Single-acting quarter turn actuator
1. Switch off the compressed air supply.
è
Springs slacken and move the piston to the end stop of the hydraulic
cylinder.
2. Remove the exhaust port.
3. Check the oil level in the reservoir.
4. Remove the transport stopper from the top of the lower cylinder flange.
5. Put the hydraulic bypass valve in the open position (OPEN).
6. The pump lever moves until oil emerges from the connecting sleeve of the
cylinder flange.
The oil level must not drop below the feed tube.
7. Insert the provided exhaust stopper into the lower cylinder flange.
8. Actuate the pump lever until the piston extends completely.
è
The spring is compressed.
9. To vent the hydraulic line, keep the pressure on the spring constant for
3–5minutes.
10. Slowly rotate the multiple way valve anti-clockwise (OPEN) until the spring is
completely slackened.
11. Check the oil level in the reservoir.
12. If the oil level is not correct, repeat steps 8–11.
13. Reinsert the exhaust port.
6.2 Adjusting the end positions
The end position is adjusted using the screw in the end flange of the hydraulic
cylinder.
Depending on the mounting position of the hydraulic device, the following chapter
describes the adjustment of the end position for either the “Valve open” position
or the “Valve closed” position.
– For information on the adjustment of the end position for the opposite valve
position
è
operating instructions for DFPD-HD-...
Double-acting quarter turn actuator
1
2
3
4
5
6
7
Fig. 4
1. Put the hydraulic bypass valve
1
in the open position (OPEN).
2. Pressurise the port (2) until the hydraulic piston
2
(internal, not visible)
reaches the stop adjusting screw
7
.
3. Switch off the compressed air supply.
4. Remove the cover of the stop bolt
5
and sealing disc
6
.
5. Loosen the stop nut
4
together with the sealing disc
3
.
6. To reduce the rotation angle, screw in the stop adjusting screw
7
.
To increase the rotation angle, unscrew the stop adjusting screw
7
.
7. Tighten the stop nut
4
. Make sure that the sealing disc
3
is centred on the
stop adjusting screw
7
and lies in the recess of the end flange of the housing.
8. Switch on the compressed air supply.
9. To check the adjustment, run through a complete cycle.
10.Put the cover of the stop bolt
5
and sealing disc
6
into place again.
Single-acting quarter turn actuator
5
4
3
2
1
6
Fig. 5
1. Put the hydraulic bypass valve
1
in the open position (OPEN).
2. To relieve the load from the stop adjusting screw
6
, pressurise the port (2).
3. Remove the cover of the stop bolt
4
and sealing disc
5
.
4. Loosen the stop nut
3
together with the sealing disc
2
.
5. To reduce the rotation angle, screw in the stop adjusting screw
6
.
To increase the rotation angle, unscrew the stop adjusting screw
6
.
6. Tighten the stop nut
3
. Make sure that the sealing disc
2
is centred on the
stop adjusting screw
6
and lies in the recess of the flange.
7. To check the adjustments, run through a complete cycle.
8. Put the cover of the stop bolt
4
and sealing disc
5
into place again.
7
Operation
Comply with operating conditions.
Observe the permitted limit values.
Double-acting quarter turn actuator
1. Put the hydraulic bypass valve in the closed position (CLOSE).
2. Select the operating direction of the quarter turn actuator — by actuating the
multiple way valve in the direction of the hydraulic cylinder side to be
pressurised.
3. To bring the quarter turn actuator into the selected position, actuate the pump
lever.
At the conclusion of manual operation:
4. Put the multiple way valve into the neutral position.
5. Put the hydraulic bypass valve in the open position (OPEN).
Single-acting quarter turn actuator
1. Put the hydraulic bypass valve in the open position (OPEN).
2. Close the multiple way valve (CLOSE).
3. To compress the spring and open the valve, actuate the pump lever.
4. To hold the valve position, put the hydraulic bypass valve in the closed position
(CLOSE).
At the conclusion of manual operation:
5. To slacken the spring and close the valve, put the hydraulic bypass valve in the
open position (OPEN) and rotate the multiple way valve anti-clockwise (OPEN).
8
Technical data
Hydraulic fluid
Type
EXXON MOBIL NUTO H32
1)
Viscosity at 40°C
32
Viscosity at 100°C
5.4
Boiling point
[°C]
>316
Flash point
[°C]
212
Floating decimal point
[°C]
–24
Density at 15°C
[kg/dm
3
]
0.872
Operating temperature
[°C]
–20…150
1)
Other media upon request
Fig. 6
