COM-SVN01D-EN
13
Removal and Installation
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 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
Explosion Hazard and Deadly Gases!
Failure to follow all proper safe 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.
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
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 a CAT III or IV
voltmeter rated per NFPA 70E that all capacitors have
discharged.
For additional information regarding the safe discharge of
capacitors, see PROD-SVB06*-EN.
•
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:
•
Compressor power terminals.
•
Compressor motor protection module.
•
After confirming the absence of power, remove the
electrical connections.
–
Mark the electrical wires so they can be placed back
on the same terminal on the replacement
compressor to prevent improper phasing.
–
CSHD compressor terminal blocks are marked: T1 is
marked red, T2 is marked blue, and T3 has no mark
(see
