Service - BRONKHORST ES-FLOW 1 C Series Instruction Manual

Symptom
Measured value or output signal
indicates flow, while there should
be none
Continuous maximum measured
value or output signal
Fluid system leakage
8.2

Service

If you have questions about a product or if you find the product does not meet the specifications
as ordered, do not hesitate to contact your Bronkhorst representative. To enable us to help you
quickly and effectively, make sure to have the serial number ready whenever seeking contact
with your Bronkhorst representative about a specific item. The serial number (SN; first line on the
serial number label) is the key to the original purchase order and can be found on the product.

For current information about Bronkhorst® and service addresses, please visit our website:
www.bronkhorst.com
Do you have any questions about our products? Our Sales Department will gladly assist you selecting the right product for

your application. Contact sales by e-mail:
sales@bronkhorst.com

For after-sales questions, our Customer Service Department is available with help and guidance. To contact CSD by e-mail:
aftersales@bronkhorst.com
No matter the time zone, our experts within the Support Group are available to answer your request immediately or ensure

appropriate further action. Our experts can be reached at:
+31 859 02 18 66
Bronkhorst High-Tech B.V.
Nijverheidsstraat 1A
NL-7261 AK Ruurlo
The Netherlands
9.17.153A
Bronkhorst®
Possible cause
Fluid system leakage
Mounting orientation and/or
process conditions changed
significantly
Zero point adjustment performed
incorrectly
Inlet pressure too high
Valve fully open
Sensor failure
Bad connection between parts (e.g.
ferrules, nuts, tubing, piping,
valves)
Instruction Manual ES-FLOW™ 1xxC
Corrective action
· Check fluid system for leakage
· Follow mounting instructions when
installing third party components (e.g.
adapters, tubing, valves)
· Install instrument according to
recommendations
Use instrument in conditions it was designed
·
for
· Adjust zero point
Readjust zero point, following instructions in
Adjusting zero point
Check inlet pressure
Close valve
·
· In case of normally open valve: check if valve
is in safe state; resolve cause if necessary (see
Default valve state)
Contact your Bronkhorst representative
Follow mounting instructions issued by third
party components (e.g. adapters, tubing, valves)
mounting
39