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• Cylinders shall be kept upright.
• Ensure that the refrigeration system is earthed prior to charging
the system with refrigerant.
• Label the system when charging is complete (if not already).
• Extreme care shall be taken not to overfill the refrigeration
system.
• Prior to recharging the system it shall be pressure-tested
with OFN. The system shall be leak-tested on completion of
charging but prior to commissioning. A follow up leak test shall
be carried out prior to leaving the site.
17. Decommissioning
Before carrying out this procedure, it is essential that the technician
is completely familiar with the equipment in every detail. It is
recommended good practice that all refrigerants are recovered safely.
Prior to the task being carried out, an oil and refrigerant sample
shall be taken in case analysis is required prior to re-use of
reclaimed refrigerant. It is essential that electrical power is
available before the task is commenced.
a) Become familiar with the equipment and its operation.
b) Isolate the system electrically.
c) Before attempting the procedure ensure that:
- Mechanical handling equipment is available, if required,
for handling refrigerant cylinders.
- All personal protective equipment is available and being
used correctly.
- The recovery process is supervised at all times by
a competent person.
- Recovery equipment and cylinders conform to
the appropriate standards.
d) Pump down the refrigerant system, if possible.
e) If a vacuum is not possible, make a manifold so that
refrigerant can be removed from various parts of the system.
