Midea RSJ-15/190RDN7-L2 handleiding
Handleiding
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In addition to conventional charging procedures, the following requirements shall
be followed:
Ensure that contamination of dierent 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 in an appropriate position according to the instructions.
Ensure that the refrigerating system is earthed prior to charging the system with
refrigerant.
Label the system when charging is complete (if not already labelled).
Extreme care shall be taken not to overfill the refrigerating system.
Prior to recharging the system, it shall be pressure-tested with the appropriate
purging gas. 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.
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The refrigerant charge shall be recovered into the correct recovery cylinders. For
appliances containing flammable refrigerants other than A2L refrigerants, the
system shall be purged with oxygen-free nitrogen to render the appliance safe for
flammable refrigerants. This process may need to be repeated several times.
Compressed air or oxygen shall not be used for purging refrigerant systems.
For appliances containing flammable refrigerants, other than A2L refrigerants,
refrigerants purging shall be achieved by breaking the vacuum in the system with
oxygen-free nitrogen and continuing to fill until the working pressure is achieved,
then venting to atmosphere, and finally pulling down to a vacuum. This process
shall be repeated until no refrigerant is within the system. When the final oxygen-
free nitrogen 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 close to any potential ignition
sources and that ventilation is available.
NOTE: A2L refrigerants: Such as R32, R454B refrigerant.
15. Charging procedures
16. 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 requiredprior to re-use of
recovered 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.
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Productinformatie
| Merk | Midea |
| Model | RSJ-15/190RDN7-L2 |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 4550 MB |
