Filling With Refrigerant - Dimplex La 4060Cp Montage- Und Betriebsanleitung

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Removal
1. Start drainage of the refrigerant on the service valve on the low pressure side.
2. After a few minutes, move the expansion valve to the open position using the permanent magnet.
3. Open the service valve on the high pressure side.
4. When drainage / extraction is complete, adequately flush the entire device with nitrogen.
5. Evacuate to an absolute pressure level of 20 mbar. Use vacuum pumps suitable for R290. The fan (Ex zone II) must
be positioned in such a way that the vacuum pump is in the air flow.
6. Break the vacuum with nitrogen.
7. If there is still refrigerant in the refrigeration circuit, repeat the "Evacuation" and "Flushing" work steps. Check all
service valves in the refrigeration circuit.
Repairs to the refrigeration circuit
• Always open the refrigeration circuit with a pipe cutter. Do not unsolder any components.
• During soldering work, flush the area with an adequate quantity of nitrogen.
• Replace the filter dryer whenever any repair work is performed on the open refrigeration circuit.
Components that have been removed can still release small quantities of refrigerant from compressor oil residue
(especially from the compressor itself).
• Do not seal or solder removed components.
• Store the components in the open air until the work is complete.
• Subsequent transportation must be in a ventilated vehicle.

10.1.2 Filling with refrigerant

Actions before filling
• Before filling with refrigerant, perform the following checks:
◦ Pressure test at solder connections that have been created
◦ Leakage tightness test
◦ Evacuate to an absolute pressure level of 2.7 mbar or lower
• The leak detector must be suitable for the type of refrigerant being used.
• Ensure that the refrigeration circuit is earthed.
• Do not use filling fittings for different refrigerants. Choose hoses that are as short as possible to minimise the
amount of refrigerant they contain.
• Evacuate the filling hose and the manifold as far as the connection point on the device before filling. If the manifold
and the filling hose are filled with propane, check them again for leaks.
Filling
• During filling, ensure that heating water is conveyed through the liquefier.
• Position the refrigerant bottles horizontally.
• Ventilate the refrigerant bottle and hoses externally with a fan (Ex zone II).
• Do not heat the refrigerant bottle with naked flames or a hair dryer. Possible methods of speeding up the filling
include a hot water bath or heating sleeves suitable for propane bottles.
• After filling, safely drain the remaining quantity of propane in the manifold and the hoses.
• Check for leaks again after filling using the refrigerant detector. If a leakage is indicated, repeat the process.
EN 34
•
452173.66.03c FD 0509
•
LA 4060CP
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