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6.6
Unbrazing system components
WARNING
Explosive flame! Burning! Oil-refrigerant mixtures are highly flammable.
Remove all refrigerant before opening the system. Avoid working with an
unshielded flame in a refrigerant charged system.
Before opening up a system it is important to remove all refrigerant from both the high and low
sides of the system. If the refrigerant charge is removed from a scroll-equipped unit from the high
side only, it is possible for the scrolls to seal, preventing pressure equalization through the
compressor. This may leave the low side shell and suction line tubing pressurized. If a brazing
torch is then applied to the low side while the low side shell and suction line contain pressure, the
pressurized refrigerant and oil mixture could ignite when it escapes and contacts the brazing flame.
To prevent this occurrence, it is important to check both the high and low sides with manifold
gauges before unbrazing. Instructions should be provided in appropriate product literature and
assembly (line repair) areas. If compressor removal is required, the compressor should be cut out
of system rather than unbrazed.
7
Dismantling & disposal
Removing oil and refrigerant:
▪
Do not disperse in the environment.
▪
Use the correct equipment and method of removal.
▪
Dispose of oil and refrigerant according to national legislation and
regulations.
▪
Dispose of compressor according to national legislation and regulations.
DISCLAIMER
1. The contents of this publication are presented for informational purposes only and are not to
be construed as warranties or guarantees, express or implied, regarding the products or
services described herein or their use or applicability.
2. Emerson Climate Technologies GmbH and/or its affiliates (collectively "Emerson"), as
applicable, reserve the right to modify the design or specifications of such products at any time
without notice.
3. Emerson does not assume responsibility for the selection, use or maintenance of any
Responsibility for proper selection, use and maintenance of any Emerson product remains
solely with the purchaser or end user.
4. Emerson does not assume responsibility for possible typographic errors contained in this
publication.
26
product.
C6.2.44/0219/E
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