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Note
Outflowing processing medium must not penetrate into the semi-rotary drive.
The housing of the semi-rotary drive possesses a leakage groove on the connec-
tion side for the processing valve. If the processing valve leaks, the leakage can
flow through the open groove.
• Make sure that this leakage groove is not sealed. In this way you can be sure
that neither processing medium nor escaping air from the processing valve
can penetrate into the semi-rotary drive.
The DAPS semi-rotary drive can be fitted with or without a mounting adapter.
If there are high medium temperatures in the tubing and in the processing valve:
• Use a mounting adapter and also a heat-insulated coupling extension.
6.1 Fitting mechanical components
• In order to fit the DAPS semi-rotary drive, set the
switching shaft of the processing valve so that the
desired working method for opening and closing
the processing valve is implemented.
• Note that a processing valve with butterfly valve
can only be opened in one direction and closed in
the opposite direction.
Fitting the semi-rotary drive without a mounting
adapter:
1. Place the semi-rotary drive on the switching shaft
of the processing valve. Make sure here that the
square of the processing valve sits in the star-
shaped coupling of the semi-rotary drive without
being tilted.
2. Fasten the semi-rotary drive with 4 corrosion-
resistant screws and spring rings (material: VA)
to the connecting flange of the processing valve.
3. Tighten all the screws in diagonally opposite sequence.
Tightening torque
Fig. 3.
4. Continued
Point 6.
DAPS
F03 F04 F05 F07 F10 F12 F14 F16 F25
Tightening torque
[Nm]
2.5
Fig. 3
To fit the semi-rotary drive with a mounting adapter
you will need:
– a mounting adapter 9,
– a shaft extension aJ.
1. Align the mounting adapter so that its steps face
the direction of the longitudinal axis of the semi-
rotary drive and, if applicable, the open side of the
mounting bridge must face the processing valve.
2. Fasten the mounting adapter on the semi-rotary
drive. Do not yet tighten the screws.
3. Pass the shaft extension through the mounting
adapter into the star-shaped coupling on the
bottom of the semi-rotary drive. Make sure that
the shaft extension sits in the coupling without
being tilted.
4. Fasten the semi-rotary drive with mounting adapter and shaft extension to the
connecting flange of the processing valve. Make sure here that the square of
the processing valve sits in the shaft extension without being tilted.
5. Tighten all the screws in diagonally opposite sequence.
Tightening torque
Fig. 5.
DAPS
F03 F04 F05 F07 F10 F12 F14 F16 F25
Tightening torque
[Nm]
2.5
Fig. 5
After fitting the semi-rotary drive:
6. Check that the semi-rotary drive turns in the required direction of rotation and
whether the processing valve assumes the required position.
7. If the semi-rotary drive does not turn in the required direction of rotation:
Carry out the following conversion:
Fig. 2
Fig. 2
2.5
2.5
4
10
12
12
Fig. 4
2.5
2.5
4
10
12
12
Double-acting drives
1. Remove the pneumatic solenoid valve.
2. Turn the solenoid valve 180°.
3. Note the position of the threaded pin for
orientating a NAMUR valve.
4. Fasten the solenoid valve again.
6.2 Fitting pneumatic components
Connections for the compressed air supply
• DAPS semi-rotary drive, double-acting – standard design
– Air supply at connection 2 (A) – see Fig. 1 2
Rotational movement of the shaft in an anti-clockwise direction.
– Air supply at connection 4 (B) – see Fig. 1 4
Rotational movement of the shaft in a clockwise direction.
• DAPS semi-rotary drive, single-acting with spring return – standard design
– Air supply at connection 2 (A): Rotational movement in an anti-clockwise
direction.
– Spring return: Clockwise rotation
Note
• Fasten a filter element to exhaust port 4 (B) of the single-acting semi-rotary
drive type DAPS.
In this way no dirt particles can enter the product.
6.3 Fitting electric components
Using the pneumatic switching valves
• Please note the instructions and explanations in the relevant operating instruc-
tions for the pneumatic valves.
7
Commissioning
Note
• Make sure that the operating conditions
ted ranges.
The product is ready for operation as soon as it is fitted and electrically and pneu-
matically connected.
• Make sure that a processing valve fitted to the semi-rotary drive can be
15
12
switched without hindrance.
• Slowly pressurise the semi-rotary drive.
For slow start-up pressurisation use soft-start valve type HEL.
• Adjust the piston stops of the semi-rotary drive.
This setting serves for optimising the opening or
closing reaction of the connected processing valves.
– On the double-acting semi-rotary drive only the
9
9
end position can be adjusted by pressurisation via
connection 2 (A).
aJ
– On the single-acting semi-rotary drive only the end
position can be adjusted by spring return.
1. Loosen the lock nuts on both sides of the DAPS.
On both sides there appears a threaded rod for setting the piston stop.
2. Turn the threaded rods with an Allen key until the processing valve opens or
closes correctly.
3. Screw the lock nuts onto the threaded rods again and tighten them. Tightening
torque: 5 Nm.
8
Care and maintenance
If used as designated in the operating instructions, the device will be free of main-
tenance.
9
Dismantling
Warning
Never try to dismantle a semi-rotary drive under pressure.
• Switch the pneumatic circuit pressureless.
15
12
Warning
• Switch the tubing system pressureless before dismantling.
1. If necessary, remove any existing limit switches.
2. Remove the pneumatic switching valve.
3. Loosen the screws on the flange of the processing valve.
4. Remove the semi-rotary drive (if necessary including mounting adapter and
coupling extension) from the processing valve.
Single-acting drives
1. Remove the screws on the drive side.
2. Turn the drive 90° while it is still connected
via the shaft extension or directly with the
processing valve.
3. Tighten the retaining screws.
chapter 11 lie within the permit-
Fig. 6
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