9 Commissioning
ARCA Regler GmbH
24 / 32
Series 812-DWK
03.2020 / 1.0
9
Commissioning
9.1
Adjustment
Stroke adjustment
▪
CAUTION!
Shear forces must not be transmitted to the actuator
stem (1) when coupling actuator and valve.
▪
CAUTION!
Do not turn the actuator stem (1) in a radial direction.
– The pins (2) must lie in the transverse axis of the yoke (34) as
shown in the sectional drawing.
▪
NOTICE!
Adjust the stroke so that the closing position of the valve is
not hindered by the internal, non-adjustable stroke limiter of the actu-
ator.
9.2
Actuating signal connection
Air quality
CAUTION!
Ensure correct air quality!
Oil-free, instrument-quality air with no water or dust, solid material con-
tent max. 1 mg/m³ (standard atmospheric conditions), max. particle size
0.1 mm, oil content max. 1 mg/m³ (standard atmospheric conditions),
pressurised dew point 20 K below the lowest ambient temperature.
When working on the compressed air system ensure that any contamin-
ation present such as water, oil, chips, soldering material residues, etc.
are expelled by blowing out.
Air connections
The actuator has air connections (Z...) with an internal thread.
Actuator size
Connection Z1
Connection Z2
Connection Z3
MFI
G ⅛
G ⅛
G ⅛ *
* G ½ alternatively also possible.
Z2
Z1
Z2
Z1
Z3
Z3
Illustration 7:
Air connections
