Trane R Series Installation Operation & Maintenance page 112

RTAC-SVX002A-EN
Maintenance Procedures
CAUTION
Evaporator Damage!
The tubes are rolled at both ends and
in the center. When replacing tubes,
take care to ensure that the tube is re-
moved and rolled into the center tube
sheet properly. Failure to do so could
result in damage to the tubes and im-
proper operation of the system.
Compressor Replacement
If a compressor needs to be replaced
follow the procedures listed below.
1. Isolate the refrigerant charge outside
of the compressor and close all four
valves leading to the compressor. This
includes the oil line service valve located
on the oil filter cover of the compressor,
the valve on the oil return line from the
evaporator, the discharge service valve,
and the suction service valve. In the
event that the optional suction service
valve was not ordered with the unit, in-
sure that the liquid line service valve is
closed.
2. Disconnect power to the chiller. Re-
move the electrical junction box cover
and disconnect the wires.
WARNING
Hazardous Voltage!
Disconnect all electric power, includ-
ing remote disconnects before ser-
vicing. Follow proper lockout/tagout
procedures to ensure the power can
not be inadvertently energized. Fail-
ure to disconnect power before ser-
vicing could result in death or serious
injury.
3. Evacuate the compressor through the
service fitting provided. If the unit does
not have suction service valves, this will
include evacuating the low side of the
system as well. Disconnect all four lines
attached to the compressor, as well as
the junction box. Remove three screws
from the bottom of the compressor.
4. Remove the compressor by sliding it
out of the chiller onto a well supported
skid or other platform. The compressor
is very heavy, so insure that the support
is sturdy. A piece of 1x4 lumber placed
between the isolators works well to sup-
port the compressor feet as it is pulled
from the chiller.
5. Install the new compressor. Reinstall
all lines, wires, and screws. Open the
service valves, and trim charge as re-
quired.
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