BRONKHORST FLEXI-FLOW Compact Instruction Manual page 23

The status LED starts blinking blue (1 second on, 1 second off), indicating that the procedure is in progress. On completion,
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the status LED assumes the color of the current
If the procedure is successful, parameter Calibration Mode changes to 0 (idle). If the procedure fails, Calibration Mode changes to
255.
After zeroing, parameter Control Mode returns to its initial value. The output signal should be 0 % (parameter Measure = 0).
After performing the procedure, remember to set parameter Init Reset to value 82 to lock secured parameters.
3.3 Maintenance
Inexpertly servicing instruments can lead to serious personal injury and/or damage to the instrument or the system it
is used in. Servicing must therefore be performed by trained and qualified personnel. Contact your Bronkhorst
representative for information about cleaning and calibration. Bronkhorst has trained staff available.
The FLEXI-FLOW needs no regular maintenance if operated properly, with clean, non-corrosive media, compatible with the
wetted materials, avoiding pressure and thermal shocks and vibrations.
· Before disconnecting or disassembling any fluid system related parts, always make sure the fluid system is
depressurized to atmospheric pressure.
· When depressurizing, prevent sudden pressure changes by shutting off the fluid supply gradually.
3.3.1 Cleaning
Fluid path
· The instrument's fluid path (the wetted parts) may be purged with a clean, dry and inert gas.
In case of severe contamination, cleaning the wetted parts may be necessary. This requires the instrument to be returned to
·
the factory.
Exterior parts
Exterior parts can be cleaned with a soft, lint free cloth, preferably dry, or, if necessary, moistened with a mild water soluble
cleaning agent.
· Moisten the cloth only slightly, to prevent liquid penetrating the interior and causing damage to the electrical
parts.
· Only use a water soluble cleaning agent, never an oil based liquid like paint thinner or white spirit, as these might
damage parts made of synthetic materials.
3.3.2 Calibration
The FLEXI-FLOW has been factory calibrated. Periodical inspection, recalibration or verification of the accuracy may be subject
to individual requirements of the user. Whenever necessary, contact your Bronkhorst representative for information and/or
making arrangements for recalibration.
Bronkhorst certifies that the instrument meets the rated accuracy. Calibration has been performed using measurement
standards traceable to the Dutch Metrology Institute (VSL).
3.4 Troubleshooting
General problems
Electronic problems can be traced by restarting the equipment.
·
· If the equipment starts up normally, the measurement and control behavior can be checked by applying fluid pressure.
· To track down problems in the fluid system, depressurize the fluid system and disconnect the suspected unit from the
process line. Dirt or clogging might be quickly detected by visual inspection of disassembled fluid connections.
If you suspect leakage, do not disassemble the device for inspection, but contact your Bronkhorst representative for
service or repairs.
9.17.158G
Bronkhorst®
instrument status .
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Instruction Manual FLEXI-FLOW™ Compact 23