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Trane CenTraVac CVHE - Chiller Damage from Water in Tubes; Refrigerant Charge Safety; Equipment Damage from Mixing Refrigerants;Oils; Leak Testing Procedures

Trane CenTraVac CVHE
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CVHE-SVX005C-EN
91
NOTICE
Chiller Damage!
Failure to ensure that water is not present in tubes
during evacuation could result in freezing tubes,
damaging the chiller.
Refrigerant Charge
WARNING
Refrigerant May Be Under Positive
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 and may be under
positive pressure; system may also contain oil.
Recover refrigerant to relieve pressure before
opening the system. See unit nameplate for
refrigerant type. Do not use non-approved
refrigerants, refrigerant substitutes, or non-approved
refrigerant additives.
NOTICE
Equipment Damage!
Mixing refrigerants or oils could result in equipment
damage including bearing damage, introduction of
acids into the chiller, or continuous purge pump-out
in high-head/high ambient applications.
CenTraVac™ chillers are manufactured with different
refrigerant/oil systems: 1) chillers using R-123
refrigerant and OIL00022 compressor oil, and 2)
chillers using R-514A refrigerant and various Trane
POE-based compressor oils.
Always verify proper refrigerant and oil for your
chiller. Do NOT mix refrigerants and oils.
This Installation, Operation, and Maintenance manual
applies to CenTraVac™ chillers with two different
refrigerant and compressor oil systems:
R-123 refrigerant and OIL00022 compressor oil.
R-514A refrigerant and Trane OIL00379/OIL00380
compressor oil.
NOTICE
Equipment Damage!
Failure to follow instructions below could result in
equipment damage.
Follow oil use instructions for post-service
compressor air-run procedures.
For post-service compressor air-run procedures on
CenTraVac™ chillers that use R-514A refrigerant and POE
oil:
1. Use Trane OIL00381/OIL00382 compressor oil for the
air-run procedure.
2. Upon completion of the air-run procedure, drain the
OIL00381/OIL00382 from the sump.
3. After unit final assembly and evacuation, refill the sump
with Trane OIL00379/OIL00380.
Important: Verify proper refrigerant and compressor oil for
your chiller before proceeding!
For chillers with R-123 refrigerant, refer to Installation,
Operation, and Maintenance: R-123 Low-Pressure
Refrigerant Handling Guidelines Conservation and Safe
Handling of R-123 Refrigerant in Trane Chillers for Service
Technicians (CTV-SVX05*-EN).For chillers with R-514A
refrigerant, refer to Installation, Operation, and
Maintenance: R-514A Low-Pressure Refrigerant Handling
Guidelines Conservation and Safe Handling of R-514A
Refrigerant in Trane Chillers for Service Technicians (CTV-
SVX008*-EN)
Leak Testing
WARNING
Explosion Hazard!
Failure to follow safe leak test procedures below
could result in death or serious injury or equipment or
property-only-damage.
Never use an open flame to detect gas leaks. Use a
leak test solution for leak testing.
WARNING
Hazardous Pressures!
Failure to follow instructions below 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.
Important: If leak testing is required, contact a Trane
Service Agency.
Recommended System
Maintenance
NOTICE
Proper Water Treatment Required!
The use of untreated or improperly treated water
could result in scaling, erosion, corrosion, algae or
slime.
Use the services of a qualified water treatment
specialist to determine what water treatment, if any, is
required. Trane assumes no responsibility for
equipment failures which result from untreated or
improperly treated water, or saline or brackish water.
Recommended Maintenance

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