Refrigeration System - Trane IntelliPak 1 with Symbio 800 Installation, Operation And Maintenance Manual

Service and Maintenance

Refrigeration System

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
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.
Refrigerant Evacuation and Charging
NOTICE
Compressor Damage!
Failure to follow instructions below result in
permanent damage to the compressor.
The unit is fully charged with R-410A refrigerant from
the factory. However, if it becomes necessary to
remove or recharge the system with refrigerant, it is
important that the following actions are taken.
The recommended method for evacuation and dehydration
is to evacuate both the high side and the low side to 500
microns or less. To establish that the unit is leak-free, use a
standing vacuum test. The maximum allowable rise over a
15 minute period is 200 microns. If the rise exceeds this,
there is either still moisture in the system or a leak is
present.
136
Important: Do Not release refrigerant to the atmosphere! If
adding or removing refrigerant is required, the
service technician must comply with all
federal, state, and local laws.
• To prevent cross contamination of
refrigerants and oils, use only dedicated R-
410A service equipment.
• Disconnect unit power before evacuation
and do not apply voltage to compressor
while under vacuum. Failure to follow
these instructions will result in compressor
failure.
• Due to the presence of POE oil, minimize
system open time. Do not exceed 1 hour.
• When recharging R-410A refrigerant, it
should be charged in the liquid state.
• The compressor should be off when the
initial refrigerant recharge is performed.
• Charging to the liquid line is required prior
to starting the compressor to minimize the
potential damage to the compressor due to
refrigerant in the compressor oil sump at
startup.
• If suction line charging is needed to
complete the charging process, only do so
with the compressor operating. Do not
charge liquid refrigerant into the suction
line with the compressor off! This
increases both the probability that the
compressor will start with refrigerant in the
compressor oil sump and the potential for
compressor damage.
• Allow the crankcase heater to operate a
minimum of 8 hours before starting the
unit.
Charge Storage
Due to the reduced capacity of the microchannel
condenser coil compared to the round tube plate fin
evaporator coil, pumping refrigerant into the condenser coil
to service the refrigerant system is no longer an option.
Compressor Oil
Refer to "CSHD and CSHN Compressors," p. 137
appropriate scroll compressor oil charge. Remove and
measure oil from any compressor replaced. Adjust oil in
replacement compressor to prevent excessive oil in
system. Anytime a compressor is replaced, the oil for each
compressor within the manifold must be replaced.
The scroll compressor uses Trane OIL00079 (one quart
container) or OIL00080 (one gallon container) without
substitution. Discoloration of the oil indicates that an
abnormal condition has occurred. If the oil is dark and
smells burnt, it has overheated because of the following:
• Compressor operating at extremely high condensing
temperatures
for the
RT-SVX072D-EN