Bedienungsanleitung Inventor P9VO32 Passion Eco (Seite 39 von 156) (Deutsch, Englisch)

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 Page 38 

17. 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) Isolate system electrically

c) Before attempting the procedure ensure that:

mechanical handling equipment is available, if required, for handling refrigerant cylinders;

all personal protetive 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 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.

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 instructions.

h) Do not overfill cylinders. (No more than 80% volume liquid charge).

i) Do not exceed the maximum working pressure 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 removed from site promptly and all isolation valves

on the equipment are closed off.

k) Recovered refrigerant shall not be charged into another refrigeration system unless it has

been cleaned and checked.

16. 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 minimize 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.

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 closed to any ignition sources and there

is ventilation available.

 Page 39 

1. Transport of equipment containing flammable refrigerants

Compliance with the transport regulations

2. Marking 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.

20. Transportation, marking and storage for units

18. Labelling

Equipment shall be labelled stating that it has been de-commissioned 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 refrigerants are removed safely.

When tranferring refrigerant into cylinders, ensure that only appropriate 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 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 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 complete 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 retruning

the compressor to the suppliers. Only electric heating to the compressor body shall be

employed to accelerate this process. When oil is drained from a system, it shall be carried

out safely.

Inventor P9VO32 Passion Eco Seite 39

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