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APPLIANCES FILLED WITH R 407 C
R 407 C
• Fluid R 407 C, as opposed to R22, is not a pure fluid but a blend composed of:
- 23% R 32 + 25% R 125 + 52% R 134 A.
• The compressors approved for operation with this fluid are filled beforehand with polyalcohol oil.
Contrary to mineral oil, it is very hygroscopic: it absorbs the humidity of the ambient air very quickly. This can modify
its lubricant properties and lead in time to the destruction of the compressor.
MAINTENANCE INSTRUCTIONS
1 - Never add oil to the appliance; the compressor is filled with polyalcohol oil, a special oil which cannot tolerate the
presence of other oils.
2 - The instruments used for:
- filling,
- pressure measurements,
- emptying under vacuum,
- recovering the fluid,
must be compatible and only used for the R 407 C fluid.
3 - The weight of the refrigerant contained in the storage bottle must be checked constantly. Do not use it from the
moment the remaining weight is less than 10% of the total weight.
4 - In the case of a new charge:
- do not use the charging cylinder,
- use a balance and a dip pipe type R 407 C cylinder,
- charge the weight of R 407 C as per the value indicated on the unit’s identification plate,
- IMPORTANT: see instruction 3 above.
5 - The charge must be undertaken in liquid phase.
6 -In case of leakage, do not complete the charge: recover the remaining refrigerant for recycling and perform
a total charge.
Recovery, recycling or the destruction of the fluid must be done in compliance with the laws in force in the country
concerned.
7 - If the refrigerant circuit is opened, you must:
- avoid the entry of air into the circuit as much as possible,
- replace the filter drier,
- perform the "vacuum operation" at a minimum level of 0.3 mbar (static).
MARKING
This product marked conforms to the essential requirements of the Directives :
- Low voltage no. 73/23 EEC, modified 93/68 EEC.
- Electromagnetic Compatibility no. 89/336 EEC, modified 92/31 and 93/68 EEC.
- Pressure Equipment Directive No. 97/23/CE.
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