Bedienungsanleitung Inventor PR1VO32 Premium C (Seite 38 von 120) (Englisch)

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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 overll 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 lled 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 overll 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 nal 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.

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