Pneumatic actuator

Pneumatic actuator
USE AND MAINTENANCE MANUAL
PNEUMATIC ACTUATORS
SERIES 82
Note: the numbers in parenthesis refer to the components in the exploded view of page 3 for mod. 52-230 and page 4 for mod. 270-330.
VALBIA supplies a range of pneumatic rotary actuators, RACK and PINION TYPE, quarter turn, in double acting or spring return execution.
CAUTION:
Remove from the actuator all dust that may cause sparks; clean periodically to prevent dusting on the actuator.
Do not hit the actuators with metallic objects, as they may give off sparks.
TABLE OF CONTENTS :
0. WARNING
1. SERVICE CONDITIONS
2. FUNCTION
3. STORAGE
4. MAINTENANCE
5. EXPLODED VIEW
6. DISASSEMBLING
7. ASSEMBLING
8. ADJUSTMENT
0 Warning




The installation and the maintenance of pneumatic actuators must be assigned to trained and qualified personnel.
The use of the actuators out of the allowed temperature and pressure ranges may cause damage to the internal and external components.
Prior to any installation and maintenance of the actuator, close and disconnect any kind of power or air supply.
Disassembling the spring return type actuators (springs inside) may cause severe injuries. The maintenance must be assigned to qualified expert
personnel in full observance of the instruction described at paragraph 5 Otherwise the actuator has to be returned to VALBIA .
1 Service conditions






AIR SUPPLY: dehumidified or lubricated air (standard). Other non corrosive gases or fluids are a possible alternative option, if compatible to the
materials of the actuator components (internal parts and lubricant). The maximum particle size must not exceed 40µm (ISO 8573 Part1, Class5).
In order to prevent water condensation and/or solidification (ice, when actuator work below 0°C), the operating medium must have a dew point
equal to -20°C or, at leas 10°C below the ambient temperature (ISO 8573 Part1, Class3).
WORKING PRESSURE : min. 2,5 bar - max 8 bar
TEMPERATURE : min. -20°C to max. + 85 °C - standard execution - NBR gaskets
min. -20°C to max. + 150°C - HIGH temperature execution - FKM ( Viton ) gaskets
min. -40°C to max. + 85 °C - LOW temperature execution - silicone gaskets
Warning: in case of high or low temp. executions a special grease is used as lubricant and such conditions may alter the
torque generated by the actuator. For further information please refer to VALBIA
ROTATION: half turn, 0°- 90° adjustable 5° in both end positions (double adjustment)..
LUBRICATION: The actuators are equipped with filled-for-life lubrication for normal service conditions.
OPERATING TIME : please refer to the technical documentation. The operating time depends on various parameters such as air supply
pressure, capacity of the air supply installation (size of piping, control equipment), type of valve and fluid, selected safety factor, temperature etc.
VALBIA S.r.l. – 25065 Lumezzane (BS) Italy
tel 0308969411 – fax 0308610014
e-mail: [email protected] – http//www.bonomi.it
Pag. 1 di 9
Rev.2 – Marzo 2016 – Manuale VB S82 en New-rev_02
USE AND MAINTENANCE MANUAL
PNEUMATIC ACTUATORS
SERIES 82
2 Function
The air pressure acts on the surface of the pistons (12) causing their alternate movement, which is converted into rotation (standard 90°) of the pinion
(2). As a result the pneumatic actuators can be used for remote operation of valves.
2.1
Double acting
CLOSED
OPEN
12
F
12
F
2
F1
P1 ( IN AIR )
Supplying air through port P1, the external chambers fill up and the
pressure on the surface of the pistons (11) creates a force (F) pushing
them close to the pinion, generating a torque with CLOCKWISE
rotation. (top view)
2.2
F1
2
P2 ( IN AIR )
When the pistons (12) are close to the pinion, supplying air through
port P2 the internal chamber fills up and the pressure on the surface of
the pistons creates a force (F1) pushing them away from each other,
generating a torque with COUNTERCLOCKWISE rotation (top view).
Spring return
OPEN
F1
CLOSED
12
F1
12
M
Fm
2
2
P2 ( IN AIR )
Supplying air through port P2, the internal chamber fills up and the
action of the pressure on the surface of the pistons (12) creates a force
(F1) pushing them away from each other, generating a torque with
COUNTERCLOCKWISE rotation. (top view)
The springs (M) are now compressed. Terminating the supply of air
through port P2 the springs (M) start extending and apply a force
(Fm) pushing the pistons (12) close to the pinion, generating a torque
with CLOCKWISE rotation. (top view).
3 Storage
It is recommended that the actuator be kept in clean and dry place. The state of preservation during the storage time is improved if the actuator is
preserved in the original packing box.
For a long storage period we recommend to effect periodically one complete cycling by pressurizing the chambers.
The actuators have two air ports which should be plugged during storage to avoid any intrusion
4 Maintenance
The maintenance of the actuator is permitted to Valbia personnel or to properly trained personnel. Valbia supplies the spare parts (gaskets, guide
elements) in appropriate kits (except for lubricating grease). The maintenance may become necessary between 500.000 and 1.000.000 cycles,
according to the local service conditions.
VALBIA S.r.l. – 25065 Lumezzane (BS) Italy
tel 0308969411 – fax 0308610014
e-mail: [email protected] – http//www.bonomi.it
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Rev.2 – Marzo 2016 – Manuale VB S82 en New-rev_02
USE AND MAINTENANCE MANUAL
PNEUMATIC ACTUATORS
SERIES 82
5 Exploded view
5.1
Pos.
1
2
*3
*4
*5
*6
7
8
*9
10
**11
12
* 13
* 14
* 15
16
17
18
***19
20
21
22
23
24
25
26
Exploded view for actuators from mod. 52 to mod. 230
DESCRIZIONE / Description
MATERIALE / Material
Corpo - Body
Pignone antiespulsione - Anti-blowout pinion
O-ring
Anello distanziale - spacer ring
O-ring
Alluminio estruso - Extruded aluminium
Acciaio - Steel
NBR
POM
NBR
O-ring
Camma - Cam
Anello camma - spacer
Anello sotto Seeger - spacer
Rondella - washer
Seeger - snap ring
Pistone - Piston
O-ring
NBR
Acciaio inox - Stainless steel
POM
POM
Acciaio inox - Stainless steel
Acciaio - Steel
Alluminio pressofuso - Die cast aluminium
NBR
Anello antifrizione - Antifriction ring
Pattino reggispinta - thrust block
Dado di bloccaggio reg. - Stop bolt retaining nut
Vite di regolazione - Stop bolt
Molla esterna - External spring
Molla centrale-central spring
Molla interna - internal spring
Tappo sinistro - Left end cap
POM
POM
Acciaio inox - Stainless steel
Acciaio inox - Stainless steel
Acciaio - Steel
Acciaio - Steel
Acciaio - Steel
Alluminio pressofuso - Die cast aluminium
Tappo destro - Right end cap
Guarnizioni Tappi - End cap seats
O-ring
Vite di serraggio tappi - End cap fixing screw
Alluminio pressofuso - Die cast aluminium
NBR
NBR
Acciaio inox - Stainless steel
Gomma termoplastica TPE-Thermoplastic
rubber TPE
Indicatore di posizione -Position indicator
TRATTAMENTO /
Treatment
Ossidato duro - Hard anodized
Nichelato - Nickel plated
Nichelato - Nickel plated
Verniciata
Verniciata
Verniciata
Verniciato
-
Painted
Painted
Painted
Painted
Verniciato - Painted
Q.TA’
DA
Q.TA’
SR
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
1
1
1
1
1
1
2
2
2
2 [4]
2
2
0
0
0
1
2
2 [4]
2
2
Vedi
set
molla
1
1
2
2
8
1
2
2
8
1
1
[x] mod. 140-160-180-200-230
*
Part subject to wear
** Reinforced series DIN471 - UNI 7436
*** mod. 160-180-200
VALBIA S.r.l. – 25065 Lumezzane (BS) Italy
tel 0308969411 – fax 0308610014
e-mail: [email protected] – http//www.bonomi.it
Pag. 3 di 9
Rev.2 – Marzo 2016 – Manuale VB S82 en New-rev_02
USE AND MAINTENANCE MANUAL
PNEUMATIC ACTUATORS
5.2
Pos.
1
2
*3
*4
*5
*6
7
8
9
10
11
12
13
14
15
* 16
* 17
18
19
* 20
* 21
22
23
24
25
SERIES 82
Exploded view mod. 270 and 330
DESCRIZIONE Description
Corpo - Body
Pignone antiespulsione - Anti-blowout pinion
O-ring
O-ring
Anello antifrizione - Antifriction ring
Anello antifrizione - Antifriction ring
Piastra - Plate
Rondella - Washer
Dado di bloccaggio - Stop bolt retaining nut
Vite di regolazione - Stop crew
Viti di fissaggio - Fixing screws
Pistone - Piston
Molla precompressa - Precompressed spring
Vite di serraggio tappi - End cap fixing screw
Tappo - End cap
Pattino reggispinta - Thrust block
Anello distanziale - Spacer ring
Rondella pignone - Pinion washer
Seeger - Snap ring
O-ring
Anello antifrizione - Antifriction ring
O-ring
O-ring
Chiavetta antiespulsione - Anti blowout key
Indicatore di posizione - Position indicator
MATERIALE Material
Alluminio estruso - Extruded aluminium
Acciaio - Steel
NBR
NBR
PTFE 15% grafite - PTFE 15% graphite
PTFE
GGG40
Acciaio inox - Stainless steel
Acciaio inox - Stainless steel
Acciaio - Steel
Acciaio inox - Stainless steel
Alluminio pressofuso - Die cast aluminium
Acciaio - Steel
Acciaio inox - Stainless steel
Alluminio pressofuso - Die cast aluminium
POM
POM
Acciaio inox - Stainless steel
Acciaio - Steel
NBR
PTFE 15% grafite - PTFE 15% graphite
NBR
NBR
POM
Gomma termoplastica TPE
Thermoplastic rubber TPE
TRATTAMENTO Treatment
Ossidato duro - Hard anodized
Nichelato - Nickel plated
Verniciato - Painted
Zincato - Zinc plated
Verniciata - Painted
Verniciato - Painted
Nichelato - Nickel plated
Q.TA’
DA
Q.TA’
SR
1
1
1
1
1
1
1
1
1
1
1
1
1
1
4
8
2
2
2
2
4 [8]
4 [8]
2
2
Vedi set molle
12 [16] 12 [16]
2
2
6 [8]
6 [8]
1
1
1
1
1
1
2
2
2
2
2
2
4 [2]
4 [2]
2
2
1
1
[x] only for mod.330
* Part subject to wear
VALBIA S.r.l. – 25065 Lumezzane (BS) Italy
tel 0308969411 – fax 0308610014
e-mail: [email protected] – http//www.bonomi.it
Pag. 4 di 9
Rev.2 – Marzo 2016 – Manuale VB S82 en New-rev_02
USE AND MAINTENANCE MANUAL
PNEUMATIC ACTUATORS
SERIES 82
6 Disassembling
6.1
Disassembling mod. 52 to mod. 230
CAUTION : It is recommended to use suitable safety equipment during the handling for maintenance because of heavy and/or bulky parts.
1.
2.
3.
4.
5.
6.
Disconnect pneumatic and electric supplies from the actuator;
After having disconnected their power supply, remove carefully any accessory attached to the actuator, preventing any damage during the
handling;
Detach the actuator from the valve taking carefully note of all references that may be helpful for the attachment after maintenance;
Place the actuator on a support with a square of the same size of the pinion ( 2 ) so as to easily execute the below listed operation (see Fig. 1):
Before disassembling the actuator check from the label on the body whether it is a double acting (DA) or spring return (SR ) type;
For DOUBLE ACTING ACTUATOR : Unscrew in crossed sequence the screws ( 25 ) for fastening the end caps ( 21-22), see Fig. 2 ;
For SPRING RETURN ACTUATOR : Unscrew GRADUALLY in crossed sequence the screws (25) for fastening the end caps ( 21-22), s. fig. 2;
Note: the screws are long enough to hold the springs even if extended;
7. Loosen nuts ( 16 ) and unscrew completely screws ( 17 ) see Fig. 3 ;
8. Rotate the cylinder ( 1 ) in CLOCKWISE direction (top view) holding the pinion ( 2 ) so as to release the rack of the pistons ( 12 ) from the pinion
( 2 ) and to push the pistons towards to the cylinder ends. Now both pistons ( 12 ) can be removed see Fig. 4.
NOTE: Do not use compressed air to remove the pistons ( 12 ) from the cylinder ( 1 );
9. Remove the position indicator ( 26 ) from the pinion ( 2 ), snap ring ( 11 ), the washer ( 10 ), the spacer ( 9 ) and the O-ring ( 6 ) see Fig. 5 ;
10. Extract the pinion ( 2 ) from the cylinder ( 1 ) by pushing it down, with special caution for all seatings, see Fig. 5 (if necessary use a rubber
hammer);
11. Tilt the cylinder ( 1 ) and let the cam ( 7 ) slide out, see Fig. 5.
VALBIA S.r.l. – 25065 Lumezzane (BS) Italy
tel 0308969411 – fax 0308610014
e-mail: [email protected] – http//www.bonomi.it
Pag. 5 di 9
Rev.2 – Marzo 2016 – Manuale VB S82 en New-rev_02
USE AND MAINTENANCE MANUAL
PNEUMATIC ACTUATORS
6.2
SERIES 82
Disassembling mod. 270 and mod. 330
CAUTION : It is recommended to use suitable safety equipment during the handling for maintenance because of heavy and/or bulky parts.
1.
2.
Disconnect pneumatic and electric supplies from the actuator;
After having disconnected their power supply, remove carefully any accessory attached to the actuator, preventing any damage during the
handling;
Detach the actuator from the valve taking carefully note of all references that may be helpful for the attachment after maintenance;
Place the actuator on a support with a square of the same size of the pinion ( 2 ) so as to easily execute the below listed operation (see Fig. 6):
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
Before disassembling the actuator check from the label on the body whether it is a double acting (DA) or spring return (SR ) type;
For DOUBLE ACTING ACTUATOR : Unscrew in crossed sequence the screws ( 14 ) for fastening the end caps ( 15 ), see Fig. 7 ;
For SPRING RETURN ACTUATOR : Unscrew GRADUALLY in crossed sequence the screws ( 14 ) for fastening the end caps ( 15 ), s. Fig. 7;
Note: the screws are long enough to hold the pre-compressed springs ( 13 ) even if extended;
Loosen nuts ( 9 ) and unscrew completely screws ( 10 ) see Fig. 8;
Rotate the cylinder ( 1 ) in clockwise direction (top view) holding the pinion ( 2 ) so as to release the rack of the pistons ( 12 ) from the pinion ( 2 )
and to push the pistons towards the cylinder ends. Now both pistons ( 12 ) can be removed, see Fig. 9.
NOTE: Do not use compressed air to remove the pistons ( 12 ) from the cylinder ( 1 )
Lay the actuator on one base of its cylinder ( 1 ) and unscrew the screws ( 11 ) in crossed sequence to remove the plate ( 7 ) see Fig. 10 ;
Place the actuator on the support again;
Remove the position indicator ( 26 ) from the pinion ( 2 ), the snap ring ( 19 ), the washer ( 18 ), the spacer ( 17 ) see Fig. 11 ;
Gradually raise the cylinder ( 1 ), make sure that the pinion ( 2 ) gets extracted with special caution for all seatings (if necessary use a rubber
hammer), see Fig. 12 ;
VALBIA S.r.l. – 25065 Lumezzane (BS) Italy
tel 0308969411 – fax 0308610014
e-mail: [email protected] – http//www.bonomi.it
Pag. 6 di 9
Rev.2 – Marzo 2016 – Manuale VB S82 en New-rev_02
USE AND MAINTENANCE MANUAL
PNEUMATIC ACTUATORS
SERIES 82
7 Assembling
7.1
Assembling mod.52 to mod.230
CAUTION : It is recommended to use suitable safety equipment during the handling for maintenance because of heavy and/or bulky parts.
1.
2.
3.
Before assembling clean all components preferably with degreaser.
Place the pinion ( 2 ) on a support with a square of the same size of the female attachment. Make sure that the pinion is provided with
lower O-ring ( 3 ), spacer ( 4 ) and upper O-ring ( 5 ). Lubricate the O-rings (see arrows fig. 13) ;
The recommended lubricating grease is “” HELIOS SYNTH 1 EP “
Screw down one adjustment screw ( 17 ) with nut ( 16 ) in the right adjustment hole of the cylinder ( 1 ) and let the cam ( 7 ) with ring( 8 ) slide
down on the guiding rail on the cylinder ( 1 ) (see detail. A Fig.14) until it stops against the screw;
4.
Lay the cylinder ( 1 ) down on the pinion ( 2 ) holding it with the NAMUR surface rotated by approx. 50° to the upper slot of the pinion, see
fig. 15 ;
5. Fit on the pinion ( 2 ) the O-ring ( 6 ), the spacer ( 9 ), the washer ( 10 ), the snap ring ( 11 ) and the position indicator ( 26 ), see Fig. 16 ;
6. Grease the internal chamber of the cylinder ( 1 ) and both pistons ( 12 ) provided with O-ring ( 13 ) antifriction ring ( 14 ) and thrust block ( 15 ) The recommended lubricating grease is “HELIOS SYNTH 1 EP “.
7. For the standard execution (clockwise rotation opens) press the pistons ( 12 ) into the cylinder ( 1 ) while turning the cylinder ( 1 ) in
counterclockwise direction ( top view) until the pistons come into contact, see fig. 17 ;
8. Screw down the second adjustment screw ( 17 ) with nut ( 16 ) in the cylinder ( 1 ) and ad just the travel stop , s. paragraph 8;
9. For DOUBLE ACTING ACTUATOR: Mount the end cap ( 21-22 ) with O-ring ( 24 ) and gasket ( 23 ) on the cylinder and screw down in
crossed sequence the screws ( 25 ), see fig. 18. Repeat the operation on the opposite side.
For SPRING RETURN ACTUATOR: Introduce the spring set ( 18-19-20 ) into the cylinder ( 1 ) and center them on the piston ( 12 ), then
mount the caps ( 21-22 ) with O-ring ( 24 ) and gaskets ( 23 ) centred on the springs ( 18-19-20 ). Note:
the pistons have to be in CLOSED position. Screw partially down the screws ( 25 ) in crossed
sequence compressing the springs uniformly until the cap is completely closed, see fig. 18. Repeat the
operation on the opposite side;
10. Execute some test cycles to check the correct functioning of the actuator before installing it.
VALBIA S.r.l. – 25065 Lumezzane (BS) Italy
tel 0308969411 – fax 0308610014
e-mail: [email protected] – http//www.bonomi.it
Pag. 7 di 9
Rev.2 – Marzo 2016 – Manuale VB S82 en New-rev_02
USE AND MAINTENANCE MANUAL
PNEUMATIC ACTUATORS
7.2
SERIES 82
Assembling mod. 270 and mod. 330
CAUTION : It is recommended to use suitable safety equipment during the handling for maintenance because of heavy and/or bulky parts.
1.
2.
Before assembling clean all components preferably with degreaser.
Place the pinion ( 2 ) on a support with a square of the same size of the female attachment. Make sure that the pinion is provided with
lower O-ring ( 3 ), spacer ( 5 ) and upper O-ring ( 4 ). Lubricate the O-rings (see arrows fig. 19);
The recommended lubricating grease is “ HELIOS SYNTH 1 EP “
3.
4.
5.
Lay the cylinder ( 1 ) down on the pinion ( 2 ), see fig. 20 ;
Fit on the pinion ( 2 ) the spacer ( 17 ), the washer ( 18 ), the snap ring ( 19 ) and the position indicator ( 26 ), see Fig. 21 ;
Remove the cylinder with pinion from the support and lay it on one base to mount the plate ( 7 ) with antifriction ring ( 6 ), (holes for adjusting
screws on the same side as the NAMUR attachments) then screw down the fastening screws ( 11 ) with washer ( 8 ) in crossed sequence, see
Fig. 22, and place the cylinder on the support again;
6. Grease the internal chamber of the cylinder ( 1 ) and both pistons ( 12 ) provided with O-ring ( 20 ) antifriction ring ( 21 ) anti blowout key ( 24 )
and thrust block ( 16 )- The recommended lubricating grease is “HELIOS SYNTH 1 EP “.
7. Rotate the cylinder ( 1 ) by approx. 50° to the upper slot of the pinion, see fig. 23;
8. For the standard execution (clockwise rotation opens) press the pistons ( 12 ) into the cylinder ( 1 ) while turning the cylinder ( 1 ) in
counterclockwise direction ( top view) until the pistons come into contact, see fig. 23, 24;
9. Introduce the adjustment screws ( 10 ) wit nut ( 9 ) into the plate ( 7 ) to ad just the travel stop, see Fig.25 and paragraph 8 ;
10. For DOUBLE ACTING ACTUATOR: Mount the end cap ( 15 ) with O-ring ( 22-23 ) and gasket ( 23 ) on the cylinder and screw down in
crossed sequence the screws ( 25 ), see fig. 18. Repeat the operation on the opposite side.
For SPRING RETURN ACTUATOR: Introduce the spring set ( 13 ) into the cylinder ( 1 ) and center them on the piston ( 12 ), then mount the
caps ( 15 ) with O-ring ( 22-23 ) centred on the springs ( 13 ). Note: the pistons have to be in CLOSED
position. Screw partially down the screws ( 14 ) in crossed sequence compressing the springs uniformly
until the cap ( 15 )is completely closed, see fig. 26. Repeat the operation on the opposite side;
11. Execute some test cycles to check the correct functioning of the actuator before installing it.
VALBIA S.r.l. – 25065 Lumezzane (BS) Italy
tel 0308969411 – fax 0308610014
e-mail: [email protected] – http//www.bonomi.it
Pag. 8 di 9
Rev.2 – Marzo 2016 – Manuale VB S82 en New-rev_02
USE AND MAINTENANCE MANUAL
PNEUMATIC ACTUATORS
SERIES 82
8 Adjustment
By means of the left screw the 90° end position ( open ) can be adjusted, see Fig. 27, of the right screw the 0° end position (closed), see Fig. 28.
L
R
L
R
Fig.27
L
R
L
R
Fig.28
NOTE : During the adjustment the pinion must not be blocked on the support.
8.1
Adjustment procedure, actuator in open position





8.2
Put the actuator in closed position;
Ad just by means of the left adjustment screw ( L );
Put the actuator in open position and check the adjustment
Repeat until the desired adjustment is achieved;
Hold the screw in the correct position and tighten the nut.
Adjustment procedure, actuator in open position





Put the actuator in open position (supply compressed air for mod SR);
Ad just by means of the right adjustment screw ( R );;
Put the actuator in closed position and check the adjustment (interrupt the air supply for mod.SR);
Repeat until the desired adjustment is achieved;
Hold the screw in the correct position and tighten the nut.
VALBIA S.r.l. – 25065 Lumezzane (BS) Italy
tel 0308969411 – fax 0308610014
e-mail: [email protected] – http//www.bonomi.it
Pag. 9 di 9
Rev.2 – Marzo 2016 – Manuale VB S82 en New-rev_02
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