Draining and filling the refrigerant
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Draining and filling the refrigerant
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Warning
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Read through the following safety regulations before you start working on the A/C system.
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Wear protective glasses and impermeable gloves, since there is a risk of burn and frost injuries.
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If the skin comes into contact with the refrigerant, the exposed areas should be bathed in cold water and treated like a burn.
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Should the coolant get into the eyes, they must be rinsed thoroughly with water for at least 10 minutes.
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Refrigerant must not intentionally be released into the atmosphere. If, however, the refrigerant is unintentionally released in the premises, open and ventilate well before continuing work.
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Gases that are formed when heating a refrigerant are a health hazard and can have a serious effect on the lungs.
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Work should commence as soon as possible after emptying the A/C system as residual oil may emit refrigerant vapour that could collect and leak out if the work is delayed.
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Smoking and open flames must not occur when handling refrigerants.
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Refrigerant containers must not be exposed to heating, because the pressure will then increase resulting in the risk of explosion.
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For information on the actual equipment, please refer to the manual of the equipment in question.
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1.
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Remove the protective covers from the high and low-pressure pipes.
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2.
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Attach the blue hose to the low-pressure pipe. Connect the red hose to the high-pressure pipe.
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3.
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The quick couplings are designed as so-called Schrader valves. Connection is therefore done in two steps:
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Fit the quick coupling to the service connection.
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Turn the handle clockwise, so that the valve opens and the refrigerant can pass through the connection.
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4.
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Begin draining the system. Follow the instructions for the machine in question. Note the amount of compressor oil drained.
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5.
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Close the cocks and disconnect the machine.
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6.
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Fit the protective covers to the high and low-pressure pipes.
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1.
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Remove the protective covers from the high and low-pressure pipes.
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2.
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Attach the blue hose to the low-pressure pipe. Connect the red hose to the high-pressure pipe.
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3.
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The quick couplings are designed as so-called Schrader valves. Connection is therefore done in two steps:
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Fit the quick coupling to the service connection.
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Turn the handle clockwise, so that the valve opens and the refrigerant can pass through the connection.
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5.
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For fully automatic filling
: Fill with compressor oil and tracing agent as described in the machine's instructions.
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6.
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Begin filling the systems. Follow the instructions for the machine.
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7.
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Close the cocks and disconnect the machine.
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8.
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Fit the service valves on the high-pressure and low-pressure pipes.
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