6.10 Setting temperature limits Tih and Til....................................................................................................................... 89
6.11 Basic settings.............................................................................................................................................................. 90
6.12 Calibrating the temperature probe........................................................................................................................... 93
6.13 Restore the factory setting........................................................................................................................................ 95
6.14 Viewing the device status........................................................................................................................................... 96
6.15 Through-flow control of the internal heater............................................................................................................ 98
6.16 Programmer................................................................................................................................................................. 99
6.16.1 Basic information..................................................................................................................................... 99
6.16.2 Set and process program....................................................................................................................... 103
6.17 Set time, date, format and time zone..................................................................................................................... 105
6.18 Operator and Viewer................................................................................................................................................ 106
6.19 Web server................................................................................................................................................................. 109
6.20 Safe Mode safety state............................................................................................................................................... 111
6.21 Exporting data............................................................................................................................................................. 115
7 Operating a device with pressure overlay......................................................................................................................... 118
7.1 Warnings, safety instructions and further information.......................................................................................... 118
7.2 Menu structure of the pressure overlay................................................................................................................... 119
7.3 The system pressure in devices with pressure overlay............................................................................................ 121
7.4 Setting the parameters for a pressure-stable application up to the maximum system pressure...................... 121
7.5 Setting the parameters for a pressure-stable application...................................................................................... 121
7.6 Operating the device with pressure overlay........................................................................................................... 123
8 Maintenance....................................................................................................................................................................... 127
8.1 Warning notes for maintenance............................................................................................................................... 127
8.2 Maintenance intervals............................................................................................................................................... 127
8.3 Cleaning the device................................................................................................................................................... 128
8.4 Draining heat transfer liquid..................................................................................................................................... 128
8.5 Cleaning the air-cooled condenser......................................................................................................................... 129
8.6 Cleaning cooling water circuit................................................................................................................................. 130
8.7 Checking the overtemperature protection............................................................................................................. 131
8.8 Checking the low-level protection.......................................................................................................................... 132
8.9 Check the heat transfer liquid.................................................................................................................................. 133
9 Faults.................................................................................................................................................................................. 134
9.1 Alarms, errors and warnings..................................................................................................................................... 134
9.2 Alarms......................................................................................................................................................................... 134
9.3 Troubleshooting......................................................................................................................................................... 136
10 Decommissioning.............................................................................................................................................................. 138
10.1 Information on decommissioning............................................................................................................................ 138
10.2 Drain and clean the device....................................................................................................................................... 138
10.3 Draining the cooling water circuit........................................................................................................................... 140
V3REV38 Integral process thermostats 5 / 170