OPERATING, ASSEMBLY AND MAINTENANCE INSTRUCTIONS · counter clockwise (SRP only) Fig. 4 - CCW...

PFEIFFER Chemie-Armaturenbau GmbH · Hooghe Weg 41 · 47906 Kempen Telefon: +49 2152 2005-0 · Telefax: +49 2152 1580 E-Mail: [email protected] · Internet: www.pfeiffer-armaturen.com

1 of 14 EB 31a_EN Issue August 2018

OPERATING, ASSEMBLY AND MAINTENANCE INSTRUCTIONS

EB 31a Translation of original instructions

Rack-and-pinion Actuator BR 31a Type SRP and DAP Issue August 2018



CONTENTS

1. NOTES OF OPERATION, ASSEMBLY AND MAINTENANCE INSTRUCTIONS 3

1.1 General 3 1.2 Definition of signal words 3 1.3 Qualification of the operating personnel 3

2. DESIGN, PRINCIPLE OF OPERATION, AND DIMENSIONS 3

3. OPERATING CONDITIONS 3

3.1 Operating conditions 3 3.2 WARNINGS 3 3.3 Operating media 4 3.4 Supply pressure 4 3.5 Operating temperatures 4 3.6 Response time 4 3.7 Rotation and travel limitation 4 3.8 Lubrication 4 3.9 Coating and corrosion protection 4 3.10 Function and direction of rotation 4 3.11 Fail-safe position 5

4. ACTUATOR DESIGN UND MOUNTING INSTRUCTIONS 5

4.1 Principle of operation 5 4.2 Important safety instructions 6 4.3 Control and connections 6 4.4 Mounting accessories 6 4.5 Mounting the actuator onto valves 6 4.6 Changing the direction of action/fail-safe position 7 4.7 Alternative mounting options 7

5. MAINTENANCE AND ASSEMBLY INSTRUCTIONS 8

5.1 Fourth generation of rack-and-pinion actuators (version manufactured from 2000) 9 5.1.1 Screw sizes 9 5.1.2 Disassembly of the actuator 9 5.1.3 Actuator assembly 11

6. TRANSPORT UND LAGERUNG 13

7. ACTUATOR DESIGNATION AND NAMEPLATE 13

8. CUSTOMER INQUIRIES 14



1. NOTES OF OPERATION, ASSEMBLY AND MAINTENANCE INSTRUCTIONS

1.1 General These instructions are intended to support the user in the assembly, maintenance, and repair of BR 31a Rack-and-pinion Actuators.

• Before operating the unit, please read this manual thoroughly and retain it for future reference

• If you have any questions about these instructions, contact PFEIFFER‘s After-sales Service Department.

Technical specifications, as a result of further development of valves mentioned in these instructions are subject to alteration without notice.

The text and illustrations do not necessarily display the scope of supply or any ordering of spare parts.

Drawings and graphics are not to scale. Customer-specific designs not in accordance with our standard product range are not shown.

These instructions apply to the actuator only. In addition, refer to the instructions of the mounted valve.

Info: Parts subject to wear are not covered by the warranty.

1.2 Definition of signal words

DANGER Hazardous situations which, if not avoided, will result in death or serious injury

WARNING Hazardous situations which, if not avoided, could result in death or serious injury

Notice Property damage message or malfunction

Note Additional information

Tip Recommended action

1.3 Qualification of the operating personnel The device may only be mounted and started up by skilled staff who are familiar with the assembly, start-up, and operation of this product.

In these maintenance and assembly instructions, the term skilled staff refers to individuals who are able to judge the responsibilities assigned to them as well as recognize potential hazards due to their specialized training, knowledge, and experience as well as their special knowledge of the relevant standards.

These instructions apply to the actuator only. In addition, refer to the instructions of the mounted valve.

2. DESIGN, PRINCIPLE OF OPERATION, AND DIMENSIONS

Design, principle of operation and dimensions including all further details and technical data can be found in the Data sheet <TB 31a>.

3. OPERATING CONDITIONS

3.1 Operating conditions The rack-and-pinion actuator is suitable for use in closed and open environments without additional weather protection.

3.2 WARNINGS

• Referring to the Machinery Directive 2006/46/EU, the actuators can be classified as “partly completed machinery” (see declaration of incorporation). As a result, the actuator cannot put into service until the machinery and/or the system, into which the actuator is to be incorporated, has been declared in conformity with the provisions of the Directive 2006/42/EU.

• Actuators are designed, produced, and classified according to the ATEX Directive 2014/34/EU. The use of the actuators in potentially explosive atmosphere zones must comply with the ATEX classification indicated on the actuator nameplate and according to the ATEX safety regulations.

• It is important that the actuator is used only within the working limits permitted in the technical specifications.

• Do not operate the actuator outside the temperature limits: this could damage internal and external components (disassembly of single-acting actuators may be dangerous).

• Do not operate the actuator outside the pressure limits: this could damage internal parts as well as cause damage to the housing and end caps.

• Do not use the actuator in corrosive environments with insufficient protection: this could damage internal and external parts.

• Do not disassemble individual spring cartridges; this may result in personal injury. If maintenance to springs is necessary, send them to Pfeiffer.

• Close and disconnect all air supply lines and make sure that pneumatic connections are vented during maintenance and when mounting the actuator onto the valve.



• Do not disassemble the actuator or remove the end caps while the actuator is pressurized.

• The actuators are designed to be used only on valves.

• Before mounting the actuator onto the valve, make sure that the direction of rotation and the position indicator are in the correct position.

• If the actuator is incorporated into a system or must be used in safety devices or circuits, the operator must ensure that the national and local safety laws and regulations are observed.

3.3 Operating media Dry or lubricated air or inert gases, provided that they are compatible with the actuator’s internal parts and lubricant used.

Notice: The operating media must have a dew point equal to -20 C (-4°F) or at least 10°C below the ambient temperature. The maximum particle size contained into the operating media must not exceed 30 μm

3.4 Supply pressure The maximum supply pressure is 10 bar (145 psi).

For double-acting and single-acting actuators, the operating pressure range is 2.5 bar (36 psi) to 10 bar (145 psi)..

3.5 Operating temperatures • Standard actuator: from -40°C (-40°F) to +80°C (+176°F). • Low-temperature version SLT with silicone O-rings: from -55°C (-67°F) to +80°C (+176°F). • High-temperature version HT with FPM O-rings: from -15°C (+5°F) to +150°C (+300°F).

Notice: For operation at low and high temperatures, special lubricant is required. Please contact Pfeiffer. A low or high temperature can slightly influence the torque of the actuator.

3.6 Response time Refer to the corresponding data sheets for the response times

Notice: The response time depends on several factors, e.g. supply pressure, supply capacity of the operating medium (pipe diameter, flow capacity of pneumatic accessories), valve type, valve torque and characteristics, applied safety factor, operating frequency and temperature etc.).

3.7 Rotation and travel limitation Refer to the data sheet for the travel of the rack-and-pinion actuators:

Standard actuator: 90° rotating angle, with end stop setting at 0° and 90°, +5/–15° adjustable

120° actuator: 120° rotating angle with end stop setting at 0° and 120°, +5/–15° adjustable

180° actuator: 180° rotating angle with end stop setting at 0° and 180°, +5/–15° adjustable

3.8 Lubrication The actuators are delivered ready lubricated for the service life of the actuator under normal operating conditions.

The standard lubricant is approved for the temperature range from -40°C (-40°F) to +80 C (+176°F).

For low (SLT) and high (HT) temperatures, a special lubricant is required. Contact Pfeiffer in this case.

Manufacturer Lubricant Tennex TS 2066/2

Table 1 - Lubricant recommendation

3.9 Coating and corrosion protection All actuators are protected against corrosion under normal weather conditions.

The different types of coating are described in the data sheet.

Notice: Before mounting the actuator in a corrosive environment, make sure that the correct type of corrosion protection has been chosen.

3.10 Function and direction of rotation The actuator is a pneumatic component for remote actuation of valves. For the actuation (90°, 120° or 180° rotation), there are different actuator versions:

• Direct mounting of a solenoid valve (5/2 or 5/3-way for double acting, 3/2-way for single acting) for connecting to ports 2 and 4.

• Hook-up (to ports 2 and 4) with a separate control unit.

• The standard direction of rotation is the clockwise direction to close a mounted valve. The counter clockwise direction for double-acting actuators is achieved by applying air pressure to port 2.

• For actuators marked “CCW”, the direction of rotation to close the valve is counter clockwise, the clockwise direction of rotation (CW) is achieved by applying air pressure to port 2.



3.11 Fail-safe position • Fail-close: clockwise (SRP only)

Fig. 3 - CW direction

The standard version of the Series 31a Actuators is mounted in the direction of the media flow.

When pressure is applied to port 2, the shaft turns from the start position CLOSED to the end position OPEN in the counter clockwise direction.

In case of pressure loss at port 2, the shaft turns clockwise to the start position CLOSED (SRP only). The actuator is delivered in the start position.

Notice: If mounted diagonal to the media flow, make sure that the position indicator is set correctly (turn 90°, see mounting instructions

• Fail-open: counter clockwise (SRP only)

Fig. 4 - CCW direction

If the shaft of the actuator is to turn in a clockwise direction when the valve opens, the pistons must be installed in the opposite way to the standard version (see Fig. 4).

The shaft turns from the start position OPEN to the end position CLOSED in clockwise direction (SRP only). The actuator is delivered in the start position.

4. ACTUATOR DESIGN UND MOUNTING INSTRUCTIONS

The BR 31a Actuator operates with a 90° (optionally 120° or 180°) angle of rotation to open and close different types of valves

Notice: All the necessary technical information to correctly mount the actuator onto a valve, e.g. dimensions, output torque, air volume, travel adjustment, response time, operating temperature, and direction of rotation are clearly stated on the nameplate, in the catalogue and/or data sheets. Read the technical information carefully before proceeding with mounting the actuator.

4.1 Principle of operation • Double-acting actuator (standard direction of rotation)

Fig. 5

Fig. 6

Air supplied to port 2 (Fig. 5) forces the pistons apart and towards the end positions. Air is vented at port 4. This is based on a clockwise direction of rotation.

Air supplied to port 4 (Fig. 6) forces the pistons together. Air is vented at port 2. This is based on a clockwise direction of rotation.

• Single-acting actuator (standard direction of rotation)

Fig. 7

Fig. 8

Air supplied to port 2 (Fig. 7) forces the pistons apart and towards the end positions. The springs are compressed. Air is vented at port 4. This is based on a clockwise direction of rotation.

A loss of air pressure at port 2 (Fig. 8) allows the pistons to return to the start position. Air is vented at port 2. This is based on a clockwise direction of rotation.



4.2 Important safety instructions

• For safety reasons, the actuator must not be pressurized when mounting the actuator onto the valve. Risk of injury.

• When connecting the air pressure to the actuator, it is important that all connecting parts are clean and free from dirt, especially the thread connections, pipe screw fittings, and gaskets.

• When fitting accessories to the actuator, make sure that the emergency operator control of the solenoid valve and the top end of the shaft are easily accessible for possible manual operation of the actuator.

• Before mounting the actuator onto the valve, make sure that the actuator is correctly aligned based on the direction of rotation required.

• For single-acting actuators, make sure dangerous and/or corrosive substances in the working environment cannot enter the spring chambers through the use of suitable filters and/or solenoid valves.

• Remove plugs from the actuator’s pneumatic connections during installation and operation. Protect any unused pneumatic connections of actuators.

4.3 Control and connections

Fig. 9 – Connections

4.4 Mounting accessories

Fig. 10 - Mounting accessories

• Mounting the solenoid valve:

Before mounting the solenoid valve, check that the actuator is in the initial position (closed position, pistons retracted). For standard mounting and clockwise rotation (closing): The groove on the shaft or position indicator ( 2 ) must be in the closed position, at a right angle to the longitudinal axis of the actuator.

Mount the solenoid valve ( 4 ) onto the actuator ( 3 ) using the suitable screws (see Table 2 for max. tightening torque).

• Mounting the limit switch box:

Fit the limit switch box and bracket ( 1 ) onto the actuator ( 3 ) using suitable screws (see Table 2 for max. tightening torque).

Screw M5 M6 M8 M10 M12 Tightening

torque in Nm

5 - 6 10 - 11 23 - 25 48 - 52 82 - 86

Screw M14 M16 M20 M24 M30 Tightening

torque in Nm

132 - 138 200 - 210 390 - 410 675 - 705 1340-1400

Table 2 - Tightening torque

4.5 Mounting the actuator onto valves

Fig. 11 - Mounting the actuator onto valves

Notice: Before mounting the actuator onto a valve, ensure that the actuator turns in the required direction of rotation and that the valve and actuator are correctly aligned with each other.

DANGER: When mounting a single-acting actuator (with spring) with a defined fail-safe position, ensure upon pneumatic or electric power failure that the direction of rotation is according to your application. (clockwise to close).



Mount the actuator ( 3 ) onto the valve ( 5 ). The actuator must be in the initial position (CLOSED position).

There are two different mounting versions:

• Direct mounting: Insert either the square drive, flat head drive or key drive of the valve shaft directly into the actuator shaft. Fasten them using the ISO flange onto the actuator. See Table 2 for max. tightening torque.

• Mounting using a bracket: Mount the bracket ( 6 ) onto the valve ( 5 ) and place the coupling ( 7 ) onto the actuator shaft.

Notice: Make sure that the position indicator of the coupling corresponds with the switching position of the valve.

Place the actuator onto the shaft and fasten the unit. See Table 2 for max. tightening torque.

4.6 Changing the direction of action/fail-safe position Notice: For the exact procedure for disassembly and assembly, refer to section 5 (maintenance and assembly instructions).

• Move the actuator to the fail-safe position to release the spring compression.

• Remove the screws ( 24 ) (see Fig. 14 and 16).

• Pull the position indicator ( 19 ) off the end of the shaft. If necessary, use a screwdriver to lever it off.

• Remove both adjusting screws ( 2 ) with washers ( 4 ) and lock nuts ( 3 ) (see Fig. 14 and 17).

• Remove the O-ring ( 11 ).

• Unscrew the screws ( 13 ) of the end caps (see Fig. 18).

• Remove end caps ( 22 und 23 ) from the housing.

• For single-acting actuators, remove the spring cartridges ( 17 ).

• Remove the gaskets ( 14 ) of the end caps.

• Clamp the housing ( 29 ) in a vise or similar. Turn the shaft ( 30 ) until the pistons ( 25 ) are released (see Fig. 14 and 19).

• Turn both pistons ( 25 ) in axial direction by 180° and reassemble.

• Press both pistons ( 25 ) simultaneously into the housing ( 29 ) until they engage and turn the housing until the travel end position is reached (see Fig. 25).

• Check that the pistons are in the end position. Turn the shaft 4° over the centre line (0°) (see Fig. 26).

• For single-acting actuators, insert the spring cartridges into the end caps (see Fig. 28).

• Insert the gasket ( 14 ) into the groove of both end caps.

• Mount the end caps on the housing ( 29 ).

• Tighten the screws ( 13 ) by hand. Observe the tightening sequence (see Fig. 29).

• Insert the adjusting screws ( 2 ), lock nuts ( 3 ), washers ( 4 ), and O-rings ( 11 ).

• Screw the adjusting screws ( 2 ) into the housing.

• Observe the end position setting.

• Place the position indicator ( 19 ) onto the shaft. Make sure that it is in the correct position (see Fig. 31).

• Tighten screw ( 24 ).

4.7 Alternative mounting options • Alternative mounting options

(in clockwise direction to open)

Fig. 12 - Clockwise direction to close

• Valve mounted with an actuator: (in clockwise direction to open)

Fig. 13 - Clockwise direction to open



5. MAINTENANCE AND ASSEMBLY INSTRUCTIONS

With the information stated below, PFIFFER provides the end user with all the required information necessary for maintenance.

Under normal operating conditions, the actuator requires only periodic checks to ensure proper functioning.

Spare part kits for maintenance are available to replace all seals and bearings. Maintenance may be necessary between 500,000 and 1,000,000 cycles, depending on the operating and/or environmental conditions.

Fig. 14 - Detailed drawing of Series 31a Actuator, version manufactured from 2010

Item Qty. Description Material Item Qty. Description Material 1 1 Cam (end position adjustment) GS400-15 16 2 O-ring (piston) NBR 2 2 Adjusting screw A2-70 17 4 - 12 Spring cartridge SiCr spring steel 3 2 Lock nut A2-70 18 1 Spring clip C 75 4 2 Washer A2 19 1 Position indicator PP + 30% GF 5 2 Bearing (piston back) Nylon 46 20 1 Shaft seal (bottom) NBR 6 1 Shaft bearing bushing (top) PA 46 21 1 Shaft seal (top) NBR 7 1 Shaft bearing bushing (bottom) PA 46 22 1 Right end cap GD-AlSi8.5Cu3.5Fe 8 2 Thrust bearing Nylon 46 23 1 Left end cap GD-AlSi8.5Cu3.5Fe 9 2 Plug (to seal air port) NBR 24 1 Screw (position indicator) A2-70

10 1 Thrust washer 1.4301 25 2 Piston GD-AlSi8.5Cu3.5Fe 11 2 O-ring (adjusting screw) NBR 26 1 Nameplate Polyester aluminium 12 2 Piston guide Nylon 66 + 30% GF 27 2 Nameplate (end cap) Polyester aluminium 13 8/12/16 Screw (end cap) A2-70 28 1 Spigot EN AW 6063 14 2 Gasket (end cap) NBR 29 1 Housing EN AW 6063 15 2 Bearing (piston head) POM 30 1 Shaft C22

Table 3 - Parts list



5.1 Fourth generation of rack-and-pinion actuators (version manufactured from 2000)

5.1.1 Screw sizes

Fig. 15 - Screw sizes (depending on actuator version)

Actuator DAP/SRP

d in mm

SW 1 in mm

SW 2 in mm

SW 3 in mm

SW 4 in mm

15 14 10 10 8 3 30 16 10 10 10 3 60 22 13 13 10 4 100 25 13 13 10 4 150 26 17 17 13 5 220 36 19 19 13 6 300 38 19 19 17 6 450 45 22 22 17 6 600 48 22 22 19 6 900 52 24 24 19 8

1200 58 30 30 22 10 2000 68 30 30 24 10 3000 80 36 36 22 12 4000 85 46 46 24 17 5000 90 46 46 24 17 10000 102 24 60 Allen 14 -

Table 4 - Dimensions

5.1.2 Disassembly of the actuator When the actuator must be disassembled for maintenance purposes, first remove the actuator from the valve.

WARNING: Before disassembly, it is important to check that the actuator is not pressurized and the compression is

relieved from the actuator springs (end position). Always use caution and check that ports 2 and 4 are vented and that all accessories are removed. Before disassembling a single-acting actuator, make sure that the actuator is in the start position and the pistons fully retracted.

• Removing the position indicator: (see Fig. 16)

◦ Remove screw ( 24 ). ◦ Lift position indicator ( 19 ) from shaft. If necessary, use a screwdriver to lever it off.

Fig. 16

Fig. 17

• Removing the adjusting screws: (actuator versions manufactured up to 2006) (see Fig. 14 and 17)

◦ Remove both adjusting screws ( 2 ) with the washers ( 4 ) and lock nuts ( 3 ). ◦ Remove O-rings ( 11 ) and replace them when replacing spare parts.



• Removing adjusting screws: (actuator versions manufactured from 2006) (see Fig. 14 and 17)

◦ Remove lock nuts ( 3 ) together with washers ( 4 ). ◦ Remove O-rings ( 11 ) and renew them when replacing spare parts ◦ Unthread both adjusting screws ( 2 ) and continue unscrewing until their stopping point. Before continuing with the final disassembly, remove the end caps ( 22 and 23 ) and the pistons ( 25 ) since the adjusting screws can only be removed from the inside of the housing. The instructions for dismantling the end caps and pistons are described below.

• Removing the end caps (see Fig. 18)

For sizes 900 to 3000, the end caps ( 22 and 23 ) are symmetric.

◦ Remove the screws ( 13 ) in the sequence a-b-c-d (see Fig. 14 and 18).

WARNING: When disassembling a single-acting actuator, loosen the screws of the end caps ( 22 and 23 ) in alternating sequence. If there is still noticeable force after 4 or 5 turns on all end cap screws, this may indicate a damaged spring cartridge, and any further disassembly should be discontinued. Further disassembly of the end caps may result in injury.

Return the actuator to PFEIFFER for further maintenance.

◦ For single-acting actuators, remove spring cartridge ( 17 ) (see Fig. 14). ◦ Remove gasket ( 14 ) and renew it when replacing spare parts.

• Removing the pistons: (see Fig. 14 and 19)

◦ Clamp the housing ( 29 ) in a vise or similar device. Turn the shaft ( 30 ) until the pistons ( 25 ) are accessible.

WARNING: Do not apply air pressure to remove the pistons from the housing (projectile impact).

◦ Carefully remove the piston O-rings ( 16 ) using a screwdriver. Remove the piston bearing ( 5 ) and piston bearing ( 15 ). ◦ Renew gasket ( 14 ) when replacing spare parts.

Fig. 18

Fig. 19

Fig. 20

• Removing the shaft (see Fig. 14 and 20)

◦ Use pliers for circlips to carefully remove the spring clip ( 18 ). Remove the thrust bearing ( 8 ) and thrust washer ( 10 ). ◦ Push down on the top of the shaft ( 30 ) until it is possible to remove the cam ( 1 ) and the internal thrust bearing ( 8 ). Pull the shaft ( 30 ) all the way out of the housing. If the shaft cannot be removed by hand, gently tap the top of the shaft with a plastic mallet to drive it out. ◦ Remove the top and bottom shaft bearings ( 6 and 7 ) as well as top and bottom shaft seals ( 20 and 21 ). ◦ Renew the bearing bushings ( 6 and 7 ), internal and external thrust bearing ( 8 ) as well as the seals ( 20 and 21 ) when replacing all the spare parts.



Notice: Thoroughly clean all dismantled parts as well as any parts that have not been renewed and check them for wear.

5.1.3 Actuator assembly Notice: Before assembly, ensure that all parts are clean and in perfect condition. Use the grease recommended by PFEIFFER (Table 1)

• Shaft assembly: ( see Fig. 14, 21, 22a and 22b )

◦ Mount the top and bottom bearing bushings ( 6 and 7 ) followed by the top and bottom shaft seals ( 20 and 21 ) onto the shaft. ◦ Apply grease to the top and bottom of the shaft as shown in Fig. 21. ◦ Guide the shaft ( 30 ) partially into the housing ( 29 ) ◦ Mount the cam ( 1 ) in the required position, in relation to the top and bottom position of the shaft as well in relation to the direction of rotation of the actuator (see Fig. 22). ◦ Place the internal thrust bearing ( 8 ) onto the shaft ( 30 ). Guide the shaft completely into the housing. ◦ Mount the external thrust bearing ( 8 ), thrust washer ( 10 ), and spring clip ( 18 ) (using pliers).

Fig. 21

Fig. 22a

Fig. 22b

Notice: For actuators from 2006: The adjusting screws ( 2 ) of this actuator version are mounted from the inside, into the actuator housing. This step must carried out before the piston and end caps are mounted.

• Mounting the pistons: ( see Fig. 14, 23, 24, 25a, 25b and 26 )

Fig. 23

◦ Mount the piston O-ring ( 16 ), piston bearing ( 5 ), and piston bearing ( 15 ). ◦ Apply grease to the bearing surface of the piston ( 25 ) inside the housing ( 29 ) and the piston rack teeth. ◦ Either clamp the top end of the shaft in a vise or hold the shaft stationary with the corresponding counterpart and place the housing ( 29 ) in a horizontal position (see Fig. 23).



Fig. 24

Fig. 25a

Fig. 25b

Fig. 26

◦ Make sure that the cam ( 1 ) is in the correct position (see Fig. 24). ◦ For the standard direction of rotation (clockwise to close), turn the housing ( 29 ) by 40° to 45° counter clockwise (view from below) or clockwise (view from top), depending on which way the shaft is held (see Fig 25a and Fig. 25b). ◦ Press both pistons ( 25 ) simultaneously into the housing ( 29 ) until the pistons are engaged and turn the housing clockwise or counter clockwise (see above) until the travel end is reached. ◦ Check the pistons in the end position and turn the shaft 4° over the middle line (0°) (see Fig. 26).

• Mounting the end caps: ( see Fig. 14, 27, 28 and 29 )

For actuator sizes 900 to 3000, the end caps ( 22 and 23 ) and spring cartridges ( 17 ) are symmetric.

◦ Bearing surface of the housing. ◦ For single-acting actuators, insert the correct number of spring cartridges (according to table) into the end caps (see Figs. 27 and 28). ◦ Fit gaskets ( 14 ) into the grooves of both end caps. ◦ Mount the end caps onto the housing ( 29 ), making sure that the gaskets are seated properly in the grooves. ◦ Tighten the screws ( 13 ) by hand. Tighten according to the sequence indicated in Fig. 29.

Fig. 27

Fig. 28

Fig. 29



Fig. 30

• Mounting the adjusting screws (actuator versions manufactured up to 2006) (see Fig. 14 and 30)

◦ Insert adjusting screws ( 2 ), lock nuts ( 3 ), washers ( 4 ) and O-rings ( 11 ). ◦ Screw the adjusting screws ( 2 ) into the housing.

• Mounting the adjusting screws (actuator versions manufactured from 2006) (see Fig. 14 and 30)

◦ Both adjusting screws ( 2 ) must be screwed into the housing before the pistons and end caps are mounted because they can only be inserted from the inside of the actuator. ◦ Insert the O-rings ( 11 ). ◦ Place the lock nuts ( 3 ) and washers ( 4 ) onto the adjusting screws.

• Adjusting the end position on the standard actuator (in clockwise direction to close)

◦ 0° (closed) end position adjustment for an actuator in the closed position: turn the screw ( 2 ) on the right (view from the top) either clockwise or counter clockwise until the required position is achieved. To secure this position, tighten the lock nut ( 4 ). ◦ 90° (open) end position adjustment for an actuator in the open position: turn the screw ( 2 ) on the left (view from the top) either clockwise or counter clockwise until the required position is achieved. To secure this position, tighten the lock nut ( 4 ).

Fig. 31

• Mounting the position indicator (see Fig. 31)

◦ Place the position indicator ( 19 ) on the shaft, making sure that it is in the correct position. ◦ Tighten screw ( 24 ).

The actuator assembly is now completed.

6. TRANSPORT UND LAGERUNG PFEIFFER Actuators must be carefully handled, transported and stored.

lf the actuators are not for immediate use, the following measures must be taken:

• Store the actuator in a closed room before it is installed. Protect it against damaging influences such as dirt or moisture.

• We recommend to leave the actuators in their original packaging.

• Do not remove the plastics plugs on the air supply ports 2 and 4.

7. ACTUATOR DESIGNATION AND NAMEPLATE

The actuator type, size, operating pressure, output torque, direction of rotation, fail-safe action, operating temperature, and type of attachment are determined by the actuator designation.

Keep the nameplate to ensure that the actuator can be identified at all times

Rack-and-pinion actuators have nameplates, which show the following information:



Fig. 32 - Name plates

• Unique identification (variable) 1 Order number 2 Position number in the order 3 Serial number (automatically assigned)

• Connection for accessories (fixed, depending on actuator size) 4 AA1 to AA5 (VDE/VDI actuator size 1 to 4)

• Pressure connection (fixed, depending on actuator size) 5 PC1 = G 1/8“ PC3 = G 3/8“ PC2 = G 1/4“ PC4 = G 1/2“

• Maximum permissible pressure (fixed) 6 Always 10 bar for BR 31a

• Principle of operation (variable) 7 Actuator function: Single-acting/double-acting 8 Direction of action: CW = Clockwise CCW = Counter clockwise 9 Schematic diagram of the spring function with the air connection. Schematic diagram of NAMUR interface with identification for ports 2 and 4

• Exact type designation (variable) 10 Series: BR 31a 11 Type: SRP / DAP 12 Actuator size: 6 to 10000 13 Spring designation: 2,5 to 6 (bar)

• Opening angle (fixed, depending on actuator size) 14 0-90° +5/-15°; 0-120°+/+5/-15°; 0-180° +5/-15°;

• Article number (variable) 15 Pfeiffer article number

• Version acc. to EN (fixed, depending on actuator size) Example: F07-Y-D-17 16 Flange F07 17 Spigot ( Y ) 18 Diagonal square drive ( D ) 19 Square drive, width across flats 17

• Torques (variable) 20 Specification of the actuator torque depending on supply pressure.

8. CUSTOMER INQUIRIES (please specify the following details)

Type of actuator: BR31a Type DAP or Type SRP

Size: 15, 30, 60, 100, 150, 220, 300, 450, 600, 900, 1200, 2000, 3000, 4000, 5000 or 10000

Number of springs: only with single-acting Type SRP

Fail-safe position: Clockwise or counter clockwise rotation of springs (only with single-acting Type SRP)

Supply pressure: .... bar

Operating range: Number of springs or nominal signal range

VDI/VDE bracket: To mount positioner or indicating devices

PD

F=19

9

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