Burkert Type 8681 - Manual (Page 79)

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Maintenance, Troubleshooting
18.3. Maintenance
When used properly, the Control Head Type 8681 operates maintenance and trouble-free.
For service work, we offer spare part sets for certain components or modules (see chapter entitled " 20. Spare
Parts"). Repairs to the control head for use in explosive atmosphere, however, are only allowed by the
manufacturer.
If service function is active (see chapter 6.6. Factory Settings in the Firmware) a maintenance prompt is issued -
signaled by a "blinking pattern" in the fault color (1 s ON, 3 s OFF) - see chapter 16.2. Blinking Pattern & Fault
Signaling.
Cleaning 18.4.
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 carefully, its concentration may considerably exceed the concentration for
use once 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!
Malfunctions 18.5.
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 possible cause of the fault troubleshooting
No feedback signal Position of the position measuring
system (Teach-In) not appropriate
for the spindle position Perform or repeat the Teach-In process
(see chapter
15.1. Setting the Position
Measuring System (Teach-In))
Setting of the external initiators
incorrect Set the external initiator according to the
respective operating instructions.
No or faulty associated feedback
signals or external initiator Set the connections according to the
pin and plug configurations described
in these operating instructions (for the
respective voltage and communication
variant).
Target is not mounted on the
process valve's spindle or target
faulty Check the target for correct mounting
and condition (see chapter (
6.5. Position
Measuring System Data)).
english
Control Head Type 8681