Maintenance / Service; Cleaning; Malfunctions - Burkert 8681 Operating Instructions Manual

19.3.

Maintenance / service

When used properly, the control head Type 8681 operates maintenance and trouble-free.
For service work, contact the Bürkert Sales Center (Chapter "4.1" on page 12).
If the service/maintenance notification function is active (see Chapter"6.7. Factory settings in the firmware"),
a maintenance prompt is issued - indicated by a "blinking pattern" in the fault color (1 s ON, 3 s OFF) - see
Chapter "17.2. Blinking pattern & fault signaling".
19.4.

Cleaning

NOTE!
Aggressive cleaning agents may damage the material!
• In the explosion-risk area, only wipe the control head with a damp or anti-static cloth to avoid electro-static
charges.
• The customary cleaning agents and foam cleaners can be used to clean the outside. We recommend
checking that the cleaning agents are compatible with the housing materials and seals before using the
cleaning agent.
→
Clean the control head and rinse it thoroughly with clean water to safeguard against the formation of deposits
in grooves and recesses.
If cleaning agent is not rinsed off properly, its concentration may considerably exceed the concentration for
use when the water has evaporated. The chemical effect will thus be several times stronger!
Observe the specifications of the manufacturer and the recommendations for use of the cleaning agent
manufacturer!
19.5.

Malfunctions

In the event of any malfunctions in spite of a correct installation, proceed according to the fault analysis described
in the table below:
Fault description
No feedback signal
88
Possible cause of the fault
Position of the position measuring
system (Teach-In) not appropriate
for the spindle position
Setting of the external initiators
incorrect
No or faulty associated feedback
signals or external initiator
Target is not mounted on the
process valve's spindle or target
faulty
English
Control Head Type 8681
Maintenance,troubleshooting
Troubleshooting
Perform / repeat the Teach-In procedure
(see Chapter 16.1. Setting the Position
Measuring System (Teach-In))
Set the external initiator according to the
respective operating instructions.
Set the connections according to the
pin and plug configurations described
in these operating instructions (for the
respective voltage and communication
variant).
Check the target for correct mounting
and condition (see Chapter 6.6. Position
measuring system data).