Beko BA 310 AC Manuel D'utilisation page 17

2 Warn ngs (for us ng R290 refr gerant only)
and s su table for the refr gerant used. Leak detect on equ pment
shall be set at a percentage of the LFL of the refr gerant and shall
be cal brated to the refr gerant employed and the appropr ate
percentage of gas (25 % max mum) s conf rmed. Leak detect on
flu ds are su table for use w th most refr gerants but the use of
detergents conta n ng chlor ne shall be avo ded as the chlor ne may
react w th the refr gerant and corrode the copper p pe-work. If a
leak s suspected, all naked flames shall be removed/ ext ngu shed.
If a leakage of refr gerant s found wh ch requ res braz ng, all of
the refr gerant shall be recovered from the system, or solated (by
means of shut off valves) n a part of the system remote from the
leak. Oxygen free n trogen (OFN) shall then be purged through the
system both before and dur ng the braz ng process.
12. Removal and evacuat on
When break ng nto the refr gerant c rcu t to make repa rs or for any
other purpose convent onal procedures shall be used. However, t
s mportant that best pract ce s followed s nce flammab l ty s a
cons derat on. The follow ng procedure shall be adhered to:
Remove refr gerant;
Purge the c rcu t w th nert gas;
Evacuate;
Purge aga n w th nert gas;
Open the c rcu t by cutt ng or braz ng.
The refr gerant charge shall be recovered nto the correct recovery
cyl nders. The system shall be flushed w th OFN to render the
Local air conditioner
17 / 224 EN