22
8024019/AE00/V1-0/2019-02| SICK
A D D E N D U M T O O P E R A T I N G I N S T R U C T I O N S | FWE200DH
Subject to change without notice
4
MAINTENANCE
4.3
Leak test of the water circuit
Leak tightness must be checked regularly because leaks in the area of the solenoid valves
influence measuring accuracy.
For this purpose, leak tightness must be checked with a visual inspection during weekly
maintenance. Check the pipework for traces of escaping water.
Leak tightness of the solenoid valves must be checked during half-yearly maintenance.
Proceed as follows:
1
Set the FWE200DH to “Maintenance” mode
(see FWE200DH Operating Instructions).
2
Login as “Authorized Operator”
(see FWE200DH Operating Instructions).
3
Close solenoid valves (
see “SOPAS ET-Menu Diagnosis/Probe purge”, page 22
). Start
manual operation (open/close valves manually).
4
Remove solenoid valve hoses directly from the plug connector.
5
Check whether water escapes at the solenoid valves.
6
Reset “Maintenance” mode. Put the measuring system back into operation.
Fig. 20: SOPAS ET-Menu Diagnosis/Probe purge
