Aktobis WDH-930EEW Operating Manual - Page 8

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Aktobis WDH-930EEW Operating Manual
17. marking
The equipment must be marked to indicate that it has been taken out of service and that the
refrigerant has been drained. The marking must be dated and signed. Ensure that there are
markings on the equipment stating that the equipment contains flammable refrigerant.
18. reprocessing
When removing refrigerant from a system, either for maintenance or decommissioning, it is
recommended standard practice that all refrigerants are safely removed. When transferring
refrigerant into cylinders, ensure that only suitable refrigerant recovery cylinders are used for
this purpose. Ensure that the correct number of cylinders are available to hold the total amount
of refrigerant. All cylinders used must be suitable and labelled for the refrigerant being
reprocessed (i.e. special cylinders for reprocessing refrigerant). The cylinders must have a
pressure relief valve and a connected shut-off valve and be in good working order. Empty
reprocessing cylinders shall be drained of air and, if possible, cooled before reprocessing.
The reprocessing plant shall be in good working order with appropriate instructions concerning
the respective equipment and shall be suitable for the reprocessing of flammable refrigerants. In
addition, a set of calibrated scales in good working order must be available. Hoses must be
complete with leak-free and proper disconnect couplings. Before using the recovery unit, check
that it is in good working order, that it has been properly maintained and that all associated
electrical components are sealed to prevent ignition in the event of a refrigerant release. If in
doubt, contact the manufacturer.
The reprocessed refrigerant must be returned to the refrigerant supplier in the correct
reprocessing cylinder and the appropriate disposal certificate must be arranged. Do not mix
refrigerants in remanufacturing units and especially not in cylinders.
If a compressor or compressor oils are to be removed, ensure that they have been evacuated to
an acceptable level to ensure that no flammable refrigerant remains in the lubricant. The
evacuation process must be carried out before returning the compressor to the suppliers. Only
electrical heating of the compressor housing may be carried out to speed up this process. When
draining oil from a system, this must be done in a safe manner.
Aktobis AG, Borsigstr. 20, D-63110 Rodgau / Germany
www.AKTOBIS.de