Handleiding
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If a leak is suspected, all open fires should be removed from the site or
extinguished.
If welding is required in the location where the leak occurs, either all
refrigerant shall be recovered or isolated away from the leakage point
(using a stop valve). Clean the whole system with anaerobic nitrogen
(OFN) before and during the welding.
█ Remove and vacuum
Maintenance or other operations of the refrigeration circuit shall be
conducted according to the routine procedures. However, the safety of
the refrigerant should also be considered and follow the following
procedures:
● Remove the refrigerant;
● evacuation;
● Use the inert gas purification pipeline again;
● Cutting the line or performing welding;
The refrigerant shall be recovered into a suitable storage tank. The
process to ensure safety may be repeated several times. This work shall
not be performed using compressed air or oxygen.
The blowing process fills the anaerobic nitrogen into the system under the
vacuum state to reach the working pressure, and then, the anaerobic
nitrogen is discharged into the atmosphere, and finally the system is
pumped into a vacuum. Repeat this process until all the refrigerant is
removed from the system. After the last charge of anaerobic nitrogen, the
gas is discharged to the atmospheric pressure, and then the system can
be welded. If the pipeline welding operations, the above operation is very
necessary.
Ensure that there is no ignition source near the outlet of the vacuum
pump and that it is well ventilated.
█ Infusion of the refrigerant procedure
To complement the routine procedures, add the following requirements:
● Ensure that no mutual contamination between different refrigerants
occurs when using the refrigerant filling equipment. The refrigerant filling
line should be as short as possible to reduce the residual amount of
refrigerant inside it; the storage tank should be kept vertical upward;
● Ensure that the refrigeration system has taken grounding measures
before filling the refrigerant;
● Label the system after filling (or not yet);
● Attention must be paid to excessive injection;
● Pressure test with anaerobic ammonia before reinjection into the
system. After the filling is completed, the leakage test is conducted before
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Productinformatie
| Merk | Vevor |
| Model | POG |
| Categorie | Airco |
| Taal | Nederlands |
| Grootte | 17769 MB |
