Servicing Station, Connecting For Measuring And Testing
- Work procedure may vary depending on the type of tools selected (the tool-specific operating instructions should therefore be followed).
The work procedure is always to be performed as described in the operating instructions for the A/C service station ROB 134APF (or subsequent models).
The charging hoses are to be connected as follows to prevent the entry of air or moisture into the refrigerant circuit:
-- Switch off the ignition.
-- Connect service station to power supply.
-- Connect quick-release coupling adapter to charging hoses of service station (handwheels not screwed in/hand shut-off valve not open).
-- Switch on service station and evacuate charging hoses (only necessary if there is air in charging hoses).
-- Switch off service station.
-- Remove sealing caps from service connections or connections with valve (see vehicle-specific refrigerant circuit).
Refer to [For engine(s) BLV, CCTA, CBFA] Removal and Installation .
Connect filler hose with quick-release couplings to refrigerant circuit service connections.
Never open valves on low or high-pressure side with engine running. Otherwise, the compressor or service station could be destroyed by a short circuit between the high and low-pressure sides of the refrigerant circuit if the A/C system is switched on.
-- Only tighten the handwheel in the quick-release coupling just enough so the service connection is open. Watch the pressure gauge and do not place too much pressure on the valve.
-- Start the engine and perform the planned tests and measurements.
-- Compare values determined to specified measured values. Refer to TEST PREREQUISITES .
-- Loosen the handwheel to close the quick-release coupling before disconnecting it.