| Replace components of the refrigerant circuit |
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| All the components of the refrigerant circuit, which are sent in for quality monitoring, must always be closed (use original screw caps of the original part). |
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| The original parts (AC compressor, catch pan, evaporator, condensor) were previously filled with nitrogen gas. This filling of nitrogen gas escapes uniformly, more specifically, the pressure of the nitrogen filling is now so low that when opening for the first time, it is no longer noticable that gas escapes. |
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| On vehicles with an AC compressor without magnetic coupling, the engine must only be started if the refrigerant circuit is correctly assembled, see → Chapter. |
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| So that the AC compressor with the regulating valve for compressor of air conditioning system -N280- suffers no damage when the refrigerant circuit is empty, it is fitted with a secured oil supply. This means that approx. 40 to 50 cm3 of refrigerant oil remains in the AC compressor. |
| Two refrigerant circuit systems are installed: |
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| Refrigerant circuit with throttle and catch pan with integrated dessicator (Superb l) |
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| Refrigerant circuit with expansion valve and fluid reservoir with installed dessicator (all types except Superb l) |
| The catch pan / fluid reservoir / dessicator must not be replaced under the following conditions: |
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| After an accident, but without any visible damage to the catch pan / fluid reservoir, and if the refrigerant circuit was not opened. |
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| The repair (replacement of defective components) is performed for a short period and no humidity has penetrated (during the repair the components were immediately closed with screw caps after separating them in order to avoid any humidity from penetrating). |
| The catch pan / fluid reservoir / dessicator must be replaced under the following conditions: |
Note | t
| The new generation of fluid reservoirs is directly installed on the condensor and is therefore inseparably connected to it. |
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| The refrigerant circuit has been opened as of an undetermined time (creeping leakage). |
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| The repair extends beyond the normal repair time and humidity has penetrated. |
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| The refrigerant circuit was blown through with compressed air and nitrogen or was flushed with refrigerant R134a. |
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| The AC compressor has blocked (inner damage). |
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| The catch pan / fluid reservoir is damaged (accident). |
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