Burkert Type 6608 - Manual (Page 6)

20
NC NO in/out
NC OUT
Circuit function (CF)
A
C, D and T
B
OUT NO
Identification of the valve connections on the body:
NC Normally closed
Connection normally
closed, for CFA
NO Normally open
Connection normally open,
for CFB
IN/OUT
for pressure connection (distributor) or
working connection (mixer), for CFT
Normal output, for CFC or CFD
OUT Normal output, for CFA or CFB
* see also the description of the circuit functions in the chapter
entitled “ 7.4. Pneumatic data”
english 21
The valve body must not be twisted by the fastening
screws or by screwing in the connecting nipples too
far!
The bodies with threaded or hose connection have fixing
eyelets for the screw connection from above with M3 and from
below with self-tapping screws BZ 3.9 x ... DIN 7971.
Body with threaded connection:
Use PTFE tape as sealing material
→
Screw in the connecting thread (max. 3 Nm)
→
note!
Malfunction / damage to device when detaching the
coil!
The valve features a pressed-in membrane which may be
damaged when the coil is detached.
Do not loosen the coil! •
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Valve with flange connection:
To ensure functional reliability, operate the valve with
the coil installed ex works only!
Flange plate
Body
Coil
Screw for attaching coil
Loosen the screw which attach the coil and remove the
→
coil from the body.
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Warning!
Danger - escaping medium!
Leaking connections if seals not seated properly, if manifold
uneven or if surface quality of the manifold inadequate.
Make certain the seals included with delivery are •
properly seated in the valve.
Ensure that the manifold is even.
•
Ensure that the surface quality of the manifold is •
adequate.
Seal
Screws for manifold
Tightening torque:
0,8 Nm
Manifold
Flange connection
with screws Flange connection
with clamps
Insert the seal into the valve.
→
english 23
Type 6128, 6608