Burkert Type 2002 - Manual (Page 25)

25
Maintenance,Troubleshooting
Warning!
for control function i – danger if control pressure fails!
For control function I control and resetting occur pneumatically. If
the pressure fails, no defined position is reached.
• To ensure a controlled restart, first pressurize the device with
control pressure, then switch on the medium.
11.2. Maintenance Work
actuator:
The actuator is maintenance-free provided it is used according to these
operating instructions.
Wearing parts of the angle seat valve / 3/2-way globe valve:
• Seals
• Swivel plate
→
If leaks occur, replace the particular wearing parts with an appro-
priate spare part (see Chapter “12. Spare parts”).
11.2.1. recommended maintenance
intervals
The valve should be visually inspected once a year. Shorter mainte-
nance intervals are recommended depending on application condi-
tions. The visual inspection includes the pneumatic connections and
the medium connections as well as the deaeration bore in the pipe.
11.2.2. cleaning
Commercially available cleaning agents can be used to clean the
outside.
note!
avoid causing damage with cleaning agents!
• Before cleaning, check that the cleaning agents are compatible
with the body materials and seals.
Follow instructions for use in the Ex area! See chapter “3.1”.
11.3. Malfunctions
malfunction remedial action
Actuator
does not
switch Control air connection interchanged 3)
CFA: Connect lower control air connection
CFB: Connect upper control air connection
CFI: Lower control air connection: Open
Upper control air connection: Close
Control pressure too low
→
See pressure specifications on the type label
Medium pressure too high
→
See pressure specifications on the type label
Direction of flow interchanged
→
See direction or arrow on the type label
english
Type 2000/2002