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Create Dryplus XL-Spiral Manual De Instrucciones página 15

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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.
15.REFRIGERANT 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 refri-
gerant.
• 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 commissioning. A follow up leak test shall be
carried out prior to leaving the site.
16.DECOMMISSIONING
Before carrying out this procedure, it is essential that technician is completely familiar with
the equipment and all its detail. It is recommended good practice that all refrigerants are re-
covered safely. Prior to the task being carried out, an oil and refrigerant sample shall be taken
in case analysis is required prior to reuse 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 system electrically.
3. Before attempting the procedure ensure that:mechanical handling equipment is available,
if repaired, 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 refrigerant 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 cylinder is situated on the scales before recovery takes place.
7. Start the recovery machine and operate in accordance with 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 completed,make sure that
the cylinders and the equipment are removed from site promptly and all isolation valves on
the equipment are closed off.
11. Recovered refrigerant shall not be charged into another refrigeration system unless it has
been cleaned and checked.
15
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