QBD COOLING SYSTEMS INC.
QBD.COM
26
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Always use QBD supplied OEM parts only. Use of non-OEM
parts will not only void the warranty but may also lead to a fire,
explosion, serious injury or death.
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Only trained and certified technician, for Hydrocarbon
systems, should service these coolers.
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Use extreme caution and follow all local/regional codes for
transportation or relocation of Hydrocarbon coolers.
Ensure that the leak detector equipment
being used is suitable for use with R-290
refrigerant, i.e. non-sparking, adequately
sealed and intrinsically safe.
Presence of a Fire Extinguisher
If any hot work is to be conducted on the
cooler or any associated parts, appropriate
fire extinguishing equipment shall be
available on hand. Make sure a dry powder
or CO2 fire extinguisher is available
adjacent to the charging area.
No Ignition Sources
Any person carrying out work on an R-290
refrigeration
system,
which
involves
exposing any pipe work containing or has
contained flammable refrigerant, shall not
carry any sources of ignition in such a
manner that it may lead to the risk of fire or
explosion.
All possible ignition sources, including
cigarette smoking, should be sufficiently far
away from the site of installation, repairing,
removal and disposal during which R-290
refrigerant can possibly be released to
surrounding space.
If brazing or welding is required, this should
be performed in an area detached from the
cooler. If this is not possible, then the
system should be fully evacuated using
guidelines as outlined in QBD service
documents.
Ventilated Area
Ensure that the area is in the open or that it
is adequately ventilated before breaking into
the system. Ventilation should continue for
the duration of the work process. The
process
should
safely
disperse
any
released
R-290
refrigerant
to
the
atmosphere.
Checks to the Refrigeration Equipment
Where electrical components are being
replaced,
they are to be “fit for purpose” and
to the correct specifications. At all times the
manufacturer’s maintenance and service
guidelines are to be followed. If in doubt
consult QBD.
22.
RECOMMENDED SERVICE
PROCEDURES FOR HC COOLER
If diagnosis indicate failure of any sealed
system component (e.g. compressor,
evaporator or condenser leak, partial
blockage, full/partial loss of refrigerant, etc.),
please follow recommended procedures
below:
Venting or Recovery
R-290 refrigerant recovery is not required
under SNAP but may still be called for
under
other
authorities,
controls
or
practices. Always follow local laws and
regulations for recovery or venting of
hydrocarbon refrigerant.
If the HC refrigerant is to be vented to the
atmosphere, either the unit should be
moved to a well ventilated area before the