Festo DAPS..R..-F..-MW.. - Manual (Page 2)

Indicator in right-hand position (outside)
A) Double-acting drive:
Turning the handwheel clockwise moves the
indicator outwards.
– The process valve closes.
B) Single-acting drive:
Turning the handwheel anti-clockwise
moves the indicator outwards.
– The process valve opens.
Fig. 7
4 Application
The DAPS semi-rotary drive is intended to activate right-closing process valves,
such as ball valves and butterfly valves with a rotation angle from 0° (valve closed)
to 90° (valve open).
It is completely tailored to the requirements of the processing industry and is suit-
able for control of media-flow process valves in fluid engineering systems.
5 Transport and storage
Ensure the following storage conditions: short storage times in cool, dry, shaded
and corrosion-resistant locations.
Warning
Danger of crushing! Danger of shearing!
The DAPS weighs up to about 50.6 kg, depending on the product version.
Body parts can be crushed or cut off if the product falls.
• For product versions weighing more than 12 kg, always use suitable load-car-
rying equipment in order to handle the product safely during transport and
assembly.
Note
Improper handing can cause damage to the product!
•
Never use the handwheel to lift the drive.
6 Requirements for product use
Note
Improper handling can result in malfunctions.
• Make sure that all the instructions in this chapter are always observed. The
product will then function correctly and safely.
• Compare the maximum values specified in these operating instructions with
your actual application (e.g. pressures, forces, torques, masses, speeds, tem-
peratures). The product can only be used in compliance with the relevant safety
guidelines if the maximum load limits are observed.
• Ensure that all applicable regulations for your location are adhered to, e.g. of
the trade association or national institutions.
• Take into consideration the ambient conditions at the location of use. Corrosive
environments reduce the service life of the product.
• Remove the packaging except for the adhesive labels on the compressed air
supply ports (danger of contamination). The material used in the packaging has
been specifically chosen for its recyclability (exception: oil paper = residual
waste).
• Use the product in its original status, without any unauthorised product modific-
ations.
• Protect the device from pressure fluctuations. Use control valves for regulating
pressure and excess pressure.
• Make sure the compressed air is properly prepared (Technical data
section 12).
• Before carrying out installation, dismantling and maintenance work, switch off
the compressed air supply and vent the drive. Secure compressed air supply
against accidental restarting.
• Never remove the end cap, shield tube or handwheel.
• Never use a wrench to operate the transmission shaft by hand.
• Never use levering tools to operate the handwheel.
Danger
In the case of single-acting DAPS, high spring forces (mechanically stored en-
ergy) are at work inside the product.
Parts can be ejected and cause serious personal injuries if the end cap is dis-
mounted.
• Never remove the end cap!
• Return the product to Festo if defective or for service.
Note
• Use only unlubricated compressed air under normal conditions.
The DAPS semi-rotary drive possesses an initial lubrication which suffices for the
complete service life.
Note
Continuous operation at the limits of the specified ambient temperature and
work frequency can reduce the service life of the semi-rotary drive.
• Use lubricated compressed air for continuous operation under extreme con-
ditions. The oil must be chemically inert and must not carbonise.
If lubricated compressed air is used:
The initial lubrication will be washed out. The semi-rotary drive may then only be
operated with lubricated compressed air.
7 Installation
Note
The following instructions on fitting the DAPS semi-rotary drive onto a pro-
cessing valve may only be used in the following circumstances:
– The semi-rotary drive is installed in the direction of the tubing.
– If a 2-way process valve is used:
The 2-way process valve is closed.
– If a 3-way process valve is used:
The switching status of the 3-way process valve is known.
Note
If a 3-way processing valve is used:
• Align the semi-rotary drive so that the port openings for a NAMUR valve face
the side without tubing.
Note
Outflowing processing medium must not penetrate into the semi-rotary drive.
The housing of some semi-rotary drives has a leakage groove on the process
valve port side. If the processing valve leaks, the leakage can flow through the
open groove.
• For housings with a leakage groove, make sure the 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 mounted with or without an adapter bridge.
If there are high media temperatures in the tubing and in processing valve:
• Use an adapter bridge and also a heat-insulated coupling extension.
7.1 Mechanical installation
• In order to mount the DAPS semi-rotary drive, set the switching shaft of the
process valve so that the desired operating method for opening and closing the
process valve is implemented.
• Note that a processing valve with butterfly valve can only be opened in one dir-
ection and closed in the opposite direction.
• Observe the tightening torque:
Thread M5 M6 M8 M10 M12 M14 M16 M20
Tightening torque [Nm] 5 …
6 10 …
11 20 …
23 45 ...
50 80 …
85 125 …
135 190 …
200 370 …
390
Fig. 8
To mount the semi-rotary drive without an adapter
bridge:
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.
Fig. 9
2. Fasten the semi-rotary drive with 4 corrosion-res-
istant screws and retaining rings (material: VA) to
the connection flange of the process valve.
3. Tighten all the screws in diagonally opposite se-
quence. Tightening torque Fig. 8.
4. Continued Point 6.