7.9 – REFILLING INSTRUCTIONS The system is empty when there is no more liquid in the reserve and gas reaches the thermostatic valve as wellas liquid (this produces a louder noise than the thermostatic valve). Before refilling the system, find and remove the leak. Two situations may occur: A) When the system is empty, the symptoms in Chapter 7.5 will present themselves. You will need to add coolant until it reaches normal levels. B) The system is empty due to a broken tube or coupling, thus causing the leak of the coolant and some oil. In this case, avoid operating the system and, as a precaution, try to isolate the broken component from the rest of the system, unscrewing the couplings that link it to the other components (4.5 rotations). After replacing it, you will need to check the level of oil in the compressor (Chapter 7.13) before refilling the system.

PFR134aAB E

7.10 – COMPRESSOR COOLANT OIL Before refilling, it is indispensable to replace the dehydrator filter (see 7.8), not only because the old filter isworn out, but because every refill brings a percentage of humidity coolant according to the quality of the freon. Small capacity cylinders (0.5-1kg) sealed and non are preferable. The condenser unit comes with two low pressure (aspiration) and high pressure (liquid) service valves. It is necessary to have an R134A container equipped with a tap and a flexible tube with a ¼ SAE revolving coupling with suction pump for the SCHRADER valve. Unscrew the ¼ SAE hood that sailboat covers the suction union valve (SUCTION) of the compressor. Connect the end of the flexible tube to the coupling equipped with suction pump to the compressor coupling. Briefly leak the tubing from the cylinder tap.Connect a high pressure manometer to the other compressor coupling (min. 15 Bar) using a flexible tubeequipped with a suction pump for SCHRADER valve.WARNING: If you have to look for coolant leaks, do not let off R134A gas and avoid polluting the environmentbefore identifying the leak (see 7.5). To refill, operate the compressor and open the tap of the cylinder so the compressor can suction the R134A gas from the cylinder. Some cylinders are equipped with plummets. Find out what kind of cylinder you are using to ensure that the compressor does not aspirate liquid. As the R134A cylinder’s temperature will fall due to the gas suctioned by the compressor, we recommend that you submerge the cylinder in a bucket of water at ambient temperature. You can determine how much coolant has entered from the weight of the cylinder. The maximum load of the system is 1kg. Any addition must be made using our spare part A50705. In any case, use oil that is the same as orcompatible with EMKARATE RL 22H from ICI.

Return to index APPENDIX: ELECTRIC AND CONFIGURATION DIAGRAMS

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