Bronkhorst®
Instruction Manual MI Series Industrial mini CORI-FLOW™
9.17.120A
47
6
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 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.
6.1
Errors and warnings
See
for an explanation of all possible LED indications.
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; FlowPlot provides several alarm and counter indicators. See also section
.
6.2
Replacing fuses
Refer to the images in section
to see the location of the fuses on the wiring terminal box under the
instrument cover.
Fuses may only be replaced by qualified service personnel.
When replacing fuses, observe the following:
1. Before replacing a fuse, switch off the equipment and disconnect it from the electrical power source
2. Before replacing a fuse, determine the cause of the blow and solve it if necessary
3. Always replace fuses with the same type (current, speed, dimensions)
4. Contact your Bronkhorst representative if replacement fuses keep blowing
6.3
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:
·
via RS232 communication, with the
Restore settings
function in FlowPlot
·
with the multifunctional switch (see
·
with the
restore
function of a Bronkhorst® readout and control unit (BRIGHT, E-8000)
Changes made to the network settings (bus address, baud rate, parity) will
not
be restored by a factory reset.
6.3.1
Manual procedure
The instrument cover may only be opened in a dry and non hazardous environment. Before opening the cover, make sure
that the operating environment is perfectly safe and that the electrical components cannot be affected by moisture or
aggressive atmospheric components.
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