Instruction Manual
english
16
Installation
Before installation, clean any possible dirt off the pipe-
→
lines and flange connections.
If required, install a dirt trap to prevent malfunctions.
→
Mesh size: 5 µm
Observe the direction of flow of the valve.
Operating principle*
A / I
T
B
* seealsothedescriptionoftheoperatingprinciplesinthechap-
terentitled"PneumaticData"
english
17
Identification of the valve connections on the housing:
NO Normally Open Connection normally open
for WWB
NC Normally Closed Connection normally closed,
for WWA or I
IN/OUT for pressure connection (distributor) or
work connection (mixer), for WWT
The valve housing must not be twisted by the fasten-
ing screws or by screwing in the connecting nipples
too far!
The housings 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.
Housing with threaded connection:
Use PTFE tape as sealing material
→
Screw in the connecting thread by hand only →
Housing with hose connection:
Use flexible silicone or FKM hose with 1.6-2 mm inner
→
diameter
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18
Valve with flanged connection:
Remove the locking plate (coloured orange).
→
Do not remove the flanged plate!
Warning!
Danger – escaping medium!
Leaking connections if seals not seated properly, if connec-
tion plate uneven or if surface quality of the connection plate
inadequate.
Make certain the seals included with delivery are prop-•
erly seated in the valve.
Ensure that the connection plate is even.•
Ensure that the surface quality of the connection plate is •
adequate.
Insert the seal into the valve.
→
Caution!
If the tightening torque is too great, the device may
be damaged!
Observe the max. tightening torque of the screws. •
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19
Screw in screws to
0.3 ± 0.05 Nm
Caution:
Do not remove
flanged plate !
Attach valve to the connection plate. →
Dimensional drawing for connection plate:
NO
IN/OUT
NC
M2.5
min 8.5 deep
max. ø2
18
21.5
10.5
Arrangement of the bores:
3-way 2-way DF 2-way PEEK
Type 0127