
specific handling concerns with R-410A, please contact
your local Trane representative.
WARNING
Hazard of Explosion and Deadly Gases!
Never solder, braze or weld on refrigerant lines or any
unit components that are above atmospheric pressure
or where refrigerant may be present. Always remove
refrigerant by following the guidelines established by
the EPA Federal Clean Air Act or other state or local
codes as appropriate. After refrigerant removal, use dry
nitrogen to bring system back to atmospheric pressure
before opening system for repairs. mixtures of
refrigerants and air under pressure may become
combustible in the presence of an ignition source
leading to an explosion. Excessive heat from soldering,
brazing or welding with refrigerant vapors present can
form highly toxic gases and extremely corrosive acids.
Failure to follow all proper safe refrigerant handling
practices could result in death or serious injury.
WARNING
Hazard of Explosion!
Use only dry nitrogen with a pressure regulator for
pressurizing unit. Do not use acetylene, oxygen or
compressed air or mixtures containing them for
pressure testing. Do not use mixtures of a hydrogen
containing refrigerant and air above atmospheric
pressure for pressure testing as they may become
flammable and could result in an explosion. Refrigerant,
when used as a trace gas should only be mixed with dry
nitrogen for pressurizing units. Failure to follow these
instructions could result in death or serious injury or
equipment or property-only damage.
WARNING
Hazardous Service Procedures!
The maintenance and troubleshooting procedures
recommended in this section of the manual could result
in exposure to electrical, mechanical or other potential
safety hazards. Always refer to the safety warnings
provided throughout this manual concerning these
procedures. When possible, disconnect all electrical
power including remote disconnect and discharge all
energy storing devices such as capacitors before
servicing. Follow proper lockout/tag out procedures to
ensure the power can not be inadvertently energized.
When necessary to work with live electrical
components, have a qualified licensed electrician or
other individual who has been trained in handling live
electrical components perform these tasks. Failure to
follow all of the safety warnings provided could result in
death or serious injury.
WARNING
Hazardous Conditions!
Observe and follow the “Warning” and “Notices” labels
on the compressor. Failure to follow these instructions
could result in death or serious injury or damage to the
equipment.
NOTICE
Use Proper Charging and Crankcase
Heater Operation Procedures!
Failure to utilize proper charging and crankcase heater
procedure will result in compressor failure. Refer to unit
IOM or “Charging the System,” p. 16 and “Verification
Before Start-Up,” p. 16 in this manual for the proper
procedures.
WARNING
Follow EHS Policies!
Failure to follow instructions below could result in
death or serious injury.
• All Trane personnel must follow the company’s
Environmental, Health and Safety (EHS) policies
when performing work such as hot work, electrical,
fall protection, lockout/tagout, refrigerant handling,
etc. Where local regulations are more stringent than
these policies, those regulations supersede these
policies.
• Non-Trane personnel should always follow local
regulations.

Introduction
4COM-SVN003B-EN
Copyright
This document and the information in it are the property of
Trane, and may not be used or reproduced in whole or in
part without written permission. Trane reserves the right
to revise this publication at any time, and to make changes
to its content without obligation to notify any person of
such revision or change.
Trademarks
All trademarks referenced in this document are the
trademarks of their respective owners.
Revision History
• Added 047 to Non-Loading CSHW values in Model
Number Description chapter.
• Running edits.

Table of Contents
COM-SVN003B-EN 5
Model Number Descriptions . . . . . . . . . . . . . . 6
General Information . . . . . . . . . . . . . . . . . . . . . 7
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
POE Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Oil Handling . . . . . . . . . . . . . . . . . . . . . . . . 7
Oil Level . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Operating Envelope . . . . . . . . . . . . . . . . . . . . 7
Operating Map . . . . . . . . . . . . . . . . . . . . . . 7
Refrigerant Type . . . . . . . . . . . . . . . . . . . . . 8
Transportation, Handling, and Storage . . . 8
Pre-Installation Inspections . . . . . . . . . . . . 9
Repair Recommendations . . . . . . . . . . . . . . 9
Mechanical Failure . . . . . . . . . . . . . . . . . . 10
Electrical Failure . . . . . . . . . . . . . . . . . . . . 10
Two Types of Motor Failures . . . . . . . . . 10
Removal and Installation . . . . . . . . . . . . . . . . 11
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Compressor Replacement—Tandem
and Trio Compressor Sets . . . . . . . . . . . . 12
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Electrical Connections . . . . . . . . . . . . . . . . . 14
Leak Detection . . . . . . . . . . . . . . . . . . . . . . . 15
Vacuum Testing and Evacuation . . . . . . . . 15
Charging the System . . . . . . . . . . . . . . . . . . 16
Verification Before Start-Up . . . . . . . . . . . . 16
Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . 19

6COM-SVN003B-EN
Model Number Descriptions
Digits 1, 2, 3, 4 — Model Type
CSHW = 3.9 – 7.4 tons
Digits 5, 6, 7 — Nominal
Capacity in MBh
Digit 8 — Voltage
J = 200–230/60/3
K = 460/60/3, 380–415/50/3
D = 575/60/3
X = 380/60/3
Digit 9 — Unloading
0 = No Unloading
2 = Unloading (1 step Unloading
with solenoid not energized)
Digit 10 — Design Sequence
Factory Assigned
Digit 11 — Motor Protection
Type
0 = Internal Line Break
Digit 12 — Compressor
Connections Variation
0 = Standard Compressor
A = Standard Compressor, with Oil
Equalizer and Sight Glass
B = Combination Baseplate, with Oil
Equalizer and Sight Glass
Digit 13 - 17— Reserved for
Future Use
CSHW
(Non-Unloading) CSHW
(Unloading)
047 052
050 060
052 065
056 082
058 089
060
073
082
089

COM-SVN003B-EN 7
General Information
Overview
The purpose of this document is to provide installation and
service information for Trane CSHW compressors.
This document is not meant to be provide a step-by-step
procedure, but is intended to identify procedures or
precautions that may be unique to a Trane compressor and
should be taken into account to properly and safely
remove, install, and troubleshoot the compressor.
Each installation has its unique set of circumstances which
also must be taken into account by the service technician.
POE Oil
Oil Handling
POE oil is very hygroscopic, which means it absorbs
moisture very readily. Therefore, it is important to properly
handle the oil.
POE Oil Handling Guidelines
• Always use the smallest container size required for the
job requirements.
• Always leave the oil container tightly sealed until time
of use.
• Do not reuse oil that has been opened.
Oil Level
Single compressor: The oil level should be stable in the
sightglass.
Tandem and trio compressors:
•Operation —The oil level will vary depending on the
operating condition. Some conditions will result in oil
levels below the sight glass.
•Off —After several minutes, the oil levels should be the
same in each compressor and should be visible in the
sightglass. This is the best method to determine if the
system has sufficient oil.
Units overcharged with oil will operate with degraded
performance and could lead to compressor damage.
Operating Envelope
The compressor must be operated within the published
operating envelope.
Operating Map
Below figure represents the operating map for the CSHW
R-410A model compressors. For proper operation and
reliability, the compressor must always be operated
within the indicated limits shown in the operating map.
This includes both full unit operating map conditions of
the unit, and unit fault modes such as:
• Loss of evaporator air flow
• Loss of evaporator water flow
• Loss of condenser air flow
• Loss of condenser water flow
• Loss of refrigerant charge
Protection devices are required to keep the compressor
within the operating envelop during operation and fault
modes.
Table 1. Oil charge factory
Model Pints Liters
CSHW047 - CSHW073 3.2 1.5
CSHW082 - CSHW089 3.8 1.8
Notes:
1. Oil amount and type is also printed on the nameplate.
2. Use only Trane-approved oils and do not mix oils.

General Information
8COM-SVN003B-EN
Additional basic limitations on operating
conditions:
• Discharge temperature must not exceed 300°F
(Measure within 6 inches from discharge port).
• Low superheat is not recommended due to risk of oil
dilution of the compressor. Recommended minimums
are as follows:
– Electronic expansion valve 10°F.
– Thermal expansion valve 18-20°F.
• Minimum oil sump superheat 20°F.
• Maximum suction gas superheat 54°F.
• Minimum of 30 psid differential between suction and
discharge must be maintained.
• Voltage must be within the compression utilization
voltage range.
• Minimum and maximum saturated evaporating and
condensing temperatures are as shown in the
operating map.
• Excess liquid refrigerant in the compressor at start up
can cause Oldham coupling failure, involute breakage
and damaged bearings.
• When the refrigerant system charge exceeds 3 pounds
per ton, crankcase heaters are required.
• If required, heaters must be energized for a minimum
of eight hours prior to starting the compressor to
insure that liquid refrigerant is not in the compressor at
start up.
• Under normal operation compressor shall operate for
3 minutes minimum.
• Max Amps should not exceed listing on compressor
nameplate.
Refrigerant Type
CSHW compressors are approved for use with R-410A
refrigerant only. Any use of hydrocarbon refrigerants or air
is strictly prohibited!
Transportation, Handling, and
Storage
The compressor must be handled in the vertical position
(maximum 15° offset from vertical). Should the
compressor be handled in an upside down position, its
suitability for its use can not be guaranteed.
Figure 1. R-410A operating map for CSHW at 20°F suction superheat
60
80
100
120
140
160
-20-100 1020304050607080
Saturated Discharge Temperature (°F)
Saturated Suction Temperature (°F)
CSHW Operating Envelope --- R-410A
Full Load Operating Map
Unloaded Map; Reduced Operating Map

General Information
COM-SVN003B-EN 9
Damage to compressor or packaging should be reported
to the shipper immediately.
Use a proper method of lifting the compressor, both lifting
ears must be used with a spreader bar.
For approximate compressor weight, see the below table.
The compressor and its packaging must not be exposed to
rain and/or corrosive, flammable atmosphere.
The compressor must not be stored in an environment less
than -31°F (-35°C) or to exceed +160°F (+71°C).
Pre-Installation Inspections
Check the following before using the compressor:
• Compressor for visible shipping damage.
• Compressor is the correct model/part number.
• Compressor is the correct voltage.
Repair Recommendations
NOTICE
Compressor Damage!
Improper handling of the compressor could result on
compressor damage. A compressor that has been
tipped, dropped or transported in a non-upright position
could contain internal damage and it is recommended
that the compressor not be put into service.
WARNING
Heavy Objects!
Failure to follow instructions below or properly lift unit
could result in unit dropping and possibly crushing
operator/technician which could result in death or
serious injury, and equipment or property-only damage.
Ensure that all the lifting equipment used is properly
rated for the weight of the unit being lifted. Each of the
cables (chains or slings), hooks, and shackles used to
lift the unit must be capable of supporting the entire
weight of the unit. Lifting cables (chains or slings) may
not be of the same length. Adjust as necessary for even
unit lift.
Table 2. Compressor weight without oil charge
Model Weight (lb) Weight (kg)
CSHW 047, 050, 052, 056 83.8 38
CSHW 052-2 86 39
CSHW 058, 060, 073 86 39
CSHW 060-2 88.2 40
CSHW 065-2 90.4 41
CSHW 082, 089 99.2 45
CSHW 082-2, 089-2 101.4 46
WARNING
R-410A Refrigerant under Higher Pressure
than R-22
Failure to use proper equipment or components as
described below, could result in equipment failing and
possibly exploding, which could result in death, serious
injury, or equipment damage. The units described in this
manual use R-410A refrigerant which operates at higher
pressures than R-22. Use ONLY R-410A rated service
equipment or components with these units. For specific
handling concerns with R-410A, please contact your local
Trane representative.
Figure 2. Model CSHW
WARNING
Hazard of Explosion and Deadly Gases!
Never solder, braze or weld on refrigerant lines or any
unit components that are above atmospheric pressure
or where refrigerant may be present. Always remove
refrigerant by following the guidelines established by
the EPA Federal Clean Air Act or other state or local
codes as appropriate. After refrigerant removal, use dry
nitrogen to bring system back to atmospheric pressure
before opening system for repairs. Mixtures of
refrigerants and air under pressure may become
combustible in the presence of an ignition source
leading to an explosion. Excessive heat from soldering,
brazing or welding with refrigerant vapors present can
form highly toxic gases and extremely corrosive acids.
Failure to follow all proper safe refrigerant handling
practices could result in death or serious injury.

General Information
10 COM-SVN003B-EN
Mechanical Failure
Replace only the failed compressor in a tandem or trio set.
Important: On tandem or trio assemblies, the suction
and discharge lines must NOT be modified,
except for the use of slip joint couplings.
Other modification may cause oil return
issues and lead to compressor failure. Cut
the lines in a convenient place, remove the
compressor, and then unbraze the lines
from the compressor. On re-installation,
reinstall lines to compressor and
reassemble the cut lines utilizing a slip
coupling.
Minimize system and compressor open times to avoid
excessive moisture absorption by the POE oil. Maximum
suggested open time is 15 minutes.
Drain and replace oil in all the non-failed compressors.
The CSHW compressor has an oil drain with a Schrader®
valve that can be used to remove the oil (see Figure 2, p. 9).
Replace unit liquid line filter-drier. This is a very important
part of controlling moisture in R-410A POE oil systems.
Reuse the compressors mounting isolators or mounting
spacers that are used with the existing compressor
assembly.
Braze the compressor into the system. Compressor
connections are copper-plated steel. Use BAg-28, 40%
silver, with paste flux to make the copper tube connections
to the compressor.
Proceed with the following as described in the following
sections:
•“Leak Detection,” p. 15
•“Vacuum Testing and Evacuation,” p. 15
•“Charging the System,” p. 16
•“Verification Before Start-Up,” p. 16
Electrical Failure
Follow the mechanical failure guidelines. In addition to the
Mechanical Failure Guidelines, check for acid in the
system.
Test the acid condition of the oil in the compressors using
an acid test kit. Use Trane Part Numbers CHM00414 and
45006.
Two Types of Motor Failures
Light - If oil test kit is negative and oil is only slightly
discolored, treat in the same manner as a mechanical
failure.
Severe - If oil test kit is positive with strong pungent odor
and dark oil, drain and replace oil in all of the non-failed
compressors.
Reuse the compressor mounting isolators or mounting
spacers that are used with the existing compressor
assembly.
This type of failure requires changing both the suction and
liquid line filter-driers. Use replaceable filter-drier cores to
facilitate changing filter-driers, if required.
Install the suction filters no closer than the distance listed
in the following table. The distance is measured from the
centerline of the suction inlet tee.
1. Use acid removal type filter-drier cores in both the
suction filter and liquid line filter drier.
2. Change when the pressure drop exceeds 4 psig.
Test oil after 24 hours of operation. Change filter-drier
again if required. If oil is still acid, drain and replace oil in
all the non-failed compressors.
After system is clean, test kit indicates okay, remove the
suction clean up filter-drier and replace the liquid line drier
with standard filter drier cores.
WARNING
Hazard of Explosion!
Failure to follow instructions below could result in
death or serious injury or equipment or property-only
damage. Use only dry nitrogen with a pressure
regulator for pressurizing unit. Do not use acetylene,
oxygen or compressed air or mixtures containing them
for pressure testing. Do not use mixtures of a hydrogen
containing refrigerant and air above atmospheric
pressure for pressure testing as they may become
flammable and could result in an explosion. Refrigerant,
when used as a trace gas should only be mixed with dry
nitrogen for pressurizing units.

COM-SVN003B-EN 11
Removal and Installation
Only qualified personnel should install or repair
refrigeration systems. If you are not qualified, seek the
services of qualified personnel. The steps listed below are
not meant to be an exact step-by-step procedure, but are
intended to identify procedures or precautions that may
be unique to a Trane compressor and should be taken into
account to properly and safely remove and install the
compressor. Each installation has its unique set of
circumstances which must be considered by the service
technician to perform a safe and successful compressor
replacement.
Removal
• Prior to removing the compressor, open the unit
disconnect and place a lock on the disconnect to
prevent someone else from accidentally applying
power to the unit while it is under repair.
• Completely recover the refrigerant from the refrigerant
circuit being repaired. Do not release refrigerant to the
atmosphere! Use Responsible Refrigerant Practices. If
adding or removing refrigerant, the service technician
must comply with all Federal, State, and local laws.
• Before removing the electrical connections on the
compressor, use a voltmeter to check for the absence
of power on the compressor power terminals.
• After confirming the absence of power, remove the
electrical connections.
• Remove and measure oil from failed compressor prior
to compressor removal:
– CSHW compressors have an oil drain valve (see
Figure 2, p. 9) that allows oil to be drained out of the
compressor. After the refrigerant has been
recovered, pressurize the system with nitrogen to
help remove oil from the compressor.
– Record the amount of oil removed from the failed
compressor. The replacement compressor oil
charge should be adjusted to ensure that the
equivalent amount of oil remains in the unit.
Tip: Before removing the existing tubing from the
compressor, apply flux to the joint. This will aid in
the flow of the braze material and help keep the
joint clean for rebrazing. After fluxing, heat the joint
evenly to slightly higher temperature than the
melting temperature of the filler material. At this
point, the two parts of the assembly should be
easily separated.
• Refrigerant Connection Removal
Single compressor—Cut the refrigerant lines in a
convenient location that allows reassembly with slip
couplings. Then, unbraze the line from the compressor
and reuse it when the replacement is installed.
WARNING
Refrigerant under High Pressure!
Failure to follow instructions below could result in an
explosion which could result in death or serious injury
or equipment damage. System contains oil and
refrigerant under high pressure. Recover refrigerant to
relieve pressure before opening the system. See unit
nameplate for refrigerant type. Do not use non-
approved refrigerants, refrigerant substitutes, or
refrigerant additives.
WARNING
Hazard of Explosion and Deadly Gases!
Failure to follow all proper refrigerant handling
practices could result in death or serious injury.
Never solder, braze or weld on refrigerant lines or any
unit components that are above atmospheric pressure
or where refrigerant may be present. Always remove
refrigerant by following the guidelines established by
the EPA Federal Clean Air Act or other state or local
codes as appropriate. After refrigerant removal, use dry
nitrogen to bring system back to atmospheric pressure
before opening system for repairs. Mixtures of
refrigerants and air under pressure may become
combustible in the presence of an ignition source
leading to an explosion. Excessive heat from soldering,
brazing or welding with refrigerant vapors present can
form highly toxic gases and extremely corrosive acids.
WARNING
Pressurized Burning Fluid!
Failure to follow these instructions could result in death
or serious injury. Before opening a system, you must
remove refrigerant from both the high and low sides of
the system. If the pressure is not removed from both
sides of the system, pressure could still exist in the
system. If a torch is used to unbraze the tubing the
refrigerant and oil mixture could ignite.
WARNING
Hazardous Voltage w/Capacitors!
Failure to disconnect power and discharge capacitors
before servicing could result in death or serious injury.
Disconnect all electric power, including remote
disconnects and discharge all motor start/run
capacitors before servicing. Follow proper lockout/
tagout procedures to ensure the power cannot be
inadvertently energized. Verify with an appropriate
voltmeter that all capacitors have discharged.
For additional information regarding the safe discharge
of capacitors, see PROD-SVB06*-EN.

Removal and Installation
12 COM-SVN003B-EN
Compressor Replacement—Tandem
and Trio Compressor Sets
Definitions:
•Tandem—Two compressors on a single refrigerant
circuit.
•Trio—Three compressors on a single refrigerant
circuit.
There are special considerations that are unique to
replacing compressors in a tandem or trio set:
1. Only replace the failed compressor.
2. On tandem or trio assemblies, the suction and
discharge lines must not be modified, except for the
use of slip-joint couplings. Other modifications may
cause oil return issues and lead to compressor failure.
Cut the lines in a convenient place, remove the
compressor, and then unbraze the lines from the
compressor. On re-installation, reinstall lines to
compressor and reassemble the cut lines using a slip
coupling.
3. Change oil in all compressors in the tandem or trio
compressors whenever there is a failure.
•Use the oil charging valve on the compressor.
•Ensure that the same amount of oil that was
removed from the compressors is replaced with
new oil.
Installation
• Only qualified personnel should install or repair
refrigeration systems. If you are not qualified, seek the
services of qualified personnel.
• Pressure tests must be performed by qualified
personnel.
• The replacement compressor contains a nitrogen
charge of 5 psig.
• Remove the suction plug before the discharge plug to
avoid oil spray while opening the compressor.
• Keep exposure to the atmosphere at a minimum due to
POE oil. Remove the rubber plugs only when ready to
install the compressor. Plug other compressor on
tandem or trio compressors.
CSHW compressors are shipped with oil; the level should
be equal with the bottom of the equalizer port.
Recommendations for installation are as follows:
Single compressor circuit:
•All replacement CSHW compressors have an
equalizer port (closed with a rubber plug for storage
and shipping). For single applications, this
equalizer port will need to be brazed shut with a
1.125" tube and cap.
•If the replacement compressor requires a full oil
charge, then the compressor can be tipped away
from equalizer port while the port is brazed shut.
The as-shipped oil charge can remain in the
compressor.
•If the oil charge in the replacement compressor
needs to be reduced, oil can be poured out of the
equalizer prior to brazing shut.
•Ensure that the same amount of oil that was
removed with the failed compressor is replaced
with new oil.
Tandem or Trio compressor circuit:
•Remove and measure oil from failed compressor
and from existing manifolded compressor(s).
WARNING
Hazardous Voltage w/Capacitors!
Failure to disconnect power and discharge capacitors
before servicing could result in death or serious injury.
Disconnect all electric power, including remote
disconnects and discharge all motor start/run
capacitors before servicing. Follow proper lockout/
tagout procedures to ensure the power cannot be
inadvertently energized. Verify with an appropriate
voltmeter that all capacitors have discharged.
For additional information regarding the safe discharge
of capacitors, see PROD-SVB06*-EN.
WARNING
Hazard of Explosion and Deadly Gases!
Failure to follow all proper refrigerant handling
practices could result in death or serious injury.
Never solder, braze or weld on refrigerant lines or any
unit components that are above atmospheric pressure
or where refrigerant may be present. Always remove
refrigerant by following the guidelines established by
the EPA Federal Clean Air Act or other state or local
codes as appropriate. After refrigerant removal, use dry
nitrogen to bring system back to atmospheric pressure
before opening system for repairs. Mixtures of
refrigerants and air under pressure may become
combustible in the presence of an ignition source
leading to an explosion. Excessive heat from soldering,
brazing or welding with refrigerant vapors present can
form highly toxic gases and extremely corrosive acids.

Removal and Installation
COM-SVN003B-EN 13
•Remove equalizer rubber plug and drain oil from
replacement compressor.
•Install replacement compressor in unit using slip
couplings on suction and/or discharge tubing, as
necessary.
•Equalizer tubes that remain full diameter (1.125")
between compressors can also be reassembled
with slip couplings.
•Equalizer tubes which reduce to 0.25" tubes should
not be modified. If the 1.125" adapter tube is
damaged during removal from the failed
compressor, replace with new tube and cap.
•Recharge oil to compressors as necessary to
equally replace the oil amount that was removed.
a. Removal Instructions
Tip: Before removing the existing tubing from the
compressor, apply flux to the joint. This will aid in
the flow of the braze material and help keep the
joint clean for rebrazing. After fluxing, heat the joint
evenly to slightly higher temperature than the
melting temperature of the filler material. At this
point, the two parts of the assembly should be
easily separated.
b. Installation
c. Preparation:
i. For proper capillary action to occur, the tube and
the fitting must be free of oil, grease, burrs, and
oxide contamination. To remove the oil and
grease a commercial solvent or denatured
alcohol can be used. The surface may be
properly cleaned by brushing with a stainless
shell brush or by a stiff rubbing with emery cloth.
Wipe the joint clean to remove small foreign
particles such as emery dust, by wiping the
surface with a clean cloth. Once the surfaces are
clean, be careful not to touch them as oil from
the skin will contaminate the surfaces.
ii. Pre-fit the existing tubing into the compressor to
check that it has full insertion into the
compressor fitting.
iii. Apply flux with a brush to the outside of the
compressor connecting tubing, taking care to
evenly apply the flux around the entire diameter.
Care must also be taken not to get the flux inside
of the tubing as this may result in contamination
of the refrigerant system.
iv. Reinsert the tube into the compressor
connection. If the tubing does not stay fully
inserted, it must be restrained to prevent it from
backing out of the compressor connection
during the brazing process.
d. Brazing Technique
i. If possible, use a double-side torch while
brazing.
ii. Use 40% silver brazing alloy with flux.
iii. Start heating the tube first. Evenly heat the tube,
location 1 (see the figure below), until it reaches
a dull red color. When using flux, this color is
also a good indicator of when the proper brazing
temperature has been reached. Continue
heating the tube until the flux passes the
“bubbling” temperature range and becomes
quiet, completely fluid, and transparent—it
should have the appearance of clear water.
iv. Direct the flame from the tube to the fitting,
evenly heating it until the flux that may be
remaining in the fitting is also completely fluid.
v. Sweep the torch between the fitting and the
tube, locations 1 and 2 (see the figure below),
with most of the heat being applied to the
heavier and slower-heating fitting until the tube
and fitting reach and maintain a uniform heat in
both parts.
vi. Pull the flame slightly back and feed the brazing
material in between the fitting and the tube. If the
joint has been properly heated, the braze
material should flow around and into the joint.
Important: The heated base metal should melt the
filler; the heat from the torch flame should
not be what melts the filler.
vii.Once the braze material has flowed around and
into the joint, briefly move the torch around the
fitting to ensure complete capillary action into
the joint.
viii.Check the joint to visually ensure that the braze
material is completely around the joint.
e. Post-Braze
• When brazing refrigerant connections, protect
compressor body and terminal box from torch heat
damage.
Figure 3. Brazing locations 1 and 2
NOTICE
Equipment Damage!
Flux is corrosive and could lead to long-term problems
and equipment damage if not properly removed. If not
cleaned off, flux could hide leaks. Quench the joint with
water or a wet rag while the joint is still hot—but below
900°F—to shock off the flux.
2

Removal and Installation
14 COM-SVN003B-EN
• When brazing, always use a nitrogen purge to prevent
the formation of copper oxide contamination that can
damage the compressor.
Electrical Connections
CSHW 047-089
The phases on the terminal block are color coded:
• Red - PhaseL1
• Blue - PhaseL2
• None - PhaseL3
The CSHW compressor is designed for use with terminal
plugs.
Before starting the compressor, check the electrical
phasing with a phase sequence meter similar to an
Ideal-Sperry Model 61-520.
WARNING
Hazardous Service Procedures!
Failure to follow all instructions in this manual and on
the tags, stickers, and labels could result in death or
serious injury.
Technicians, in order to protect themselves from
potential electrical, mechanical, and chemical hazards,
MUST follow precautions in this manual and on the
tags, stickers, and labels, as well as the following
instructions: Unless specified otherwise, disconnect all
electrical power including remote disconnect and
discharge all energy storing devices such as capacitors
before servicing. Follow proper lockout/tagout
procedures to ensure the power can not be
inadvertently energized. When necessary to work with
live electrical components, have a qualified licensed
electrician or other individual who has been trained in
handling live electrical components perform these
tasks.
Figure 4. Color coded compressor power plug
NOTICE
Compressor Damage!
Operating the compressor with improper phasing could
cause compressor failure. Check phasing before starting
compressor.
Hermetic Feed
through

Removal and Installation
COM-SVN003B-EN 15
Leak Detection
Pressure Testing
• Use industry-standard and EPA-accepted techniques
for testing.
• Pressure tests must be performed by qualified
personnel.
• Use tools especially designed for leak testing.
• Do not exceed the high-side and low-side pressures
listed on the unit nameplate.
• If no test pressure value is listed on the nameplate of
the unit, a pressure of no more than 150 psig is
acceptable.
• The CSHW compressor has an internal check valve.
When pressurizing the system, it is important to never
allow the low side pressure to exceed the high side
pressure by more than 5 bar (72 psig). Greater
pressure differential could result in compressor
damage. Also slowly raise the pressure over a
2-minute time period to allow sufficient time for
internal pressures in the compressor to equalize.
• Pressure decay testing can be used to check for gross
leaks but will not be able to detect the location of a leak.
• After pressurizing the system use an R-410A leak
detection device to detect and locate leaks.
Vacuum Testing and Evacuation
• Use the procedure as described in the unit Installation,
Operation, and Maintenance manual.
• If no other information is available, use the following
information.
• Ensure that there is no voltage being applied to the
compressor terminals.
• Evacuate the unit to 500 microns.
• Hold vacuum for 30 minutes.
• Rapid pressure rise indicates a leak; locate and repair
the leak.
• Slow pressure rise indicates one of two possibilities:
– A small leak, indicated by a continuous rise in
pressure.
– Moisture in the system, indicated by a slow rise in
pressure and leveling-out at a pressure equivalent
to the moisture level. If this occurs, break the
WARNING
Hazard of Explosion!
Failure to follow instructions below could result in
death or serious injury or equipment or property-only
damage. Use only dry nitrogen with a pressure
regulator for pressurizing unit. Do not use acetylene,
oxygen or compressed air or mixtures containing them
for pressure testing. Do not use mixtures of a hydrogen
containing refrigerant and air above atmospheric
pressure for pressure testing as they may become
flammable and could result in an explosion. Refrigerant,
when used as a trace gas should only be mixed with dry
nitrogen for pressurizing units.
WARNING
Hazardous Pressures!
When using dry nitrogen cylinders for pressurizing units
for leak testing, always provide a pressure regulator on
the cylinder to prevent excessively high unit pressures.
Never pressurize unit above the maximum
recommended unit test pressure as specified in
applicable unit literature. Failure to properly regulate
pressure could result in a violent explosion, which could
result in death or serious injury or equipment or
property-only-damage. See maximum recommended
unit test pressure below.
NOTICE
Overpressure Damage!
Failure to follow these instructions could result in
compressor damage. Do not pressurize the low side of
the compressor by more than 5bar(72psig)higher
than the high side of the compressor within less than
two minutes.
NOTICE
Compressor Motor Damage!
Failure to follow these instructions could cause
compressor motor damage. Never use the compressor
as a vacuum pump. Never meg-ohm test or apply
power to the compressor while it is in a vacuum.
WARNING
Hazardous Voltage w/Capacitors!
Failure to disconnect power and discharge capacitors
before servicing could result in death or serious injury.
Disconnect all electric power, including remote
disconnects and discharge all motor start/run
capacitors before servicing. Follow proper lockout/
tagout procedures to ensure the power cannot be
inadvertently energized. Verify with an appropriate
voltmeter that all capacitors have discharged.
For additional information regarding the safe discharge
of capacitors, see PROD-SVB06*-EN.

Removal and Installation
16 COM-SVN003B-EN
vacuum with dry nitrogen and repeat evacuation
process to 500 micron.
• Once system is leak-tight, connect compressor repeat
the vacuum procedure, break vacuum with dry
nitrogen and evacuate to 500 microns. The vacuum
should be able to be maintained for four hours. Isolate
the vacuum pump so that the vacuum gauge only
reads the system pressure.
• Vacuum must be measured in the refrigeration system
and not at the vacuum pump.
Charging the System
Use R-410A refrigerant only! Follow the instructions in the
unit Installation, Operation, and Maintenance manual for
proper charging methods.
If there are no instructions available, use these guidelines:
• Evacuate the unit as described in “Vacuum Testing and
Evacuation,” p. 15.
• Ensure that the oil level is at least 1/2-sight glass in the
compressor
• Do not use the compressor to pull refrigerant into the
system.
• Charge liquid refrigerant into the high-side of the
unit—either into the condenser or liquid receiver, if so
equipped.
• Charge as much of the unit refrigerant charge as
possible before starting the compressor.
• Do not charge liquid refrigerant into the low side of the
compressor without the compressor running. Small
amounts of liquid may be metered through refrigerant
gauges into the suction line while the compressor is
operating.
• If the unit is equipped with suction and discharge
service valves, close them during the charging
procedure.
•Water chiller units—Always operate the chilled water
pumps while charging the unit to prevent freezing the
evaporator.
Verification Before Start-Up
Follow the instructions in the unit Installation, Operation,
and Maintenance manual. If there are no instructions
available, use these guidelines:
• Before starting the unit, verify that all service valves are
open.
• Energize the crankcase heater a minimum of 8 hours
before starting the compressor.
If the compressor is a replacement for a failed compressor
and has been charged in accordance with either the
procedures in the unit IOM or “Charging the System,” p. 16
in this manual, the compressor could be immediately
started after charging the system. The reason for this is
that the refrigerant has not had sufficient time to migrate
to the compressor and cause potential damage upon
startup. The system should set for no more 8 hours or
overnight with a refrigerant charge without crankcase
heater operation. If the time exceeds 8 hours or the unit
sits overnight, the crankcase heater must be operational
for a minimum of 8 hours prior to starting the compressor.
If liquid refrigerant was charged into the suction or low
side during the charging procedure, damage could still
occur.
WARNING
Hazardous Pressures!
Failure to follow these instructions could result in a
violent explosion, which could result in death or serious
injury. If a heat source is required to raise the tank
pressure during removal of refrigerant from cylinders,
use only warm water or heat blankets to raise the tank
temperature. Do not exceed a temperature of 150°F. Do
not, under any circumstances apply direct flame to any
portion of the cylinder.
NOTICE:
Compressors Failure!
To protect compressors from premature failure the unit
must be powered and crankcase heaters energized at
least 8 hours BEFORE compressors are started.

COM-SVN003B-EN 17
Start-Up
Follow the instructions in the unit Installation, Operation,
and Maintenance manual. If there are no instructions
available, use these guidelines:
• Never start the compressor without refrigerant in the
system.
• Never bypass the low pressure switch to start the unit.
• Monitor oil level for 60 minutes to ensure that oil
returns from the system.
• Check system pressures and temperatures to ensure
they are in line with unit design pressures. Refer to the
unit Installation, Operation, and Maintenance manual
for this information.
• To top off the unit, charge liquid refrigerant may added
by slowly throttling it into the suction line. This must be
done only when the compressor is operating.
• Do not overcharge the unit.
• Recommended system full load superheats—unless
specified differently in the unit Installation, Operation,
and Maintenance manual—is 16°F–20°F.
•Measuretheoilsump superheat. Oil sump superheat
should be greater than 20°F. Oil sump superheat is
calculated as follows:
Oil Sump Superheat = Oil Sump Temperature –
Saturated Suction Temperature
• Measure the oil sump temperature by placing a
thermocouple on the bottom of the compressor,
preferably in the center, and insulate it. Calculate sump
superheat. If less than 20°F, recheck the expansion
valve superheat and increase it. Low sump superheat
is indicated by foaming compressor oil.
• After fully charging the unit, recheck all pressure,
temperatures, and electrical readings.
NOTICE
Equipment Damage!
Failure to follow guidelines below could result in
equipment damage.

18 COM-SVN003B-EN
Maintenance
Check the unit Installation, Operation, and Maintenance
manual for specific instructions.
Operating conditions must always remain within the
operating range of the compressor. This includes:
• Operating pressures (suction and discharge pressure).
• Operating temperatures (suction, discharge, and
liquid).
• Operating parameters (compressor superheat, sub-
cooling, oil sump superheat, voltage, and amperage).
• Check all of the following on a regular basis:
– System operating conditions.
– System refrigerant charge level.
– Oil levels and oil color.
• Check electrical connections (prior to startup each
season).
• Check unit operating controls.
WARNING
Hazardous Voltage!
Failure to disconnect power before servicing could
result in death or serious injury. Disconnect all electric
power, including remote disconnects before servicing.
Follow proper lockout/tagout procedures to ensure the
power can not be inadvertently energized.

COM-SVN003B-EN 19
Troubleshooting
Important: Check the unit Installation, Operation, and
Maintenance manual for additional
information regarding diagnosis and
causes.
Compressor will not start
• Refer to the unit Installation, Operation, and
Maintenance manual for possible diagnostics codes
and corrective action.
• Verify:
– Compressor voltage is correct.
– All safety switches are closed.
– All the contacts on the contactor are pulled in.
– The internal motor overloads may be open.
Disconnect power to the unit and disconnect the
wires from the compressor terminals. With an ohm
meter, check to ensure that there is resistance
between T1-T2 and T3.
Compressor will not build up pressure
• Compressor is wired incorrectly—It will be noisy and
draw 1/2 the expected amps. Shut the compressor off
immediately. Running in this condition for more than
5 seconds may damage the compressor.
• Check to ensure that any bypass valves in the system
are not open.
• Four-way reversing valve may be stuck and not
switched properly bypassing from the high side to the
low side of the system; this situation is indicated by an
extremely warm suction inlet to the compressor.
Abnormal running noise
• Compressor is running backwards—Immediately shut
off the compressor and check wiring and proper
phasing.
• Excessive floodback—The superheat should be a
minimum of 16°F at full load and oil sump temperature
should be at least 20°F above the saturated suction
temperature. Measure the sump temperature at the
bottom center of the compressor. Chillers with
electronic expansion valves may operate with lower
superheats; check the unit Installation, Operation, and
Maintenance manual for proper operating superheats.
• Compressor is full of liquid on startup—The crankcase
heater either was not energized for a minimum of
eight hours, or it is defective.
• Mechanical damage to the compressor has occurred—
Check compressor amperage. It may also trip the
compressor motor protection module or other unit
electrical protection devices such as circuit breakers.
High-pressure control opens
• Check the unit Installation, Operation, and
Maintenance manual for possible diagnostics codes
and corrective action.
• Also check for:
– Defective condenser fan motors or controls.
– Dirty air-cooled or water-cooled condensers.
– Restricted air flow.
– Insufficient water flow.
– System overcharged with refrigerant. Check
superheat and system sub-cooling.
– Non-condensables in the system.
Low-pressure control opens
• Check the unit Installation, Operation, and
Maintenance manual for possible diagnostics codes
and corrective action.
• Also check for:
– Defective evaporator fan motors, belts, or controls.
– Defective TXV valve.
– Plugged liquid line filter.
– Liquid line solenoid valve does not open (if so
equipped).
– Dirty evaporators, either air-to-air or water-to-air.
– Restricted airflow.
– Insufficient evaporator water flow.
– System undercharged with refrigerant. Check
system superheat and sub-cooling.
WARNING
Hazardous Service Procedures!
Failure to follow all precautions in this manual and on
the tags, stickers, and labels could result in death or
serious injury.
Technicians, in order to protect themselves from
potential electrical, mechanical, and chemical hazards,
MUST follow precautions in this manual and on the
tags, stickers, and labels, as well as the following
instructions: Unless specified otherwise, disconnect all
electrical power including remote disconnect and
discharge all energy storing devices such as capacitors
before servicing. Follow proper lockout/tagout
procedures to ensure the power can not be
inadvertently energized. When necessary to work with
live electrical components, have a qualified licensed
electrician or other individual who has been trained in
handling live electrical components perform these
tasks.

Troubleshooting
20 COM-SVN003B-EN
Compressor short cycling
• Check the unit Installation, Operation, and
Maintenance manual for possible diagnostics codes
and corrective action.
• Also check for:
– Defective unit controls—maximum 12 starts per
hour.
– Compressors cycling on safety controls.
– Unit oversized.
– Building load is light—this is likely to occur prior to
building occupancy.
This manual suits for next models
9
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