QBD COOLING SYSTEMS INC.
QBD.COM
25
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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.
should hold a valid certificate from an
industry accredited authority.
General
approach
to
handling
of
Hydrocarbon Refrigerant
All flammable refrigerant gases when mixed
with air form a flammable mixture. The
effect of ignition of such a mixture can be
severe. It is therefore important that
appropriate
safety
requirements
are
observed at all times when working with
flammable refrigerants.
Any
equipment
and
tools
(including
measuring equipment) used in the process
of repair must be suitable for use with R-290
refrigerant. Particular attention is to be paid
to the selection of the following:
-
Refrigerant recovery units (no external
brushes)
-
Refrigerant leak detector (non-sparking,
adequately sealed and intrinsically safe)
-
Electric test meter
-
Refrigerant recovery cylinder
-
Portable lighting
If possible, it is recommended that the
cooler/cooling deck be removed from its
existing
position
to
a
controlled
workshop
environment
suitable
to
conduct the repair safely.
Safety Checks
Prior to conducting maintenance or service
on R-290 coolers, perform all necessary
safety checks to ensure the risk of ignition is
minimized. Please comply with the following
precautions:
-
Work Procedure:
Work shall be undertaken only under a
controlled procedure so as to minimize the
presence of flammable gas or vapor while
work is being performed. Prior to work
taking place the area surrounding the
equipment is to be surveyed to establish
any flammable hazards or ignition risks.
Display “NO-SMOKING” signs.
-
General Work Area
All maintenance staff and personnel working
near the area should be notified as to the
nature of work being carried out. Work in
confined spaces should be avoided. The
area around the workspace is to be
sectioned off. Ensure that the condition
within the work area is safe and free of any
flammable materials.
-
Checking for presence of Refrigerant
The area shall be checked with an
appropriate refrigerant detector prior to and
during work to ensure the technician is
aware
of
any
potentially
flammable
conditions.
! CAUTION
R-290 is the refrigerant used in this cooler
and it is odourless.