Bosch Climate 5000 MS 18 Installation Manual page 23

• Prior to recharging the system it shall be pressure-tested with OFN.
The system shall be leak-tested on completion of charging and 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 and all its details. 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.
A case analysis is required prior to the re-use of reclaimed refrigerant.
It is essential that electrical power is available before the task is
commenced.
1) Become familiar with the equipment and its operation.
2) Isolate the system electrically.
3) 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.
4) Pump down refrigeration system, if possible.
5) If a vacuum is not possible, make a manifold so that refrigerant can
be removed from various parts of the system.
6) Make sure that the cylinder is situated on the scales before recovery
takes place.
7) Start the recovery machine and operate in accordance with the
manufacturer,s instructions.
8) Do not overfill cylinders. (No more than 80% volume liquid charge).
9) Do not exceed the maximum working pressure of the cylinder, even
temporarily.
10) When the cylinders have been filled correctly and the process is
completed, make sure that the cylinders and the equipment are
removed from the site promptly and that all isolation valves on the
equipment are closed.
11) Recovered refrigerant shall not be charged into another refrigeration
system unless it has been cleaned and checked.
18. Labelling
Equipment shall be labelled stating that it has been decommissioned
and emptied of refrigerant. The label shall be dated and signed. Ensure
that there are labels on the equipment stating the equipment contains
flammable refrigerant.
19. Recovery
• When removing refrigerant from a system, either for service or
decommissioning, it is recommended good practice that all refriger-
ants are removed safely.
• When transferring refrigerant into cylinders, ensure that only appro-
priate refrigerant recovery cylinders are employed. Ensure that the
correct numbers of cylinders for holding the total 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 completed with
pressure relief valves and associated shut-off valves in good working
order.
Climate 5000 MS – 6720887246 (2018/04)
• 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
that 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 completed with leak-free disconnect couplings and
in good condition. Before using the recovery machine, check that
it is in satisfactory working order, has been properly maintained
and that any associated electrical components are sealed to prevent
ignition in the event of a refrigerant release. Consult manufacturer
if in doubt.
• The 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 units
and especially not in cylinders.
• If compressors or compressor oils are to be removed, ensure that
they have been evacuated to an acceptable level to make certain
that flammable refrigerant does not remain within the lubricant.
The evacuation process shall be carried out prior to returning the
compressor to the supplier. Only electric heating to the compres-
sor body shall be employed to accelerate this process. When oil is
drained from a system, it shall be carried out safely.
20. Transportation, labelling and storage for units
1. Transport of equipment containing flammable refrigerants
Compliance with the transport regulations
2. Labelling of equipment using signs Compliance with local
regulations
3. Disposal of equipment using flammable refrigerants Compliance
with national regulations
4. Storage of equipment/appliances
The storage of equipment should be in accordance with the
manufacturer's instructions.
5. Storage of packed (unsold) equipment
Storage package protection should be constructed such that
mechanical damage to the equipment inside the package will not
cause a leak of the refrigerant charge.
The maximum number of pieces of equipment permitted to be
stored together will be determined by local regulations.
Information on Servicing
23