Bray Series 70 User manual

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High
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R
SERIES 70
2ND GENERATION ELECTRIC ACTUATOR
OPERATION AND MAINTENANCE MANUAL

BRAY Series 70 Electric Actuator
Operation and Maintenance Manual
Ta b l e OfCO n T e n T s :
p a g e
sa f e T y i n s T r u C T i O n s : d e f i n i T i O n O f T e r m s .................................................................... 2
i n T r O d u C T i O n ............................................................................................................. 3
p r i n C i p l e O f O p e r a T i O n .............................................................................................. 3
e l e C T r i C a l O p e r a T i O n ................................................................................................ 3
m e C h a n i C a l O p e r a T i O n .............................................................................................. 3
m a n u a l O v e r r i d e O p e r a T i O n ..................................................................................... 4
p r e -i n s T a l l a T i O n s T O r a g e ......................................................................................... 4
in s T a l l a T i O n 4
m O u n T i n g T O av a l v e ................................................................................................. 4
f i e l d w i r i n g ............................................................................................................... 4
m u l T i p l e a C T u a T O r w i r i n g ......................................................................................... 5
T r a v e l l i m i T s w i T C h a n d m e C h a n i C a l T r a v e l s T O p a d j u s T m e n T ............................... 5
C l O s e a d j u s T m e n T ...................................................................................................... 5
O p e n a d j u s T m e n T s ...................................................................................................... 6
ba s i C di s a s s e m b l y a n d as s e m b l y in s T r u C T i O n s .......................................................... 6
fi e l d O r fa C T O r y in s T a l l a b l e Op T i O n s
T O r q u e s w i T C h e s O p e r a T i O n ....................................................................................... 7
h e a T e r ........................................................................................................................ 8
s e r v O p r O m O d u l e ...................................................................................................... 8
e x T e r n a l f e e d b a C k p O T e n T i O m e T e r ........................................................................... 10
a u x i l i a r y s w i T C h e s .................................................................................................... 10
a u x i l i a r y s w i T C h C O n f i g u r a T i O n C h a r T .................................................................... 11
T y p i C a l w i r i n g d i a g r a m s f O r m C(s p d T ) s w i T C h e s O n /O f f s e r v i C e ............................ 12
T y p i C a l w i r i n g d i a g r a m s m O d u l a T i n g s e r v i C e ......................................................... 13
a d j u s T m e n T s , C a l i b r a T i O n & s T a T u s l e d O f s e r v O p r O ............................................. 14
q u i C k C O n n e C T r e C e p T a C l e s ...................................................................................... 15
s p i n n e r ....................................................................................................................... 16
l O C a l C O n T r O l s T a T i O n .............................................................................................. 16
a p p e n d i x a
b a s i C T O O l s ................................................................................................................ 17
a p p e n d i x b
a C T u a T O r T r O u b l e s h O O T i n g C h a r T ........................................................................... 18
s e r v O T r O u b l e s h O O T i n g C h a r T ................................................................................. 19
a p p e n d i x C
e x p l O d e d v i e w a n d p a r T s l i s T O f s i z e 003 a n d 005................................................. 20
e x p l O d e d v i e w a n d p a r T s l i s T O f s i z e 008, 012 a n d 020......................................... 21
e x p l O d e d v i e w a n d p a r T s l i s T O f s i z e 030, 050 a n d 065......................................... 22
e x p l O d e d v i e w a n d p a r T s l i s T O f s i z e 130 a n d 180 (e l e C T r i C )............................... 23
e x p l O d e d v i e w a n d p a r T s l i s T O f s i z e 130 a n d 180 (g e a r b O x ).............................. 24
f O r i n f O r m a T i O n O n T h i s p r O d u C T a n d O T h e r b r a y p r O d u C T s
p l e a s e v i s i T u s a T O u r w e b p a g e - www.bray.com 1

BRAY Series 70 Electric Actuator
Operation and Maintenance Manual
2
Sa f e t y In S t r u c t I o n S - De f I n I t I o n o f te r m S
reaD anD foLLoW tHeSe InStructIonS
SaVe tHeSe InStructIonS
1.1 Ha z a r D -f r e e u S e
This device left the factory in proper condition to be safely
installed and operated in a hazard-free manner. The notes
and warnings in this document must be obeserved by the
user if this safe condition is to be maintained and hazard-
free operation of the device assured.
Take all necessary precautions to prevent damage to the
actuator due to rough handling, impact, or improper storage.
Do not use abrasive compounds to clean the actuator, or
scrape metal surfaces with any objects.
The control systems in which the actuator is installed must
have proper safeguards to prevent injury to personnel, or
damage to equipment, should failure of system components
occur.
1.2 Qu a L I f I e D Pe r S o n e L
A qualied person in terms of this document is one who is
familiar with the installation, commissioning and operation of
the device and who has appropriate qualications, such as:
○ Is trained in the operation and maintenance of electric
equipment and systems in accordance with established
safety practices
○ Is trained or authorized to energize, de-energize, ground,
tag and lock electrical circuits and equipment in
accordance with established safety practices
○ Is trained in the proper use and care of personal
protective equipment (PPE) in accordance with
established safety practices
○ Is trained in rst aid
○ In cases where the device is installed in a potentially
explosive (hazardous) location – is trained in the
operation, commissioning, operation and maintenance of
equipment in hazardous locations
WARNING
The actuator must only be installed, commissioned, oper-
ated and repaired by qualied personnel.
The device generates large mechanical force during normal
operation.
All installation, commissioning, operation and maintenance
must be performed under strict observation of all applicable
codes, standards and safety regulations.
Reference is specically made here to observe all appli-
cable safety regualtions for actuators installed in potentially
explosive (hazardous) locations.
!
WARNING indicates a potentially hazardous situation which, if not avoided, could
result in death or serious injury.
!
CAUTION indicates a potentially hazardous situation which, if not avoided, may
result in minor or moderate injury.
NOTICE used without the safety alert symbol indicates a potential situation which,
if not avoided, may result in an undesirable result or state, including
property damage.
!

In t r o D u c t I o n
The Bray Series 70 is a quarter turn electric actuator with
manual override for use on any quarter turn valve requiring
up to 18000 in•lb of torque. Operating speeds vary between
6 to 90 seconds.
Pr i n c i P l e OfOP e r a t i O n
The Series 70 actuator is basically divided into two internal
sections; the power center below the switchplate, and the
control center above the switchplate. Below the switchplate
the capacitor and gearmotor with its spur geartrain drive a nal
non-backdriveablewormgearoutput.Theoverridemechanism
for manual operation is also housed here. Above the switch-
plate is where user required, readily accessible components
are placed. The camshaft assembly, limit switches, terminal
strips, torque switches, heater, and servo are all placed here
for easy access. External to the unit are found adjustable me-
chanical travel stops, a large easy to read indicator, the unique
manual override handwheel and dual conduit entry ports. The
external coating is a high quality polyester powder coat which
has exceptional UV as well as chemical resistance.
el e c t r i c a l OP e r a t i O n
The motors used in the Bray Series 70 are either permanent
induction split capacitor design (single phase AC power),
SCI (Three Phase AC Power) or PM (DC Power). Travel limit
switches are mechanical form (SPDT) with contacts rated at
10 amp (0.8 PF), 1/2 HP 125/250 VAC. In cases where the
torque capacity of the unit is exceeded to the point where the
motor stalls and overheats, a thermal protector switch built
into the motor windings will automatically disconnect the motor
power. Once the motor cools sufciently the thermal protector
switch will reset. Optional torque switches are available in all
units to prevent the possibility of stalling the motor, thus reduc-
ing the necessity for an inoperable thermal cooldown period.
Torque switches installed by Bray are factory adjusted to the
output torque rating of the unit using electronic torque testing
equipment.
NOTICE
Field adjustment of the torque switches is not recommended.
General Electrical Schematic
NOTE: this is only a reference. For the actual wiring diagram refer to
the diagram placed inside the actuator cover.
Me c h a n i c a l OP e r a t i O n
Mechanically, the ratio of the gearmotor determines the speed
of the unit. The gearmotor utilizes high efciency spur gears
with various ratios for the different speeds. Initial gear reduction
throughthespurgearsisthentransferredtothewormshaft.The
nal gear reduction and output is through a non-backdriveable
worm gear set. Positioning is determined by an indicator-cam
shaft linked to the output shaft. In the declutchable condition
the manual override drives the worm shaft when engaged.
CAMS
NEUTRAL
OPEN
CLOSE
LIVE
OPEN
CLOSE
MANUAL OVERRIDE SWITCH
TRAVEL LIMIT SWITCHES
CAPACITOR
MOTOR
THERMAL PROTECTOR
TORQUE SWITCHES
FIELD
WIRING
(OPTIONAL)
Single phase power supply.
N.C.
N.O.
COM
COM
N.C.
N.O.
COM
N.O.
N.C.
COM
N.O.
N.C.
N.O.
COM
N.C.
1
2
3
Use this chart as a guide to interpret the S70 electric actuator part number.
Pa r t nu M b e r i n g Sy S t e M re f e r e n c e c h a r t
Pa r t nu M b e r tO r q u e SP e e d , 1/4 tu r n Su P P l y
(In.Lbs) (Seconds) (Z Voltage)
70-003X-113yz-536 300 60/30/15 0/1/2/3/4
70-005X-113yz-536 500 60/30/15 0/1/2/3/4
70-008X-113yz-536 800 30/15/10/6 0/1/2/3/4/5/6/7/8
70-012X-113yz-536 1200 30/15/10/6 0/1/2/3/4/5/6/7/8
70-020X-113yz-536 2000 30/15 0/1/2/3/4/5/6/7/8
70-030X-113yz-536 3000 30/18 0/2/3/4/5/6/7/8
70-050X-113yz-536 5000 30/18 0/2/3/4/5/6/7/8
70-065X-113yz-536 6500 30 0/2/4/5/6/7/8
70-1806-113yz-536 18000 90 0/2/4/5/6/7/8
70-1306-113YZ-536 13000 90 0/2/4/5/6/7/8
Y - DESIGNATES STYLE
A= DECLUTCHABLE
B = NON DECLUTCHABLE 0 1 2 3 4
120VAC 12VDC 24VDC 24VAC 220VAC
X - DESIGNATES THE SPEED
X = 0 1 2 2 3 4 5 6
SEC = 60 30 18 15 10 6 8 90
Z - DESIGNATES THE VOLTAGE
Z=
VOLTAGE=
5 6 7 8
380V 400V 440V 480V
3-PH 3-PH 3-PH 3-PH
BRAY Series 70 Electric Actuator
Operation and Maintenance Manual
3

Ma n u a l Ov e r r i d e OP e r a t i O n (de c l u t c h a b l e )
The manual override operates similar to a watch adjusting
knob. To engage the manual override, simply pull the hand-
wheel to its outermost position.Ayellow stripe is revealed for
visual indication that the unit cannot run electrically. The two
handwheel positions, engaged and disengaged, are held in
placewiththeuseof spring plungers.Thehandwheelremains
in position until physically moved. Rotating the handwheel
in the clockwise direction will rotate the output shaft in the
same clockwise (closed) direction and vice-versa.
CAUTION
A label on the handwheel hub warns users not to exceed
a specic rim pull force, for each size of actuator. If the rim
pull force is exceeded, the roll pin securing the handwheel
onto the manual override shaft is designed to shear, thus
preventing more serious internal gearing damage.
Pr e -in S t a l l a t i O n St O r a g e
Units are shipped with two metal screw-in plugs in order to
prevent foreign matter from entering the unit.
NOTICE
To prevent condensation from forming inside these units,
maintain a near constant external temperature and supply
power to the optional heater internal to the unit.
In S t a L L a t I o n
MO u n t i n g t O ava l v e
All Bray Series 70 electric actuators are suitable for direct
mounting on Bray buttery valves. With proper mounting
hardware, the S70 actuator can be installed onto other
quarter-turn valves or devices.
NOTICE
The standard mounting position for the actuator is to orient
the unit with its handwheel in a vertical plane and parallel to
the pipeline. If the actuator is to be mounted on a vertical
pipe, it is recommended that the unit be positioned with the
conduit entries on the bottom to prevent condensation from
entering the actuator by way of the conduit. In all cases, the
conduit should be positioned to prevent drainage into the
actuator.
The actuator should be mounted to the valve as follows:
1. Manually operate the actuator until the output shaft of
the actuator is in line with the valve stem. If possible,
select an intermediate position (i.e. valve disc/stem and
actuator both half open).
2. Place the proper adapter, if required, onto the valve
stem. It is recommended that a small amount of grease
be applied to the adapter to ease assembly.
3. Mount the actuator onto the valve stem. It may be
necessary to swing or manually override the actuator
to align the bolt patterns.
4. Install the furnished mounting studs by threading them
all the way into the actuator base.
5. Fasten in place with the furnished hex nuts and lock
washers.
fi e l d Wi r i n g
WARNING
Turn off all power and lock out service panel before install-
ing or modifying any electrical wiring.
Each actuator is provided with two (2) conduit entries (one
for power and one for control).
1. The motor full load current is noted on the nameplate
of the actuator. The terminal strip will accept wire sizes
ranging from 14 to 22 AWG (14 to 24 AWG for the
servo).
NOTICE
18 AWG minimum wire is recommended for all eld wiring.
Note that the optional heaters use approximately 0.5 amps
at 110 volts.
2. All actuators have their applicable wiring diagram
attached to the inside of the cover. Field wiring
should be terminated at the actuator terminal strip in
accordance with this wiring diagram.
NOTICE
Theconduitconnectionsmustbeproperlysealedtomaintain
the weatherproof integrity of the actuator enclosure.
!
!
BRAY Series 70 Electric Actuator
Operation and Maintenance Manual
4

TP TP TP TP
OPEN
MOTOR
CLOSE
CAPACITOR CAPACITOR
CLOSE
MOTOR
OPEN
SPDT
CONTACT
INCORRECT
TWO SPDT
CONTACTS
CAPACITOR
CLOSE
MOTOR
OPEN
CAPACITOR
MOTOR
OPEN
CLOSE
CORRECT
No. 1 No. 2 No. 2No. 1
122 22
33 33
111
CAUTION
Do not reverse motor instantaneously when it is still running-
Reversing direction to actuator motor when it is running can cause
damage to motor, switches and gearing. Directional control switch-
ing can be done by PLC in 20ms or by a small relay in 45ms.
Therefore time delay of 1s has to be incorporated into the control
scheme to avoid damage.*
*
Refer to Technical Bulletin 1176 for more details on Field Wiring.
Mu l t i P l e ac t u a t O r (Pa r a l l e l ) Wi r i n g
CAUTION
DonotconnectmorethanoneS70actuatortoasingleSPDTswitch.
A voltage is present on the opposite winding to the powered one. If
this winding is connected to another as shown in the INCORRECT
diagram it will interfere with the motor performance. Use a multiple
pole switch as shown in the CORRECT diagram.*
tr a v e l li M i t SW i t c h a n d Me c h a n i c a l tr a v e l St O P
ad j u S t M e n t
CAUTION
Theelectrical travel switchesmust besettoactivate(depress)
prior to reaching the mechanical travel stops. The cams are
color coded (green for open, red for closed).
NOTE: Manual travel stops are designed to prevent manual
overtravel from turning the handwheel, not to stop the elec-
tric motor. The travel stops have an adjustment range of
approximately 10-degrees.
cl O S e tr a v e l SW i t c h a d j u S t M e n t
1. Loosen the mechanical stop for the closed position and
back it off so that it does not interfere with actuator travel
(closed stop located on right when viewed from travel
stop side of actuator).
2. Remove the indicator rotor by pulling up it straight up
away from the indicator shaft. This will expose the
machined groove on the end of the cam shaft, which
is the reference to the valve disc position.
NOTE: For Sizes 130 and 180, ignore steps 2 and 6.
The valve position indicator plate on the lower gearbox
is the reference to the valve position.
3. Manually operate the actuator handwheel clockwise until
the valve reaches the desired fully closed position.
4. Rotate the red adjusting knob by hand or with a at head
screwdriveruntilthecamlobejustactivates(depresses)
the switch from a clockwise direction.
NOTICE: All continuous duty actuators have a cam
locking screw. Cam locking screw must be slackened
before cam adjustments and re-tightened after cam
adjustments.
*Refer to SK-081149 for more details
NOTE: It is possible that the rotation of one cam will
move the other cam. If this occurs, hold the other knobs
or cams during adjustment.
5. With the travel switch in the closed position, rotate the
handwheelclockwise1/4to1/2aturn.Adjust the closed
travel stop bolt until it bottoms against the output gear
and lock it in position with the locknut.
6. Afteralltravelswitchadjustmentshavebeencompleted,
replace the indicator rotor and secure the actuator
cover.
!
!
!
BRAY Series 70 Electric Actuator
Operation and Maintenance Manual
5

OP e n tr a v e l SW i t c h a d j u S t M e n t
1. Loosen the mechanical stop for the open position and
backitoff,sothatitdoesnotinterferewithactuatortravel.
The open stop is located on the left, when viewed from
travel stop side of actuator.
2. Remove the indicator rotor by pulling it straight up away
from the indicator shaft. This will expose the machined
groove on the end of the cam shaft, which is the refer-
ence to the valve disc position.
NOTE: For Sizes 130 and 180, ignore steps 2 and 6.
The valve position indicator plate on the lower gearbox
is the reference to the valve position.
3. Manually operate the actuator handwheel counter-
clockwise until the valve reaches the desired open
position.
4. Rotate the green adjusting knob until the cam lobe just
activates(depresses)theswitchfromacounterclockwise
direction.
NOTICE: All continuous duty actuators have a cam
locking screw. Cam locking screw must be slackened
before cam adjustments and re-rightened after cam
adjustments.
*Refer to SK-081149 for more details
NOTE: It is possible that the rotation of one cam will
move the other cam. If this occurs, hold the other knobs
or cams during adjustment.
5. With the travel switch in the open position, rotate the
handwheel counterclockwise 1/4 to 1/2 a turn. Adjust
the open travel stop bolt until it bottoms against the
output gear and lock in position with the locknut.
6. After all travel stop adjustments have been completed,
replace indicator rotor and secure the actuator cover.
DI S a S S e m b L y a n D aS S e m b L y
tO O l S r e q u i r e d :
See Appendix A for a complete list of basic tools
Pr O c e d u r e :
WARNING
Turn off all power and lock out service panel before installing
or modifying any electrical wiring.
1. Disconnect motor wires from the main terminal strip
(motor neutral, open, and close).
2. Remove the switchplate by unscrewing the seven phil-
lips head mounting screws. The switchplate should lift
out as an assembly with the camshaft attached.
3. The switchplate can be independently disassembled.
4. To remove the Gearmotor, rst disconnect the motor
leadswhichruntothe capacitor, and unscrew the mount-
ing screws for size 003-005 (two lower, one upper) for
size 008-180 (four lower, one upper). The motor can
now be removed vertically out of the unit. Note: do not
misplace the alignment pin.
5. To remove the worm shaft spur gear, remove the spring
pin using a 3/32”punch, then slide the gear off the end of
the worm shaft for size 003-020. Remove bowed E-clip
retainer for size 030-180.
6. To remove the output drive worm gear, back off both
mechanical travel stops. Remove the retaining ring and
thrust washer, then lift the output drive worm gear out
of its base.
7. The handwheel is held by a spring pin.
NOTE 1: Assembly is
the opposite of removal
NOTE 2: Pictures shown
for size 003-005 are typi-
cal for all sizes
!
6
BRAY Series 70 Electric Actuator
Operation and Maintenance Manual

7
fI e L D orfa c t o r y In S t a L L a b L e oP t I o n S
tO r q u e SW i t c h e S
Torque switches are a factory installed and calibrated option
available for all Series 70 units. Installation is simple, but
due to the requirement for special calibration equipment, it
is not recommended for eld installation. In fact, modifying
the factory torque setting voids the actuator warranty. The
unique mechanism is extremely accurate and has excellent
repeatability. The worm is pinned to the worm shaft, which
is held in position with a stack of disc springs at both ends.
The torque transmitted through the worm to the output worm
gear acts directly against the disc springs, which compress
proportionately.Thewormandwormshaftshiftlongitudinally
as a result. A specially designed drive lever and pin is incor-
porated into the worm, providing the prole for the torque
switching mechanism. A
drive lever & pin rides in the
worm gear torque sensor
groove, and in turn drives
a cam. The cam then actu-
ates its electrical switch,
which interrupts the power
to the motor winding when
the torque exceeds the
setting. The motor can still
be powered to run in the
opposite direction, or if the torque diminishes, the switch
will release automatically.
tO r q u e SW i t c h Me c h a n i S M
BRAY Series 70 Electric Actuator
Operation and Maintenance Manual
TORQUE SWITCH MECHANISM
CAUTION
8. Further disassembly of the unit requires special tools
and procedures, and thus will not be covered in this
manual.
!

8
BRAY Series 70 Electric Actuator
Operation and Maintenance Manual
he a t e r
To prevent condensation from forming inside the actuator,
Bray offers an optional heater. The heater is a PTC (Positive
Temperature Coefcient) style which has a unique tempera-
ture - resistance characteristic. The heater self-regulates by
increasing its electrical resistance relative to its temperature.
The heater does not require external thermostats or switches
to control its heat output. It is constructed of a polycrystalline
ceramic,sandwichedbetweentwoconductors,andwrapped
inside a thermally conductive electrical insulator.
Connect the heater wires to the terminal strip as indicated
on the wiring diagram.
NOTE: The heater must have a constant power supply to
be effective.
WARNING
The heater surface can reach temperatures in excess of
200 degrees Celsius
he a t e r Ki t cO n S i S t S O f :
1 Heater with ying leads
2 Heater Mounting Bracket
3 #10 pan head screw, phillips drive
tO O l S r e q u i r e d :
• For terminal wiring: Screwdriver, 3/16” tip at blade
• For heater mounting screw: Screwdriver, No.1 phillips
in S t a l l a t i O n P r O c e d u r e :
The heater is mounted through a hole provided in the
switchplate.
Before servicing unit, switch all power off at the service
panel and lock the service disconnecting means to pre-
vent power from being switched on accidentally. When the
service disconnecting means cannot be locked, securely
fasten a prominent warning device, such as a tag, to the
service panel.
Disconnect all power to the unit.
1 Place the heater snugly into its mounting bracket until
approx. 1/2 to 1”is left above the bracket as shown in
diagram.
2 Slip the heater into its mounting hole.
3 Align the fastening hole in the bracket with the
threaded screw hole in the plate. Fasten the heater to
the switchplate.
4 Connect the heater wires to the terminal strip as
indicated on the wiring diagram.
Se r v O -Pr O MO d u l e
Servo kits can be eld installed on any continuous duty actua-
tor (30 or 60 sec. operation speed) to provide proportional
positioning in response to a control signal. Intermittent duty
actuators are not adaptable for servo control.
Se r v O Ki t cO n S i S t S O f :
1 One servo module
2 Four #6 cross drive pan head screw (two for servo,
two for pot)
3 One potentiometer assembly
4 Two #6 type A internal lockwashers (for pot)
5 One wiring diagram sticker for attaching to inside
of actuator’s cover
6 One wiring diagram sticker for servo units with
torque switches
tO O l S r e q u i r e d :
• For actuator terminals wiring Screwdriver, 3/16” atblade
• For servo terminals Screwdriver, No.1 phillips
• For servo and pot mounting screws Screwdriver,
No.2 phillips
in S t a l l a t i O n Pr O c e d u r e :
!

9
BRAY Series 70 Electric Actuator
Operation and Maintenance Manual
Disconnect all power to the unit.
Remove the on/off duty, 9 point terminal strip
and its marker
1 Disconnect all wiring to the terminal strip.
2 All wiring in the actuator is color coded to facilitate
wiring, and does not need to be tagged or marked.
3 Field wiring should be marked if it is not already
color coded.
Mount the servo module
4 Secure the servo card module onto switchplate
with the 2X #6 screws.
Install the potentiometer assembly
5 The potentiometer installs next to the camshaft
where there are two threaded holes provided.
6 The potentiometer assembly must be mounted in the
correct orientation, with the actuator in its fully open
(counter clockwise) position, the indicator shaft should
be in-line with raised green rib on pot gear.
7 Push the assembly towards the cam to mesh the pot
gears. Then tighten the mounting screws.
Note: Sizes 130 and 180, the raised green rib on
pot gear should be aligned with arrow on lower gear
box’s position indicator plate.
Wire the pot to the servo
8 Connect the pot wires into the terminal strip on the servo
module.
9 Wire according to the wiring diagram provided.
Wire the servo to the actuator
10 Wire according to the wiring diagram provided.
11 See the servo calibration instructions.
Se r v O ca l i b r a t i O n
The calibration procedure denes the limits of operation of
the Series 70 Actuator between the fully open valve position
and the fully closed valve position. The cams on the Series
70 Actuator dene the fully open and closed positions of the
valve and may be set at any degree of opening. The only
requirement is that the open cam limit setting must set at a
higher degree of opening than the closed cam limit setting.
In other words, the “Open”position must be more open than
the “Closed”position.
Calibration is performed as follows:
1 Adjust the Open and Closed limit switch cams
on the Series 70 Actuator to the desired position.
2 Engage the handwheel and move the Series 70
Actuator to its mid position.
NOTE:
An analog signal source is not required for calibration.
Press and hold the “Calibrate”Set pushbutton for a
minimum of 2 seconds. When the servo begins to drive
the actuator closed, release the button. The servo will
now seek both travel limits and record these values to its
nonvolatile memory. Following a successful calibration,
the status LED will begin to ash a steady single green
ash. If the calibration is unsuccessful the status LED
will ash two green ashes. If this occurs, make sure
the cams and the potentiometer are set correctly.
This completes the “Self Calibration”procedure.
After completingthecalibrationprocedure,itisgood practice
toapplythefullyclosedandfullyopenCommandSignals,and
verify that the S70 Actuator moves to the proper positions.
* Refer to Servo Pro Manual for more details
MOTOR
OPEN
1
ON
MOTOR
CLOSE
FUSE
NEUTRAL
NEUTRAL
LINE Power
OUTPUT (+)
OUTPUT (-)
+5 VDC
INPUT (+)
INPUT (-)
OPEN
LIMIT
CLOSE
LIMIT
COMMON
COMMON
HANDWHEEL
CALIBRA T ESTATUS
+5 VDC
COMMON
FB POT
HIGH
VOLT A GE
SERVO
210987 6543
PRO
HEATER
DEAD BAND
CLOSE SPEED
OPEN
SPEED
CLOSE
OPEN
COMMON
TORQUE LIMIT
CLOSE
OPEN
COMMON
CONTROL BOX
S10 S9 S8 S7 S6
S5 S4 S3 S2 S1
Green Rib

10
BRAY Series 70 Electric Actuator
Operation and Maintenance Manual
ex t e r n a l Si g n a l fe e d b a c K PO t e n t i O M e t e r
Potentiometers for external feedback can be eld installed
on all continuous duty actuators. Actuators which are not
continuous duty do not have a pot gear tted on their indicator
shafts & must be tted with a new shaft which has a pot drive
gear for feedback pot (see Options: Auxiliary Switches).
fe e d b a c K PO t e n t i O M e t e r Ki t c O n S i S t S O f :
1 One potentiometer assembly
2 Two #6 cross drive pan head screws
3 Two #6 internal lockwashers
4 One 4 point terminal strip
5 One terminal strip marker for feedback pot
6 One small wiring diagram sticker for the
additional potentiometer
tO O l S r e q u i r e d :
• For terminal wiring Screwdriver, 3/16” tip at blade
• For pot mounting screws Screwdriver, No.2 phillips
in S t a l l a t i O n P r O c e d u r e :
1 The potentiometer installs next to the camshaft where
there are two threaded holes provided for it.
2 The potentiometer assembly must be mounted in the
correct orientation, with the actuator in its fully open
(counter clockwise) position, the indicator shaft should
be in-line with raised green rib on pot gear.
3 Push the assembly towards the cam to mesh the pot
gears. Then tighten the mounting screws.
4 Fit the 4 point terminal strip and marker in the kit. Before
laying down the marker, cut it to obtain a marker as il-
lustrated: opposite
5 Wire the pot to the terminal strip using the small stick-on
wiring diagram provided.
6 Adhere the wiring diagram sticker to the inside of
the cover.
Se t t h e PO t e n t i O M e t e r :
1 Manually operate the actuator handwheel until the unit
is in the fully closed position.
2 Rotate the black potentiometer drive gear adjustment
knob, to engage the potentiometer gear at the
closed position.
3
Manually operate the actuator to the fully open position.
au x i l i a r y S W i t c h e S
Auxiliary switches are available / refer to chart on next page.
NOTES:
1 All auxiliary switches have voltage -free contacts.
2 Size 6, 12, and 30 have double lobe cams. Sizes 130
and 180 has single lobe cams.
3 Main switches are one OPEN and one CLOSE switch.
4 Auxiliary switches are one OPEN and one CLOSE
switch, which are xed to activate 3°before the
main switches.
5 Adjustable auxiliary switches are adjustable to
any position.
in S t a l l a t i O n P r O c e d u r e
1 Cut terminal strip marker to length needed with letters
facing up.
2 Mount terminal strip and marker to switchplate using
two #4-40 screws.
Aux Terminal Strip
178 9
2 3 4 5 6
D
C
B
A
Cut marker as
needed (4-way
shown as example)
and mount to
switchplate as
shown.
Green Rib

11
BRAY Series 70 Electric Actuator
Operation and Maintenance Manual
cO n f i g u r a t i O n Si z e 6 Si z e 12 & 30
1 ON/OFF (Intermittent Duty Motor) with Main 2 Switch 2 Switch
Switches (Standard OPEN and CLOSE switches) 2 Cams 2 Cams N/A
Standard Assembly P/N Standard Assembly P/N
2ON/OFF (Continuous Duty Motor) with Main 2 Switch 2 Switch 2 Switch
Switches (Standard OPEN and CLOSE switches) 2 Cams 2 Cams 2 Cams
& Pot Gear & Pot Gear & Pot Gear
Standard Assembly P/N Standard Assembly P/N Standard Assembly P/N
3ON/OFF (Intermittent Duty Motor) with Main 4 Switch 4 Switch
and 1 set of Auxiliary Switches 2 Cams 2 Cams N/A
Kit P/N 70-0006-22980-536 Kit P/N 70-0012-22960-536
4ON/OFF (Continuous Duty Motor) with Main 4 Switch 4 Switch 4 Switch
and 1 set of Auxiliary Switches 2 Cams 2 Cams 4 Cams
& Pot Gear & Pot Gear
Kit P/N 70-0006-22980-536 Kit P/N 70-0012-22960-536
5ON/OFF with Main, 1 set of Auxiliary, and 5 Switch 5 Switch
1 Adjustable Auxiliary Switches 3 Cams 3 Cams N/A
Kit P/N 70-0006-22983-536 Kit P/N 70-0012-22963-536
6ON/OFF with Main, 1 set of Auxiliary, and 6 Switch 6 Switch
1 set of Adjustable Auxiliary Switches 3 Cams 3 Cams N/A
Kit P/N 70-0006-22984-536 Kit P/N 70-0012-22964-536
7ON/OFF with Main, 1 set of Auxiliary, and 6 Switch
2 Adjustable Auxiliary Switches N/A 4 Cams N/A
Kit P/N 70-0012-22961-536
8ON/OFF with Main, 1 set of Auxiliary, and 8 Switch
2 sets of Adjustable Auxiliary Switches N/A 4 Cams N/A
Kit P/N 70-0012-22962-536
9Servo with Main, 1 set of Auxiliary, and 5 Switch
1 Adjustable Auxiliary Switches N/A 3 Cams & 1 Pot Gear N/A
Kit P/N 70-0012-22966-536
10 Servo with Main, 1 set of Auxiliary, and 6 Switch
1 set of Adjustable Auxiliary Switches N/A 3 Cams & 1 Pot Gear N/A
Kit P/N 70-0012-22967-536
11 ON/OFF with Main and 1 Adjustable 3 Switch 3 Switch 3 Switch
Auxiliary Switches 3 Cams 3 Cams 3 Cams
Kit P/N 70-0006-22988-536 Kit P/N 70-0012-22968-536
12 Servo with Main and 1 Adjustable 3 Switch 3 Switch
Auxiliary Switches N/A 3 Cams & 1 Pot Gear 3 Cams
Kit P/N 70-0012-22971-536 1 Pot Gear
Si z e 180

12
BRAY Series 70 Electric Actuator
Operation and Maintenance Manual
Wiring diagram for basic unit with C-Form (SPDT) travel switches. (Drawn
for actuator in its fully closed condition.)
Wiring diagram for unit with one set of “Voltage Free” C-Form (SPDT) open/close travel switches.
(Drawn for actuator in its fully closed condition.)
Actuator ‘C’-Form Switches, SPDT
Field Wiring Actuator
Field Wiring Actuator
Size-12 & 30
V3-Sw with
Lever
COM.
N.C.
N.O.
Size-6
V3-Sw
N.C.
N.O.
COM.
NOT TO EXCEED
500 OHMS
FIELD WIRING
5 VDC AT 50mA (IF REQUIRED)
POSITION
FEEDBACK
DEVICE
LOAD DEVICE
INCOMING COMMAND SIGNAL
+
OUTGOING FEEDBACK SIGNAL
-
+
NEUTRAL
LIVE
MOTOR
N
C
OR BLACK
YELLOW
O
ACTUATOR
RED
BLUE
POTENTIOMETER
GREY +
OVERRIDE SW
WHITE
ORANGE
-
YELLOW
YELLOW
FEEDBACK
COM
N.O.
N.C.
MANUAL
AUX CLOSE
COM
N.O.
CLOSE
N.C.
N.O.
AUX OPEN
GREEN
CAM
COM
RED
CAM
N.C.
OPEN
COM
N.C.
N.O.
N.C.
COM
N.O.
BLUE
C
BLUE
D
B
A
RED
RED
(VOLTAGE FREE)
(VOLTAGE FREE)
CLOSE N.O.
OPEN N.O.
BLUE
BLUE
RED
RED
HEATER
(OPTIONAL)
(SEE NOTE 3)
(SEE NOTE 4)
MOTOR
OPEN
1
ON
MOTOR
CLOSE
FUSE
NEUTRAL
NEUTRAL
LINE Power
OUTPUT (+)
OUTPUT (-)
+5 VDC
INPUT (+)
INPUT (-)
OPEN
LIMIT
CLOSE
LIMIT
COMMON
COMMON
HANDWHEEL
CALIBRAT ESTATUS
+5 VDC
COMMON
FB POT
HIGH
VOLTAGE
SERVO
210987 6543
PRO
HEATER
DEAD BAND
CLOSE SPEED
OPEN
SPEED
CLOSE
OPEN
COMMON
TORQUE LIMIT
CLOSE
OPEN
COMMON
CONTROL BOX
S10 S9 S8 S7 S6
S5 S4 S3 S2 S1
*
E
F
GROUND
SINGLE PHASE
POWER SUPPLY
WHITE
BLACK
-
+
CALIBRATION SEQUENCE:
1. SET TRAVEL LIMIT SWITCHES
TO DESIRED END OF TRAVEL POSITIONS.
2. CONNECT POWER SUPPLY.
3. WITH ACTUATOR AT MID TRAVEL
PRESS "CALIBRATE" BUTTON FOR TWO SECONDS.
4. ACTUATOR WILL SELF-CALIBRATE.

13
BRAY Series 70 Electric Actuator
Operation and Maintenance Manual
NOT TO EXCEED
500 OHMS
FIELD WIRING
5 VDC AT 50mA (IF REQUIRED)
POSITION
FEEDBACK
DEVICE
LOAD DEVICE
INCOMING COMMAND SIGNAL
+
OUTGOING FEEDBACK SIGNAL
-
+
NEUTRAL
LIVE
MOTOR
N
C
OR BLACK
YELLOW
O
ACTUATOR
RED
BLUE
POTENTIOMETER
GREY +
OVERRIDE SW
WHITE
ORANGE
-
YELLOW
YELLOW
FEEDBACK
COM
N.O.
N.C.
MANUAL
AUX CLOSE
COM
N.O.
CLOSE
N.C.
N.O.
AUX OPEN
GREEN
CAM
COM
RED
CAM
N.C.
OPEN
COM
N.C.
N.O.
N.C.
COM
N.O.
BLUE
C
BLUE
D
B
A
RED
RED
(VOLTAGE FREE)
(VOLTAGE FREE)
CLOSE N.O.
OPEN N.O.
BLUE
BLUE
RED
RED
HEATER
(OPTIONAL)
(SEE NOTE 3)
(SEE NOTE 4)
MOTOR
OPEN
1
ON
MOTOR
CLOSE
FUSE
NEUTRAL
NEUTRAL
LINE Power
OUTPUT (+)
OUTPUT (-)
+5 VDC
INPUT (+)
INPUT (-)
OPEN
LIMIT
CLOSE
LIMIT
COMMON
COMMON
HANDWHEEL
CALIBRAT ESTATUS
+5 VDC
COMMON
FB POT
HIGH
VOLTAGE
SERVO
210987 6543
PRO
HEATER
DEAD BAND
CLOSE SPEED
OPEN
SPEED
CLOSE
OPEN
COMMON
TORQUE LIMIT
CLOSE
OPEN
COMMON
CONTROL BOX
S10 S9 S8 S7 S6
S5 S4 S3 S2 S1
*
E
F
GROUND
SINGLE PHASE
POWER SUPPLY
WHITE
BLACK
-
+
CALIBRATION SEQUENCE:
1. SET TRAVEL LIMIT SWITCHES
TO DESIRED END OF TRAVEL POSITIONS.
2. CONNECT POWER SUPPLY.
3. WITH ACTUATOR AT MID TRAVEL
PRESS "CALIBRATE" BUTTON FOR TWO SECONDS.
4. ACTUATOR WILL SELF-CALIBRATE.
Wa r n i n g : Tu r n aLL Po W e r of f P r i o r T o a d j u s T i n g diP s W i T c h e s .
SW i t c h cO M M a n d in P u t
4-20 mA DC 0-5 vdc * 0-10 vdc 2-10 vdc
1 Off On On On
2 Off Off On On
3Off Off Off On
Ou t P u t
4-20 mA DC 0-5 VDC 0-10 VDC 2-10 VDC
4 Off On On N/A
5 On Off Off N/A
6Off On Off N/A
fO r W a r d ac t i n g re v e r S e ac t i n g
7 Off On
fa i l i n
la S t PO S i t i O n fa i l en a b l e **
8 Off On
fa i l cl O S e fa i l OP e n
9 Off On
tO r q u e tO r q u e
SW i t c h en a b l e SW i t c h di S a b l e
10 Off On
*To control servo with a remote potentiometer, set the Command Input to 0-5VDC (see Command Signal Con-
nector section; page 8 Servo Pro Manual).
**Fail position is the position that the servo will travel to when the control signal is removed. It does not apply
to 0-5VDC or 0-10VDC Command Signals.

14
BRAY Series 70 Electric Actuator
Operation and Maintenance Manual
i. ad j u S t t h e OP e n a n d cl O S e SP e e d O f y O u r a c t u a t O r (th e f a S t e S t c l O S i n g S P e e d O f y O u r
a c t u a t O r i S P r i n t e d O n t h e l a b e l O f t h e u n i t ):
1. Use the Close Speed trim pot to adjust the closing speed of your actuator (pot in the fully
CCW position = fastest close speed).
2. Use the Open Speed trim pot to adjust the opening speed of your actuator (pot in
the fully CCW position = fastest open speed).
ii. ca l i b r a t e t h e S e r v O :
1. Manually position your actuator somewhere in mid position; away from the travel limits.
2. Disengage your handwheel (push it back in towards the actuator), hold down the Calibration push
button for two seconds and release, the servo will begin to drive the actuator in the close
direction and then in the open direction in order to save these limits to memory.
3. Following a successful calibration the servo’s Status LED will begin to ash the normal operation code, an
unsuccessful calibration will yield a Red-Green-Red-Green ash immediately following the attempted calibration
(for more information on the Status LED ash codes see the Status LED Flash Code Table).
St a t u S led
The “Status LED” is a bi-color LED which provides detailed information regarding the operation of the S70 Servo Pro.
Table 2 below illustrates the different combinations of LED ash codes and their corresponding conditions. Following the
table is a more descriptive explanation of the Flash Code. Whenever the LED is ashing green, regardless of the ash
code, the servo will operate, but not necessarily optimally. Whenever the LED ash codes are RED, the servo will not
operate. An example is an engaged handwheel, the Status LED will ash a single red ash code and will not operate.
ta b l e 2: St a t u S led f l a S h c O d e S
gr e e n St a t u S led W a r n i n g a n d i n f O r M a t i O n fl a S h cO d e S :
#in d i c a t i O n re a S O n SO l u t i O n
1 Steady Green Flash Normal Operation Servo Functioning Ok
2 2 Green Flashes Calibration Defaults Loaded Adjust travel limits, push autocalibration PB
3 3 Green Flashes Reverse Acting Mode If you would like your servo to not operate in reverse
acting mode, set DIP switch 7 accordingly
4 4 Green Flashes 2-10VDC Input Command Signal Selected If you require a different configuration, set DIP
switches 1, 2, and 3 accordingly
5 1 Red Flashes Handwheel engaged Push the Handwheel in towards the actuator
6 2 Red Flashes Command Signal Failure Set DIP switches accordingly, send servo ap-
propriate signal
7 3 Red Flashes Feedback Pot Fault Position the feedback Pot correctly, see Feedback
Pot calibration
8 4 Red Flashes Limit Switch Fault Check wiring of limit switches, ensure that both
switches are not tripped simultaneously
9 5 Red Flashes Torque Switch Fault
Ensure that DIP switch 10 is positioned correct,
check wiring of torque switches, reverse direction
of actuator, correct over torque condition
10 6 Red Flashes Feedback Pot Wired In Reverse Correctly wire the Feedback Pot
Note: A ashing green LED provides status and warning information. The servo will operate normally in this state. Some
ash codes indicate a warning, where the servo has recovered automatically such as the detection of an invalid cali-
bration. In this case, a default calibration is automatically loaded that will allow the Servo to operate, but may not be a
perfect match to the actuator. The servo should be re-calibrated as soon as possible.

15
BRAY Series 70 Electric Actuator
Operation and Maintenance Manual
re c e P t a c l e S (qu i c K cO n n e c t O r S )
Unless otherwise specied, power receptacles will be
5-pin mini style standard duty with a black anodized
aluminum nish. They conform to ANSI B93.55M except
in wire color. Euro receptacles will be used for low power
instrument and signal cable since they can be supplied
shielded. Wiring diagrams for plug-in receptacles for
either the Bray Series 70 or the local control station will
be provided as a separate diagram. Units ordered with
pin connector receptacles factory installed are wired
and tested. Cordsets which t these receptacles may be
ordered in several lengths.
re c e P t a c l e Ki t c O n S i S t S O f :
1) Receptacle(s), male pin and male thread 1/2”-NPT, in
the qty., style and number of pins ordered
Wi r i n g S c h e M a t i c f O r O P t i O n a l Pi n cO n n e c t O r re c e P t a c l e S
nO l.c.S.1With l.c.S.1
requireMentS recePtacleS req’d diagraM diagraM
On - Off unitS (i n t e r M i t t e n t O r c O n t i n u O u S )
PO W e r O n e M i n i SK-960517 SK-960515
PO W e r PO S i t i O n i n d i c a t i O n 2O n e M i n i O n e e u r O SK-960717 SK-960513
PO W e r PO S i t i O n i n d i c a t i O n 3O n e M i n i O n e e u r O SK-960516 SK-9607165
PO W e r fe e d b a c K P O t e n t i O M e t e r O n e M i n i O n e e u r O SK-960718 SK-960720
PO W e r PO S i t i O n i n d i c a t i O n 3fe e d b a c K P O t e n t i O M e t e r O n e M i n i 6-P i n e u r O 4SK-960719 n/a
Custom congurations are possible - consult the factory.
1 L.C.S.: Local Control Station , WHICH implies
mounted to the actuator
2Travel indication is wired to the supply voltage
3 Travel indication wiring is voltage free
4
A 6-pin EURO connector is required for this application,
consult factory for price and availability.
2) Reducing bushing 3/4”to 1/2” NPT for installation in
size 12 - 180 and control stations
3) Wiring diagram (SK-# below)
tO O l S r e q u i r e d :
• For terminal wiring Screwdriver, 3/16” tip at blade
• For Mini or Euro receptacle Wrench, 1”
in S t a l l a t i O n P r O c e d u r e :
1) Screw the receptacle into the actuator conduit entry
using teon tape or similar.
2) Wire to the terminal strip according to the wiring
diagram or the eld wiring requirements.
5 The Local Control Station comes standard with 120 Volt
lamp bulbs, for other voltages consult factory.
Note: the Control Station lights must be wired to the same
voltage as the remote end of travel indication.
Euro receptacles use 22 AWG wire rated at 250V, 4 Amp.
Pin conguration interfaces with European standards.
Mini receptacles use 18 AWG wire rated at 300 V, 9 Amp.
Pin conguration conforms to ANSI B93.55M.
* For requirements beyond these ratings consult
the factory.

16
BRAY Series 70 Electric Actuator
Operation and Maintenance Manual
SP i n n e r
A spinner is available to ease and speed the manual over-
ride of the Bray Series 70 actuator. The 300 and 500 in.lb.
units mount the spinner on a lever which screws onto the
back of the handwheel. The 800 through 18000 in.lb. units
mount the spinner on the rim of the handwheel. Note that
care should be exercised in the use of spinner equipped
handwheels. Rapid operation of the handwheel to close
the valve may cause water hammer. Also, rapid travel into
a travel stop may cause damage.
SP i n n e r Ki t c O n S i S t S O f :
For 300 and 500 in.lb. For 800 to 18000 in.lb. units
Spinner and lever assembly Socket head shoulder bolt,
Flat head socket cap screw, 1/4-20UNC x .75
#10-32UNF x 3/8 Spinner handle
tO O l S r e q u i r e d :
• For socket head shoulder bolt and at head capscrew
Hex key, 1/8” for 300 and 500 in.lb.
Hex key, 3/16” for 800 to 18000 in.lb.
in S t a l l a t i O n P r O c e d u r e :
• For 300 and 500 in.lb. units simply position the lever onto
the back of the handwheel then screw the at head cap
screw in to place from behind.
•For 800 up to 18000 in.lb. units, put the socket head
shoulder bolt through the spinner handle and screw it
rmly into the handwheel rim.
can be used on the on - off units and the servo controlled
modulating units. Optional key operated locking switches
are available.
Note: The control station used with On - Off S70 and that
used with modulating S70 have different contact blocks
internally, the correct part number must be used to ensure
you order the correct unit (see price sheet).
lO c a l cO n t r O l St a t i O n Ki t c O n S i S t S O f :
1 Local control station assembly
2 Four socket head cap screws, #10-24UNC x 4.50 long,
for mounting the station to the actuator
3 A gasket for sealing the station to the actuator
4 Wiring diagram
tO O l S r e q u i r e d :
• For tapping control station mounting holes on actuator,
#10-24UNC Tap.
• For wiring Screwdriver, 3/16” at blade.
• For mounting and cover screws Hex key, 5/32”
in S t a l l a t i O n P r O c e d u r e :
1. Tap #10-24UNC holes
using the cored holes
on the side of actuator.
2. Adhere the gasket tothe
control box.
3. Mount the control box
to the actuator using
the 4 long socket head
capscrews.
4. Wire the control box to the actuator in accordance to
the wiring diagram provided. The local control station
contains no terminal strips, and all wiring is direct to the
switches and lights via 2” x 3/4” NPT holes in bottom of
housing.
Ordering the control station with optional pin
connectorrecep-
tacles will elimi-
nate the neces-
sity of eld wiring.
The units will be
completely fac-
tory wired and
tested.
Note: The inclined
cover of the local
controlstationcanbe
mounted in any of its
four symmetrical po-
sitions. If eld wiring is required , rst mount the base to the
actuator, then remove the cover to gain access for wiring.
lO c a l cO n t r O l St a t i O n (Si n g l e Ph a S e PO W e r e d
ac t u a t O r S )
Bray’s local control station gives the user the ability to locally
override the actuator electrically. The station is open / stop /
close operation in the local control mode. Red and green end
of travel indication lights are also provided. Depending on how
it is wired the control station

17
BRAY Series 70 Electric Actuator
Operation and Maintenance Manual
aP P e n D I x a
ba S i c tO O l S
cO M M O n tOal l un i t S
Terminal connections, cam adjustment Screwdriver, 1/4” tip at tip blade
All switches, terminal strip, torque switch plate Screwdriver, No.1 phillips
Switchplate screws, capacitor Screwdriver, No.2 phillips
Servo trimmer pots Screwdriver, 1/8” at tip for trim pots
300-500 i n •l b u n i t S
Mounting nuts Wrench, 1/2”
Cover captivated capscrews Hex key, 1/4”
Travel stop adjusting bolts Wrench, 7/16”
Travel stop jam nuts Wrench, 7/16”
Motor mount socket at head capscrew Hex key, 3/32”
Motor mount socket head capscrew Hex key, 9/64”
800-1200 i n •l b u n i t S
Mounting nuts (small pattern) Wrench, 1/2”
Mounting nuts (large pattern) Wrench, 3/4”
Cover captivated capscrews Hex key, 5/16”
Travel stop adjusting bolts Wrench, 9/16”
Travel stop nuts Wrench, 9/16”
Motor mount socket head capscrew Hex key, 5/32”
3000-6500 i n •l b u n i t S
Mounting nuts, travel stop jam nuts Wrench, 3/4”
Cover captivated capscrews Hex key, 3/8”
Travel stop adjusting studs Wrench, 3/4”
Motor mount socket head shoulder bolt Hex key, 5/32”
Motor mount socket head cap screws Hex key, 3/16”
13000-18000 i n •l b u n i t S
Mounting nuts, travel stop jam nuts Wrench, 3/4”
Cover captivated capscrews Hex key, 3/8”
Travel stop adjusting studs Wrench, 15/16”
Motor mount socket head shoulder bolt Hex key, 5/32”
Motor mount socket head cap screws Hex key, 3/16”

18
BRAY Series 70 Electric Actuator
Operation and Maintenance Manual
aP P e n D I x b
ac t u a t O r tr O u b l e S h O O t i n g ch a r t
Pr O b l e M PO S S i b l e c a u S e SO l u t i O n S
Actuator does not operate Override is engaged Push handwheel in all the way
Wiring is incorrect Check wiring and power supply
Actuator motor has reached its Allow time to cool
thermal shutdown temperature
Actuator operates in reverse directions Field wiring is reversed Rewire eld wiring
Actuator does not fully close valve Limit switches are depressed Readjust travel limit switches
(or open valve) Mechanical travel stop is Adjust mechanical travel stops
stopping actuator
Valve torque requirement is Manually override out of seat, try
higher than actuator output angle seating or larger actuator
Optional torque switches Valve torque exceeds actuator are activating
torque rating - consult factory
Voltage power supply is low Check power source.
Engaging override handwheel does Override pin is corroded or Clean and check for smooth
not shut off motor damaged operation of the override switch pin
Override switch is damaged Replace switch
Disengaging override handwheel Not completely disengaged Push handwheel in as far as
does not restart motor possible (no yellow showing)
Override pin is damaged or Replace override pin
and does not activate switch
Incorrect wiring of override Check wiring
switch
Motor runs but worm and gear Worm gear segment is not Remove switchplate and inspect,
segment do not meshing with worm adjust travel stops to prevent gear
disengaging
Pin/Key on Worm/Motor Replace Pin/Key on drive gear
drive gear sheared
Corrosion inside unit Condensation forming Test heater wiring, should have
constant power
Water leaking in Check all seals and possible water
entry through conduit