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Pneumatic Problems

Problem

Possible error

Solution

Where to find

Actuator does not
react to electrical
control signal.

There is no supply
pressure at the
actuator.

Supply the right
pressure to the
actuator.

Section 2.3

Check that the actual
supply pressure is
higher than the
sizing pressure.

Actuator does not
react good to
electrical control
signal.

There is sufficient
supply air pressure but
insufficient supply air
capacity.

Take care the supply air
tubing has the right
dimensions.

Section 4.6

Supply pressure too
low, causing pilot
operated solenoid valve
to fail.

Check that supply
pressure at the  actuator
and solenoid  is
sufficient to operate  the
actuator.

Section 2.3

Check that the actual
supply pressure is
higher than the
sizing pressure.

Solenoid valve is not
mounted properly.

Check the solenoid
valve mounting.

Instructions shipped
with the solenoid

Speed control throttle
(if present) blocks air
flow.

Turn the speed control
more open.

Instructions shipped
with the speed
control valve.

Manual override
(if present) on the
Solenoid Valve is
locked.

Unlock manual override
on the solenoid valve.

Instructions
shipped with the
manual override.

Air leakage
between
actuator and
solenoid valve.

Sealing between
solenoid valve and
actuator is not
mounted air tight.

Reassemble solenoid
valve taking care, that
all seals are in place.

Instructions shipped
with the solenoid
valve.

Double-acting
actuator will only
move to “open”
position.

Actuator has wrong
solenoid valve
configuration.

Mount a solenoid valve
suitable for double-
acting actuators

(5/2 function).

Instructions shipped
with the solenoid
valve.

Check that conversion o-
ring on solenoids, that
have both 3/2 and 5/2
functions, is in the right
position.

Instructions shipped
with the solenoid
valve.

Leakage notice
on the actuator.

Seals on the limit stops
screws are not air tight.

Turn the lock nut of the
bolts tighter; until the
leakage stops.

Section 9.6

Seals on the end caps
are not air tight.

Disassemble the end
caps, replace O-rings
and reassemble.

Consider to replace all
O-ring seals and
bearings.

Section 9.6 or Section 6

Seals on the pinion top
and bottom are not air
tight.

Disassemble the
complete actuator,
replace O-rings and
reassemble. Consider
to replace all O-ring
seals and bearings.

Section 9.6 or Section 6

Содержание A210 Series

Страница 1: ...PROVAL A210 211 212 213 Series Rack and Pinion Pneumatic Actuators Installation Operation and Maintenance Manual...

Страница 2: ...ailure Modes 7 Valve Rotation 7 Position After Failure 8 Principles of Operation 8 Solenoid Valve 8 Ingress Protection IP rating 9 Double Acting Actuators 10 Spring Return Actuators 11 Actuator Assemb...

Страница 3: ...ly and settings of the limit stops 34 Reassembly of the end caps 34 Double Acting actuators 34 Spring Return actuators 36 Basic function and Air Leak Test 38 Section 10 Troubleshooting MechanicalProbl...

Страница 4: ...g or dis assembly the actuator consults the relevant sections of this manual Installation Operation and Maintenance Reference Documents Before you start read the following documents All chapters in th...

Страница 5: ...a clean dry warehouse free from excessive vibration and rapid temperature changes Prevent moisture or dirt from entering the actuator Plug or seal both air connection ports Failure to follow the abov...

Страница 6: ...enoid switchbox or positioner mounting VDI VDE3845 NAMUR The valve interface is equipped with an insert in the pinion bottom that allows both ISO5211 or DIN3337 mounting The springs in the spring retu...

Страница 7: ...barg 87 to120 psig with maximum spring set 3to8 3 barg 43 5 to120 psig reducedspringquantity Table 2 Operating Media Actuator Type Operating Media Double Acting and Single Acting Air dry or lubricated...

Страница 8: ...pinion to rotate counter clockwise while air is being exhausted through port A Air supplied through port A forces the piston away from each other causing the pinions to rotate clockwise while air is...

Страница 9: ...ring Type N A Double Acting A 5 B 6 C 7 D 8 E 9 F 10 G 11 H 12 Series 0 A210 1 A211 2 A212 3 A213 4 A214 Stem Connection Size 09 9mm 11 11mm 14 14mm 17 17mm 22 22mm 27 27mm 36 36mm 46 46mm xx Upon Req...

Страница 10: ...Rotation For the following paragraphs we assume that valves rotate as indicated in figure 3 Figure 3 Normalvalverotation The valve is closed after a clockwise rotation The valve is open after a counte...

Страница 11: ...below Table 5 Position After Failure Principles of Operation Solenoid Valve All actuators can be either piped with solid or flexible tubing with the solenoid valve mounted remotely from the actuator o...

Страница 12: ...53 PA300 31 6 16 54 15 14 9 Operating time is average with actuator under load and solenoid valve fitted Test conditions Solenoid with flow capacity 0 6 m3 hr Pipe diameter 6mm Medium clean air Suppl...

Страница 13: ...ing Applying supply pressure to port A will move the pistons outward to the Open position of the valve Applying supply pressure to port B will move the pistons inward to the Close position of the valv...

Страница 14: ...plying supply pressure to port A will move the pistons outwards to the Open position of the valve Venting the supply pressure from port A will cause the springs to move the pistons inwardsto the Close...

Страница 15: ...e C Standard Counterclockwise to Open Reverse Clockwise to Open Fail to Close Fail to Open B A A B Pinion Pistons B A B A Pistons A Rotation when central air chamber is pressurized B Rotation when end...

Страница 16: ...and screwdrivers For the removal of inserts a special extractor tool can be supplied on request During assembly to the valve do not hit with hammer on pinion top This can damage the pinion top washer...

Страница 17: ...Be sure that the insert is mounted at 90 or 45 It is possible to mount the insert turned 22 5 This way the valve will not open or close the right way Figure 10 InsertdriveInstallation Parallel square...

Страница 18: ...9 2 105 125 F07 inner pattern M8 10 5 12 5 5 16 18 7 7 9 2 F10 outer pattern M10 21 0 24 5 3 8 16 15 5 18 1 140 160 F10 inner pattern M10 21 0 24 5 3 8 16 15 5 18 1 F12 outer pattern M12 34 5 43 0 1 2...

Страница 19: ...supply sufficient flow of air supply to the actuator the following tubing sizes are recommended Table9 Tubing Sizes Actuatorsize Runs up to Runs over to 1 2 meters 4 feet 1 2 meters 4 feet 32 40 52 6...

Страница 20: ...ment stops for adjusting accurately the stroke of the actuator valve assembly in open and closed position The smallest actuator size 32 have limit stops on end caps The factory setting of the stroke i...

Страница 21: ...e 14 Turn the closed stop clockwise to reduce or counterclockwise to increase the travel Consult chapter 5 1 3 angular displacement of the pinion to define how far the limit stop must be turned in or...

Страница 22: ...ot repeat steps 1 to 5 Remove air supply For adjusting the open position repeat steps 1 to 6 but now for the open position and open stop 1 Table10 Limit stopdimensions Actuatorsize Thread Bolt Wrench...

Страница 23: ...g with the rules and regulations of the country of final installation Visually check the entire actuator as well as the control system where foreseen Ensure there are no leaks on the actuator parts un...

Страница 24: ...kits containing all necessary spare parts like seals bearings grease and instructions can be obtained through authorized PROVAL distributors Service Kits All soft seals bearings and nonreusable parts...

Страница 25: ...y ball valve or plug valve assemblies from a pipe system isolate the piping system on which the Actuator is installed and relieve any media pressure that may be trapped in the valve cavities before re...

Страница 26: ...cal wirings of the switch box Disconnect the electrical wiring of the solenoid valve Remove the bolts and nuts from the valve flange Remove the bracket from the actuator Remove the switch box and sole...

Страница 27: ...gs in a compressed state Follow these instructions to release the spring force safely Normally the end caps of spring return actuators should be free of the spring load after 10 full turns crosswise r...

Страница 28: ...Loosen the screws 26 of the end caps 25 Remove the o ring 24 and B port seal 14 Discard these parts Figure 17 Double Acting End Caps Removal The above end caps 2 are for all Actuator sizes except 32 E...

Страница 29: ...reduces the screw out length of the end cap screws Important Apply a strong sudden rotational and downward force to loosen all the end cap screws 26 for maximum 1 4 turn Uniformly loosen the screws 2...

Страница 30: ...limit stop o rings 15 Discard the o rings Figure 20 Limit Stop Removal RemovingPistons Use a wrench and turn the pinion counterclockwise 180 until the pistons 19 comes out of the body Remove the pisto...

Страница 31: ...d the pinion bearings 9 12 Discard all of these parts Figure 22 PinionRemoval Table 12 Recommended circlip pliers according DIN 5254 or equal for shaft circlips Actuatorsize Pliers according DIN 5254...

Страница 32: ...nents refer to the exploded view in section 11 In case of maintenance discard all used soft parts like O ring seals guide bands and wear strips and circlip and replace them with the parts as supplied...

Страница 33: ...ghtfilm C Top pinion bore Lightfilm D Bottom pinion bore Lightfilm Piston Parts E O ring bearing groove Lightfilm F Rack teeth Half the teeth depth full with grease G Piston bearing Light film on outs...

Страница 34: ...st washers 4 5 and mount the circlip 3 on the pinion top using circlip pliers Install the new circlip onto its mating groove on the top shaft extension and with the non sharp edge B towards the housin...

Страница 35: ...For standard or Spring to Close Assembly Code C For reverse or Spring to Open Assembly Code W Slightly push the pinion inward to engage with the pinion Ensure that smooth movement and 90 degree opera...

Страница 36: ...pinion top Assemblycode Assembly code 8 Standard Spring to Close Reverse Spring to Open A Position of cam B Position of slot and in dot in pinion C Final position of pinion dot Note When the pistons a...

Страница 37: ...avel stop until it comes into contact with the pinion stop face Move the pistons outward until the slot in the top of the pinion is in line with the centerline of the housing Screw in the left hand tr...

Страница 38: ...Torque Nm Torque lbf ft Target Min Max Target Min Max 32 M4 Allen key SW3 1 1 0 8 1 3 0 8 0 6 1 0 40 M5 SW4 2 0 1 6 3 0 1 5 1 2 2 2 52 M6 SW5 3 3 2 6 5 1 2 4 1 9 3 8 63 M6 SW5 3 3 2 6 5 1 2 4 1 9 3 8...

Страница 39: ...replaced in their identical position from where they were removed Check below figure to see where to place the spring cartridges in case of spring set conversion Before assembling the spring cartridge...

Страница 40: ...in place during assembly Place the spring cartridges in actuator as per required spring set see Figure 29 Tighten each end cap screw in small equal turns and in the sequence as per Figure 28 Refer to...

Страница 41: ...1 pinion bottom 2 the end caps 3 and limit stops 4 In case of leakage around The limit stop bolts and or the spring package bolt at spring return models Turn the lock nut of the bolts tighter until t...

Страница 42: ...sition Remark Rotate insert to one cam 22 5 Section4 5 Pressure to low Apply pressure as per sizing Sizing is wrong Check valve torque data with actuator torque data Pinion is mounted in the wrong pos...

Страница 43: ...Solenoid Valve is locked Unlock manual override on the solenoid valve Instructions shipped with the manual override Air leakage between actuator and solenoid valve Sealing between solenoid valve and...

Страница 44: ...tions of the control or feedback accessories The power supply voltage is not is not the same as the voltage of the applicable solenoid Connect the right power supply voltage Instructions of the soleno...

Страница 45: ...aring Engineering Plastics 10 1 Pinion Upper O Ring NBR 11 1 Pinion Alloy Steel 12 1 Pinion Lower Bearing NBR 13 1 Pinion Lower O Ring Engineering Plastics 14 2 Sealing Plug NBR 15 2 Adjustment Screw...

Страница 46: ...y to personnel or damage to material Spring load relief In case of an actuator valve assembly stuck in mid position leave the actuator on the valve and or mounting bracket during this procedure Figure...

Страница 47: ...2 4 9 9 0 105 M8 SW6 8 4 6 7 12 2 6 2 4 9 9 0 125 M10 SW8 15 3 12 2 24 8 11 3 9 0 18 3 140 M10 SW8 15 3 12 2 24 8 11 3 9 0 18 3 160 M12 SW 10 190 210 240 270 300 Table B 2 Bottom flange ActuatorSize...

Страница 48: ...size mm size mm 32 M5 20 stay bolt 8 40 M6 25 10 52 M6 30 10 63 M6 30 10 75 M 8 35 13 83 M 8 45 13 92 M 8 40 13 105 M 8 40 13 125 M 10 50 17 140 M 12 60 19 160 M 16 70 24 190 210 240 270 300 Default d...

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