Burkert 2051 User manual
Operating Instructions
Bedienungsanleitung
Manuel d‘utilisation
Pneumatic swivel actuator
Pneumatischer Schwenkantrieb
Entraînement pivotant pneumatique
We reserve the right to make technical changes without notice.
Technische Änderungen vorbehalten.
Sous réserve de modifications techniques.
© 2008 - 2010 Bürkert Werke GmbH
Operating Instructions 1002/02_EU-ML_00805791 / Original DE
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Operating Instructions
The operating instructions describe the entire life cycle of the device.
Keep these instructions in a location which is easily accessible to
every user and make these instructions available to every new owner
of the device.
Failure to observe these instructions may result in hazardous
situations.
The operating instructions must be read and understood.•
Failure to observe the warning may result in a fatal or serious • injury.
Failure to observe the warning may result in serious injuries or death. •
Failure to observe this warning may result in a moderately • severe or minor injury.
Failure to observe the warning may result in damage to the • device or the equipment.
Designates additional significant information, tips and
recommendations.
Refers to information in these operating instructions or in
other documentation.
designates a procedure which you must carry out.
→
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Intended Use
The pneumatic swivel actuator Type 2051 is designed for the • actuation of rotary valves, such as ball or butterfly valves. It can
be used indoors as well as outdoors, in compliance with the
permissible operating conditions.
The pneumatic swivel actuator Type 2051 may be used only in • conjunction with third-party devices and components recom-
mended and authorised by Bürkert.
During use observe the permitted data, the operating condi-• tions and conditions of use specified in the contract documents
and operating instructions, as described in chapter 6.Technical
Data.
Correct transportation, correct storage and installation and • careful use and maintenance are essential for reliable and
problem-free operation.
Use the pneumatic swivel actuator type only as intended.•
If exporting the system/device, observe any existing restrictions.
The pneumatic swivel actuator type 2051 may not be operated with
corrosive gases, water or hydraulic oil (for applications with these
media, please contact your Bürkert sales office).
Do not introduce any aggressive, flammable, corrosive or explosive •
media into the systems media connections.
Do not introduce any liquids into the media connections.•
Do not put any loads on the housing (e.g. by placing objects on it •
or standing on it).
Do not make any external modifications to the device housings. Do •
not paint the housing parts or screws!
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Basic Safety Instructions
These safety instructions do not make allowance for any:
Contingencies and events which may arise during the installation, •
operation and maintenance of the devices,
Local safety regulations; the operator is responsible for observing •
these regulations, also with reference to the installation personnel.
Before loosening the lines and valves, turn off the pressure and • vent the lines.
To prevent injury, ensure that:
The system cannot be activated unintentionally.•
Installation and repair work may be carried out by authorised • technicians only and with the appropriate tools.
After an interruption in the power supply or pneumatic supply, • ensure that the process is restarted in a defined or controlled
manner.
The device may be operated only when in perfect condition and • in consideration of the operating instructions.
The general rules of technology apply to application planning • and operation of the device.
The pneumatic swivel actuator type 2051 was developed
with due consideration given to the accepted safety rules
and is state-of-the-art. However, dangers can still arise.
Failure to observe this operating manual and its operating instruc-
tions as well as unauthorized tampering with the device release us
from any liability any also invalidate the warranty covering the devices
and accessories!
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General Information
Check immediately upon receipt of the delivery that the contents are
not damaged and that the type and scope agree with the delivery note
and packing list.
If there are any discrepancies, please contact us immediately.
Bürkert Fluid Control Systems
Sales Center
Christian-Bürkert-Str. 13-17
D-74653 Ingelfingen
Tel. + 49 (0) 7940 - 10 91 111
Fax + 49 (0) 7940 - 10 91 448
E-mail: [email protected]
Contact addresses can be found on the final pages of the printed
operating instructions.
And also on the Internet at:
www.burkert.com Bürkert Company Locations
This document contains no promise or guarantee. Please refer to our
general terms of sales and delivery. The warranty is only valid if the
device type 2051 is used as intended in accordance with the specified
application conditions.
The warranty extends only to defects in the pneumatic
swivel actuator type 2051 and its components.
We accept no liability for any kind of collateral damage
which can occur due to failure or malfunction of the device.
The operating instructions and data sheets for type 2051 can be found
on the Internet at:
www.buerkert.com Documentation Type 2051
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System Description
The pneumatic swivel actuator type 2051 is designed for the actuation
of rotary valves, such as ball or butterfly valves.
Pneumatic swivel actuatorFig. 1:
The pneumatic swivel actuator Type 2051 consists of a single or
double-acting linear actuator with an internal coupling to a rotary
piece and an universal interface as per ISO 5211. During the linear
movements of the pistons through the pressure force of the control
air and the force of the resetting springs, the drive shaft is turned via
the coupling. This rotary movement can be used for the actuation of
respective control elements, such as ball or butterfly valves.
Single-acting actuator; resetting by spring force; activation e.g. with
pilot valve.
A
P
Single-acting actuator; resetting by spring force.
B
P
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System Description
Connection 4Connection 2
Counterclockwise rotation Fig. 2:
(Control function B: Clockwise rotation)
Control air on connection 2 moves the pistons in the direction of the
actuator covers, the springs are tensioned. Rotation is anti-clockwise.
Exhaust air via connection 4.
Connection 2 Connection 4
Clockwise rotation Fig. 3:
(Control function B: Counterclockwise rotation)
Pressure loss or compressed-air failure on connection 2 allows the
springs to move the pistons inwards. Rotation is clockwise. Exhaust
air via connection 2.
Double-acting actuator; activation e.g. with pilot valve.
A
P
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System Description
Connection 2 Connection 4
Counterclockwise rotationFig. 4:
Control air on connection 2 moves the pistons in the direction of the
actuator covers. Rotation is anti-clockwise. Exhaust air via connection
4.
Connection 2 Connection 4
Clockwise rotationFig. 5:
Control air on connection 4 moves the pistons inwards. Rotation is
clockwise. Exhaust air via connection 2.
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Technical Data
Temperature
NBR Spezial -40 ... +80 °C
FKM -15 ... +150 °C
CE - mark conforms to EN 1127-1 EN 13463-1
Weight: 1.0 to 17.0 kg
depending on actuator design
Housing material: coated, extruded aluminum alloy
Sealing material: NBR-Special,
FKM on request
Control medium: Compressed air (max. Particle size 30 µm)
dry or oiled
Pressure range: 3 to 8 bar single-acting actuator
2.5 to 8 bar double-acting actuator
Air rate: 0.09 to 4.0 l,
depending on actuator size
Connections: G 1/8" for actuator size 15 - 100
G 1/4" from actuator size 150
Dimensions: See data sheet
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Assembly / Installation
Before loosening the lines and valves, turn off the pressure and • vent the lines.
Installation may be carried out by authorised technicians only • and with the appropriate tools!
Secure system from unintentional activation.•
Following assembly, ensure a controlled restart.•
During the installation, please observe the operating instruc-
tions of the respective fitting.
The swivel actuator can be installed in any position.
Before installation:
Make sure that the mechanical connection of the swivel actuator
→
neatly fits with the fitting to prevent friction.
Connect the pipes for the control air the connections provided for
→
this purpose on the swivel actuator.
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Start-Up
Under pressure, poorly connected control air lines can come
loose.
Make sure the line connections of the control air are securely • connected with the respective connections of the swivel
actuator.
Improper operation may result in injuries as well as damage to the
device and the area around it.
Before start-up, ensure that the operating personnel are familiar • with and completely understand the contents of the operating
instructions.
Observe the safety instructions and intended use.•
Only adequately trained personnel may operate the equipment / • the device.
Improper operation may result in injuries as well as damage to the
device and the area around it.
The operating personnel must know and have understood the • contents of the operating instructions.
Observe the safety instructions and intended use.•
Only adequately trained personnel may operate the equipment / • the device.
Depending on the function, the pneumatic swivel actuator is activated
by means of compressed air (up to 8 bar). The control air can be fed
directly or via attached control valves into the respective connections
on the swivel actuator.
For functional principles, refer to chapter 5.System Description.
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Maintenance, Troubleshooting
Before loosening the lines and valves, turn off the pressure and • vent the lines.
Maintenance may be carried out by authorised technicians only • and with the appropriate tools!
Secure system from unintentional activation.•
Following maintenance, ensure a controlled restart.•
It is recommended to perform maintenance after every 500 000 to
1 000 000 circuit connections to guarantee a long service life of
swivel actuators. If necessary, the respective sealing elements must
be replaced (see the following chapter 10.3.Replacing of the sealing
elements).
For long-term operation or rough ambient conditions, we recommend
relubrication of the moving parts (e.g. pistons, gear racks) in the actuator
with silicone-free grease (e.g. Barrierta LF 55/3).
A prerequisite for a long service life is the operation of the swivel
actuator with filtered compressed air.
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Maintenance, Troubleshooting
43
20*
07*
17
17.1
17.2
17.3
40
15*
16*
17
14*
13
30
09*
12
06*
60
21*
19.5
19.6
50
65
08*
01
05*
02 04
03
11*
39
19.1
19.0
18
10 08*
Component overviewFig. 6:
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Maintenance, Troubleshooting
01 1 Cam (end position setting)
02 2 Stop cap screw
03 2Washer
04 2 Lock nut (Stop screws)
05* 2 Piston guide jaws
06* 1 Shaft bearing sleeve (top)
07* 1 Shaft bearing sleeve (bottom)
08* 2 Thrust washer
09* 2Plug
09.1* 2 Sealing ring (for AT801U)
10 1 Support washer
11* 2 Seal (adjusting screw)
12 2 Piston guide
13 8/12/16 Cover screw
14* 2 Cover seal
15* 2 Piston guide band
16* 2 Piston seal
17 min. 5 / max. 12 Pressure spring cartridge
17.1 max. 2 Spring (for AT045U + AT051U)
17.2 max. 2 Spring (for AT045U + AT051U)
17.3 max. 2 Spring (for AT045U + AT051U)
18 1 Retaining ring (shaft)
19 1 Position indicator (for AT051U +
AT101U)
19.0 1 Graduated ring
19.1 1 Position indicator
19.5 1 Adaptor (top)
19.6 2 Hexagon socket head screw
20* 1 Shaft seal (top)
21* 1 Shaft seal (bottom)
30 2Cover
39 1 Screw (position indicator)
40 2Piston
43 1 Centering (on request)
50 1Housing
60 1Shaft
65 1 Plastic insert
* Recommended spare parts
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Maintenance, Troubleshooting
If the actuator has to be removed for maintenance, first
remove the actuator from the fitting.
The actuator is not under pressure and that the springs are in •
the end position,
The connections 2 and 4 are not under pressure and are free •
from any accessories or devices.
The actuator is in the home position and that the pistons are all • the way in.
39
19
Removing position indicatorFig. 7:
Remove screw (Pos. 39) if fitted
→,
Remove position indicator (Pos. 19
→ or 19.1) from shaft end. If
required, use a screwdriver as a lever,
Remove graduated ring (Pos. 19.0) from housing.
→If required, use
a screwdriver as a lever.
02
Removing the adjusting screwsFig. 8:
Remove adjusting screws together with nuts (Pos. 04) and washers
→
(Pos. 03),
Remove seals (Pos. 11) from the adjusting screws and dispose of
→
(if all sealing rings are replaced).
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Maintenance, Troubleshooting
When removing a single-acting actuator, loosen the cover screws
alternately. If force is still applied to the covers when the screws have
been undone, this may indicate that a spring cartridge is damaged or
that the pistons have moved all the way in. Continued removal of the
covers may result in serious injuries to the maintenance personnel.
Stop removal immediately.•
Send actuator back to the supplier.•
2
4
31
2
34
5
1
6
2
34
5
1
6
7
8
Unscrew cover screws in the sequence:
Fig. 9: Installation of the covers
Removing covers from the single-acting actuator (remove one cover
after another):
Unscrew the cover screws (Pos. 13) until the covers are no longer
→
under spring force,
Unscrew the screws completely,
→
Remove covers and the springs. →
Removing covers from the double-acting actuator (remove one cover
after another):
Unscrew the cover screws until the screws are completely
→
unscrewed and the covers are loose,
Remove the O-rings using a screwdriver,
→
Dispose of sealing rings (if these are being replaced). →
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Maintenance, Troubleshooting
Removing the pistonsFig. 10:
D• o not use compressed air to remove the pistons.
Secure the housing (Pos. 50) with a vice or similar device,
→
Rotate the shaft until the pistons are released, →
Remove the O-rings (Pos. 16) using a screwdriver, →
Remove the piston guide jaws (Pos. 05) and the piston guide →
belts (Pos. 15),
Dispose of the belts and jaws
→.
Removing the shaftFig. 11:
Carefully remove graduated collar using a screwdriver and remove
→
the circlip using circlip pliers,
Remove washer and the outer thrust washer,
→
Apply light pressure to the upper side of the shaft (Pos. 60) until the →
inner thrust washer (Pos. 08) and the cams can be removed,
Remove the shaft from the housing. If the shaft does not come out
→
freely, carefully tap the upper shaft end using a plastic hammer,
Remove the upper (Pos. 06) and lower (Pos. 07) shaft bearing
→
bushes and upper (Pos. 20) and lower (Pos. 21) shaft seals,
Dispose of and replace the sockets (Pos. 06 and 07), inner and
→
outer thrust washers and sealing rings (if required, also replace
the plugs (Pos. 09)).
All removed components which are not replaced must be
cleaned and checked for wear before re-installation.
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