AMG-PESCH SADT 45-60 Series User manual

SADT/SADF/SAF/2015/ EN / 01 Page 1/14
AMG-PESCH GmbH
Installation and Maintenance Instructions
Type SADT / SADF / SAF 45-60, 50-70
AMG-PESCH GmbH
Adam-Riese-Straße 1
D - 50996 Cologne
Germany
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Homepage: www.amg-pesch.com
Contents
1.0 Introduction
1.1 Application area
1.2 Requirements for the usage acc. to regulations
1.3 Safety instructions for user
1.4 Labelling of the actuators
1.5 Certification acc. to ATEX (2014/34/EU)
1.6 Transport
1.7 Storage
2.0 Installation and commissioning
2.1 Air connection type SADT / SADF / SAF (standard version)
2.2 Mounting actuator - control valve
2.3 Mounting actuator - positioner or sensor slot
2.4 Mounting actuator - valve
2.5 Commissioning
3.0 Design and function
3.1 Type SADT / SADF (double-acting)
3.2 Type SAF (single-acting, with spring-return)
3.3 Direction of rotation
3.4 Parts list
4.0 Disassembly and assembly of the actuators
4.1 Lubrication grease and quantities
4.2 Type SADT
4.3 Type SADF / SAF
4.4 Reversal of the direction of rotation
4.5 Functional testing of the actuators
5.0 Period of maintenance and inspection
6.0 Liability and warranty
7.0 Technical data
1.0 Introduction
This installation and maintenance instruction contains very important indications, to assemble, to
maintain and operate correctly and securely the actuator. Respecting those guidelines will help you to
avoid danger, to reduce repair charges and downtime and will also enhance the reliability and
durability of the actuators. The installation and maintenance instruction has to be read and applied by
every person, who is in charge to work with the actuators. The installation and maintenance instruction
has to be disposal in every time for the working personal and for the employees, who are in charge to
maintain and repair the actuators. Keep one copy of the installation and maintenance instruction
always in the operating area of the actuators. Before starting any assembly- or maintenance working
actions, you have to read the installation and maintenance instruction completely. In case of doubt
please contact AMG-Pesch. Any technical changes and additions of description / instruction are
reserved.
Before any installation, commissioning and maintenance of the actuators, this
installation and maintenance instruction has to be read and the including safety
instructions have to be respected.
1.1 Application area
This installation and maintenance instruction is valid for AMG double piston rotary actuators in the
sizes of 45-60 and 50-70 in the series SADT (double acting with tandem pistons) and SADF (double
acting with spring storage) and SAF (single acting with spring return).

SADT/SADF/SAF/2015/ EN / 01 Page 2/14
AMG-PESCH GmbH
Installation and Maintenance Instructions
T
y
pe SADT / SADF / SAF 45-60, 50-70
A
MG-PESCH GmbH
A
dam-Riese-Straße 1
D - 50996 Cologne
Germany
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Homepage: www.amg-pesch.com
1.2 Requirements for the usage acc. to regulations
The AMG pneumatic double piston rotary actuators serve the automation of ball valves, plug valves,
butterfly valves and control valves. They are designed to operate the rotary movements of the
armature with 90°. The AMG pneumatic double piston rotary actuators are available in types:
 Type SADT - double acting with tandem pistons
 Type SADF - double acting with spring storage
 Type SAF - single acting with spring return
For the safe operation and the proper use, the following measures have to be fulfilled:
 Connecting of an control valve on the installation side by a provided control
 Only the dry air as a control medium has to be used. The dew point must be at least 10°C
lower than the lowest operating temperature
 The maximal temperature of the supply air takes 45°C
 The maximal admissible pressure can be accessed from the type plats, 6 bar in standard,
max. 8 bar
 The mesh size of the control medium is to filter at least with 40 µm (ISO 8573-1, grade 5)
 The actuators are suitable for ambient temperatures from -25°C up to +80°C (special
constructions can deviate from it)
 The shafts of the actuators are not appropriate to support external transversal forces
 Make sure, that no humidity or water could enter into the pneumatic connection of actuators
Type SADF und SAF with spring return
 The actuators are unsuitable for taking permanently torsion vibration in the end position
 Do not fall below the minimum switch time of the Actuators, mentioned in table 1.1
By operating with a deviating control medium as the dry air, the manufacturer has to
be absolutely contacted.
Size Min. switch times
45-60 1,0 sec.
50-70 1,0 sec.
Table 1.1
1.3 Safety instructions for user
Prerequisite for a safety-oriented workflow and a failure-free operation of the actuators is the
knowledge of the basic safety instructions in this installation and maintenance instruction.
Furthermore, the valid instructions and rules concerning accident prevention and the accepted
standards for a safety-conscious and competent workflow have to be respected. It is not allowed to
use the actuators for another aim than defined by the manufacturer. Obvious risks could be the
consequence. Local standards of working and safety rules always have to be respected. Ensure also
compliance with environmental laws and regulations. Working with oils, grease and other chemical
substances needs to respect the safety instructions of the concerned products. Lubricants have to be
disposed competently and in respecting the environment laws. The national standards have to be
respected. While using the Actuators, the user should obligatory consider the following information
concerning the prevention of occupational risks and should always guarantee their application.
Without respecting the advice contained in these instructions dangers can appear and
lead to the ineffectiveness of the guarantee and liability of AMG-PESCH.
 The actuators are to be pursued only in flawless, functional state
 The security equipment in the enclosure to the limitation of the pressure is to be checked
regularly for her functional ability

SADT/SADF/SAF/2015/ EN / 01 Page 3/14
AMG-PESCH GmbH
Installation and Maintenance Instructions
T
y
pe SADT / SADF / SAF 45-60, 50-70
A
MG-PESCH GmbH
A
dam-Riese-Straße 1
D - 50996 Cologne
Germany
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Homepage: www.amg-pesch.com
 The actuators may be linked up to the control, served and maintained only by skilled and
trained
 Repair and servicing work may be exported only by skilled and trained staff considering the
assembly instructions and servicing instructions
 Repair and maintenance should not to be executed in assembled state
 Prior to disassembly the actuators, the energy supply has to be disconnected and the
actuators should be turned into the safety position
 It is not allowed during the pressure to mount a manual emergency override on the extension
of the shaft
 It is not allowed to use the spanner or similar tools to carry out a manual emergency override
by actuators type SADF / SAF (with spring storage or spring return)
Caution:
Disregard cause risk of injury.
1.4 Labelling of the actuators
Every actuator is identified with a label type as described below:
Example of a label type
Elucidation on the type plate:
Original / German
version
Translation
meaning
Exemplary
description Comment
Typ Type: SADF13
45-60 90° RE
Design:
Size:
RE:
SADF13
45-60 90° rotation angle
Clockwise closing
n:25 Number of springs
Artikel Article: 217579 Clear component marking
Umgeb. Temp. Ambiance
temp. -25 to +80°C Admissible ambiance temperature
Auftrag Order: 626679 Clear order marking
Dichtwerkstoff seal material NBR Designation of the used elastomere
Max. zul.
Steuerdruck
max. admis.
Pressure 8 bar Maximal admissible pneumatic pressure
Druckanschluss
Pressure port G1/4 G1/2 Size of the used pressure ports
Bj. year of
manufacture 2013 year of manufacture of the actuator
Anschuss / SW
Connection/SW
DIN EN ISO
5211
F16-Y-D/L-46
F07:
Y:
D/L:
17:
flange size
with lead actuator
with an octagonal
SW of the octagonal
Min./max.
Federmoment
min./max.
spring torque 2200/3675 Nm Minimum and maximum back set moment of the
springs in the final situations

SADT/SADF/SAF/2015/ EN / 01 Page 4/14
AMG-PESCH GmbH
Installation and Maintenance Instructions
Type SADT / SADF / SAF 45-60, 50-70
AMG-PESCH GmbH
Adam-Riese-Straße 1
D - 50996 Cologne
Germany
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Homepage: www.amg-pesch.com
1.5 Certification acc. to ATEX (2014/34/EU)
The actuators are applicable in plants, witch they succumb to device group II category 2 acc. to
Directive 2014/34/EU. The maximal surface temperature depends essentially on the environmental
conditions (Marking Tx). The maximal permitted ambient temperature is indicated on the type plate.
II 2 GD c IIC Tx
The temperature increase about 10°C due to the self-heating is to be considered. The temperature of
the compressed supply air should not exceed 45°C. The added electrical / pneumatic equipment must
also comply with the explosion protection requirements of the plant. Explosive mixtures must not reach
to the actuator. For this, the solenoids with exhaust air recirculation have to be used. Conversion and
repair work should not be executed in an explosive atmosphere.
Differing operating conditions annul the certification of the actuators acc. to directive
2014/34/EU. Disregard of this rule constitutes a serious risk for the user and for the plant.
1.6 Transport
The transport may be carried out only by competent staff, which is qualified by knowledge and
experience in the field of transport and able to carry out such a work. Only use transport and tools,
which are undamaged and suitable for the load. The eye bolts for transport of the actuators 45-60 and
50-60 may include in accordance with DIN 580 following maximum last record at an angle of 45 °:
Size 45-60: 240 kg
Size 50-70: 500 kg.
The unit weights of the individual actuators without attachments parts are listed in Table 1.2
Weight [kg]
Size SADT SADF / SAF *)
45-60 155 190
50-70 265 320
Table 1.2
*) with 25 spring packs
If slinging equipment is attached to the actuator, they will be used only to transport the
actuator and not to fix the complete device (armature and actuator).
1.7 Storage
The actuators are to be stored in closed rooms and protected from harmful influences such as dirt or
humidity. If the package does not show any damage in transit, actuators or devices should only be
unpacked directly before installation. Unwrapped parts have to be protected from any soiling, humidity
and corrosion.
Note that the air connections have to be protected with plugs against entering of
foreign bodies as dirt and dust.
Do not stack unpacked actuators! By transport or storage damaged actuators can not be used at all.

SADT/SADF/SAF/2015/ EN / 01 Page 5/14
AMG-PESCH GmbH
Installation and Maintenance Instructions
T
y
pe SADT / SADF / SAF 45-60, 50-70
A
MG-PESCH GmbH
A
dam-Riese-Straße 1
D - 50996 Cologne
Germany
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Homepage: www.amg-pesch.com
Shipping screws:
These may only be used for transport of the actuator NOT for transporting of the
complete motorized unit.
2.0 Installation and commissioning
AMG-actuators are usually delivered with the necessary accessories, such as control valve and
feedback system. If this is not the case, the following instructions must be observed by fitting and
building the accessories or the armature.
2.1 Air connections type SADT / SAD / SAF (standard version)
AMG double-piston rotary actuators have as standard NAMUR interface for direct mounting of control
valves acc. to VDI / VDE 3845. The air connections are identified with "2" (inner chamber) and with "4"
(external chamber).
2.2 Mounting actuator - control valve
For the standard control it is required to combine:
 Type SADT double acting with tandem pistons and 5/2-way solenoid valve with piping
 Type SADF double acting with spring storage and 3/2-way solenoid valve with piping
 Type SAF single acting with spring return and 3/2 way solenoid valve with piping
We recommend the use of control valves with NAMUR connection. Using the NAMUR encoding
threaded pin, will ensure that the control valve can be only attached in the prescribed position
(insuring the specified direction of action of the actuator). If the single acting actuators (TYPE SAF)
are not controlled with a Namur-valve, it is essential to ensure that the ventilation of the outer spring
chambers is only done with clean, dry air. It is to ensure that there is no contamination of the actuator
with dust, liquids, vapours or corrosive Gases.
CAUTION: Ensure, while working of single acting actuator TYPE SAF, no corrosive
media can penetrate through the exhaust port - otherwise you risk a spring break.

SADT/SADF/SAF/2015/ EN / 01 Page 6/14
AMG-PESCH GmbH
Installation and Maintenance Instructions
T
y
pe SADT / SADF / SAF 45-60, 50-70
A
MG-PESCH GmbH
A
dam-Riese-Straße 1
D - 50996 Cologne
Germany
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Homepage: www.amg-pesch.com
SADF function: double acting
opened
SADF function: double acting
closed
SADF function: double acting,
by failure of pressure control
closing through springs force
SADT function: double acting, with tandem
pistons
SAF function: single acting, through springs force
closing
2.3 Mounting actuator - positioner or sensor slot
AMG double-piston rotary actuators have a standard interface according to VDI / VDE 3845 - fixing
level 1, for fastening feedback units and positioners. Close the feedback system or the positioner in
compliance with the rules and instructions of the manufacturer, if not happened yet.
CAUTION: Working on electrical installations or equipment must be done only by a
skilled electrician or by instructed persons under the direction and supervision of a
skilled electrician according to the electrical engineering and rules
2.4 Mounting actuator - valve
AMG double-piston rotary actuators have as standard connection for valves according to DIN EN ISO
5211 The connection fittings is usually using console and adapter (coupling) according to DIN EN
15081. The right direction of rotation of the actuator has to be respected. Non-standard structures
have a negative influence on the functioning and life of the valve unit. The actuator has to be
positioned in a way, that in the end positions a full bore of the armature, respectively the reliable
closing of the valve is guaranteed.
CAUTION: In a trial run of the valve unit, the safety regulations as well as the accident
prevention regulations have to be observed.
2.5. Commissioning
Please make sure before the operation that all screws are tightened as prescribed, that the control
pressure, as well as the feedback unit or positioner are connected properly. Check that the pipe
system is properly grounded, so that the electrostatic charging and potential differences could be
avoided.

SADT/SADF/SAF/2015/ EN / 01 Page 7/14
AMG-PESCH GmbH
Installation and Maintenance Instructions
T
y
pe SADT / SADF / SAF 45-60, 50-70
A
MG-PESCH GmbH
A
dam-Riese-Straße 1
D - 50996 Cologne
Germany
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Homepage: www.amg-pesch.com
Make sure that by operating the actuators no dangerous movements are initiated.
Back up any possible clamping and pinching off by respecting the protective devices.
Make sure either that the connected armature properly fitted in the piping or it is in dismounted state.
Additionally you have to make sure that the through bore of the valve is protected with protective caps
before you start a movement.
CAUTION: Take the actuator into operation, only when all the required safety devices
are installed and shall pose no danger from the mounted components.
3.0 Design and function
The transfer of shear motion into a rotary motion is done via two opposing pistons with cast racks. The
compressed air flows into one of the two chambers and the piston is in motion. These contribute to the
pinion and thus initiate a rotation
3.1 Type SADT / SADF (double-acting)
For ventilation of the inner chamber (port 2) rotates the operating shaft in the counter clockwise
direction (open), for ventilation of the outer chamber (port 4) clockwise (close).
SADT open SADT close
SADF open SADF close
3 2 Type SAF (single acting, spring return)
For ventilation of the inner chamber (port 2) rotates the operating shaft in the counter clockwise
direction (open) and stretches the springs. The stretched springs causes - when venting the interior
chamber or failure of control pressure – the rotation of the stem clockwise (close). Standard
construction is NC (normally closed).
SAF open SAF close

SADT/SADF/SAF/2015/ EN / 01 Page 8/14
AMG-PESCH GmbH
Installation and Maintenance Instructions
T
y
pe SADT / SADF / SAF 45-60, 50-70
A
MG-PESCH GmbH
A
dam-Riese-Straße 1
D - 50996 Cologne
Germany
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Homepage: www.amg-pesch.com
3.3 Parts list
Pos. Pcs. Designation Materials
1 2 Piston Aluminium
2 4 Guide bushing H370 Iglidur
3 2 O-Ring NBR *
4 4 O-Ring NBR *
5 2 Plain bearing PTFE Coal
6 2 Plain bearing PTFE Coal
7 1 Shaft Stainless steel
8 1 Plain bearing PTFE Coal
9 1 Plain bearing PTFE Coal
10 1 O-Ring NBR *
11 1 O-Ring NBR *
12 1 Bearing Washer Delrin
13 1 Adjusting washer Stainless steel
14 1 Circlip Stainless steel
15 2 Eyebolt Steel, galvanized
16 1 Body Aluminium, anodized
17 2 Guide rod Stainless steel
18 16 Screws Stainless steel
19 12 O-Ring NBR *
20 2 O-Ring NBR *
21 2 Intermediate cover Aluminium
22 2 O-Ring NBR *
23 2 Plain bearing H370 Iglidur
24 12 Screws Stainless steel
25 2 Piston rods Stainless steel
26 4/8 O-Ring NBR *
27 2 O-Ring NBR *
28 2 Pistons Aluminium
29 2/4 Discs Stainless steel
30 2 O-Ring NBR *
31 2/4 Nut Stainless steel
32 0-34 Safety spring assembly Spring steel, coated
33 2 Screws Stainless steel
34 2 Spring cover Aluminium
35 2 Screws Stainless steel
* Another special material corresponding to the order is possible

SADT/SADF/SAF/2015/ EN / 01 Page 9/14
AMG-PESCH GmbH
Installation and Maintenance Instructions
T
y
pe SADT / SADF / SAF 45-60, 50-70
A
MG-PESCH GmbH
A
dam-Riese-Straße 1
D - 50996 Cologne
Germany
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Homepage: www.amg-pesch.com
3.4 Direction of rotation
Looking down at the actuator the direction of rotation is in the standard construction clockwise closing
(NC normally closed). Alternatively, the actuators are supplied with the reserve rotation (NO normally
open)
Standard construction NC Standard construction NO
4.0 Disassembly and assembly of the actuators
CAUTION!
In principle, work and manipulations are banned when rotary actuators are in the
alternative energy related! In principle, only work on pressure less actuators!
CAUTION!
Work on actuators may only be performed by trained and qualified staff. The accident
prevention regulations must be observed.
Before disassembly, all attachments on the actuators are to be removed (eg. valves, control valves,
etc.). Before assembly of the actuator, all parts must be cleaned, checked on damage, if necessary,
replaced and all seals have to be renewed. The bearings, the contact surface in the housing (body), all
fittings, seals, spring assemblies and the tooth system must be lubricated before installation. A new
circlip (14) should be always used during assembly of the shaft. Assembly and disassembly with the
help of a crane system. The current safety standards for lifting equipment must be observed.
CAUTION!
After installation make sure that all cover screws (16) are tightened according to the
instructions and the circlip (14) is properly mounted.
4.1 Lubrication grease and quantity
For the protection of the actuators and to ensure their function, we only recommend the use of original
AMG - grease. The following greases are for use for different applications when operating in dry air:
Temperature range Grease grade
Normal temperature
-25°C to +80°C AMG-Standard grease / Renolit H442
High temperature
-25°C to +100°C AMG-High temperature grease / Syntheso glep 1
Low temperature -40°C to +60°C AMG- Low temperature grease / Isoflex Topas NB52
For deviating operating conditions please take contact with AMG-Pesch.
Defined grease quantity
Size Grease qty. [g]
45-60 280
50-70 320

SADT/SADF/SAF/2015/ EN / 01 Page 10/14
AMG-PESCH GmbH
Installation and Maintenance Instructions
T
y
pe SADT / SADF / SAF 45-60, 50-70
A
MG-PESCH GmbH
A
dam-Riese-Straße 1
D - 50996 Cologne
Germany
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Homepage: www.amg-pesch.com
4.2 Type SADT
4.2.1 Disassembly of the actuators type SADT
1. Remove cover screws (18) and detach the two flat cover (34) with seals.
2. Loosen the nuts (31) and remove the two pistons (28) carefully.
3. Loosen the screws (24) and remove both intermediate cover (21) carefully.
4. Push out by turning the shaft (7) on the external square counter-clockwise two pistons (1) with
guide rods (17) from the housing (16).
5. Mark the position of the pistons (1) for the reassembly.
6. Remove the circlip (14), the washer (13) and the bearing washer (12) and push out the shaft
(7) downward from the housing (16).
4.2.2 Assembly of the actuators type SADT
1. Set up the shaft (7) with the greased O-rings (10+11) and the bearings (8+9) from the bottom
in the housing (16).
2. Equip and grease both pistons (1) with the piston sealing ring (3) and O-rings (4) and the
bearings (5+6).
3. Equip the piston rods (25) with the O-rings (26) and screw with the nut (31) and washer (29) in
each one piston (1).
4. Slide the guide rods (17) from the top up to the O-ring (4) into the piston (1).
5. Grease the sliding surfaces of the pistons in the body (16)
6. Insert the pistons (1) from the left and right side in the housing (16). The guide rods (17) are
pushed through free piston bore on the opposite. Observe the installation position!
7. The pistons (1) should be pushed together until the piston crowns terminate flush with the
housing (16).
8. When the two pistons (1) terminates flush to the housing (16), both pistons (1) will be pressed
in mutual termination inside by further rotation of the shaft (7) clockwise. "CLOSED" position.
9. Adjust the guide rods (17), until they have roughly the same body position on each side.
10. Grease lightly the cover seal (O-ring) (19+20+22+27).
11. Equip the intermediate cover (21) with O-Rings (19+20+22+27) and bearings (23), then
tighten the screws (24) on the housing (16).
12. By doing the cover or cover assembly, note that the longitudinal bore is located within in the
housing (16) of the cover seal (O-ring) (20).
13. Provided the pistons (28) with seals (30) and screw with the nut (31) and washer (29) on each
of a piston rod (25).
14. Fix both end covers (34) with the cover screws (18). Tighten the cover screws (18) cross over
with the appropriate torque (see Table 4.2).
15. Check the shaft positioning in position "close". The corners of the inner octagon of the shaft
are at the cross axis of the actuator and the groove in the male square across the actuator. If
this is not the case, press shaft (7) down from the housing (16) and insert it into the correct
position in the housing (16).
16. Bring the bearing washer (12) and the adjusting washer (13) on the free shaft end and secure
with the circlip (14).
4.3 Type SADF / SAF
CAUTION!
Disassembly of the spring cover may only be performed when the actuator stands in
the safety position. Risk of Injury!
4.3.1 Disassembly of the actuator type SADF / SAF
1. These actuators are equipped with bound spring packet (32).
2. Loosen all cover bolts evenly (18). After a few turns, the bias of the springs is received in the
spring assembly.

SADT/SADF/SAF/2015/ EN / 01 Page 11/14
AMG-PESCH GmbH
Installation and Maintenance Instructions
T
y
pe SADT / SADF / SAF 45-60, 50-70
A
MG-PESCH GmbH
A
dam-Riese-Straße 1
D - 50996 Cologne
Germany
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Homepage: www.amg-pesch.com
3. Should by loosen of the cover screws (18) for a way of 4-5 mm, the spring tension does not
subside, interrupt the process. May be the sleeve of the spring assembly (32) is damaged. In
this case, you solve two given opposite screws (18) completely and replace them with two
longer screws that you screw correspondingly low. Now you can secure the cover (18) further
solve evenly until the remaining shorter screws are fully screwed out. Replace these again by
appropriate screws and repeat the process as long as until the springs are fully relaxes and
you can remove the end cover (34) safely.
CAUTION!
The spring cover is under pressure! The springs have to be seen as energy storage
and they can cause injury in case of abuse!
4. Both end covers (34) with seals will be removed.
5. Loosen the screws (24) and remove both intermediate cover (21) carefully.
6. By turning the shaft (7) on the external square counter-clockwise, the both pistons can be
pushed out (1) with the guide rods (17) from the housing (16).
7. Mark the position of pistons for the reassembly.
8. Remove the circlip (14), the washer (13) and the bearing washer (12) and press shaft (7)
downward from the housing (16).
4.3.2 Assembly of the actuator type SDAF / SAF
1. Insert the Shaft (7) with the greased O-rings (10+11) and the bearings (8+9) from below into
the housing (16).
2. Equip and grease both pistons (1), piston seals (3+4) and bearings (5+6).
3. Slide the guide rods (17) from above side the way until the O-ring (4) into the piston (1).
4. Grease the sliding surfaces of the pistons in the body (16)
5. Put the pistons (1) from the left and right into the housing (16). The guide rods (17) are
pushed through the opposite free piston bore. Observe the correct installation position!
6. Slide the pistons (1) together until the piston heads are flush with the housing (16).
7. Close both pistons (1) uniformly with the housing (16), which piston (1) by further rotation of
the switching shaft (7) are pressed in the clockwise direction until mutual abutment inwards.
"CLOSED" position.
8. Convey the guide rods (17), until both have about the same housing overhang on each side.
9. Cover seal (O-ring) (19+20+22+27) lightly grease.
10. Equip the intermediate cover (21) with the O-rings (19+20+22+27), and the plain bearings (23)
and then with the screws (24) on the housing (16).
11. Note that the cover assembly is in the longitudinal bore in the housing (16) within the cover
seal (O-ring) (20).
12. Provided the piston (28) with the seals (30) and the nut (31) and washer (29) on each of the
piston rod (25) screw and insert it into the intermediate cover (21).
13. Put the spring assemblies (32) into the pockets provided in the piston (28). In the spring
configuration, make sure that the arrangement of the spring assemblies n as a function of the
number of springs is carried out in accordance with Table 4.1.
14. Note that the total number n of the spring unit is the same with the n indicated on the label.
15. Perform this work always only on a cover side completely.
16. Fix both end cap (34) with the cap screws (18). Tighten the cover bolts (18) crosswise to the
appropriate torque. (see Table 4.2)
17. Check the shaft in "CLOSE" position. The corners of the shaft inside octagon are transversely
to actuator the axis intersection of the actuator and the groove in the outer square. If this is not
the case, shaft (7) downward from the body (16) button and insert it into the correct position in
the body (16).
18. Bearing washer (12) and adjusting washer (13) over the free end of shaft and secure it with
the circlip (14).

SADT/SADF/SAF/2015/ EN / 01 Page 12/14
AMG-PESCH GmbH
Installation and Maintenance Instructions
T
y
pe SADT / SADF / SAF 45-60, 50-70
A
MG-PESCH GmbH
A
dam-Riese-Straße 1
D - 50996 Cologne
Germany
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Homepage: www.amg-pesch.com
Table 4.1
Size Thread Torque [Nm]
45-60 M16 145
50-70 M20 290
Table 4.2
4.4 Reversal of the direction of rotation
If necessary, the rotation direction of the actuator can be changed. Therefore are the following
processing steps essential:
1. Disassembly the Cover and the piston as described in 4.2.1 and 4.3.1
2. To change the direction of rotation, the pistons are to be rotated by 180° and, as mentioned in
4.2.2 and 4.3.2, reassembled.
3. Label the actuator with the correct direction of rotation.
Rotation direction NC Rotation direction NO
4.5 Functional testing of the actuator
Caution! When the actuator is pressurized without an assembled valve there is a risk
that the pinion will be pushed out on the underside of the drive in case of damaged or
the absence of the circlip.

SADT/SADF/SAF/2015/ EN / 01 Page 13/14
AMG-PESCH GmbH
Installation and Maintenance Instructions
T
y
pe SADT / SADF / SAF 45-60, 50-70
A
MG-PESCH GmbH
A
dam-Riese-Straße 1
D - 50996 Cologne
Germany
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Homepage: www.amg-pesch.com
To eliminate this risk to persons and to objects in close proximity, the functional test must be
performed as follows:
1. Separate the steering air line from the actuator
2. If necessary remove the actuator from the valve
3. Secure according to the sketch the Pinion with special tool
4. Pose the actuator with the underside on solid ground
5. Connect the steering air line with the actuator
6. Check the actuator by supplying air
5.0 Period of maintenance and inspection
Basically, are AMG double-piston rotary actuators in the standard lubricated for lifetime and therefore
maintenance free. The lifetime is calculated at 500,000 switching cycles. Those are the necessary
conditions:
 Professional build-up of the actuator,
 Properly processed control medium
 Normal environmental conditions
 Compliance with the intended use.
The warranty expires when modifications and adjustments work is done on the actuator.
6.0 Liability and warranty
The liability and warranty expires if the use of the actuators is not being done according to the
envisaged basis. All information and instructions for operating and maintenance are carried out in light
of our experience and know-how in good faith. The original version of this Installation and
maintenance manual has been prepared in German language and has been examined by us
objectively. The translation in the respective country / language of the contract was performed by a
certified translation office. This manual has been compiled with great care. However if you notice
some omissions and / or error, please contact us.
7.0 Technical data
 Pivoting range: 0° to 90°
 Pressure range: up 6* bar in standard
 Control medium: air (dry or oily)
 Temperature range:
NBR O-rings: -25°C to +80°C
Cryogenic NBR O-rings: -40°C to +60°C
FKM O-rings: -25°C to +100°C
 Lubrication: Permanent lubrication
When ordering spare parts please indicate the type and size of the rotary actuator plus the item and
the order number (see type label).
* Option 8 bar

SADT/SADF/SAF/2015/ EN / 01 Page 14/14
AMG-PESCH GmbH
Installation and Maintenance Instructions
Type SADT / SADF / SAF 45-60, 50-70
AMG-PESCH GmbH
Adam-Riese-Straße 1
D - 50996 Cologne
Germany
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Homepage: www.amg-pesch.com
AMG-PESCH GmbH
Adam-Riese-Straße 1
D - 50996 Cologne
Germany
Phone: [phone]
Fax: [phone]
Email: [email protected]
Homepage: www.amg-pesch.com