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PY5G--B: Installation Instructions
Decommissioning
This unit is designed to provide many years of comfort. Eventually, this
unit will need to be replaced.
Work procedure for decommissioning:
1. All maintenance staff and others working in the local area shall be
instructed on the nature of work being performed. Any nearby
confined space work shall be avoided.
2. If any hot work is to be conducted on the refrigeration system or
associated parts, a fire extinguisher shall be available on hand. A
dry powder or CO2 fire extinguisher shall be located near the
refrigerant charge recovery area.
3. Potential ignition sources, including cigarette smoking, must not be
used by the technician and must be kept far away from the unit site.
4. Ensure that electrical power is available to run recovery equipment
prior moving to the next step.
5. Using a R-454B leak detector, check around the area of the unit for
presence of refrigerant. Note: Leak detector must be non-sparking
and adequately sealed.
6. Shut off main gas shut-off valve to appliance.
7. Shut off power to unit and install lockout tag on the electrical whip
to the unit.
8. Remove gas line to gas valve and cap.
9. Before beginning recovery of the refrigerant:
a. Make sure that handling equipment is available, if needed, to
handle the refrigerant recovery cylinders.
b. All personal protective equipment is available, and must be used
correctly.
c. Recovery process must be performed by an EPA-certified
technician.
d. All recovery equipment and cylinders must conform to
appropriate standards and be suitable for the recovery of
FLAMMABLE REFRIGERANTS (R-454B).
10. Recovery process:
a. Technician must be present during the entire recovery process.
b. Use a recovery cylinder that is for R-454B and do not mix
refrigerants. If possible, use an empty cylinder and cool before
use. Cylinders shall be complete with pressure-relief valve and
associated shut-off valves in good working order. Make sure the
recovery cylinder is situated on the scale prior to recovery.
c. Note the original charge amount listed on the rating plate. Make
sure that there are sufficient recovery cylinders available to
recover all the charge.
d. Before using the recovery machine, check that it is suitable for
use with FLAMMABLE REFRIGERANTS (R-454B), is in
satisfactory working order, has been properly maintained, and
associated electrical components are sealed to prevent ignition in
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Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
the event of a refrigerant release. If there are any doubts, please
contact the recovery machine manufacturer before using.
e. Connect recovery equipment to gauge ports on unit and to the
recovery cylinder.
f. In accordance with all recovery machine instructions, begin the
recovery machine.
g. Cylinders must not be overfilled (No more than 80% volume
liquid charge). Do not exceed the maximum working pressure of
the cylinder.
h. When the cylinders have been filled correctly and the evacuation
process is complete, close all cylinder valves are closed off.
i. Record the amount of R-454B refrigerant recovered and note on
the logs of each cylinder used.
j. Cut out the form below and fill out, sign, and date. Affix the form
in a prominent location on the unit using tape.
Model Number:
Serial Number:
Date:
Signature:
k. If refrigerant was not recovered in decommission process. Do
not fill out the decommissioned label above. Ensure all A2L
labeling is still on unit.
l. Recovered refrigerant shall not be charged into another
REFRIGERATING SYSTEM unless it has been cleaned and
checked.
m.Recovered refrigerant shall be returned to the refrigerant supplier
in the correct recovery cylinder, and the relevant waste transfer
note arranged. Do not mix refrigerants in recovery systems, and
especially not in cylinders.
n. If compressors or compressor oils are to be removed, ensure that
they have been evacuated to 200 microns or less to make certain
that R-454B does not remain within the lubricant. The
evacuation process shall be carried out prior to returning the
compressor to the supplier. The crankcase electric heat may be
used to accelerate the compressor evacuation process. A torch
must not be used. When oil is drained from a system, it shall be
carried out safely.
Edition Date: 04/24
47
DECOMMISSIONED
UNIT EMPTIED OF REFRIGERANT
Catalog No: IM-PY5G-02
Replaces: New
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