Burkert Type 2037 - Manual (Page 29)

29
Maintenance,Cleaning
10.2 maintenance Work
10.2.1 actuator
The actuator of the diaphragm valve is maintenance-free provided it
is used according to these operating instructions.
10.2.2 Wearing parts of the diaphragm valve
Parts which are subject to natural wear:
• Seals
• Diaphragm
→
If leaks occur, replace the particular wearing parts with an appro-
priate spare part (see chapter “13 Spare parts”).
A bulging PTFE diaphragm may reduce the flow-rate.
10.2.3 inspection intervals
→
Check diaphragm for wear after maximum 10 5 switching cycles.
Muddy and abrasive media require correspondingly shorter
inspection intervals!
10.2.4 service life of the diaphragm
The service life of the diaphragm depends on the following factors:
• Diaphragm material,
• Medium,
• Medium pressure,
• Medium temperature,
• Actuator size,
• Control pressure for CFB and CFI.
protecting the diaphragm
→
For CFA match the actuator size (actuator force) to the medium
pressure to be actuated. If required, select the actuator with
reduced spring force EC04.
→
For CFB and CFI try and select the control pressure not higher
than is required to actuate the medium pressure.
10.2.5 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.
english
Type 2030, 2031, 2031 K, 2032,
2033, 2037