Service Solution Manual

23
342000 Refrigerant Service Solution
HELP SCREENS
The following Help Screens appear on the 342000 for your convenience:
VACUUM
• Connect service hoses to vehicle and open coupler valves.
• The system must have less than 25 psi of pressure for correct operation
of the vacuum pump.
• If greater than 25 psi, you must recover the refrigerant before proceeding.
OIL FLUSH
• Recover any refrigerant in the vehicle.
• Remove and bypass the Orifice Tube or TXV.
• Install compressor bypass block and filter kit.
• Connect blue low side service hose to the filter, then open the service
coupler.
• Connect the filter to the compressor bypass block. Open the service coupler.
• Empty the oil drain bottle.
• Press the OIL FLUSH key on the 342000 to begin the process.
• Program increased vacuum and flushing time, or press the ENTER key to
accept default values.
• Install compressor and expansion devices.
• Evacuate; replenish lost oil; charge refrigerant.
• See Service Bulletins for specific vehicle instructions.
SNAPSHOT
• Install red (15 ft.) temperature probe into vehicle front air outlet duct.
• Install blue (30 ft.) temperature probe into vehicle rear air outlet duct (as
required).
• Install airflow probe into the front duct (optional).
• Start the vehicle and set A/C to MAX COOL.
• Press the PRINT key to capture and print, or reset MAX/MIN to update.
CHARGE
• The vehicle’s A/C system must be evacuated before charging.
• If the A/C system did not hold a vacuum, it may have a leak.
• If not evacuated, the charge amount is limited to .5 lb.
Operating Instructions