8
Contact
1
3
2
Operation
The valve is adjusted and tested before delivery.
The adjustment instructions on this page are only to
be used if further adjustment is required!
Study the instructions carefully.
Adjust with care.
NO = Normally open.
NC = Normally closed.
4. Adjustment in case of 20 mm stroke deviation
NOTE!
Maximum stroke is 21 mm.
1. Place a 20 mm block between the actuator piston
rod and the valve plug (2).
2. Adjust valve plug adjuster (7) to a position with a
distance of 0.5 mm + the 20 mm block between the
actuator piston rod and the valve plug (use a gauge
blade to determine the 0.5 mm).
3. Adjust with the zero-screw (counterclockwise) until
the actuator piston rod contacts the 20 mm block
and can be moved slightly. Turn the zero-screw 1/2
round (counterclockwise) to give preforce on the
valve plug.
CAUTION!
Do not touch the zero-screw.
1. Pull the spring lever gently down to release
the 20 mm block.
2. Remove the 20 mm block.
zero-screw
Entry 9
Entry 36
20.5 mm 20 mm
zero-screw
Spring lever
4
1. Set the highest signal (20 mA), + on the
terminal block 11 and - on the terminal block
12 (4mA for NC valve) (the actuator piston
rod contacts valve plug (2) and gives preforce).
2. Fit and tighten clamp fitting (9) to connect
the actuator piston rod with the valve plug.
3. Check that the stroke is 20 mm.
1. Release compressed air.
2. Remove clamp fitting (9).
3. Remove the terminal box cover.
4. Supply compressed air (4 bar) to entry 9.
5. Set the lowest signal (4mA), + on terminal
block 11 and - on terminal block 12 (20mA
for NC valve).
6. Adjust with the zero-screw (clockwise) to
ensure max. open position.
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