8 troubleshooting, Troubleshooting – Bronkhorst BRIGHT (V2.00 and higher) User Manual
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8 | TROUBLESHOOTING
8 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 counter limit 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:
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:
Contact Bronkhorst High-Tech local sales representative or send e-mail describing your problem to:
9.17.048
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