Burkert Type 2037 - Manual (Page 13)

13
Assembly
stainless steel insert (only for units without diaphragm and
casing):
A VA insert (order no. 648 864) is enclosed with a device which is
supplied without a diaphragm and body.
use of an epdm / Fkm diaphragm:
→
When installing a device with elas-
tomer diaphragm (EPDM / FKM),
insert the VA insert into the groove
of the pressure piece.
use of a ptFe - diaphragm:
→
When using a PTFE diaphragm,
the insert is not required.
insert
6.3.2 connection of the control medium
control function a:
→
Connect control medium to lower connection.
control function b:
→
Connect control medium to upper connection.
control function i:
→
Connect control medium to upper and lower connections
(see „Fig. 7: Control air connection“).
→
Pressure on the upper connection closes the valve.
→
Pressure on the lower connection opens the valve.
6.4 maintenance work
6.4.1 actuator
The actuator of the diaphragm valve is maintenance-free provided it is
used according to these operating instructions.
6.4.2 Wearing parts of the diaphragm valve
Parts which are subject to natural wear:
• Seals
• Diaphragm
→
If leaks occur, replace the particular wearing part with an appro-
priate spare part.
For the maintenance and repair instructions see operating
instructions (DN65 - DN100) on the Internet at:
www.burkert.com
A distended PTFE diaphragm may reduce the flow-rate.
6.4.3 inspection intervals
→
Check diaphragm for wear after a maximum 10 5 switching
operations.
Muddy and abrasive media require correspondingly shorter
inspection intervals!
english
Type 2030, 2031, 2031 K, 2032,
2033, 2037