Bronkhorst®
Instruction Manual EL-FLOW® Prestige
9.17.084N
52
5
Troubleshooting and service
To track down problems in the fluid system, it is recommended to disconnect the unit from the process line and check it
without applying fluid pressure. Dirt or clogging might be detected quickly by loosening fluid connections and performing
a visual inspection.
Energizing and de-energizing the equipment can indicate whether there is an electronic failure. After energizing, control
behavior can be checked by applying fluid pressure.
If you suspect leakage, do not disassemble the device for inspection, but contact your Bronkhorst representative for service
or repairs.
5.1
Errors and warnings
See
for an explanation of the possible LED indications the instrument can give.
In case of problems during operation, error and warning information can be found in FlowDDE and FlowPlot. FlowDDE
puts all errors and warnings on the console screen; in FlowPlot, the
Alarm & Count
tab (
Instrument Settings
) provides
several specific alarm and counter indicators.
5.2
Restoring factory settings
In case changes to the instrument configuration leads to non-recoverable erroneous behavior, the instrument can be reset
to the pre-configured factory settings. This can be done with the following methods:
·
with the multifunctional switch (see
·
with the
restore
function of a Bronkhorst® readout and control unit (BRIGHT, E-8000)
·
via RS232 communication, with the
Restore settings
function in FlowPlot
To restore the factory settings using the multifunctional switch, follow these instructions:
1. Make sure electrical power to the instrument is switched off
2. Press and hold the multifunctional switch, while powering up the instrument. After 4 seconds ,the red LED
•
starts
flashing (0.2 seconds on, 0.2 seconds off)
3. At that moment (which is after 4 to 8 seconds), release the switch
Changes made to the network settings (bus address, baud rate, parity) will
not
be restored by a factory reset.
If digital communication with the instrument can not be re-established, see
9-pin D-sub communication settings with the configuration mode and use the RS232 communication mode to re-
establish communication.
