Compressor Motor Mount; Disassembly; Economizer Removal - Trane CenTraVac CDHG Series Installation Manual

NOTICE
Equipment Damage!
Properly support the compressor casting foot to
avoid prevent breakage and equipment damage.
Note: Plan ahead where the compressor will be secured.
Build a suitable platform to support the assembly
before the lift. Gently set compressor onto
prefabricated pre-formatted support. Use care not to
damage the cast compressor foot (see foot in
8, p. 24). Similarly, avoid damage to the discharge
volute flange (see discharge flange in
24).
8. Remove the compressor/motor assembly. Remove the
locating dowel pins from the compressor foot and
discharge flange connections as shown in
24 and Figure 9, p. 24. To remove the dowel pin, first
remove the nut on the dowel pin, place a bushing on
the pin, and then reinstall the nut. As the nut is
tightened, the dowel pin should pull out of its hole; at
this point, remove the compressor/motor assembly.

Compressor Motor Mount

Disassembly

If additional vertical clearance is required, the height of the
compressor motor mount can be reduced. Use the
following procedure:
1. Before cutting off the motor mount, first fabricate a 1/4-
inch steel backing plate.
a. Cut the backing plate to shape and clamp it to the
motor mount.
b. Drill four 1/4-inch holes through the motor mount
and the backing plate as shown in
These holes with bolts or roll pins installed will be
used to align the components during reassembly.
c. Remove the backing plate.
2. Using an oxyacetylene torch, cut the mount as shown
in Figure 16, p. 27.
During reassembly, use the backing plate with bolts or roll
pins to locate the pieces properly. After the pieces are
located, Trane recommends welding the mount and
backing plate in place.
CVHE-SVN04R-EN
Figure
Figure 9, p.
Figure 8, p.
Figure 16, p. 27.
Figure 16. Motor support detail
Compressor Motor
Cut Here

Economizer Removal

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.
WARNING
Heavy Object!
Failure to follow instructions below could result in
unit dropping which could result in death or serious
injury, and equipment or property-only damage.
Ensure that all the lifting equipment used is properly
rated for the weight of the unit being lifted. Each of the
cables (chains or slings), hooks, and shackles used to
lift the unit must be capable of supporting the entire
weight of the unit. Lifting cables (chains or slings)
may not be of the same length. Adjust as necessary
for even unit lift.
Use the following steps to remove the economizer if
additional horizontal clearance is required.
1. Support the weight of the economizer with a movable
floor jack. Do not lift the economizer; simply support it.
Economizer weights are provided in
Disassembly
1/4-inch Steel
Backing Plate
Alignment
Bolt Holes
Table 11, p. 20;
27