English
8/16
Doc nr.: 9.17.055
Troubleshooting
No output signal of instrument
•
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
®
local sales representative or send e-mail describing your problem to:
support@bronkhorst.com
