Manual

31
Maintenance and troubleshooting
Type 8011
Warning
Risk of injury due to non-conforming maintenance.
• Maintenance must only be carried out by qualified and skilled
staff with the appropriate tools.
• Ensure that the restart of the installation is controlled after any
interventions.
9.2. Cleaning
Depending on the nature of the fluid, regularly check for clogging of
the paddle-wheel.
note
The device may be damaged by the cleaning liquid.
• Clean the device with a cloth slightly dampened with water or a
cleaning liquid compatible with the materials the device is made of.
9.3. If you encounter problems
Problem Recommended action see chap.
The device does not
function
• Check the wiring
• Check that the device is
energized
7.4
The pulse output
does not work
Check whether the wiring is
suitable for the output type,
NPN or PNP
7.4
The flow rate meas-
urement is incorrect
Recalculate and change the
setting of the K factor
6.3.5
9.4. Replacing the seal
O-ring for metal fitting
O-ring for plastic fitting
Fig. 14: Exploded view of the 8011
→ Unscrew the 4 screws in the electronic module and remove it
from the fitting.
→ Remove the used seal.
→ Clean the surfaces on which the seal is placed.
→ Insert the new seal (see Fig. 14).
→ Position the electronic module on the fitting so that the arrow
points in the fluid direction on versions with optical sensor.
→ Insert the 4 screws into the electronic module (use the long
screws for a plastic S012, DN6 or DN8 fitting).
→ Tighten the 4 screws in an alternating pattern, to a torque of
1.5 Nm.
English