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NOTICE:
Handle with Care!
Failure to follow instructions below could result in
equipment damage.
The cast iron base of the compressor and the discharge
flange of the volute can be broken easily if rough
handling of the compressor/motor assembly is allowed.
Take great care to prevent this breakage when removing
the compressor/motor assembly and setting it down, or
when moving it laterally on the floor (e.g., on rollers, etc).
Take extra care to gently sit the compressor/motor
assembly down and avoid letting it swing or drop into an
obstruction while lifting or moving it.
10. Remove the compressor/motor assembly. Remove the
two locating roll pins from the compressor and/or
compressor base. Grip each pin and pull out of its hole;
at this point, remove the compressor/motor assembly.
Economizer Removal
WARNING
Heavy Objects!
Failure to follow instructions below or properly lift
component could result in component dropping and
possibly crushing operator/technician 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
component being lifted. Each of the cables (chains or
slings), hooks, and shackles used to lift the component
must be capable of supporting the entire weight of the
component. Lifting cables (chains or slings) may not be
of the same length. Adjust as necessary for even
component lift.
WARNING
Refrigerant 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 oil and
refrigerant and may be under positive 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.
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.
Maximum economizer weight is provided in Table 1, p.
9; also see submittal.
2. If the unit has insulation, remove the insulation and
loosen the bolts on the condenser liquid line flange.
CVHM-SVN001C-EN
Loosen the bolts on the evaporator liquid line flange.
See
Figure
14. Do not remove the bolts at this time.
Figure 14. Evaporator-Condenser-Economizer line
flanges
3. This connection is near the bottom of the evaporator.
See Figure 14. Do not remove the bolts at this time.
4. Economizers are connected to the evaporator shell via
bolted flanges. See Figure 16, p. 18. Remove the bolts
at this flanged connection.
5. Remove the economizer vent pipe flange bolts on the
economizer and the vent pipe to the compressor first
stage volute connection flange bolts. Remove
economizer vent line (unless the compressor has
already been removed to gain vertical clearance.)
6. Secure economizer with appropriate rigging.
7. Remove the bolts from the condenser and evaporator
liquid line connection flanges. Adjust the floor jack as
necessary to support the weight of the economizer.
8. Remove the economizer vent pipe flange bolts to
loosen the economizer. When the bolts are free, back
the economizer away from the chiller. The economizer
may tend to rotate off the jack. Be prepared to offset
any rotation.
9. Move the economizer away from the chiller and set it
on a pallet. Cover all openings to prevent the entry of
foreign material into the economizer, condenser and
compressor.
10. Use the reverse order to reassemble the economizer
on the chiller. Be sure to install new O-rings at the
appropriate joints.
Disassembly
17
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