Samson 3776 Service manual

Translation of original instructions
EB 8368 EN
Edition August 2018
Type3776 Limit Switch

Note on these mounting and operating instructions
These mounting and operating instructions assist you in mounting and operating the device
safely. The instructions are binding for handling SAMSON devices.
ÎFor the safe and proper use of these instructions, read them carefully and keep them for
later reference.
ÎIf you have any questions about these instructions, contact SAMSON‘s After-sales Service
Department (aftersalesser[email protected]).
The mounting and operating instructions for the devices are included in
the scope of delivery. The latest documentation is available on our website
at www.samson.de > Service & Support > Downloads > Documentation.
Denition of signal words
Hazardous situations which, if not avoided,
will result in death or serious injury
Hazardous situations which, if not avoided,
could result in death or serious injury
Property damage message or malfunction
Additional information
Recommended action
DANGER
!
WARNING
!
NOTICE
!
Note
Tip
2 EB 8368 EN

Contents
EB 8368 EN 3
1 General information......................................................................................4
1.1 Model number and device index .....................................................................4
2 Installation....................................................................................................5
2.1 Mounting on SAMSON Type3278 Rotary Actuators ........................................6
2.2 Attachment to rotary actuators according to VDI/VDE3845, xing level1.........8
2.3 Attachment to rotary actuators according to VDI/VDE3845, xing level2.......10
2.4 Mounting on SAMSON Type3277 Linear Actuators.......................................12
2.5 Mounting on SAMSON Type3277-5 Linear Actuators (external signal pressure
routing).......................................................................................................15
2.6 Mounting on SAMSON Type3277-5 Linear Actuators (internal signal pressure
routing).......................................................................................................18
2.7 Mounting on SAMSON Type324X Valve with rib according to IEC60534-6-1 21
3 Pneumatic connection ..................................................................................24
3.1 Pilot supply..................................................................................................24
3.2 Filter elements for the pilot supply..................................................................25
3.3 Exhaust air lter and degree of protection......................................................26
3.4 Restrictors....................................................................................................26
4 Electrical connection ....................................................................................28
4.1 Connecting cables........................................................................................28
4.2 Equipment for use in zone2/zone22 ...........................................................29
4.3 Wiring plans ...............................................................................................29
4.4 AS-Interface module (2011 version) ..............................................................34
4.5 Pilot valve/manual override..........................................................................36
5 Limit contacts ..............................................................................................37
5.1 Switching point shift due to temperature changes............................................37
5.2 Inductive proximity switches ..........................................................................38
5.3 Inductive double proximity switch ..................................................................39
5.4 Electric microswitches...................................................................................40
6 Servicing explosion-protected devices ..........................................................42
7 Maintenance, calibration and work on equipment ........................................42
8 Certicates..................................................................................................42

4 EB 8368 EN
General information
1 General information
The device is to be mounted, started up or
operated only by trained and experienced
personnel familiar with the device. Accord-
ing to these mounting and operating instruc-
tions, trained personnel is referred to as indi-
viduals who are able to judge the work they
are assigned to and recognize possible dan-
gers due to their specialized training, their
knowledge and experience as well as their
knowledge of the applicable standards.
Explosion-protected versions of this device
must be operated only by personnel who has
undergone special training or instructions or
who is authorized to work on explosion-pro-
tected devices in hazardous areas.
Any hazards that could be caused in the
valve by the process medium, the signal
pressure or by moving parts are to be pre-
vented by taking appropriate precautions.
If inadmissible motions or forces are pro-
duced in the pneumatic actuator as a result
of the supply pressure, it must be restricted
using a suitable supply pressure reducing
station.
Proper shipping and storage are assumed.
For technical data, ordering specications,
spare parts and accessories, see Data Sheet
uT3776.
1.1 Model number and device
index
The model number and device index are
specied on the nameplate.
3776-XXXXXXXXXXXXXX
Model number
XX
Device index

EB 8368 EN 5
Installation
2 Installation
−Before installation, depressurize the rele-
vant plant section.
−Due to the high surface resistance, installa-
tion and maintenance of the equipment
within hazardous areas must be performed
in such a way as to prevent electrostatic
charging.
The degree of protection IEC60529 is only
guaranteed when the enclosure cover is
mounted, the exhaust air lters are installed
and the connections have been properly
mounted.
Devices with index 1 or lower have a black
enclosure cover with polyamide window. De-
vices with device index 2 and higher have a
transparent polycarbonate enclosure cover.
Do not loosen enameled screws in or on the
housing.
The devices are mounted onto rotary actua-
tors, linear actuators and control valves with
mounting ribs using mounting kits. Observe
the corresponding mounting instructions (see
sections2.1 to 2.7).
On mounting, make sure that at least
300mm clearance is kept above the enclo-
sure cover.
In cases where mechanical damage of the
enclosure cannot be ruled out at the site of
installation, mount additional protection to
the enclosure in order to meet the require-
ments of Clause6 of EN61241-0:2006
(Electrical Apparatus for Use in the Presence
of Combustible Dust).
Mounting position
Devices must not be mounted with the bot-
tom facing upwards onto rotary actuators or
control valves with mounting ribs in order to
prevent water from entering the enclosure.
The exhaust lter in the enclosure cover and
the cable gland must face downward or, in
cases where this is not possible, mount them
in the horizontal position.
When mounted onto SAMSON Type3277
Linear Actuators, any mounting position may
be used.
WARNING
!
NOTICE
!
Note

6 EB 8368 EN
General information
2.1 Mounting on SAMSON
Type3278 Rotary
Actuators
A mounting kit (see Fig.1) is required for
mounting on SAMSONType3278 Linear
Actuators (see Data Sheet uT8321 as well
as Mounting and Operating Instructions
uEB8321).
Please note the following instructions when
mounting the device:
−Devices with Type3776-XXXXXX10
3/2-way Booster Valve
The output port on the bottom of the
booster valve must be sealed by a
threaded pin (delivered state).
−Devices with Type3776-XXXXXX10 or
-XXXXXX12 3/2-way Booster Valve
Implement the exhaust air feedback from
the rotary actuator as follows:
ÎConnect the spring chamber of the rotary
actuator using a connection line to port 4
of the booster valve.
ÎIf no exhaust air feedback is used, seal
port 4 of the booster valve with a blank-
ing plug (12).
Mounting
1. Fasten the plate (8) to the ange of the
rotary actuator using two hexagon sock-
et screws (9).
2. Insert O-rings (4) into the grooves of the
threaded bolts of the ange plate (5).
3. Fasten the ange plate (5) to the ange
of the rotary actuator using four hexa-
gon screws (6). Make sure the four hexa-
gon screws are only tightened slightly to
allow the ange plate (5) to be aligned
when attaching the enclosure.
4. Place the follower clamp (7) through the
ange
plate (5) into the slot of the plate (8) on
the rotary actuator.
5. Unscrew enclosure cover off the device.
6. Place the enclosure on the stud bolts of
the ange plate (5). Make sure that the
shaft trunnion on the device is aligned so
that it engages in the middle of the slot in
the follower clamp (7).
7. Fasten the ange plate (5) to the ange
of the rotary actuator by tightening the
four hexagon screws (6) further.
8. Fasten the enclosure using two hexagon
socket screws (1), two spring washers (2)
and two washers (3).
9. Place the indicator cap (10) on the cam
holder and turn it until it engages.
10.Fasten the enclosure cover on the device.

EB 8368 EN 7
General information
Bottom view of the device
12
Limit switch Connection block/
booster valve
Booster valve
Type3776-XXXXXX10/-XXXXXX12
M5x9 threaded pin
ISO4029
Mounting kit for SAMSON rotary actuators
Actuator area Order no.
160cm² 1400-7216
320cm² 1400-7217
No. Quantity Description
1 2x M6x12 hexagon socket screw
ISO4762
2 2x Spring washer B6
32x Washer ISO7089, 6-6
4 2x O-ring 7.5x1.5
51x Flange plate
6 4x M5x12 hexagon screw
EN24017
71x Follower clamp
8 1x Plate
9 2x M4x10 hexagon socket screw
ISO4762
10 1x Indicator cap
11 1x Retaining ring (only with
mounting kit 1400-7217)
12 1x ¼” blanking plug
1, 2, 3
1, 2, 3
56
10
8
9
7
4
Fig.1: Mounting on SAMSON Type3278 Rotary Actuators

8 EB 8368 EN
General information
2.2 Attachment to rotary
actuators according to
VDI/VDE3845, xing
level1
A mounting kit is required for mounting onto
rotary actuators according to VDI/
VDE3845 (09-2004), xing level1 (see
Fig.2).
Please note the following instructions when
mounting the device:
−Devices with Type3776-XXXXXX10
3/2-way Booster Valve
The output port on the bottom of the
booster valve must be sealed by a
threaded pin (delivered state).
−Devices with Type3776-XXXXXX10 or
-XXXXXX12 3/2-way Booster Valve
Implement the exhaust air feedback from
the rotary actuator as follows:
ÎConnect the spring chamber of the rotary
actuator using a connection line to port 4
of the booster valve.
ÎIf no exhaust air feedback is used, seal
port 4 of the booster valve with a blank-
ing plug (8).
Installation
1. Insert O-rings (4) into the grooves of the
threaded bolts of the ange plate (5).
2. Fasten the ange plate (5) to the ange
of the rotary actuator using four hexa-
gon screws (6). Make sure the four hexa-
gon screws are only tightened slightly to
allow the ange plate (5) to be aligned
when attaching the enclosure.
3. Unscrew enclosure cover off the device.
4. Place the enclosure on the threaded bolts
of the ange plate (5). Make sure that
the shaft trunnion on the device is
aligned so that it engages in the middle
of the slot on the shaft trunnion of the ro-
tary actuator.
5. Fasten the ange plate (5) to the ange
of the rotary actuator by tightening the
four hexagon screws (6) further.
6. Fasten the enclosure using two hexagon
socket screws (1), two spring washers (2)
and two washers (3).
7. Place the indicator cap (7) on the cam
holder and turn it until it engages.
8. Fasten the enclosure cover on the device.

EB 8368 EN 9
General information
Bottom view of the device
8
Limit switch Connection block/
booster valve
Booster valve
Type3776-XXXXXX10/-XXXXXX12
M5x9 threaded pin
ISO4029
Mounting kit for rotary actuators (xing level 1) · Order number
1400-7043 1400-7186 1400-7212 1400-7210
Size 1 Size 2 Size 3 Size 4
Hole spacing A
80mm 80mm 130mm 130mm
Shaft trunnion length B
20mm 30mm 30mm 50mm
No. Quantity Description
1 2x M6x12 hexagon socket
screw ISO4762
2 2x Spring washer B6
32x Washer ISO7089, 6-6
4 2x O-ring 6x2
51x Flange plate
6 4x M5x12 hexagon screw
EN24017
71x Indicator cap
8 1x ¼” blanking plug
5
6
1, 2, 3
4
7
Fixing level 1
Fig.2: Attachment to rotary actuators according to VDI/VDE3845 (2004-09), xing level1

10 EB 8368 EN
General information
2.3 Attachment to rotary
actuators according to
VDI/VDE3845, xing
level2
A mounting kit is required for mounting onto
rotary actuators according to VDI/
VDE3845 (09-2004), xing level2 (see
Fig.3).
Please note the following instructions when
mounting the device:
−Devices with Type3776-XXXXXX10
3/2-way Booster Valve
The output port on the bottom of the
booster valve must be sealed by a
threaded pin (delivered state).
−Devices with Type3776-XXXXXX10 or
-XXXXXX12 3/2-way Booster Valve
Implement the exhaust air feedback from
the rotary actuator as follows:
ÎConnect the spring chamber of the rotary
actuator using a connection line to port 4
of the booster valve.
ÎIf no exhaust air feedback is used, seal
port 4 of the booster valve with a blank-
ing plug (10).
Installation
1. Fasten the bracket supplied by the actua-
tor manufacturer to the ange of the ro-
tary actuator using four hexagon screws.
Make sure the four hexagon screws are
only tightened slightly to allow the brack-
et to be aligned when attaching the en-
closure.
2. Insert O-rings (4) into the grooves of the
threaded bolts of the ange plate (5).
3. Fasten the ange place (5) to the bracket
using two hexagon bolts (7) and two nuts
(8).
4. Place the follower clamp (6) into the slot
of the shaft trunnion on the rotary actua-
tor.
5. Unscrew enclosure cover off the device.
6. Place the enclosure on the threaded bolts
of the ange plate (5). Make sure that
the shaft trunnion on the device is
aligned so that it engages in the middle
of the slot in the follower clamp (6).
7. Fasten the bracket to the ange of the ro-
tary actuator by tightening the four hexa-
gon screws further.
8. Fasten the enclosure using two hexagon
socket screws (1), two spring washers (2)
and two washers (3).
9. Place the indicator cap (9) on the cam
holder and turn it until it engages.
10.Fasten the enclosure cover on the device.

EB 8368 EN 11
General information
Bottom view of the device
10
Limit switch Connection block/
booster valve
Booster valve
Type3776-XXXXXX10/-XXXXXX12
M5x9 threaded pin
ISO4029
Mounting kit for rotary actuators (xing level 2) · Order no.: 1400-7041
No. Quantity Description
1 2x M6x12 hexagon socket
screw ISO4762
2 2x Spring washer B6
32x Washer ISO7089, 6-6
4 2x O-ring 7.5x1.5
51x Flange plate
6 1x Follower clamp
72x M6x12 hexagon screw
EN24017
8 2x M6 hexagon nut EN24032
9 1x Indicator cap
10 1x ¼” blanking plug
1, 2, 3
9
5
6
7, 8
4
Bracket supplied by
actuator manufacturer
Fixing level 2
Fig.3: Attachment to rotary actuators according to VDI/VDE3845 (2004-09), xing level2

12 EB 8368 EN
General information
2.4 Mounting on SAMSON
Type3277 Linear Actuators
A mounting kit (see Fig.4) is required for
mounting on SAMSON Type3277 Linear
Actuators (see Data Sheet uT8310-1 as
well as Mounting and Operating Instructions
uEB8310-6).
A SAMSON Type373X, Type3725,
Type376X or Type378X Positioner can be
mounted as well.
Please note the following instructions when
mounting the device:
−Devices with Type3776-XXXXXX10
3/2-way Booster Valve
The output port on the bottom of the
booster valve must be sealed by a
threaded pin (delivered state).
ÎInsert the O-ring (16) into the output port
on the bottom of the booster valve.
−Devices with Type3776-XXXXXX10 or
-XXXXXX12 3/2-way Booster Valve
Implement the exhaust air feedback from
the linear actuator as follows:
ÎConnect the spring chamber of the linear
actuator using a connection line to port 4
of the booster valve.
ÎIf no exhaust air feedback is used, seal
port 4 of the booster valve with a blank-
ing plug (15).
Installation
1. Use a screwdriver to turn and separate
the blanking plug from the enclosure
base.
2. Insert formed seal (1) in the groove of
the enclosure base.
3. Place the follower clamp (2) with the
spring facing outward onto the shaft
trunnion and secure it with the circlip (3).
4. Fasten the ange plate (4) with stuck-on
gasket (5) using two hex screws (6)
Mounting kit for Type3277 Linear Actuator
No. Quantity Description
1 1x Formed seal
2 1x Follower clamp
31x Circlip Ø5x0.8
4 1x Flange plate
51x Gasket
6 2x M5x12 hexagon screw EN24017
71x Washer ISO7089, 5
8 1x O-ring 5x1.2
9 1x Clamp (for mounting without
positioner/with Type376X or
Type378X Positioner)
No. Quantity Description
10 1x Fastening screw with driving pin (for
mounting with Type373X and
Type3725 Positioners)
11 2x M6x12 hexagon socket screw
ISO4762
12 2x Spring washer B6
13 2x Washer ISO7089, 6
14 1x Cover
15 2x ¼” blanking plug
16 1x O-ring 4x2

EB 8368 EN 13
General information
Bottom view of the device
16
15
12
3
Limit switch
Blanking plug
Spring
Connection block/
booster valve
Booster valve
Type3776-XXXXXX10/-XXXXXX12
M5x9 threaded pin
ISO4029
Mounting kit for Type3277 Linear Actuator
Actuator area Order no.
175, 240, 350cm² 1400-7220
355, 700, 750cm² 1400-7221
14
9
4
5
Exhaust air lter
6, 7, 8
4
6
11, 12, 13
11, 12, 13
15
9, 10
Fig.4: Mounting on SAMSON Type3277 Linear Actuators

14 EB 8368 EN
General information
aligned to the right on the actuator yoke.
Place washer (7) and O-ring (8) under
the left hex screw.
5. Mounting without positioner/mounting
with Type376X or Type378X Position-
er: fasten clamp (9) on the actuator stem.
Mounting with Type373X and
Type3725 Positioners: fasten the clamp
out of the positioner mounting kit onto
the actuator stem using the fastening
screw with driving pin (10).
6. Unscrew enclosure cover off the device.
7. Place the enclosure on the stud bolts of
the ange plate (4). Make sure that the
shaft trunnion is aligned so that the driv-
ing pin on the clamp (9) or the fastening
screw (10) engages exactly in the slot in
the follower clamp (2).
8. Fasten the enclosure using two hexagon
socket screws (11), two spring washers
(12) and two washers (13).
9. Fasten the enclosure cover on the device.
10.Mounting without positioner: remove the
exhaust air lter in the enclosure cover
and replace it with the blanking plug
(15) since the air is exchanged through
the cover (14) on the linear actuator.
Fasten the cover (14) on the other side of
the actuator yoke and screw in the ex-
haust air lter.
Mounting with Type373X, Type3725,
Type376X or Type378X Positioner:
mount the positioner on the other side of
the actuator yoke as described in the
mounting and operating instructions.
The cover (14) is not required in this
case.

EB 8368 EN 15
General information
2.5 Mounting on SAMSON
Type3277-5 Linear
Actuators (external signal
pressure routing)
A mounting kit (see Fig.5) is required for
mounting on SAMSON Type3277-5 Linear
Actuators with external signal pressure rout-
ing (see Data Sheet uT8310-1 as well as
Mounting and Operating Instructions
uEB8310-1).
A SAMSON Type373X, Type3725,
Type376X or Type378X Positioner can be
mounted as well.
Please note the following instructions when
mounting the device:
−Devices with Type3776-XXXXXX10
3/2-way Booster Valve
The output port on the bottom of the
booster valve must be sealed by a
threaded pin (delivered state).
ÎInsert the O-ring (16) into the output port
on the bottom of the booster valve.
−Devices with Type3776-XXXXXX10 or
-XXXXXX12 3/2-way Booster Valve
ÎSeal port 4 of the booster valve with a
blanking plug (15).
Installation
1. Use a screwdriver to turn and separate
the blanking plug from the enclosure
base.
2. Insert formed seal (1) in the groove of
the enclosure base.
3. Place the follower clamp (1) with the
spring facing outward onto the shaft
trunnion and secure it with the circlip (3).
4. Fasten the ange plate (4) with stuck-on
gasket (5) using two hex screws (6)
aligned to the right on the actuator yoke.
Place washer (7) and O-ring (8) under
the left hex screw.
5. Mounting without positioner/mounting
with Type376X or Type378X Position-
er: fasten clamp (9) on the actuator stem.
Mounting with Type373X and
Type3725 Positioners: fasten the clamp
out of the positioner mounting kit onto
the actuator stem using the fastening
screw with driving pin (10).
6. Unscrew enclosure cover off the device.
7. Place the enclosure on the stud bolts of
the ange plate (4). Make sure that the
shaft trunnion is aligned so that the driv-
ing pin on the clamp (9) or the fastening
screw (10) engages exactly in the slot in
the follower clamp (2).
8. Fasten the enclosure using two hexagon
socket screws (11), two spring washers
(12) and two washers (13).
9. Fasten the enclosure cover on the device.
10.Mounting without positioner: remove the
exhaust air lter in the enclosure cover
and replace it with the blanking plug
(15) since the air is exchanged through
the cover (14) on the linear actuator.
Fasten the cover (14) on the other side of
the actuator yoke and screw in the ex-
haust air lter.

16 EB 8368 EN
General information
Bottom view of the device
16
15
12
3
Limit switch
Blanking plug
Spring
Connection block/
booster valve
Booster valve
Type3776-XXXXXX10/-XXXXXX12
M5x9 threaded pin
ISO4029
Mounting kit for Type3277-5, 120cm² diaphragm area (external signal pressure routing)
Order no.: 1400-7219
14 9
4
5
Exhaust air lter
6, 7, 8
4
6
11, 12, 13
11, 12, 13 15
9, 10
Fig.5: Mounting on SAMSON Type3277-5 Linear Actuators · External signal pressure routing

EB 8368 EN 17
General information
Mounting kit for Type3277-5, 120cm² diaphragm area (external signal pressure routing)
No. Quantity Description
1 1x Formed seal
2 1x Follower clamp
31x Circlip Ø5x0.8
4 1x Flange plate
51x Gasket
6 2x M5x12 hexagon screw EN24017
71x Washer ISO7089, 5
8 1x O-ring 5x1.2
9 1x Clamp (for mounting without
positioner/with Type376X or
Type378X Positioner)
No. Quantity Description
10 1x Fastening screw with driving pin (for
mounting with Type373X and
Type3725 Positioners)
11 2x M6x12 hexagon socket screw
ISO4762
12 2x Spring washer B6
13 2x Washer ISO7089, 6
14 1x Cover
15 2x ¼” blanking plug
16 1x O-ring 4x2
Mounting with Type373X, Type3725,
Type376X or Type378X Positioner:
mount the positioner on the other side of
the actuator yoke as described in the
mounting and operating instructions.
The cover (14) is not required in this
case.

18 EB 8368 EN
General information
2.6 Mounting on SAMSON
Type3277-5 Linear Actua-
tors (internal signal pres-
sure routing)
A mounting kit (see Fig.6) is required for
mounting on SAMSON Type3277-5 Linear
Actuators with internal signal pressure rout-
ing (see Data Sheet uT8310-1 as well as
Mounting and Operating Instructions
uEB8310-1).
A SAMSON Type373X, Type3725,
Type376X or Type378X Positioner can be
mounted as well.
Please note the following instructions when
mounting the device:
Devices with Type3776-XXXXXX10 3/2-
way Booster Valve
Only these devices can be mounted on
SAMSON Type3277-5 Linear Actuators
with internal signal pressure routing. The
signal pressure is routed through holes in the
yoke and over a switchover plate either to
the top or bottom diaphragm chamber.
ÎUnscrew the threaded pin out of the out-
put port on the bottom of the booster
valve.
ÎSeal port 2 of the booster valve with the
screw plug (17) and O-ring (18).
ÎSeal port 4 of the booster valve with a
blanking plug (15).
Installation
1. Use a screwdriver to turn and separate
the blanking plug from the enclosure
base.
2. Insert formed seal (1) in the groove of
the enclosure base.
3. Place the follower clamp (2) with the
spring facing outward onto the shaft
trunnion and secure it with the circlip (3).
Mounting kit for Type3277-5, 120cm² diaphragm area (internal signal pressure routing)
No. Quantity Description
1 1x Formed seal
2 1x Follower clamp
31x Circlip Ø5x0.8
4 1x Flange plate
51x Gasket
6 2x M5x12 hexagon screw EN24017
71x Washer ISO7089, 5
8 1x O-ring 5x1.2
9 1x Clamp (for mounting without
positioner/with Type376X or
Type378X Positioner)
No. Quantity Description
10 1x Fastening screw with driving pin (for
mounting with Type373X and
Type3725 Positioners)
11 2x M6x12 hexagon socket screw
ISO4762
12 2x Spring washer B6
13 2x Washer ISO7089, 6
14 1x Cover
15 2x ¼” blanking plug
16 1x 13mm seal
17 1x Screw plug DIN908, ¼“
18 1x O-ring 14x1 (for G¼ only)

EB 8368 EN 19
General information
Bottom view of the device
17, 18
3
2
1
15
Limit switch
Blanking plug
Spring
Booster valve
Type3776-XXXXXX10/-XXXXXX12
M5x9 threaded pin
ISO4029
Mounting kit for Type3277-5, 120cm² diaphragm
area (internal signal pressure routing)
Connection Order no.
G¼ 1400-7222
¼NPT 1400-7223
14 9
4
5
Exhaust air lter
6, 7, 8
4
9, 10 6
11, 12, 13
11, 12, 13
15
16
Fig.6: Mounting on SAMSON Type3277-5 Linear Actuators · Internal signal pressure routing

20 EB 8368 EN
General information
4. Fasten the ange plate (4) with stuck-on
gasket (5) using two hex screws (6)
aligned to the right on the actuator yoke.
Place washer (7) and O-ring (8) under
the left hex screw.
5. Insert seal (16) through the hole on the
ange plate (4) into the signal pressure
connection.
6. Mounting without positioner/mounting
with Type376X or Type378X Position-
er: fasten clamp (9) on the actuator stem.
7. Mounting with Type373X and
Type3725 Positioners: fasten the clamp
out of the positioner mounting kit onto
the actuator stem using the fastening
screw with driving pin (10).
8. Unscrew enclosure cover off the device.
9. Place the enclosure on the stud bolts of
the ange plate (4). Make sure that the
shaft trunnion is aligned so that the driv-
ing pin on the clamp (9) or the fastening
screw (10) engages exactly in the slot in
the follower clamp (2).
10.Fasten the enclosure using two hexagon
socket screws (11), two spring washers
(12) and two washers (13).
11.Fasten the enclosure cover on the device.
12.Mounting without positioner: remove the
exhaust air lter in the enclosure cover
and replace it with the blanking plug
(15) since the air is exchanged through
the cover (14) on the linear actuator.
Fasten the cover (14) on the other side of
the actuator yoke and screw in the ex-
haust air lter.
Mounting with Type373X, Type3725,
Type376X or Type378X Positioner:
mount the positioner on the other side of
the actuator yoke as described in the
mounting and operating instructions.
The cover (14) is not required in this
case.