Emerson Bettis Q series Instruction manual

APPROVED
Bettis Q-Series Valve Actuator
Installation, Operation & Maintenance Manual
DOC.IOM.BQ.E Rev. 2
October 2017

Installation, Operation and Maintenance Manual
DOC.IOM.BQ.E Rev. 2
Table of Contents
October 2017
I
Table of Contents
Contents
A Before you start ������������������������������ 1
A1 Orientation (see fig. A1)............................ 1
A2 Installation, operation and maintenance
reference documents................................ 1
A3 Operating medium ................................... 1
A4 Product integrity....................................... 1
A5 Hazardous areas........................................ 2
A6 Warning ; Moving parts ............................ 2
A7 Prevent moisture entering the actuator.... 2
A8 Warehouse storage................................... 2
A9 On site storage.......................................... 2
A10 Lifting instructions.................................... 2
1 Introduction ������������������������������������ 3
1.1 Orientation (see fig. 1.1)........................... 3
2 Installation �������������������������������������� 4
2.1 Before you start......................................... 4
2.2 Failure modes............................................ 4
2.3 Operating principle................................... 5
2.4 Actuator assembly codes......................... 9
2.5 Valve Installation..................................... 11
2.6 Recommended tubing sizes.................... 12
2.7 Air consumption per stroke at
atmospheric pressure ............................. 12
3 Mechanical stroke adjustment ������� 13
3.1 Adjusting the “Open” position................ 13
3.2 Adjusting the “Closed” position.............. 13
3.3 Adjusting the end position with no
electrical wiring connected..................... 14
4 Removing and mounting of the
Bettis Q-Series Modules ����������������� 15
4.1 Removing the Bettis Q-Series modules... 15
4.2 Mechanical alignment and mounting
of the control module ............................. 15
4.3 Tightning moments................................ 15
4.4 Connecting air supply ............................. 15
5 Speed control option ��������������������� 16
5.1 Mounting Speed Control throttle(s): ...... 16
5.2 Adjusting Speed Control throttle(s):....... 16
6 Manual Control option������������������� 17
6.1 Mounting Manual Control....................... 17
6.2 Manual Control operation....................... 17
7 Trouble shooting Bettis Q-Series ���� 18
7.1 Mechanical problems.............................. 18
7.2 Pneumatic problems............................... 18
7.3 Electrical problems ................................. 19
8 Maintenance���������������������������������� 20
8.1 General.................................................... 20
8.2 Single acting / Spring Return actuators... 20
8.3 Bettis Q-Series recommended spare parts.20
8.4 Position tracking device kits.................... 20
8.5 Conversion kits........................................ 20
8.6 High Temp and Low Temp Conversion kits.. 20
9 Disassembly����������������������������������� 21
9.1 Before starting ....................................... 21
9.2 Removing end caps all types QD and
QS 40 to QS 350...................................... 22
9.3 Removing end caps type QS 600
to 1600 ................................................... 23
9.4 Removing limit stop bolts, pistons and
pinion assembly ...................................... 24
10 Reassembly������������������������������������ 26
10.1 Reassembly guide band and pinion
assembly................................................. 26
10.2 Reassemble the pistons........................... 28
10.3 Reassembly end caps, all types QD and /
QS 40 to QS 350...................................... 29
10.4 Reassembly end caps single acting
actuators QS 600 to QS 1600.................. 30
10.5 Mounting and setting of limit stops........ 31
10.6 Final assembly and airtightness test ....... 32
11 Bettis Q-Series Parts����������������������� 33
11.1 Exploded view Bettis Q-Series
(base actuator)........................................ 33
11.2 Bill Of Material......................................... 34
11.3 Exploded view Bettis Q-Series
(Control Module) .................................... 35

October 2017
Installation, Operation and Maintenance Manual
DOC.IOM.BQ.E Rev. 2
1
A2 Installation, operation and
maintenance reference documents
Before mounting, installing, commissioning or
(dis)assembling the actuator consult the following
documents:
- All chapters of this manual and
- Installation Guide of the supplied Control Module.
- For installation in hazardous area’s:
The applicable section of the Installation Guide, as
shipped with the Control Module.
- For Control Modules with bus communication
there may be an additional Reference Manual with
more detailed information.
(available from www.emerson.com/bettis).
A3 Operating medium
• Air or inert gasses:
- Filtered to 50 micron (5 micron for QC54).
- Check the Installation Guide as shipped with the
module for the applicable air quality.
• Maximum pressure, 8 bar g / 120 psig
• Dew point 10 K below operating temperature.
• For subzero applications take appropriate
measures.
A4 Product integrity
• Assembly or disassembly is only allowed for
replacing seals and guide bands (soft parts).
A Before you start
Fig A1 Orientation
• Bettis Q-Series actuators must be isolated both
pneumatically and electrically before (dis)
assembly.
• It is not permitted to connect a pressure vessel
with unreduced media to the Bettis Q-Series
pneumatic actuator.
• Bettis Q-Series actuators must not be connected
to an air supply greater than 8 bar g or 120 psig
• This manual does not provide instructions for
installations in hazardous areas.
• Installation, adjustment, putting into service, use,
assembly, disassembly and maintenance of the
pneumatic actuator must be done by qualified
personnel.
A1 Orientation(seeg.A1)
The Bettis Q-Series actuator is an integrated concept
for the automation of quarter turn valves, dampers
or other quarter turn applications. It can consists of
three basic parts:
1. Pneumatic actuator
2. Pneumatic Module or NAMUR Plate
3. Control Module
1
2
350µm
(QC54 = 5µm)
OK
Fig A2 When needed, use Filter/Regulators with correct filter
specification.

Installation, Operation and Maintenance Manual
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A5 Hazardous areas
Improper installation in a hazardous area can
cause an explosion.
• Assembly, disassembly and maintenance must be
done in safe area’s without a potential explosion
hazard.
• For information about installation in a hazardous
area, refer to the appropriate sections of the
Installation Guide, as shipped with the control
module.
A6 Warning ; Moving parts
Applying pressure to the actuator or
Applying a control signal to the Control
Module, may cause the actuator/valve
assembly to operate.
A7 Prevent moisture entering the
actuator
Condensation or moisture that enters the
actuator or the Control Module can damage these
components and can result in failures. Therefore:
• Try not to mount the actuator with the conduit
openings or the air entries, pointing upward.
• Ensure integrity of gaskets and o-rings.
• Install drip loops in conduit or cable. When
needed use Filter/Regulators with correct filter
specification.
• Seal all conduit openings whether used or not.
50µm
(QC54 = 5µm)
OK
Fig A3 Install drip loops and use Filter/Regulators with correct
filter specification.
A8 Warehouse storage
• Bettis Q-Series Actuators and Control Modules
should be stored in a clean, dry warehouse, free
from excessive vibration and rapid temperature
changes.
• Actuators should not be stored on any floor
surface.
A9 On site storage
• Bettis Q-Series Actuators and Control Modules
should be stored in a clean, dry warehouse, free
from excessive vibration and rapid temperature
changes.
• Ensure all actuator covers are in place and
securely fastened.
• Replace plastic conduit plugs with appropriate
pipe plugs.
Failure to follow proper storage guidelines will void
warranty.
A10 Lifting instructions
• Use lifting equipement as required by national or
local legislation.
Table A1 Weight of Actuators with
control modules
ACTUATOR
TYPE
Double
acting
Spring
Return
Double
acting
Spring
Return
in kg� in Ib
Q40 3.9 4.5 8.6 9.9
Q65 4.5 5.7 9.9 12.6
Q100 5.2 6.7 11.5 14.8
Q150 6.9 9 15.2 19.8
Q200 7.9 11.2 17.4 24.7
Q350 12.5 19 27.6 41.9
Q600 21.5 29.7 47.4 65.5
Q950 28.5 40.7 62.8 89.7
Q1600 44.8 67.9 98.8 149.7
• It is strongly recommended to use lifting straps to
lift the actuator/valve assembly.
• If an actuator/valve assembly should be lifted, it
is strongly recommended to connect the lifting
straps in such way that the actuator and valve is
supported.

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DOC.IOM.BQ.E Rev. 2
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1 Introduction
1.1 Orientation(seeg.1.1)
Fig 1.1 Introduction
5. Entries for optional manual control
6. Exhausts
7. Supply air entry
8. Entries for optional speed control
1. Pneumatic actuator
2. Visual Position Indication
3. Stroke adjustment bolts
4. Control Module
The Bettis Q-Series actuator is an integrated concept for the automation of quarter turn valves, dampers or
other quarter turn applications.
1
2
3
4
56
7
8
Factory setting:
Rotation 90°±0.5°
Insert according
ISO 5211 or DIN 3337
Optional insert shapes

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2 Installation
2�1 Before you start
In case of an air or electrical failure, it is important to know the behavior of the actuator.
Before mounting the actuator on a valve consult the following paragraph’s.
2�2 Failure modes
Fig. 2.2.2
Fig. 2.2.1
closed
open
- the valve is open after a counter clock wise
rotation (viewed from above).
2�2�2 Position after a failure
The position of the actuator after a failure depends on
the:
- Operating principles (see §2.3)
- Assembly code (see §2.4)
- Kind of failure
Table 2�1 Position after a failure
Principle of
operation
Assembly
code :
Kind of
failure : Position :
Double
acting
actuator
CW
Pressure not defined
Signal Closed
Supply voltage Closed
CC
Pressure not defined
Signal Open
Supply voltage Open
Single
acting
actuator
(Spring
Return)
CW
Pressure Closed
Signal Closed
Supply voltage Closed
CC
Pressure Open
Signal Open
Supply voltage Open
Table 2�2 Position after a failure with a Double
acting module with Fail-In-Last-
Position function
Principle of
operation
Assembly
code :
Kind of
failure : Position :
Double
acting
actuator
CW
Pressure not defined
Signal not defined
Supply voltage Closed
CC
Pressure not defined
Signal not defined
Supply voltage Open
2�2�1 Valve rotation
Valves are normally manufactured so that:
- the valve is closed after a clock wise rotation
(viewed from above).

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B-port
A-port
Ps
Rb
5/2 Spool valve
Ra
Option: LMC
Option:
Throttle 1
Option:
Throttle 2
Pilot
valve 1
2�3 Operating principle
See paragraph 2.4 for more information about
actuator assembly codes
* Electric control signals can be connected in the
Control Module (QC; see documentation supplied
with the Control Module). The Control Module is
equipped with a pilot valve which controls a 5/2
spool valve.
* Connect air supply to air inlet (Ps).
Outward stroke
1 Send control signal “Open” to the Control
Module.
2 Pilot valve 1 will be activated and the 5/2 spool
valve will pressurize the central air chamber.
3 The piston will move outwards to the “Open”
position.
4 The Control Module indicates the “Open” position
and activates feedback signal “Open”.
Inward stroke
1 Send control signal “Close” to the Control
Module.
2 Pilot valve 1 will be deactivated and the 5/2 spool
valve will pressurize the end cap air chambers.
3 The piston will move inwards to the “Closed”
position.
4 The Control Module indicates the “Closed”
position and activates feedback signal “Closed”.
Optional controls:
LMC Local Manual Control
SCSpeed Control throttles
IMPORTANT:
In case of an electric control signal failure, the
actuator will move to its “Closed” position.
2�3�1 Double acting actuators
IMPORTANT
The operating principle, as explained here, is
applicable for actuators with assembly code CW
(direct acting).
- The outward stroke will move the valve to the
“Open” position.
- The inward stroke will move the valve to the
“Closed” position.
For assembly codes CC the operating principle is
reversed (reverse acting):
B-port
A-port
Ps
Rb
Pilot
valve 1
5/2 Spool valve
Ra
Option: LMC
Option:
Throttle 1
Option:
Throttle 2
Fig. 2.3.1
Fig. 2.3.2

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2�3�2 Double acting actuators with Fail In
Last Position function
IMPORTANT
The operating principle, as explained here, is
applicable for actuators with assembly code CW
(direct acting).
- The outward stroke will move the valve to the
“Open” position.
- The inward stroke will move the valve to the
“Closed” position.
For assembly codes CC the operating principle is
reversed (reverse acting):
See paragraph 2.4 for more information about
actuator assembly codes
* Electric control signals can be connected in the
Control Module (QC; see documentation supplied
with the Control Module). The Control Module is
equipped with a pilot valve which controls a 5/2
spool valve.
* Connect air supply to air inlet (Ps).
Outward stroke
1 Send control signal “Open” to the Control Module to
activate Pilot valve 1 and de-activate Pilot valve 2.
2 The 5/2 spool valve will pressurize the central air
chamber.
3 The piston will move outwards to the “Open”
position.
4 The Control Module indicates the “Open” position
and activates feedback signal “Open”.
Inward stroke
1 Send control signal “Close” to the Control Module
to activate Pilot valve 2 and
de-activate Pilot valve 1.
2 The 5/2 spool valve will pressurize the end cap air
chambers.
3 The piston will move inwards to the “Closed”
position.
4 The Control Module indicates the “Closed”
position and activates feedback signal “Closed”.
Optional controls:
LMC Local Manual Control
SCSpeed Control throttles
B-port
A-port
Ps
Pilot valve 1
5/2 Spool valve
Pilot valve 2
Option: LMC 1
Option:
LMC 2
Option:
Throttle 1
Option:
Throttle 2
Rb
Ra
B-port
A-port
Ps
Pilot valve 1
5/2 Spool valve
Pilot valve 2
Option: LMC 1 Option: LMC 2
Option:
Throttle 1
Option:
Throttle 2
Rb
Ra
Fig. 2.3.3
Fig. 2.3.4

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A-port B-port
Ps
Pilot
valve 1
3/2 Spool valve
Ra
Option: LMC
Option: Throttle 1
A-port B-port
Ps
Pilot
valve 1
3/2 Spool valve
Ra
Option: LMC
Option: Throttle 1
2.3.4 Singleacting(springreturn)actuators See paragraph 2.4 for more information about
actuator assembly codes
* Electric control signals can be connected in the
Control Module (QC; see documentation supplied
with the Control Module). The Control Module is
equipped with a pilot valve controls a 3/2 spool
valve.
* Connect air supply to air inlet (Ps).
Outward stroke
1 Send control signal “Open” to the Control Module.
2 Pilot valve 1 will be activated and the 3/2 spool
valve will pressurize the central air chamber.
3 The piston will move outwards to the “Open”
position
4 The Control Module indicates the “Open” position
and activates feedback signal “Open”.
Inward stroke
1 Send control signal “Close” to the Control Module.
2 Pilot valve 1 will be deactivated and the 3/2 spool
valve will vent the central air chamber
3 The springs will move the pistons inwards to the
“Closed” position
4 The Control Module indicates the “Closed”
position and activates feedback signal “Closed”.
Optional controls:
LMC Local Manual Control
SC Speed Control throttles
Fig. 2.3.5
Fig. 2.3.6
IMPORTANT
The operating principle, as explained here, is
applicable for actuators with assembly code CW
(direct acting).
- The outward stroke will move the valve to the
“Open” position.
- The inward stroke will move the valve to the
“Closed” position.
For assembly code CC the operating principle is
reversed (reverse acting):

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3
1
2
4
2�3�5 Position feedback
Bettis Q-Series patented, position sensing system
The Bettis Q-Series actuator (1) has a patented,
contactless position sensing system. This system
consists of a position probe (2) which is rides on a
special curve (4) in the pinion bottom.
The curve is shaped in such a way that the position
probe moves linearly and proportionally to the
rotation of the actuator pinion.
The linear movement of the position probe is used,
inside the control module (3) to operated the limit
switches.
WARNING:
Do not put the Control module in direct contact
with magnetic material. This can cause damage or
malfunction of the position feedback.
Installation of the Bettis Q-Series modules
For installation instructions of the modules see
chapter 4.
Installation Guides - Control modules
Each Control Module is shipped with an Installation
Guide, which contains more information on the
pneumatic and electrical installation and operation
of the Module. Additionally, these Installation Guides
can be downloaded from www.emerson.com/bettis
Fig. 2.3.7

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2�4 Actuator assembly codes
2�4�1 Double acting assembly codes
2
1
2
2
1
2
1
2
2
1
2
2
B
A
A
B
B
A
A
B
2
1
2
2
1
2
1
2
2
1
2
2
B
A
A
B
B
A
A
B
2
1
2
2
1
2
1
2
2
1
2
2
B
A
A
B
B
A
A
B
2
1
2
2
1
2
1
2
2
1
2
2
B
A
A
B
B
A
A
B
CC
I
CW
C
CC
C
Standard assembly code:
(= Clock Wise Rotation)
Visual indicator mounted:
(= for In line position indication
Pinion
Position
indicator
Pistons
A = Pilot valve operated in Control Module - Central air chamber (1) pressurized
B = Pilot valve not operated in Control Module - End cap air chambers (2) pressurized
All views are from above. Pistons are shown in inner position
Optional assembly code:
(= Counter Clock Wise Rotation)
Visual indicator mounted:
(= for In line position indication
Optional assembly code:
(= Clock Wise Rotation)
Visual indicator mounted:
(= for Cross line position indication)
Optional assembly code:
(= Counter Clock Wise Rotation)
Visual indicator mounted:
(= for Cross line position indication)
CW
I

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2.4.2 Singleacting(SpringReturn)assemblycodes
B
A
2
12
B
A
2
12
B
A
2
12
B
A
2
12
B
A
2
12
B
A
2
12
B
A
2
12
B
A
2
12
B
A
2
12
B
A
2
12
B
A
2
12
B
A
2
12
B
A
2
12
B
A
2
12
B
A
2
12
B
A
2
12
Standard assembly code:
(= Clock Wise Rotation /
Spring to Close)
Visual indicator mounted:
(= for In line position indication
Pinion
Optional assembly code:
(= Clock Wise Rotation /
Spring to Close)
Visual indicator mounted:
(= for Cross line position indication
Position
indicator
Pistons
Optional assembly code:
(= Counter Clock Wise Rotation /
Spring to Open)
Visual indicator mounted:
(= for Cross line position indication
A = Pilot valve operated in Control Module - Central air chamber (1) pressurized
B = Pilot valve not operated in Control Module - Springstroke(2)
All views are from above. Pistons are shown in inner position
Optional assembly code:
(= Counter Clock Wise Rotation /
Spring to Open)
Visual indicator mounted:
(= for In line position indication
CC
C
CW
C
CC
I
CW
I

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12
ISO 5211 DIN 3337
90° 45°
Fig. 2.5.4
Fig. 2.5.5
2�5 Valve Installation
WARNING!
Actuator must be isolated both
pneumatically and electrically before (dis)
Fig. 2.5.1
Fig. 2.5.2
Fig. 2.5.3
CAUTION!
Be sure that the insert is mounted at 90° or 45°.
assembly. Before mounting or (dis)assembling the
actuator consult the relevant sections of this manual.
Remove handle nut, handle, lock washer, etc. from
valve if required.
It is possible to mount the insert turned 22.5°. This
way the valve will not open or close the right way.
CAUTION!
- Before mounting the actuator on the valve
be sure that both the actuator and the
valve have the same position.
- When mounting do not hit with hammer
on pinion top.
IMPORTANT!
- When mounting the actuator across the
pipeline, the NAMUR slot at the pinion
top is turned 90° and does not reflect the
position of the valve blade.
- When mounting NAMUR (VDI/VDE3845)
switch boxes or positioners take care that
these devices can be and will be set to
reflect the actual limit positions.
OK
OK

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2�6 Recommended tubing sizes
Actuator Model no� Runs up to 1�2 mtr / 4 ft� Runs over 1�2 mtr� / 4 ft�
Q-40, 65 6 mm / 1/4” 6 mm / 1/4”
Q-100, 150, 200, 350 6 mm / 1/4” 8 mm ~ 5/16”
600, 950, Q1600 8 mm / 1/4” 10 mm ~ 3/8”
2�7 Air consumption per stroke at atmospheric pressure
Air chamber
-at1atm(litres)
Model
Q40 Q65 Q100 Q150 Q200 Q350 Q600 Q950 Q1600
Central air chamber 0.16 0.33 0.35 0.84 0.8 1.8 2.9 4.7 7.3
End cap air chambers 0.22 0.36 0.49 0.78 1 1.9 3.1 4.9 8.0
- at 1 atm (cu./in.)
Central air chamber 10 20 21 51 49 110 177 287 445
End cap air chambers 13 22 30 48 61 116 189 299 488

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Fig. 3.3
Closed
-3°15°
Open
75°
90°
±0.5°
93°
3 Mechanical stroke adjustment
The factory setting of the stroke is 90° ±0.5°
If required the stroke can be adjusted by means of
two stroke adjustment bolts.
3�1 Adjusting the “Open” position
1. Connect supply pressure and control wiring
according the instructions shipped with the
Control Module.
2. Remove the nut caps (A).
3. Loosen nuts (B). See table 3.1.
Repeat next steps 4 to 8 until desired setting is
achieved:
4. Send the actuator/valve assembly to the “Open”
position (see instructions shipped with the
Control Module).
5. Check whether the position of the valve is correct.
The position indication knob (C) indicates the
valve position
If the position is not correct, proceed with the
following steps:
6. Send the actuator/valve assembly to the “Closed”
(opposite) position (see instructions shipped with
the Control Module).
7. Turn the limit stop bolts (see table 3.1):
Turning in reduces the stroke:
Turning out increase the stroke:
8. Send the actuator/valve assembly to the “Open”
position (see instructions shipped with the
Control Module).
9. Check whether the position of the valve is correct.
When the “Open” position is correct proceed with
adjusting the “Closed” Position.
3�2 Adjusting the “Closed” position
1. Execute steps 4 to 8 of §3.1 but now for the
“Closed” position.
2. Mount the nut caps (A).
Code CW and Code CC
Closed
position
Fig. 3.1
Fig. 3.2
ABC
Open
position

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OK
OK
Fig. 3.1.2
3�3 Adjusting the end position with no
electrical wiring connected�
If the Control Module is equipped with the optional
Pneumatic Manual Override (A), only supply
pressure needs to be connected to cycle the
actuator. For more information on how to use the
“Pneumatic Manual Override” see chapter 6.
REMARK:
In case of air leakage over the limit stop bolts, turn
the lock nut of the limit stop bolts tighter, until
leakage stops.
Table 3�1 Angular Displacment & Tools
Actuator Size Angular
displacement
Tools
Nut Bolt
Q40 3.0 ° W10 mm SD1.2 mm
Q65 3.6 ° W13 mm SD1.2 mm
Q100 2.7 ° W13 mm SD1.2 mm
Q150 2.7 ° W17 mm SD1.5 mm
Q200 2.3 ° W17 mm SD1.5 mm
Q350 2.7 ° W19 mm SD1.5 mm
Q600 2.7 ° W24 mm W10 mm
Q950 2.5 ° W24 mm W10 mm
Q1600 2.7 ° W30 mm W10 mm
W = Wrench
SD = Screwdriver

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4 Removing and mounting of the Bettis Q-Series Modules
WARNING
Bettis Q-Series actuators must be isolated
both pneumatically and electrically before
(dis)assembly.
The Pneumatic Module (1) is placed between the
Control module (2), and the housing (3) of the
actuator. It controls the air going in and out the
actuator.The actuator can be equipped with a
NAMUR plate (6) for direct solenoid mounting.
Fig. 4.1
4x No. 2 3x No. 5
1
2
3
4
4
5
6
4�1 Removing the Bettis Q modules
1 To prevent warping of the modules and damage
the threads:
- First loosen the all screws 1/4 to 1/2 turns.
- The screws can now be removed completly.
2 Prevent damage to the position probe (5) to
guarantee accurate position feedback.
4�2 Mounting the Bettis Q modules
1 Take care that the following mating surfaces are
clean.
- Between the actuator housing and the
Pneumatic Module (or NAMUR plate).
- Between the Pneumatic Module and the Control
Module.
2 To align the position probe (5) properly to the
Control Module:
- First mount the Pneumatic Module.
- Then mount the Control Module.
3 Press the O-rings (8) and seals (4, 7 & 9) firmly
their mating grooves to keep them in place during
mounting.
4 Prevent damage to the position probe (5) to
guarantee accurate position feedback.
5 When fastening the module turn each screw two
to three turns at a time, in sequence, to assure an
air tight connection.
4�3 Tightning moments
The Control Module and Pneumatic module should
be fastened by using the allen keys as indicated and
applying the following tightning moments:
- Phillips head size 2, 1.8 to 2.2 Nm
(16 - 19.5 In.lbs)
- Allen Key No 5: 6.1 to 6.6 Nm
(54 - 58.4 In.lbs)
4�4 Connecting air supply
To connect air supply see the Installation Guide
shipped with the control module.
TIP
Grease the O-rings and seals before
mounting. This makes them sticky and
prevents that these O-rings and seals fall
away during mounting.
Alignment-
edge
Alignment-
edge
IPT
probe
Fig. 4.2

Installation, Operation and Maintenance Manual
DOC.IOM.BQ.E Rev. 2 October 2017
16
5 Speed control option
WARNING
Bettis Q-Series actuators must be isolated
both pneumatically and electrically before
any (dis)assembly is begun.
The Bettis Q-Series can be supplied with a Speed
Control option. One throttle is required for Spring
Return actuators and up to two for Double Acting
actuators.
The speed control throttle controls the air flow
in and out of an air chamber and as such limits
the speed of the “Opening” and “Closing” stroke
simultaneously
5�1 Mounting Speed Control
throttle(s):
1 Remove the plug(s) at the side of the module and
turn in the throttle (1).
2 Spring Return actuators: Use the top entry only.
3 Double acting actuators: Use both bottom and
top entries.
- For standard actuators, the top entry will
throttle the closing stroke.
- For standard actuators, the bottom entry will
throttle the opening stroke.
- For reverse acting actuators, the opposite
strokes will be throttled.
5�2 Adjusting Speed Control
throttle(s):
1 Remove the nut cap (2).
2 Clockwise rotation of the adjustment screw
reduces the speed.
3 Counter clockwise rotation of the adjustment
screw increases the speed.
4 Replace the nut cap.
21
Figure 5.1 Speed Control option
Speed Control option
O-ring seal
Speed control
Nut cover
Spring Return:
Top entry only.
Double Acting:
Bottom and/or top entries.

October 2017
Installation, Operation and Maintenance Manual
DOC.IOM.BQ.E Rev. 2
17
6 Manual Control option
WARNING
Bettis Q-Series actuators must be isolated
both pneumatically and electrically before
(dis)assembly.
For commissioning, emergency or maintenance
purposes, the Bettis Q-Series can be supplied with
one or two Manual Control options. These can
operate the pilot valve(s) inside the module and as
such operate the actuator, when there is air pressure
available, but no control signal or power supply.
6�1 Mounting Manual Control
1 To add a Manual Control, remove the plug(s)
in front of the module and turn in the Manual
Control.
- For normal operation the module should be
fitted with one Manual Control.
- For Double Acting with a Fail-in-Last-Position
function, two Manual Control can be fitted.
6�2 Manual Control operation
1 The Manual Control has a “Push & Lock” function:
- To operate the Manual Control, use a screw
driver, push to activate and release to
de-activate the pilot valves.
- If required turn it 45°, to lock it in position and
keep the actuator in its operated state.
2 In case of a Fail in Last Position configuration with
two manual controls:
- The manual control on the right side (default
location) will pressurize the central air chamber
and cause the actuator to rotate counter
clock wise. For reverse acting Bettis Q-Series
actuators (Assembly code CC) the actuator will
rotate clock wise.
- The manual control on the left side (Location for
2nd Manual Control) will pressurize the end cap
air chambers and cause the actuator to rotate
clock wise. For reverse acting Bettis Q-Series
actuators (Assembly code CC) the actuator will
rotate counter clock wise.
- In order to operate one of the manual control,
be sure the opposite manual control is
de-activated and unlocked.
3 It is possible to rotate the screw multiple cycles.
The unit will than toggle every 90° between
“locked” (1) and “unlocked” (0).
45°
Fig. 6. 1 Local Manual Control option
Manual Control option O-ring seal
Manual control
Nut cover
Location for 2nd
Manual Control
Default location of
Manual Control
Lock
Unlock
On
Off