22
PART-SVN234B-EN
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 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
Contains Refrigerant!
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 Ingersoll Rand representative.
WARNING
Hazard of Explosion 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 Start to Finish™ 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 an appropriate
voltmeter 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.
– 090–181 nominal capacity compressor terminal
blocks are marked: T1 is marked red, T2 is marked
blue, and T3 has no mark (see
).
•
Remove oil prior to compressor removal:
– 182–361 Nominal Capacity Compressors
•
182–361 nominal capacity compressors have an
oil drain valve (see
