MIRU S26PRO
EN
27
www.eberg.eu
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 orlines 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.
a.
Become familiar with the equipment and its operation.
b.
lsolate system electrically.
c.
Before attempting the procedure ensure that: mechanical handling equipment is availa ble, if
required, for handling refrigerant cylinders; all personal protective equipment is availa ble and
being used correctly; the recovery process is supervised at all limes by a competent person;recovery
equipment and cylinders conform to the appropriate standards.
d.
Pump down refrigerant system, if possible.
e.
lf a vacuum is not possible, make a manifold so thai refrigerant can be rema ved from various parts
of the system.
f.
Make sure that cylinder is situated on the scales before recovery takes place.
g.
Start the recovery machine and operate in accordance with manufacturer’s instruc tions.
h.
Do not overfill cylinders. (No mare than 80 % volume liquid charge).
i.
Do not exceed the maximum working pres sure of the cylinder, even temporarily.
j.
When the cylinders have been filled correctly and the process completed, make sure that the cylinders
and the equipment are rema ved from sile promptly and all isolation valves on the equipment are
closed off. k. Recovered refrigerant shall not be charged inio another refrigeration system unless it
has been cleaned and checked.
10. LABELLING
Equipment shall be labelled stating thai it has been decommissioned and emptied of refrigerant. The label
shall be dated and signed. Ensure thai there are labels on the equipment stating the equipment contains
flammable refrigerant.
11. RECOVERY
When removing refrigerant from a system, either for servicing or decommissioning, il is recommended
good practice that all refrigerants are removed safely. When transferring refrigerant inio cylinders, ensure
thai only appropriate refrigerant recovery cylinders are employed. Ensure thai the correct number of
cylinders for holding the system charge are available. All cylinders to be used are designated for the
recovered refrigerant and labelled for that refrigerant (i.e. special cylinders for the recovery of refrigerant}.
Cylinders shall be complete with pressure relief valve and associated shut-off valves in good working
order. Empty recovery cylinders are evacuated and, if possible, cooled before recovery occurs.
The recovery equipment shall be in good working order with a set of instructions concerning the
equipment thai is at hand and shall be suitable for the recovery of flammable refrigerants. In addition, a set
of calibrated weighing scales shall be available and in good working order. Hoses shall be complete with
leakfree disconnect couplings and in good condition. Before using the recovery machine, check thai il is in
satisfactory working order, has been properly maintained and thai any associated electrical components
