Charging Procedures - Tecnolux JC09CA16B1R290 Mode D'emploi

The refrigerant charge shall be recovered into the correct
recovery cylinders. The system shall be "flushed" with OFN to
render the unit safe. This process may need to be repeated
several times. Compressed air or oxygen shall not be used for
this task. Flushing shall be achieved by breaking the vacuum in
the system with OFN and continuing to fill until the working
pressure is achieved, then venting to atmosphere, and finally
pulling down to a vacuum. This process shall be repeated until
no refrigerant is within the system. When the final OFN charge
is used, the system shall be vented down to atmospheric
pressure to enable work to take place. This operation is
absolutely vital if brazing operations on the pipe-work are to
take place. Ensure that the outlet for the vacuum pump is not
close to any ignition sources and there is ventilation available.

8. Charging procedures

In addition to conventional charging procedures, the following
requirements shall be followed.
- Ensure that contamination of different refrigerants does not
occur when using charging equipment. Hoses or lines shall be
as short as possible to minimise the amount of refrigerant
contained in them.
- 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.
9. Decommissioning
Before carrying out this procedure, it is essential that the
technician is completely familiar with the equipment and all its
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.
• Become familiar with the equipment and its operation.
• Isolate system electrically.