SERIES 70

ELECTRIC ACTUATOR
Installation, Operation and Maintenance Manual

BRAY.COM THE HIGH PERFORMANCE COMPANY

 Series 70 Electric Actuator
Installation, Operation and Maintenance Manual

Table of Contents
Safety Instructions - Definition of Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Hazard-Free Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Qualified Personnel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Part Numbering System Reference Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Principle of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Electrical Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Mechanical Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Actuation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Manual Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Remote Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
S70 On/Off Actuator with Interposing Relay Board (I.R.B.) . . . . . . . . . . . . . . . . . . . . 4
Servo NXT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Mounting the Actuator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Wiring the Actuator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Setting Travel Limit Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Setting Mechanical Travel Stops . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Disassembly and Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Field or Factory Installable Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Auxiliary Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Torque Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Local Control Station . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Control Station Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Battery Backup Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Indication of Remote Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Spinner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Receptacles (Quick Connectors) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
External Signal Feedback Potentiometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Appendix A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Basic Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Appendix B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Actuator Troubleshooting Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Series 70 – Size 003, 006 – Electric Actuator Exploded View . . . . . . . . . . . . . . . . . . . . 20
Series 70 – Size 008, 012, 020 – Electric Actuator Exploded View . . . . . . . . . . . . . . . . . . 22
Series 70 – Size 030, 050, 065 – Electric Actuator Exploded View . . . . . . . . . . . . . . . . . . 24
Series 70 – Size 130, 180 – Electric Actuator Exploded View . . . . . . . . . . . . . . . . . . . . 26
Series 70 – Size 130, 180 – 3:1 Gear Box Exploded View . . . . . . . . . . . . . . . . . . . . . . 28

FOR MORE INFORMATION ON THIS PRODUCT AND OTHER BRAY PRODUCTS

PLEASE VISIT OUR WEBSITE – bray.com
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 Series 70 Electric Actuator
Installation, Operation and Maintenance Manual

Safety Instructions - Definition of Terms

READ AND FOLLOW THESE INSTRUCTIONS

SAVE THESE INSTRUCTIONS

indicates a potentially hazardous situation which, if not avoided, could

result in death or serious injury.

indicates a potentially hazardous situation which, if not avoided, may result

in minor or moderate injury.

indicates a potential situation which, if not avoided, may result in an

NOTICE
undesirable result or state, including property damage.

Hazard-Free Use Qualified Personnel

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
observed by the user to ensure hazard-free operation The actuator must only be installed, commissioned,
of this device. operated and repaired by qualified personnel.

All necessary precautions need to be taken to prevent Installation, commissioning, operation and mainte-
damage due to rough handling, impact, or improper nance must be performed under strict observation of
all applicable codes, standards and safety regulations.
storage. Do not use abrasive compounds to clean the
device, or scrape its surfaces with any objects. As per this document, a qualified person is one who
Configuration and setup procedures for this device is trained in:
are described in this manual. Proper configuration and • The operation and maintenance of electric
setup are required for the safe operation of this device. equipment and systems in accordance with
The control system in which this device is installed must established safety practices.
have proper safeguards to prevent injury to personnel, • Procedures to energize, de-energize, ground,
or damage to equipment, should a failure of system tag and lock electrical circuits and equipment in
components occur. accordance with established safety practices.
• The proper use and care of personal protective
equipment (PPE) in accordance with established
safety practices.
The device generates large mechanical force during
• First aid.
normal operation.
• 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.

Reference is specifically made here to observe all

applicable safety regulations for actuators installed in
potentially explosive (hazardous) locations.

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 Series 70 Electric Actuator
Installation, Operation and Maintenance Manual

Part Numbering System Reference Chart

Series Torque Code Speed Product Style Voltage Trim YZ - STYLE / VOLTAGE:

70 AAA X 113 Y Z TTT Imp. Metric

DA NA 120VAC Interposing Relay Board
Actuator Torque Torque Speed, ¼ Turn Supply
Part Number DB NB 220VAC Interposing Relay Board
Size In.Lbs Nm Seconds Z Voltage
DC NC 24VAC On/Off with Controller
S70-003 70-003X-113YZ-TTT 300 34 30/15 0/2/4
S70-006 70-006X-113YZ-TTT 600 68 30 0/2/3/4 DD ND 24VDC On/Off with Controller
S70-008 70-008X-113YZ-TTT 800 90 30/15/6 0/2/4 AA MA 120VAC Modulating with Servo Pro
S70-012 70-012X-113YZ-TTT 1200 136 30/15/6 0/2/4 AB MB 220VAC Modulating with Servo Pro
S70-020 70-020X-113YZ-TTT 2000 226 30/15 0/2/3/4 AC MC 24VAC Modulating with Servo Pro
S70-030 70-030X-113YZ-TTT 3000 339 30/18 0/2/4
AD MD 24VDC Modulating with Servo Pro
S70-050 70-050X-113YZ-TTT 5000 565 30/18 0/2/3/4
G0 R0 120VAC Modulating with Servo NXT
S70-065 70-065X-113YZ-TTT 6500 734 30 0/4
S70-130 70-13WX-113YZ-TTT 13000 1469 110 0/4 G2 R2 24VDC Modulating with Servo NXT
S70-180 70-18WX-113YZ-TTT 18000 2034 110 0/4 G3 R3 24VAC Modulating with Servo NXT
Use this chart as a guide to interpret the S70 electric actuator part number. G4 R4 220VAC Modulating with Servo NXT
Note: Not all combinations are possible.
NOTE: 220VAC units are 230VAC compatible

W - DESIGNATES X - DESIGNATES Y - DESIGNATES Z - DESIGNATES THE TTT - DESIGNATES

THE OUTPUT THE SPEED STYLE VOLTAGE THE PRODUCT TRIM
BORE Imp. Metric
X: 0 1 2 6 0 2 3 4 536 Standard Bray Red
DIAMETER Z:
Sec: 60 30 15/18 110 G R Servo NXT A D C B 5F5 Bray Seacorr Coating
2.5 Inches
0 D N I.R.B. On/Off
[63.5 mm]
Voltage:

120VAC

220VAC
24VDC

24VAC

1.97 Inches A M Servo Pro

1
[50 mm]

Units of measure designation = Imperial [Metric]

Introduction (DC power). Travel limit switches are mechanical form

(SPDT) with contacts rated at 10 Amp (0.8 PF), 1/2 HP
The Bray Series 70 is a quarter turn electric actuator
125/250 VAC.
with manual override for use on any quarter turn valve
requiring up to 18000 in-lb [2034 Nm] of torque. In cases where the torque capacity of the unit is
Operating speeds vary between 15 to 110 seconds. exceeded to the point where the motor stalls, a thermal
protector switch, built into the PSC motor windings,
Principle of Operation
will automatically disconnect the motor power and
The Series 70 actuator is divided into two internal prevent overheating. Once the motor cools sufficiently,
sections, the power center below the switch plate, the thermal protector switch will reset automatically.
and the control center above the switch plate. Below
the switch plate, the gear motor, with its spur gear Optional torque switches are available in all units
train, drives a non-backdriveable worm gear output. to prevent the possibility of stalling the motor, thus
The override mechanism for manual operation is also reducing the possibility of an inoperable thermal cool
housed here. Above the switch plate is where user down period. Torque switches, installed by Bray, are
required readily accessible components are placed. The factory adjusted to the output torque rating of the unit
indicator shaft assembly, limit switches, terminal strips, using electronic torque testing equipment.
torque switches, heater, and electronic controllers are Mechanical Operation
all placed here for easy access.
Mechanically, the ratio of the gear motor determines the
External to the unit are adjustable mechanical travel speed of the unit. The gear motor utilizes high efficiency
stops, a large and easy to read indicator, the unique spur gears with various ratios for the different speeds.
manual override handwheel, and dual conduit entry Initial gear reduction through the spur gears is then
ports. The external coating is a high-quality polyester transferred to the worm shaft. The final gear reduction
powder coat which has exceptional UV protection and and output is through a non-backdriveable worm gear
chemical resistance. set. Positioning is determined by an indicator/cam shaft,
Electrical Operation which is linked to the output shaft. In the declutchable
condition, the manual override drives the worm shaft
The gear motors used in the Bray Series 70 are of when engaged.
either permanent split capacitor (PSC) design (single
phase AC power) or permanent magnet (PM) design
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 Series 70 Electric Actuator
Installation, Operation and Maintenance Manual

Actuation
Manual Operation Remote Operation
The manual override operates similar to a watch
adjusting knob. To engage the manual override, simply
pull the handwheel to its outermost position. A yellow
stripe is revealed to visually indicate manual override 1. Verify that the main electric power supplied to the
actuator is in compliance with the specifications on
engagement as shown in Figure 1. The two handwheel the actuator label.
positions, engaged and disengaged, are held in place
with the use of spring plungers. The handwheel remains 2. Engaging the handwheel before or during the
application of a supply voltage will prevent the
in position until physically moved. actuator motor from operating.
3. If torque switches are installed in the actuator, an
Yellow Stripe over-torque condition will prevent the actuator
motor from operating in the direction of fault.

S70 On/Off Actuator with Interposing Relay

Board (I.R.B.)
The back feeding of one actuator by another one
wired in parallel is eliminated by using the I.R.B. If
actuator is running Open and customer switches
“instantaneously” to run Closed, the Open relay will
Figure 1 - Handwheel is engaged, revealing the yellow stripe. take time to ‘drop-out’ and the Close relay will take
Once the manual override is engaged, rotating the time to ‘pull-in’ this time lapse is ~ 40ms. The time
handwheel in the clockwise direction will rotate the delay provided by the I.R.B. will protect the switches
output shaft in the clockwise (close) direction and and gears from the controller’s instantaneous command
vice-versa. signal reversal. Current draws and field wirings are not
affected by adding I.R.B.
To disengage the manual override, the handwheel needs
to be pushed towards the actuator until the ‘yellow S70 120VAC I.R.B., auxiliary switch, heater, and torque
stripe’ is hidden. switch option are UL certified units
NOTE: The host controller should use a one second
time delay for command signal reversal.

A label on the handwheel hub warns users not to

exceed a specific ‘rim pull’ force, for each size of
actuator. Apply voltage to only one direction terminal at a time.
If the ‘rim pull’ force is exceeded, the roll pin securing
the handwheel onto the manual override shaft is
designed to shear, thus preventing serious internal
gearing damage.

Figure 2 - S70 with I.R.B.

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 Series 70 Electric Actuator
Installation, Operation and Maintenance Manual

FIELD WIRING ACTUATOR

N.C.
N COM
YELLOW BLUE
1 YELLOW N.O.
SINGLE PHASE
L OPEN 2 BLUE OPEN
POWER SUPPLY
CLOSE 3 RED GREEN
BLUE CAM
RED 4 BLUE
O C
MOTOR 5 RED
YELLOW OR RED
N 6 CAM
FOR HEATER OPTION ONLY
BLACK
7
N.C.
8 BLUE COM
N.O.
RED
OPEN 9 RED
CLOSE

CLOSE
(SEE NOTE 5)
GROUND HEATER (OPTIONAL) CLOSE
COM N.C.
RED

INTERPOSING RELAY
N.O.
CL MC
OP
Actuator shown in closed position MO
N COM N.C.
BLUE N.O.

Figure 3 - Sample field wiring diagram for Series 70 actuator with I.R.B. OPEN

OVERRIDE SW
Actuator specific wiring diagram located inside actuator cover.

Servo NXT
To control the actuator remotely from a process
controller in a modulating application, user must apply
the proper supply voltage and the configured control
signal to the Servo NXT electronics package. The control
signal may be applied locally from a hand-held signal
generator or remotely from a process controller.
For more information, please refer to the S70 Servo
NXT Manual. This manual is available on the company
website (bray.com).

Figure 4 - S70 with Servo NXT

FIELD WIRING ACTUATOR

FEEDBACK
POTENTIOMETER

INPUT+ COM WHITE

INCOMING COMMAND SIGNAL
COMMAND

FB POT

SHIELDED CABLE
(SEE NOTES 5–7)
INPUT– WIPER ORANGE

(SEE NOTES 6–8) OUTPUT+ POWER GREY

LOAD DEVICE
POSITION N.C.
FEEDBACK OUTGOING FEEDBACK SIGNAL (SHIELDED) COM
NOT TO EXCEED OUTPUT– N.O.
DEVICE COM
CTRL BOX

400 OHMS
(4–20mA CONFIGURATION)
CLOSE N.C.
COM
N.O.
POWER HEATER

N.C.
INPUT

NEUTRAL NEUTRAL OPEN COM

SINGLE PHASE LIVE
POWER SUPPLY LIVE N.O.
WHEEL

COM YELLOW
HAND

OVERRIDE SW
GROUND HEATER NEUTRAL HW YELLOW
OPEN
(OPTIONAL)
LIVE
COM1 GREEN
CAM
TORQUE SW

RED CLOSE
COM2
MOTOR

C
YELLOW NEUTRAL
OR BLACK CLOSE RED
MOTOR
O N BLUE OPEN CAM
OPEN
N.C.
COM1 BLUE COM
N.O.
LIMIT SW

COM2 RED
CLOSE
CLOSE RED

OPEN BLUE

Figure 5 - Sample field wiring diagram for Series 70 actuator with Servo NXT.
Actuator specific wiring diagram located inside actuator cover.
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 Series 70 Electric Actuator
Installation, Operation and Maintenance Manual

Storage Commissioning
Mounting the Actuator
All Bray Series 70 electric actuators are suitable for
Actuators are not weatherproof unless they are direct mounting on Bray butterfly valves. With proper
properly installed on the valve or prepared for storage. mounting hardware, the S70 actuator can be installed
Bray cannot accept responsibility for deterioration onto other quarter-turn valves or devices.
caused on-site.
• Store units on a shelf or wooden pallet in order to
NOTICE
protect against floor dampness. The standard mounting position for the actuator
orients the unit with its handwheel in a vertical plane
• Cover the units to protect against dust and dirt. and parallel to the pipeline.
• To prevent condensation from forming inside these If the actuator is mounted on a vertical pipe, it is
units, maintain a near constant external temperature recommended that the unit be positioned with
and store in a well-ventilated, clean, dry room away the conduit entries on the bottom to prevent
condensation from entering the actuator through its
from vibration.
conduits.
• For units with an internal heater, power should be In all cases, the conduit should be positioned
supplied to the heater via conduit entry with an to prevent drainage into the actuator and the
appropriate sealing gland. handwheel should not be facing down.

Follow the steps below to mount the actuator onto

the valve.
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 for both
the valve and actuator.
2. If required, place the proper adapter onto the valve
stem. It is recommended that a small amount of
‘anti-seize’ lubricant be applied to the adapter to
ease assembly.
3. Mount the actuator onto the valve stem.
4. Install the furnished mounting studs by threading
studs all the way into the actuator base. It may be
necessary to manually operate the actuator to align
the valve and actuator bolt patterns.
5. Fasten the mounting studs in place with furnished
hex nuts and lock washers

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 Series 70 Electric Actuator
Installation, Operation and Maintenance Manual

Wiring the Actuator Setting Travel Limit Switches

NOTICE
If the unit came assembled to a valve, the switches
Turn off all power and lockout/tag out service panel
have been factory-set and DO NOT need adjustment.
before installing or modifying any electrical wiring.
1. Take the actuator cover off. The cover should be Bray uses its patented cam design along with two SPDT
kept on hand for reference. mechanical switches to set the ‘Open’ and ‘Closed’
position of the valve. The green cam actuates the ‘open’
2. Wire the actuator as per the wiring diagram attached
switch when the actuator reaches the ‘open’ position.
to the inside of the actuator cover.
Similarly, the red cam actuates the ‘closed’ switch when
the actuator reaches the ‘closed’ position.
NOTICE
Standard factory setting of the travel limit switches allows
Power and control wiring should use separate conduit
90° travel between open and close positions. Cams for
entries.
each switch are adjustable for applications where less
than 90-degree travel is desired between the open and
NOTICE closed positions.
A minimum of 18 AWG wire is recommended for all
field wiring.
Terminals directly mounted on the actuator switch
plate accept wire sizes ranging from 14 to 22 AWG. Cam
Locking
Terminals of internally mounted electronics modules Screw
accept wire sizes ranging from 14 to 24 AWG.

NOTICE
The conduit connections must be properly sealed to
maintain the weatherproof integrity of the actuator
enclosure.
Figure 6. Two SPDT Travel Limit Switches

Follow the steps below to adjust the travel limit cams.

NOTE: For Actuator Size 130, 180, ignore steps 1 and 10.
1. Remove the indicator rotor by pulling away from the
indicator shaft as shown in Figure 7.

Figure 7. Indicator rotor pulled up from the indicator shaft.

2. Manually operate the actuator clockwise until the

valve reaches the desired ‘closed’ position.
3. Loosen the cam locking screw shown in Figure 6.

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 Series 70 Electric Actuator
Installation, Operation and Maintenance Manual

Setting Mechanical Travel Stops

NOTICE
Cam locking screw must be slackened before cam NOTICE
adjustments and re-tightened after cam adjustments.
If the unit came assembled to a valve, the stops have
been factory-set and DO NOT need adjustment.

Mechanical travel stops are designed to prevent over

travel while manually operating the actuator. They are
not designed to stop the electric motor.
Mechanical travel stops are located outside of the
actuator base for easy readjustment. Stainless steel lock
nuts with O-ring seals hold the travel stops securely in
place. Travel stop spacers are used to ensure that travel
stop bolts are not engaged to where they could limit 0°
to 90° electrical operation.
NOTE: Actuator Size 130, 180 does not use travel stop
Figure 8. Top view of the indicator shaft.
spacers.

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.
4. Rotate the red cam adjustment knob by hand or
with a flat head screwdriver until the red cam lobe
just activates (depresses) the ‘closed’ switch from a
clockwise direction.
NOTE: If fixed auxiliary switches are installed, the auxiliary
cam will activate prior to the main cam. Open
Travel
5. Tighten the cam locking screw. Stop Closed
Travel
6. Manually operate the actuator counterclockwise until Stop
the valve reaches the desired ‘open’ position.
Figure 9. Mechanical Travel Stops (CW Close).
7. Loosen the cam locking screw.
Follow the steps below to set the mechanical travels
8. Rotate the green cam adjustment knob until the green
stops.
cam lobe activates (depresses) the ‘open’ switch from
a counterclockwise direction. 1. Manually drive the actuator to the ‘closed’ position.
9. Tighten the cam locking screw. 2. Once the actuator is in the ‘closed’ position, rotate
10. Place the indicator rotor back on the indicator shaft. the handwheel clockwise:
• ½ turn for Actuator Size 003, 006.
• 1 turn for Actuator Size 008, 012, 020.
• ½ turn for Actuator Size 030, 050, 065.
• 2 turns for Actuator Size 130, 180.
3. Adjust the ‘closed’ travel stop bolt until the travel
stop spacer is fully engaged or the travel stop bolt
contacts the output segment gear.

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 Series 70 Electric Actuator
Installation, Operation and Maintenance Manual

4. Lock the travel stop bolt in position with the locknut.

5. Manually drive the actuator to the ‘open’ position.
6. Once the actuator is in the ‘open’ position, rotate
the handwheel counterclockwise
• ½ turn for Actuator Size 003, 006.
• 1 turn for Actuator Size 008, 012, 020.
• ½ turn for Actuator Size 030, 050, 065.
• 2 turns for Actuator Size 130, 180.
7. Adjust the ‘open’ travel stop bolt until the travel
stop spacer is fully engaged or the travel stop bolt
contacts the output segment gear.
8. Lock the travel stop bolt in position with the locknut.

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 Series 70 Electric Actuator
Installation, Operation and Maintenance Manual

Disassembly and Assembly 4. To replace the switch plate:

a. Engage handwheel.
b. Place insert into the worm segment.
c. Place and center shaft coupler onto insert.
Turn off all power and lockout/tag out service panel
before installing or modifying any electrical wiring. d. Align indicator shaft with groove in coupler
and gently place switch plate into position.
1. Disconnect external wiring from terminals.
e. Check alignment of override switch activation
2. Disconnect motor wires from the main terminal pin.
strip (motor neutral, open, and close) f. Slowly turn handwheel to ensure that the
indicator shaft is fully engaged in coupler.
NOTICE
g. Secure the switch plate with seven Phillips
Removal of switch plate with torque switches will head mounting screws in a “star” pattern.
void warranty.
h. Disengage the handwheel.
3. To remove the switch plate:
a. Follow after disconnecting external wires and 5. To remove the indicator shaft from the switch plate:
motor wires. a. Follow after removing the switch plate.
b. Unscrew the seven Phillips head mounting
b. Remove the retaining ring from the shaft,
screws.
located underneath switch plate.
c. Lift the switch plate(s) out as an assembly with
the indicator shaft attached. c. Press the shaft out, from the bottom of the
d. NOTE: Do not misplace shaft coupler, insert, switch plate.
or mounting screws.
d. NOTE: Provide support to top of switch plate
so that components on top of the switch plate
are not damaged during this procedure.
6. To remove the bearing from the switch plate:
a. Follow after the removing the indicator shaft.
b. Press the bearing from the top of the switch
plate to remove the bearing.
c. To replace, press bearing (700000-72701534)
into switch plate from the bottom of switch
plate.
7. To replace the indicator shaft in the switch plate:
a. Gently press the indicator shaft from the top of
the switch plate until the cams are flush with
the top surface of the switch plate. NOTE:
Provide support for the press fit bearing during
this step.
b. Replace retaining ring (070375-74503534) on
the shaft, located underneath switch plate.
c. Gently press the indicator shaft from the
bottom until the retaining ring is flush with
bottom of the bearing.
d. Test indicator shaft for tight fitment and ease
of rotation.
8. Other switch plate components:
a. Most components can be removed from the
switch plate without removal of the switch
Figure 10. S70, Actuator Size 003, 006 – switch plate removed. plate.
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 Series 70 Electric Actuator
Installation, Operation and Maintenance Manual

NOTE: Override switch assemblies are typically only

removable after the switch plate has been removed.
A specialty (short or 90°) screwdriver could be used
for disassembly when the switch plate is still attached
to the actuator base.

Figure 12. S70, Actuator Size 003, 006 – motor removed.

11. To remove the worm shaft spur gear:

a. Follow after removing the gear motor.
Figure 11. S70, Actuator Size 003, 006 – switch plate exploded view. b. For Actuator Size 003, 006:
9. To remove the gear motor: i. Remove spring pin using a 3/32” [2.0 mm]
a. Follow after removing the switch plate. punch.
b. Disconnect the motor leads which run to the ii. Slide the gear off the end of the worm shaft.
capacitor (120/220VAC motors). c. For Actuator Size 008, 012, 020:
c. For Actuator Size 003, 006, unscrew the i. Remove spiral retaining ring
mounting screws (two lower, one upper). ii. Remove dowel pin with 3/16” [4.5 mm]
d. For Actuator Size 008, 012, 020, unscrew punch.
the mounting screws (four lower, one upper). iii. Slide the gear off the end of the worm shaft.
e. For Actuator Sizes 030 - 180, unscrew the
d. For Actuator Sizes 030 - 180:
mounting screws (five lower, one upper).
i. Remove bowed E-clip retaining ring.
f. Remove the motor vertically out of the unit.
NOTE: Do not misplace the alignment pin(s), ii. Slide the gear off the end of the worm shaft.
mounting screws or lockwashers. iii. Remove key
10. To replace the gear motor: 12. To replace the worm shaft spur gear:
a. Replace alignment pin (070612-71904520). a. Slide the gear onto the end of the worm shaft.
b. Place motor into housing and align motor with b. For Actuator Size 003, 006:
worm shaft spur gear.
i. Slide the gear (700006-75511520) onto
c. Secure the motor with mounting screws and
the end of the worm shaft.
lockwashers in a “star” pattern.
ii. Align the mounting hole on the gear and
d. Manually operate actuator to ensure proper
the shaft.
alignment.
e. Connect motor leads to capacitor (PSC motors iii. Use a 3/32” [2.0 mm] punch to replace the
only). slot spring pin (070412-71900520).
c. Actuator Size 008, 012, 020:
i. Slide the gear (700012-75511520) onto

11
 Series 70 Electric Actuator
Installation, Operation and Maintenance Manual

the end of the worm shaft. lubricated with grease.

ii. Align the mounting hole on the gear and c. Place the worm wheel into the base, meshing
shaft. teeth with worm gear.
iii. Use a 3/16” [4.5 mm] punch to replace the d. Replace thrust washer and retaining ring.
dowel pin (070612-71804520). e. Engage handwheel and manually drive worm
iv. Replace the spiral retaining ring (070812- wheel to ensure smooth operation.
74518520). f. Reset mechanical travel stops after switch plate
d. Actuator Sizes 030 - 180: has been replaced.
i. Rotate the handwheel so that the keyway 15. To remove the handwheel:
is visible and facing upwards. a. Engage the handwheel.
ii. Replace key (700030-73100901). b. Use a punch to remove the slot spring pin.
iii. Slide the gear (700030-75503520) onto i. Actuator Size 003, 006: 3/32” [2.0 mm]
the worm shaft. punch
iv. Replace bowed E-clip retaining ring ii. Actuator Size 008 - 180: 1/8” [3 mm] punch
(070625-74511529). c. Slide the handwheel off of the override shaft.
13. To remove the output drive worm wheel:
a. Follow after removing the switch plate.
b. Back off both mechanical travel stops.
c. Remove the retaining ring and thrust washer
from the bottom of the base.
d. Lift the output drive worm wheel out of its
base.

Figure 14. S70 with handwheel removed.

16. To replace the handwheel:
a. Engage the override shaft.
b. Slide the handwheel onto the override shaft
and align mounting holes.
c. Use a punch to fit a replacement slot spring pin.
i. Actuator Size 003, 006 slot spring pin:
070316-71900529
ii. Actuator Size 008, 012, 020 slot spring
pin: 070424-71900534
iii. Actuator Size 030, 050, 065-180 slot spring
pin: 070428-71900534
d. Disengage the handwheel.
Figure 13. S70, Actuator Size 003, 006 – output drive worm wheel
and spur gear removed.
14. To replace the output drive worm wheel:
a. Ensure worm wheel contains o-ring and is in Further disassembly of the unit requires special tools
good condition. and procedures, and thus will not be covered in this
b. Ensure that o-ring and worm wheel teeth are manual.

12
 Series 70 Electric Actuator
Installation, Operation and Maintenance Manual

Field or Factory Installable Options Switch Config. for Actuator Size Actuator Size Actuator Size
On/Off Applications 003, 006 008 thru 065 130, 180
Auxiliary Switches 2 Limit Switches Standard Standard N/A
2 Limit, 2 Fixed 70A000-22901536 70A000-22901536 Standard
Auxiliary switch kits are a field or factory installable 2 Limit, 2 Fixed, 1 Mid 70A006-22902536 70A012-22902536 70B180-22902536
option for all Series 70 actuators. Switch kits are 2 Limit, 2 Fixed, 2 Mid 70A006-22903536 70A012-22903536 70B180-22903536
comprised of dry-contact (voltage free) SPDT mechanical 2 Limit, 2 Fixed, 70A006-22904536 70A012-22904536 70B180-22904536
1 Set Mid
switches which are used to indicate travel position. 2 Limit, 2 Fixed, N/A 70A012-22905536 70B180-22905536
Switches are arranged into 2 stacks. For Actuator Size 2 Set Mid

003 - 065, stack 2 activates 3° prior to switches in

stack 1. For Actuator Size 130, 180, the switch that Heater
activates 3° early depends on the direction of travel.
Bray offers an optional heater as a field or factory
installable option for the Series 70 actuator to prevent
condensation from forming inside the actuator. This
PTC (Positive Temperature Coefficient) style heater
has a unique temperature - 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.

Auxiliary
Switches
Heater

Figure 15. Fixed auxiliary switches installed in a S70 actuator.

All Series 70 actuators can be fit with one set of fixed

auxiliary switches. These are a single set of switches
which activate 3° before the travel limit switches.
Adjustable auxiliary (Mid-Travel) switches can be fit
as single independent switches or in sets. If fitted as a
set, one of the switches in the set will activate 3° before
the other. Each switch set is activated independently
from other switch sets. Figure 16. Heater installed on a S70 switch plate.
The maximum number and configuration of switches
depends on Actuator size and application of the Series NOTICE
70 actuator. Terminal block availability due to installation The heater must have a constant power supply to be
of other options may also limit the maximum number effective
of switches.
Switch Config. Actuator Size Actuator Size Actuator Size
for Modulating 003, 006 008 thru 065 130, 180
Application
2 Limit Switches Standard Standard N/A
2 Limit, 2 Fixed 70A000-22901536 70A000-22901536 Standard The heater surface can reach temperatures in excess
2 Limit, 2 Fixed, 1 Mid 70A006-22912536 70A012-22912536 70B180-22912536 of 392°F [200°C].
2 Limit, 2 Fixed, 2 Mid N/A N/A N/A
2 Limit, 2 Fixed, N/A 70A012-22914536 70B180-22914536
1 Set Mid
2 Limit, 2 Fixed, N/A N/A N/A
2 Set Mid

13
 Series 70 Electric Actuator
Installation, Operation and Maintenance Manual

Heater Kit:
• Heater with flying leads NOTICE
• Mounting Bracket
Torque switches are not field adjustable. Adjustment
• #10 Pan Head Screw, Phillips Drive
of torque switches in the field will void warranty.
Tools Required: Removal of switch plate with torque switches in the
• Screwdriver, 3/16” [5 mm] tip flat blade field will void warranty.
• Screwdriver, No.1 Phillips
Local Control Station
Installation Procedure:
The local control station is a field or factory installable
option that gives the operator the ability to locally drive
the Series 70 actuator with electrical power; overriding
the control signal from the process controller. The
Turn off all power and lockout/tag out service panel control station has a red (closed) and green (open)
before installing or modifying any electrical wiring. light to provide end-of-travel indication. It also has two
3-position switches as shown in Figure 17.
The heater is mounted through a hole provided in
the switch plate.
1. Place the heater snugly into its mounting bracket
until approx. 1/2 to 1” [13mm to 25 mm] is left
above the bracket.
2. Slip the heater into its mounting hole.
3. Align the fastening hole in the bracket with the
threaded screw hole in the plate and fasten the
heater to the switch plate.
4. Connect the heater wires to the terminal strip as
indicated on the wiring diagram.
Torque Switches
Mechanical Torque switches are a factory installed and Figure 17. S70 with Control Station.
calibrated option available for all Series 70 actuators.
Installation is simple, but due to the requirement for Switch 1 lets the operator choose between the following
special calibration equipment, it is not available for three modes of operation:
field installation. Modifying the factory torque setting 1. Local: In this mode, using switch 2 the operator
voids the actuator warranty. Removal of the switch can drive the actuator to open or close position,
plate invalidates factory calibration or stop the actuator; overriding any control signal
The worm is pinned to the worm shaft, which is held in from the process controller.
position with a stack of disc springs at both ends. The 2. Off: In this mode, the actuator can only be operated
torque transmitted through the worm to the output manually.
worm gear acts directly against the disc springs, which
3. Remote: In this mode, the actuator is controlled
compress proportionately. The worm and worm shaft
remotely from a process controller.
shift axially as a result.
A specially designed drive lever and pin is incorporated Control Station Kit
into a groove on the worm, providing the profile for the • Local Control Station Assembly
torque switching mechanism. A drive lever & pin rides • #10-24UNC x 4.5” Socket Head Cap Screws
in the worm gear torque sensor groove, and in turn (Qty:4)
drives a cam. The cam then actuates its electrical switch, • O-rings (Qty:4)
which interrupts the power to the motor winding when • Gasket
the torque exceeds the setting. The motor can still • Wiring Diagram
be powered to run in the opposite direction. When Tools Required:
powered in the opposite direction, the tripped torque • Screwdriver, 3/16”[5 mm] tip flat blade
switch will release automatically. • Screwdriver, No.1 Phillips
• Hex Key, 5/32”
14
 Series 70 Electric Actuator
Installation, Operation and Maintenance Manual

Installation Procedure: • Alternative mounting kit can be ordered in case it is

preferred to mount the control station nearby but
not on the S70 actuator.
Battery Backup Unit
Turn off all power and lockout/tag out service panel Bray offers a factory installable Battery Backup Unit
before installing or modifying any electrical wiring.
(BBU) for the 24 V Series 70 electric actuator.

The local control station is mounted to the S70 against In the event of power failure, the BBU will switch the
the conduit openings using 4 pre-drilled and tapped actuator to battery power to reach its fail position. After
mounting holes. the actuator has reached its fail position, the BBU goes
to ‘Standby Mode’ until external power is restored.
1. Remove the S70 actuator cover and set aside in a
safe location. Once external power has been restored, the actuator
returns to the position corresponding to the control
2. Remove all conduit plugs and external connections
signal present.
on the S70 that may already be in place.
3. Remove 4 short bolts and washers that were pre-
installed on the exterior of the S70 base, surrounding
the conduit entries.
4. Adhere the gasket to the control station base.
5. Slide o-rings onto the long mounting bolts until
flush with bottom of bolt head.
6. Mount the control station to the actuator using the
4 mounting bolts.
7. Wire the control station to the actuator in accordance
to the wiring diagram provided.

NOTICE
Power and control wiring should use separate conduit Figure 18. S70 with Battery Backup Unit.
entries
Battery Backup Unit is available as a factory installable
NOTES: option. For more information, please refer to the S70
24V Actuator with BBU Manual. This manual is available
• The local control station contains no terminal strips
on the company website (bray.com).
and all wiring is direct to the switches and lights via
2 x ¾” NPT or holes in bottom of housing.
• Ordering the control station with optional pin
connector receptacles will eliminate the necessity
of field wiring. Not all possible options are available
with receptacles. Consult factory.
• Control station will be completely factory wired
and tested.
• Factory will need wiring diagram drawing number
of the existing unit if it is to be retrofit with a local
control station. New wiring diagram will be provided
based upon this information.
• Local control station can be ordered with key lockable
switches.
• Local control station requires a dedicated set of
auxiliary switches. These switches are required for
turning on or off the lights on the control station
to locally indicate actuator position.
15
 Series 70 Electric Actuator
Installation, Operation and Maintenance Manual

Indication of Remote Control

NOTICE
Bray offers two field or factory installable kits to indicate
if a process controller has remote control of the Series Care should be exercised in the use of a spinner
70 actuator. Remote control of the actuator can be equipped handwheel.
interrupted if the actuator handwheel has been left Rapid operation of the handwheel to close the valve
engaged or if a local control station has been switched may cause water hammer.
out of remote mode. Rapid travel into a travel stop may cause damage.
A dry contact (voltage free) mechanical switch provides
Spinner Kit, Actuator Size 003, 006:
indication if the handwheel is engaged. Alternatively, an
additional dry contact (voltage free) mechanical switch • Spinner and Lever Assembly
can be placed in Local Control Station to provided • #10-32UNF x 3/8” Flat Head Socket Cap.
indication if the local control station is switched out Spinner Kit, Actuator Size 008 - 180:
of remote mode. Both kits can be installed and wired • Spinner Handle
in series to provide dual indication. Dual indication
• ¼”-20UNC x ¾” Socket Head Shoulder Bolt
wiring is meant to indicate that remote control has
been interrupted and does not distinguish between Tools Required:
modes of interruption. • Hex Key, 1/8” (Actuator Size 003, 006)

NOTE: • Hex Key, 3/16” (Actuator Sizes 008 - 180)

Installation Procedure:
• Factory will need wiring diagram drawing
• For Actuator Size 003, 006 – Position the lever onto
number and model of the existing unit if it is to
the back of the handwheel then screw the flat head
be retrofitted with a Remote Control Indication
cap screw in to place from behind.
kit. New wiring diagram will be provided based
upon this information. • For Actuator Size 008, 012, 020-180 – Place the
socket head shoulder bolt through the spinner
• Some configurations may limit use of remote handle and screw it firmly into the handwheel rim.
control indication kits receptacles due to number
Receptacles (Quick Connectors)
of wires entering through the conduit.
Bray offers plug-in receptacles as a field or factory
Spinner
option for quick and easy field wiring of Series 70
A spinner is field or factory installable attachment to actuators. Cord sets to fit these connectors can also
the actuator handwheel to ease and speed the manual be ordered in several lengths.
operation of the Series 70 actuator. Actuator Size 003, Unless otherwise specified, power receptacles will be
006 units mount the spinner on a lever which screws 5-pin mini style, standard duty with a black anodized
onto the back of the handwheel. Actuator Size 008 - 180 aluminum finish. They conform to ANSI B93.55M except
units mount the spinner on the rim of the handwheel. 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
Receptacle Kit:
• Receptacle(s), male pin and male thread ½” NPT
[M20], in the quantity, style, and number of pins
ordered
• Reducing bushing ¾” to ½” NPT [M25 to M20] for
installation in Actuator Sizes 008 - 180 and control
stations
• Wiring Diagram
Tools Required:
Figure 19. S70 with Handwheel Spinner Attached. • Screwdriver, 3/16” [5 mm] tip flat blade
• Wrench, 1” [25mm]

16
 Series 70 Electric Actuator
Installation, Operation and Maintenance Manual

Raised
green rib

Figure 20. S70 with 5-pin receptacle and corresponding cord set.

Installation Procedure:
1. Screw the receptacle into the actuator conduit entry Figure 21. S70 Potentiometer installation.
using Teflon tape or similar.
1. Orient the actuator in the full open (counter
2. Wire to the terminal strip according to the wiring clockwise) position.
diagram or the field wiring requirements. 2. Install the potentiometer next to the indicator
NOTES: shaft where two threaded holes are provided for
installation.
• Euro receptacles use 22 AWG wire rated at 250V,
4 Amp. Pin configuration interfaces with European 3. Align the raised green rib on pot gear with the
standards. center line of the indicator shaft.
• Mini Receptacles use 18 AWG wire rated at 300V, 9 4. Push the assembly towards the cam to mesh the
Amp. Pin configuration conforms to ANSI B93.55M. gears, then tighten the mounting screws.
• Factory will need wiring diagram drawing number
5. Rotate the actuator handwheel so that the red cam
and model of the existing unit if it is to be retrofit with
lobe is facing the body of the potentiometer. Make
receptacles. New wiring diagram will be provided
sure that the cam is not touching the potentiometer
based upon this information.
assembly. Readjust the assembly position if necessary.
• Some configurations may limit use of receptacles due
to number of wires entering through the conduit. 6. Cut the terminal marker to fit the 4-pole terminal
strip.
External Signal Feedback Potentiometer
7. Mount the 4-pole terminal strip and marker on the
Potentiometers are a field or factory installable option switch plate.
for continuous duty actuators. Actuators which are
not continuous duty do not have a pot gear fitted 8. Wire the potentiometer to the terminal strip using
on their indicator shafts and must be fitted with a the new wiring diagram.
new indicator shaft in the factory. S70 actuators fitted 9. Adhere the new wiring diagram sticker to the inside
with electronics for modulating applications already of the cover.
fit a potentiometer and cannot fit a second. In this
NOTE:
case, retransmission of position is provided through
the modulating electronics package. • Factory will need wiring diagram drawing number
and model of the existing unit if it is to be retrofit
Feedback Potentiometer Kit:
with a potentiometer. New wiring diagram will be
• Potentiometer Assembly
provided based upon this information.
• #6 Cross Drive Pan Head Screws (Qty:2)
• #6 Internal Lockwashers (Qty:2)
• 4-pole Terminal Strip
• Terminal Strip Marker
• Wiring Diagram
Tools Required:
• Screwdriver, 3/16” [5 mm] tip flat blade
• Screwdriver, No.2 Phillips

17
 Series 70 Electric Actuator
Installation, Operation and Maintenance Manual

Appendix A

Basic Tools
Common To All Units
Terminal connections, cam adjustment Screwdriver, 1⁄4" [6 mm] flat tip blade
All switches, terminal strip, torque switch plate Screwdriver, No.1 Phillips
Switch plate screws, capacitor Screwdriver, No. 2 Phillips

Actuator Size 003, 006

Mounting nuts Wrench, 1⁄2" Wrench, M8
Cover captivated capscrews Hex key, 1⁄4" Hex Key, M8
Travel stop adjusting bolts and jam nuts Wrench, 7⁄16" Wrench, M6
Motor mount socket flat head capscrew Hex key, 3⁄32"
Motor mount socket head capscrew Hex key, 9⁄64"
Conduit Entry Plug (1⁄2” NPT) Hex key, 3⁄8” Hex Key, M20

Actuator Size 008, 012, 020

Mounting nuts (small pattern) Wrench, 1⁄2” Wrench, M8
Mounting nuts (large pattern) Wrench, 3⁄4" Wrench, M12
Cover captivated capscrews Hex key, 5⁄16" Hex Key, M10
Travel stop adjusting bolts and jam nuts Wrench, 9⁄16" Wrench, M10
Motor mount socket head capscrew Hex key, 5⁄32"
Conduit Entry Plug (3⁄4” NPT) Hex key, 9⁄16” Hex Key, M25

Actuator Size 030, 050, 065

Mounting nuts (small pattern) Wrench, 3⁄4” Wrench, M12
Mounting nuts (large pattern) Wrench, 11⁄8” Wrench, M20
Cover captivated capscrews Hex key, 3⁄8" Hex Key, M20
Travel stop adjusting bolts and jam nuts Wrench, 3⁄4” Wrench, M12
Motor mount socket head shoulder bolt Hex key, 5⁄32” Hex Key, M12
Motor mount socket head capscrews Hex key, 3⁄16"
Conduit Entry Plug (3⁄4” NPT) Hex key, 9⁄16” Hex Key, M25

Actuator Size 130, 180

Mounting nuts (small pattern) Wrench, 3⁄4” Wrench, M12
Mounting nuts (large pattern) Wrench, 11⁄8” Wrench, M20
Cover captivated capscrews Hex key, 3⁄8” Hex Key, M12
Travel stop adjusting bolts Wrench, 5⁄16” Wrench, M25
Motor mount socket head shoulder bolt Hex key, 5⁄32”
Motor mount socket head capcrews Hex key, 3⁄16”
Conduit Entry Plug (3⁄4” NPT) Hex key, 9⁄16” Hex Key, M25

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 Series 70 Electric Actuator
Installation, Operation and Maintenance Manual

Appendix B

Actuator Troubleshooting Chart

Problem Possible Cause Solutions
Override is engaged Push handwheel in all the way
Wiring is incorrect Check wiring and power supply
Actuator does not operate
Actuator motor has reached its
Allow time to cool
thermal shutdown temperature
Actuator operates in
Field wiring is reversed Rewire field wiring
reverse directions
Limit switches are depressed Readjust travel limit switches
Mechanical travel stop is stopping
Adjust mechanical travel stops
actuator
Actuator does not fully Valve torque requirement is higher Manually override out of seat, try angle
close valve (or open valve) than actuator output seating or larger actuator
Optional torque switches are Valve torque exceeds actuator torque
activating rating - consult factory
Voltage power supply is low Check power source.
Engaging override Override pin is corroded or Clean and check for smooth operation of
handwheel does not shut damaged the override switch pin
off motor Override switch is damaged Replace switch
Push handwheel in as far as possible (no
Not completely disengaged
Disengaging override yellow showing)
hand-wheel does not Override pin is damaged or and
Replace override pin
restart motor does not activate switch
Incorrect wiring of override switch Check wiring
Worm gear segment is not Remove switch plate and inspect, adjust
Motor runs but worm and meshing with worm travel stops to prevent gear disengaging
gear segment do not Pin/Key on Worm/Motor drive
Replace Pin/Key on drive gear
gear sheared
Test heater wiring, should have constant
Condensation forming
power
Corrosion inside unit
Check all seals and possible water entry
Water leaking in
through conduit

19
 Series 70 Electric Actuator
Installation, Operation and Maintenance Manual

Series 70 – Size 003, 006 – Electric Actuator Exploded View

74
8
73
9

72 10

11
71
12

70 13
14
69 15

16
68
67 17
66
18
65
19
20

21
64
22
23
63 24
25 - Item 74 is optional.
62 - Items 15, 16 and 17 are optional.
26
- Item 22 is installed in units when
61 27 torque switches are not required.
28
58 59 60

57
56
34 35 36 37 38 39
29 30 31 32 33

55 40 41 42 43

54 53 45
52 51 46 47 46 48 50 49 48 46 47 46 44

20
 Series 70 Electric Actuator
Installation, Operation and Maintenance Manual

Item Item
Description Description
No. No.
1 Indicator Cover Screws 38 Manual Override Shaft Stub
2 Lockwasher 39 Manual Override Sleeve
3 Position Indicator Cover 40 O-Ring
4 O-Ring 41 O-Ring
5 Cover Fastening Screws 42 Retaining Ring
6 Cover 43 Handwheel
7 O-Ring 44 Spring Pin
8 Position Indicator 45 Manual Override Bushing
9 Cam Assembly 46 Thrust Washer
10 Limit Switch Screw 47 Thrust Roller Bearing
11 Limit Switch Bracket 48 Disc Spring
12 Main Open/Closed Limit Switches 49 Worm
13 Limit Switch Insulator 50 Spring Pin
14 Switch Plate, Fixed 51 Retaining Ring
15 Heater Bracket Screw 52 Thrust Washer
16 Heater Mounting Bracket 53 Base
17 Heater 54 Conduit Plug
18 Override Switch 55 Name Tag
19 Override Switch Insulator 56 Bushing
20 Override Switch Screw 57 Drive Gear Pin
21 Override Switch Trigger Pin 58 Drive Gear
22 Torque Switch Cover 59 Terminal Strip
23 Switch Plate Ball Bearing 60 Capacitor
24 Retaining Ring 61 Gearmotor
25 Coupler 62 Lock Washer
26 Worm Wheel 63 Motor Cap Screw
27 Spring Pin 64 Wire Entry Guard
28 O-Ring 65 Dowel Pin
29 O-Ring 66 Motor Screw
30 Nylon Flat Washer 67 Ground Terminal Washer
31 Travel Stop Nut 68 Ground Terminal Screw
32 Travel Stop Spacer 69 Switch Plate Mounting Screw
33 Travel Stop Bolt 70 Removable Switch Plate
34 Worm Shaft 71 Terminal Strip Marker
35 Override Drive Pin 72 Terminal Strip
36 Spring Plunger 73 Terminal Block Screw
37 Manual Override Shaft Hub 74 Aux Open/Closed Limit Switches

21
 Series 70 Electric Actuator
Installation, Operation and Maintenance Manual

Series 70 – Size 008, 012, 020 – Electric Actuator Exploded View

1
2
3

8
77
9
76 10

11
75
12
74
13

73 14
15
72
16

17
71
18

19
20

21
70
22
23
69
24
68 25
26
67
27 - Item 77 is optional.
66 28 - Items 16, 17 and 18 are optional.
29 - Item 76 is installed in units when
65
30
torque switches are not required.
64
63
62
61 36 37 38 39 40 41 42 43 44 45
31 32 33 34 35

60

59 58 57 56 49 50 51 52 53 55 54 53 52 51 50 49 48 47 46

22
 Series 70 Electric Actuator
Installation, Operation and Maintenance Manual

Item Item
Description Description
No. No.
1 Indicator Cover Screws 39 Manual Override Shaft Hub
2 Lockwasher 40 Spring Plunger
3 Position Indicator Cover 41 Manual Override Shaft Stub
4 O-Ring 42 Manual Override Sleeve
5 Cover Fastening Screw 43 O-Ring
6 Cover 44 O-Ring
7 O-Ring 45 Retaining Ring
8 Position Indicator 46 Handwheel
9 Cam Assembly 47 Spring Pin
10 Switch Plate Mounting Screw 48 Manual Override Bushing
11 Switch Plate 49 Thrust Washer
12 Limit Switch Screw 50 Thrust Roller Bearing
13 Limit Switch Bracket 51 Thrust Washer
14 Main Open/Closed Limit Switches 52 Disc Spring
15 Limit Switch Insulator 53 Disc Spring
16 Heater Bracket Screw 54 Worm
17 Heater Mounting Bracket 55 Spring Pin
18 Heater 56 Retaining Ring
19 Override Switch Trigger Pin 57 Thrust Washer
20 Override Switch 58 Base
21 Override Switch Insulator 59 Conduit Plug
22 Override Switch Screw 60 Name Tag
23 Switch Plate Ball Bearing 61 Bushing
24 Retaining Ring 62 Gear Spacer
25 Coupler 63 Drive Gear
26 Worm Wheel 64 Spring Pin
27 O-Ring 65 Retaining Ring
28 Terminal Strip 66 Gearmotor
29 Capacitor 67 Lock Washer
30 Spring Pin 68 Motor Cap Screw
31 O-Ring 69 Dowel Pin
32 Nylon Flat Washer 70 Wire Entry Guard
33 Travel Stop Nut 71 Terminal Strip Marker
34 Travel Stop Spacer 72 Terminal Strip
35 Travel Stop Bolt 73 Terminal Block Screw
36 Worm Shaft 74 Ground Terminal Washer
37 Override Drive Pin 75 Ground Terminal Screw
38 Spring Pin 76 Torque Switch Cover
77 Aux Open/Closed Limit Switches

23
 Series 70 Electric Actuator
Installation, Operation and Maintenance Manual

Series 70 – Size 030, 050, 065 – Electric Actuator Exploded View

1
2

77 7
8
76 9

75
10
74
73 11

72 12
13
71 14
15
16
17
18
70 19

69 20
21
22
68
23
24
67
25
66 26

65 27 - Item 77 is optional.
28 - Items 14, 15 and 16 are optional.
64 29 - Item 76 is installed in units when
30 torque switches are not required.
63

62
61
36 37 38 39 40 41 42 43 44 45 46 47
31 32 33 34 35

60

59 58 57 56 49 50 51 52 53 55 54 53 52 51 50 49 48

24
 Series 70 Electric Actuator
Installation, Operation and Maintenance Manual

Item Item
Description Description
No. No.
1 Indicator Cover Screws 39 Spring Pin
2 Lockwasher 40 Spring Plunger
3 Position Indicator Cover 41 Manual Override Shaft
4 O-Ring 42 Manual Override Sleeve
5 Cover Fastening Screw 43 O-Ring
6 Cover 44 O-Ring
7 O-Ring 45 Retaining Ring
8 Position Indicator 46 Spring Pin
9 Cam Assembly 47 Handwheel
10 Limit Switch Screw 48 Manual Override Bushing
11 Limit Switch Bracket 49 Thrust Washer
12 Main Open/Closed Limit Switches 50 Thrust Roller Bearing
13 Limit Switch Insulator 51 Thrust Washer
14 Heater Bracket Screw 52 Spherical Washer
15 Heater Mounting Bracket 53 Disc Spring
16 Heater 54 Worm
17 Override Switch Trigger Pin 55 Spring Pin
18 Override Switch 56 Retaining Ring
19 Override Switch Insulator 57 Thrust Washer
20 Override Switch Screw 58 Base
21 Ground Terminal Screw 59 Conduit Plug
22 Ground Terminal Washer 60 Name Tag
23 Switch Plate Ball Bearing 61 Bushing
24 Retaining Ring 62 Drive Gear Key
25 Coupler 63 Drive Gear
26 Worm Wheel 64 Retaining Ring
27 O-Ring 65 Gear Motor
28 Capacitor 66 Dowel Pin
29 Terminal Strip 67 Lock Washer
30 Spring Pin 68 Motor Cap Screw
31 O-Ring 69 Motor Shoulder Screw
32 Nylon Flat Washer 70 Wire Entry Guard
33 Travel Stop Nut 71 Terminal Strip Marker
34 Travel Stop Spacer 72 Terminal Strip
35 Travel Stop Bolt 73 Terminal Block Screw
36 Worm Shaft 74 Switch Plate
37 Override Drive Pin 75 Switch Plate Mounting Screw
38 Manual Override Shaft Hub 76 Torque Switch Cover
77 Aux Open/Closed Limit Switches

25
 Series 70 Electric Actuator
Installation, Operation and Maintenance Manual

Series 70 – Size 130, 180 – Electric Actuator Exploded View

2
3

5
6

70
7
69
7

68 8
9
67
66 10
65
11
64
12
63
13
62 14
15
16
61 17

60 18

59 19
20
58
21
57 - Items 12, 13 and 14 are optional.
22
56 23
55 24
25
54 26
53 27 28 29 30 31 32 33 34 35 36 37 38
52

51

50 49 48 47 40 41 42 43 44 46 45 44 43 42 41 40 39

26
 Series 70 Electric Actuator
Installation, Operation and Maintenance Manual

Item Item
Description Description
No. No.
1 Cover Fastening Screw 37 Spring Pin
2 Cover 38 Handwheel
3 O-Ring 39 Manual Override Bushing
4 Limit Switch Screw 40 Thrust Washer
5 Flat Insulation Washer 41 Thrust Roller Bearing
6 Main Open/Closed Limit Switches 42 Thrust Washer
7 Aux Open/Closed Limit Switches 43 Spherical Washer
8 Switch Spacer 44 Disc Spring
9 Limit Switch Insulator 45 Worm
10 Torque Switch Assembly 46 Spring Pin
11 Override Switch Trigger Pin 47 Retaining Ring
12 Heater Bracket Screw 48 Thrust Washer
13 Heater Mounting Bracket 49 Base
14 Heater 50 Conduit Plug
15 Override Switch 51 Name Tag
16 Override Switch Insulator 52 Bushing
17 Override Switch Screw 53 Drive Gear Key
18 Switch Plate Ball Bearing 54 Drive Gear
19 Retaining Ring 55 Retaining Ring
20 Coupler 56 Gear Motor
21 Worm Wheel 57 Lock Washer
22 O-Ring 58 Motor Cap Screw
23 Capacitor 59 Dowel Pin
24 Terminal Strip 60 Motor Shoulder Screw
25 Spring Pin 61 Wire Entry Guard
26 Set Screw 62 Ground Terminal Washer
27 Worm Shaft 63 Switch Plate Mounting Screw
28 Override Drive Pin 64 Ground Terminal Screw
29 Manual Override Shaft Hub 65 Switch Plate
30 Spring Pin 66 Terminal Strip Marker
31 Spring Plunger 67 Terminal Strip
32 Manual Override Shaft Stub 68 Terminal Block Screw
33 Manual Override Sleeve 69 Cam Assembly
34 O-Ring 70 Bushing
35 O-Ring
36 Retaining Ring

27
 Series 70 Electric Actuator
ERIES 70, SIZE -180 3: 1 GEARInstallation,
BOX EXPLODED VIEW Manual
Operation and Maintenance

Series 70 – Size 130, 180 – 3:1 Gear Box Exploded View

1
2
3
4
5

6
7
8
9

10

11

12

13

14

15 ITEM NO. DESCRIPTION

1 FASTENING SCREW
2 POSITION INDICATOR PLATE
16 3 POSITION INDICATOR GASKET
4 ACTUATOR/GEAR BOX GASKET
5 DOWEL PIN

17 6 O-RING
7 WASHER,FLAT,NYLON
8 NUT,HEX
18
9 BOLT,HEX HD
13
10 COVER
14
11 WASHER, CONICAL
19 12 ACTUATOR/GEAR BOX FASTENING
13 OUTPUT GEAR BEARING
14 IDLER/INPUT GEAR BEARING
15 COVER GASKET

20 16 INPUT GEAR
17 OUTPUT GEAR
18 IDLER GEAR

21 19 COVER
20 LOCK WASHER
21 BASE FASTENING SCREW

28
 Series 70 Electric Actuator
Installation, Operation and Maintenance Manual

Item
Description
No.
1 Fastening Screw
2 Position Indicator Plate
3 Position Indicator Gasket
4 Actuator/Gear Box Gasket
5 Dowel Pin
6 O-Ring
7 Washer,Flat,Nylon
8 Nut,Hex
9 Bolt,Hex Hd
10 Cover
11 Washer, Conical
12 Actuator/Gear Box Fastening Screw
13 Output Gear Bearing
14 Idler/Input Gear Bearing
15 Cover Gasket
16 Input Gear
17 Output Gear
18 Idler Gear
19 Cover
20 Lock Washer
21 Base Fastening Screw

29
 THE HIGH PERFORMANCE COMPANY

BRAY INTERNATIONAL
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HEADQUARTERS All statements, technical information, and recommendations in

this bulletin are for general use only. Consult Bray representatives
Bray International, Inc. or factory for the specific requirements and material selection
for your intended application. The right to change or modify
13333 Westland East Blvd. product design or product without prior notice is reserved.
Patents issued and applied for worldwide.
Houston, Texas 77041
Bray ® is a registered trademark of BRAY INTERNATIONAL, Inc.
Tel: 281.894.5454 © 2017 Bray International. All rights reserved.
bray.com IOM-70 – 01_24_2018