| Repairing refrigerant circuit |
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| The refrigerant in the refrigerant circuit must never be topped up (drain, evacuate and refill circuit). |
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| The compressor is always driven when the engine is running; there is no magnetic clutch. Therefore, the engine is not to be started unless the refrigerant circuit has been properly assembled. If, for example, the refrigerant pipes are not connected to the compressor, the compressor may become so hot when the engine is running that it is destroyed (by internal heating). The internal heating is caused by the compressor operating even at almost 0 % delivery rate against a fixed resistance (sealed circuit). |
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| To stop the compressor being destroyed when the refrigerant circuit is empty, it is designed such that delivery is reduced to roughly 0 % and lubrication is maintained by way of an internal oil circuit with the oil left in the compressor. |
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| The specified diameters for the O-ring seals and the tightening torques also apply to the screwed connections in the refrigerant pipes or hoses between the individual components. |
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