Bronkhorst BRIGHT - Manual (Page 8)

English 8/16
Troubleshooting
No output signal • No power supply Check power supply
• PCB failure Check cable
Return to factory
• Valve blocked Clean valve (qualified personnel only)
• Filter or screen blocked Clean filter or screen
• Sensor failure Return instrument to factory
Maximum output signal • PCB failure Return instrument to factory
• Sensor failure Return instrument to factory
High setpoint vs. output offset • PCB failure Return instrument to factory
• Valve blocked Clean valve (qualified personnel only)
• Stoppage Remove cause
• Pressure not correct Check pressure
Signal lower than expected • System stoppage Remove cause
Flow is gradually decreasing • (Gas) Condensation Decrease supply pressure or increase
temperature
• Valve adjustment has changed Check valve adjustment
• Controller adjustment wrong Check controller setting
Oscillation • Input pressure wrong Adjust pressure
• Valve damaged Check valve
• Volume / tubing between
controller and pressure
controller too small/ short
Improve situation
• Wrong controller settings Check controller settings
Small flow occurs when valve is
supposed to be closed
• Valve is leaking Check valve
Parameter not available • Parameter is not supported by
the connected instrument.
Setpoint is neglected • Instrument has wrong controller
mode
Set controller mode to ‘digital input’
• Alarm- or counterlimit reached Reset alarm
Settings menu not accessible • Security mode ‘blocked’ or
‘menu’
Change security mode
!
Before switching on power, check if all connections have been made according to the hook-up diagram. The hook-
up diagrams are available at the download section of our website: http://www.bronkhorst.com
LED indications can be very useful in case of problems with the instrument. See the “MANUAL INTERFACE: micro-
switch and LED’s” section in the manual “Operation instructions digital instruments (document nr. 9.17.023)”.
This manual is available at the download section of our website: http://www.bronkhorst.com
Contact Bronkhorst High-Tech local sales representative or send e-mail describing your problem to:
[email protected]
Doc nr.: 9.17.049