6.5.2 Connecting the power supply....................................................................................................73
6.5.3 Setting the supply pressure on the pressure regulator of the VN301plus central unit................74
6.5.4 Setting the sensor sensitivities on the VN301plus central unit....................................................76
6.5.5 Function test when starting up for the first time ........................................................................77
7Manufacturer settings.............................................................................................................80
7.1 Adjusting the parameters on the VISATRON®VN301plus central unit.......................................80
8Operation and use...................................................................................................................83
8.1 Check every time before operation ...........................................................................................83
8.2 Operation under correct conditions ...........................................................................................84
8.3 Switching the device on and off.................................................................................................84
8.4 Normal operation.......................................................................................................................84
8.5 LED check .................................................................................................................................85
8.6 Checking the supply pressure, sensor OMC and sensitivity.....................................................86
8.7 “Oil mist pre-alarm” status indicator ..........................................................................................87
8.8 “Oil mist alarm” status indicator.................................................................................................87
8.9 Confirming an oil mist alarm......................................................................................................89
9Maintenance and repair ..........................................................................................................92
9.1 Maintenance by the operator.....................................................................................................92
9.1.1 Maintenance cycles for reliable operation.................................................................................93
9.1.2 Cleaning the measuring track area on the sensor unit (4,000 hrs.)..........................................96
9.1.3 Replacing the air filter element on the pressure reducer unit (4,000 hrs.)..............................101
9.1.4 Function test of the sensor units using smoke tube (8,000 hrs.) ............................................104
9.2 Inspection of the oil mist detection system (16,000 hrs. or after 24 months)..........................107
9.3 Repair by the operator.............................................................................................................107
9.3.1 Replacing the VN301plus central unit .......................................................................................107
9.3.2 Replacing the VN301plus / VN301plus Ex sensor unit................................................................107
9.3.3 Replacing the hybrid cable......................................................................................................107
9.4 Repair by Schaller Automation................................................................................................108
9.5 Taking out of service and disassembly ...................................................................................108
9.6 Starting up for again................................................................................................................108
10 Error diagnosis and troubleshooting..................................................................................109
10.1 Behaviour of the oil mist detection system in the event of a fault ...........................................109
10.1.1Sensor defect ..........................................................................................................................110
10.2 Troubleshooting.......................................................................................................................111
11 Final shutdown and disposal...............................................................................................113
11.1 Disposal...................................................................................................................................113
11.2 Final shutdown ........................................................................................................................113
12 Contact ...................................................................................................................................114
