Metso neles EJ Series Operating and maintenance manual

PNEUMATIC
DOUBLE DIAPHRAGM ACTUATOR
SERIES EJ
Installation, Maintenance
and Operating Instructions
6 EJ 70 en
Issue 9/01

Table of Contents
1 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1 Issues covered by the instructions. . . . 3
1.2 Actuator design and function . . . . . . . . 3
1.3 Actuator labeling. . . . . . . . . . . . . . . . . . 3
1.4 Technical data.. . . . . . . . . . . . . . . . . . . 3
1.5 Safety measures. . . . . . . . . . . . . . . . . . 4
2 TRANSPORTING, RECEIVING AND STORING 5
3 INSTALLATION AND DISMANTLING . . . . . 5
3.1 Operating gas. . . . . . . . . . . . . . . . . . . . 5
3.2 Attaching the actuator to a valve . . . . . 5
3.3 Attaching the ND800 valve controller to
the actuator. . . . . . . . . . . . . . . . . . . . . . 6
3.3.1 Attaching other accessories to the
actuator (actuator model EJ_U) . 7
3.4 Detaching the actuator from the valve . 7
4 MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . 8
4.1 General. . . . . . . . . . . . . . . . . . . . . . . . . 8
4.1.1 Exchanging diaphragm at the
springless end . . . . . . . . . . 8
4.1.2 Exchanging diaphragm at the
spring end . . . . . . . . . . . . 9
4.2 Detaching and attaching the drive shaft 10
5 OPERATION FAILURES . . . . . . . . . . . . . . 11
6 REQUIRED TOOLS . . . . . . . . . . . . . . . . . . 11
7 ORDERING SPARE PARTS. . . . . . . . . . . . 11
8 EXPLODED VIEWS AND PARTS LIST . . . 12
8.1 Actuator EJ05 . . . . . . . . . . . . . . . . . . . 12
8.2 Actuators EJ07-14 . . . . . . . . . . . . . . . 13
9 DIMENSIONS AND WEIGHTS . . . . . . . . . . 14
9.1 Actuator EJ . . . . . . . . . . . . . . . . . . . . . 14
9.2 Connection dimensions . . . . . . . . . . . 15
10 TYPE CODE . . . . . . . . . . . . . . . . . . . . . . . . 16
READ THESE INSTRUCTIONS FIRST!
The instructions provide the necessary information to ensure safe handling and use of the actuator.
For further information, contact the manufacturer or his representative.
Contact information is shown on the back page.
SAVE THESE INSTRUCTIONS!
Subject to change without notice.
2

1 GENERAL
1.1 Issues covered by the instructions
These instructions contain the most important user informa-
tion related to the actuators in the Metso Automation EJ
series. Further information on valves, positioners and other
accessories from the installation, as well as user and main-
tenance instructions for each specific model, can be ob-
tained.
1.2 Actuator design and function
EJ series actuators are double diaphragm actuators for
control and closure. The actuator is pneumatic and singular
function (model EJ). The basic principle of the actuator
relies on a floating central diaphragm cylinder design,
where a rolling diaphragm turns the valve stem via a
backlash-free gear transmission. No cylinder O-rings exist.
Because of the central floating diaphragm cylinder design,
the transverse internal forces, which affect and impose
friction on the actuator, have been eliminated. In addition,
the structure guarantees tolerance-free action as well as
exceptionally low internal friction. The mounting interface of
the EJ actuator conforms to ISO standard. The mounting
interface of the Metso Automation B1J cylinder actuator
conforms to the same standard, which makes the EJ actua-
tor and the B1J cylinder actuator interchangeable. A posi-
tioner (ND800) is attached directly onto the actuator, which
makes external tubing unnecessary. The actuator also has
a mounting interface which conforms to the VDI/VDE 3845
standard, and which allows connection of other accesso-
ries, such as positioners and limit switches, to the actuator.
This requires the use of external compressed air tubing. If
the actuator is used without a positioner, an additional
mounting interface for a solenoid valve is required on the
side of the actuator, according to the VDI/VDE 3845 stand-
ard. In such cases no external tubing is required. The
rotation of the drive shaft can be adjusted with stroke
adjustment screws which are located at each end of the
actuator.
1.3 Actuator labeling.
Attached to the actuator is a label (Figure 2) with the
following information:
1 Type code
2 Place and time of manufacturing and serial number
(yyyy ww nr)
3 Inspected by
4 Maximum supply pressure
5 Bar codes for items 1 and 2
1.4 Technical data.
Operating temperature:
standard design -20 °C to +70 °C
low temperature design -40 °C to +70 °C
high temperature design -20 °C to +120 °C
Maximum supply pressure: 8 bar / 116 psi
Cylinder volume, dm3/ in3:
EJ 05 0.17 / 10.5
EJ 07 0.4 / 24.5
EJ 10 1.0 / 61.0
EJ 12 2.5 / 152.5
EJ 14 6.0 / 366.0
Nominal torque with standard spring, Nm / lbf ft:
EJ 05 19 / 14
EJ 07 47 / 34.5
EJ 10 117 / 86.5
EJ 12 280 / 206.5
EJ 14 690 / 509
The output torque of the actuator depends directly on the
supply pressure.
The operational direction or turning angle of the actuator
affects the output torque, Figure 3.
Fig. 1. Actuator design
14
3
2
5
Fig. 2. ID label markings
1.8
1.6
1.4
1.2
1
Mn
M / Mn
0102030405060708090
angle /
EJ_A
1.8
1.6
1.4
1.2
1
Mn
M / Mn
0102030405060708090
angle /
EJ
M
5 bar
M
4 bar
M
spring
M5 bar
M
4 bar
M
spring
Fig. 3. The influence of the turning angle on the
torque
3

1.5 Safety measures
WARNING:
Do not exceed specifications!
Exceeding specifications which are marked on the
actuator label may cause damage to the device and,
in extreme cases, lead to uncontrolled depressuriza-
tion. The consequences are damage to the equipment
and possible injuries to people.
WARNING:
Do not dismantle a pressurized actuator!
Dismantling of a pressurized actuator results in uncon-
trolled depressurization. Do not remove the adjustment
screws at the ends of the actuator while the cylinders
are pressurized. Always close the supply pressure and
depressurize the cylinders before dismantling the ac-
tuator. Failure to conform may lead to injuries and
damage to the device.
WARNING:
Be aware of the cutting action of the valve!
No hands, other body parts, tools or other objects must
be placed in the flow bore of the valve while it is open.
Foreign objects must be prevented from entering the
pipe system. During operation the valve has a cutting
action. Close and detach the air supply to the actuator
during maintenance. Failing to conform may lead to
injuries and damage to the device.
WARNING:
Consider the weights of the actuator and the valve
combination during handling!
The valve combination must not be lifted by the actua-
tor alone, the positioner, the limit switch or the associ-
ated tubing. Attach the lifting belts according to Section
2 when lifting the valve combination. The weights of
the actuators are listed in the tables in Section 9.1. A
drop may result in injuries and equipment damage.
WARNING:
Please observe the instructions given on the warn-
ing labels that are attached to the actuator!
WARNING:
Remove the limit-adjustment screws from the ends
of the spring housing prior to opening the attach-
ment screws!
WARNING:
The actuator must not be operated by cycling the
drive shaft manually!
WARNING:
Do not dismantle a spring package!
The spring package inside a spring housing has been
pre-compressed. The permanently fixed nut of the
spring package must never be opened, nor must the
spring package be dismantled. For EJ actuators the
compression spring, spring retainer, spring plate, dia-
phragm rod, pressure bearing, hexagon nut, base plate
and retainer ring are only supplied as an assembled
package.
Actuator Mn
(Nm / lbf ft)
Spring torque
M spring (Nm / lbf ft)
Torque generated by the supply pressure (Nm / lbf ft)
4 bar / 58 psi 5 bar / 72.5 psi 6 bar / 87 psi
0° 90° 0° 90° 0° 90° 0° 90°
EJ 05
EJ 07
EJ 10
EJ 12
EJ 14
EJ 05A
EJ 07A
EJ 10A
EJ 12A
EJ 14A
19 / 14
47 / 34.5
117 / 86.5
280 / 206.5
690 / 509
19 / 14
47 / 34.5
117 / 86.5
280 / 206.5
690 / 509
19 / 14
47 / 34.5
117 / 86.5
280 / 206.5
690 / 509
28 / 20.5
68 / 50
167 / 123
407 / 300
940 / 694
28 / 20.5
68 / 50
167 / 123
407 / 300
940 / 694
19 / 14
47 / 34.5
117 / 86.5
280 / 206.5
690 / 509
23 / 17
58 / 43
143 / 105.5
344 / 254
845 / 623
14 / 10.5
38 / 28
93 / 68.5
220 / 162
600 / 443
14 / 10.5
38 / 28
93 / 68.5
220 / 162
600 / 443
23 / 17
58 / 43
143 / 105.5
344 / 254
845 / 623
34 / 25
85 / 62.5
210 / 155
500 / 369
1230 / 908
25 / 18.5
64 / 47
160 / 118
375 / 277
985 / 727
25 / 18.5
64 / 47
160 / 118
375 / 277
985 / 727
34 / 25
85 / 62.5
210 / 155
500 / 369
1230 / 908
45 / 33
110 / 81
275 / 203
655 / 483.5
1610 / 1190
36 / 26.5
91 / 67
225 / 166
530 / 391
1360 / 1000
36 / 26.5
91 / 67
225 / 166
530 / 391
1360 / 1000
45 / 33
110 / 81
275 / 203
655 / 483.5
1610 / 1190
Table 1. The influence of the turning angle on the torque
4

2 TRANSPORTING, RECEIVING AND
STORING
Check that neither the actuator nor its accessories have been
damaged during transportation. Store the actuator carefully
prior to installation, preferably indoors in a dry place. Do not
transfer it to the installation point or remove the end caps until
immediately prior to the installation. If the actuator diaphragms
are separately stored, storage should be carried out accord-
ing to general rules covering the storage of rubber products.
The equipment should be stored in a dry place at room
temperature, protected from UV radiation. The diaphragms
are packed in a non-transparent plastic bag that should not
be opened unnecessarily.
Lift the actuator as shown in Figure 4: In the horizontal
position by sufficiently long hexagon screws which replace
the adjustment screws, in the vertical position by an eyebolt
which replaces the adjustment screw. Check the weights
from the table in Section 9.1.
3 INSTALLATION AND DISMANTLING
3.1 Operating fluid
Double diaphragm actuators use dry compressed air or
natural gas. Oil spray is not required. Actuators equipped
with positioners use clean, dry and oil-free compressed air.
The air connections are shown in the dimensional drawing
9.2. (Dimensions). The maximum supply pressure for the
actuator is specified on the label (Figure 2). See also
Section 1.4 "Technical data".
3.2 Attaching the actuator to a valve
The actuator is attached to a valve via an ISO 5211 standard
mounting interface. The actuator bore is adapted to the
valve stem with a separate coupling. The coupling (II+II) is
a two-piece, cone-shaped bushing, which is tightened
firmly with a tightening screw (I) around the valve stem.The
coupling and the tightening screw are mounted from the
mounting interface side of the actuator, according to Fig-
ure 6. Cylindrical pins (III) are inserted in the bushing slots,
and these must be directed into the corresponding slots in
the actuator during tightening. The threads of the tightening
screw must be carefully cleaned of old threadlock before
the coupling and the tightening screw are installed, and
Loctite 243 or similar threadlock must be carefully applied to the
threads, as shown in Figure 6. The tightening screw can be turned
from inside the actuator shaft using a suitable hex key, see Figure 8.
Prior to installation, the correct keyway position of the valve
must be checked. The coupling has four keyways, two of
which are intended for valves with DIN key (for example RA
or RB segment valves) and two for valve shafts with ANSI
keys (for example all old type Neles valves). The DIN
keyway is located in the middle of the half bushing, and the
ANSI keyway is located in the split between the bushing
halves. Figure 7 shows the keyway position when the
actuator is in a closed position.
The Open or Closed positions of the actuator can be identified
either by using compressed air, see Figure 5, or by checking
the position of the pointer at the end of the drive shaft. The
actuator is closed if the pointer on the coupling plate is
transverse to the direction of the actuator’s main shaft.
The actuator is either mounted directly on the valve, or is
attached to the valve bracket with four screws. The tighten-
ing screw of the coupling should be loosened before
mounting, to allow the shaft to fit easily into the actuator.
Fig. 4. Lifting the actuator
Closing pressure
Adjustment screw
for closed position
Adjustment screw
for open position
Opening
pressure
Fig. 5. Actuator connections
Loctite 243
or similar
Hex. key
Fig. 6. Cone bushing installation
5

The actuator design allows axial movement of the drive
shaft. Check, before the screw is tightened, that the drive
shaft is in the upper position of its axial movement, which
is its normal position (the mounting position shown in Figure
8). Checking is important, as the actuator shaft drops down
slightly when the screw is tightened. The axial movement
of the drive shaft can be observed and measured before
attachment to a valve. The actuator drive shaft is in the
upper position when its upper surface conforms to Table 2
(see Figure 8).
The drive shaft will automatically find its correct position
when the tightening screw is tightened, if the installation tool
is used (See Figure 8). The installation tool is attached
instead of the coupling plate using M4 screws with the drive
shaft in upper position (before the valve is installed). Tighten
the screws in such a way that the tool is tightened against
the upper surface of the housing.
Install the actuator on the valve and attach the attachment
screws normally. Finally, tighten the tightening screw ac-
cording to Table 2. The required torque is also marked on
a plate close to the drive shaft on the actuator housing. The
installation tool is removed, and the coupling plate is reat-
tached.
The valve may malfunction if the tightening of the connec-
tion has been carried out improperly.
Finally, the extreme positions of the valve are adjusted with
the stop screws at the ends of the actuator. The location of
the screws for adjusting the Close and Open positions of
the valve are marked with letters on the ends of the actuator
housing (see Figure 5).
3.3 Attaching the ND800 valve controller
to the actuator
The ND800 valve controller is attached directly to the
actuator with four attachment screws. No tubing is required
between the devices. Two of the attachment screws are
located at the front of the actuator and two below the cover.
O-rings are placed in the air connections of the positioner.
The valve controller shaft is correctly positioned when the
painted position marks are aligned (see Figure 9).
External tubing is necessary if a reverse signal function is
required. See the ND800 installation, user and mainte-
nance instructions 7 ND 70 for further information.
Attachment of the ND800 valve controller to the EJ05
actuator is done using a connection plate (see Figure 10).
Make sure that the pegs of the connection plate are pointing
away from the actuator. The plate is attached to the actuator
with four attachment screws. In addition, O-rings are placed
in the grooves below the plate. The ND800 valve controller
is attached next, as described previously.
Size Mount. Thr. Hex.
size
Nm ~X
upp. pos.
(mm)
~X
lower pos.
(mm)
EJ05
EJ07
EJ10
EJ12
EJ14
F05
F07
F10
F12
F14
M12
M16
M20
M24
M36
6
8
10
14
19
25
50
100
200
700
4,0
1.5
2.5
3.5
4.5
1
-2
-2
-2
-2
Table 2. Mounting interfaces, tightening screws, tight-
ening torques and drive shaft movement
DIN keyways in the
middle of bushings
ANSI keyways at the
bushing split
THE ACTUATOR IN CLOSED POSITION
Fig. 7 Keyway positions on the actuator
X
Installation
tool
Fig. 8. Tightening of the cone bushing
O-rings
Painted
alignment
marks
Fig. 9. Attaching the ND800 valve controller to
the EJ actuator
6

Reversed signal control with EJ05 is achieved using a
different plate with crossed channels. No external tubing is
required in this case.
3.3.1 Attaching other accessories to the
actuator (actuator model EJ_U)
Any positioner, limit switch or other accessory which supports
the VDI/VDE 3845 connection standard can be attached to
theactuator. In suchcases thecorrespondingbracket is used,
as well as compressed air tubing, if necessary. The actuator
also has a VDI/VDE 3845 standard mounting interface for
solenoid valves. No tubing is required between the valve and
the actuator if a compatible solenoid valve is used. A separate
adapter is used to implement the mounting interface for the
EJ05 actuator (see Figure 12).
3.4 Detaching the actuator from the valve
The actuator is detached in the same way that it is attached,
but the order is reversed. First, the positioner, or any other
accessory, is detached from the actuator, and the coupling
plate is detached from the drive shaft. Next, the bushing is
loosened by turning the tightening screw counter-clock-
wise. The tightening screw also acts as an ejector. The
actuator can finally be detached from the valve after the
screws that attach the actuator to it have been removed.
The actuator must always be depressurized, and the air
supply tubing detached, before the actuator is removed.
The respective positions of the actuator and the valve, and
the valve stem key and the corresponding keyway must be
considered before they are detached. This makes reinstal-
lation easier.
Coupling plate
Fig. 10. Attaching a connection plate to the EJ05
actuator
Mounting interface
according to the
VDI/VDE 3845
standard
Fig. 11. Limit switch attached to actuator, model EJ_U
EJ05
VDI/VDE 3845
standard interface on
separate adapter
Fig. 12. Adapter
Fig. 13. The actuator is detached by loosening the
tightening screw
7

4 MAINTENANCE
4.1 General
Actuators do not require regular maintenance under normal
conditions. Here are some maintenance measures that the
end user can carry out, if necessary. The item numbers in
the text refer to the exploded view and the part list in Section
8, unless stated otherwise.
4.1.1 Exchanging diaphragm at the
springless end
Exchange of rolling diaphragms does not require the ac-
tuator to be removed from the valve. Also, the positioner
can remain attached during the exchange.
WARNING:
Do not dismantle a pressurized actuator!
A diaphragm is exchanged in the following way:
Make sure that the actuator is depressurized.
Remove the stop screw (23) and the locking nut (24).
Remove the end screws (22) by gradually opening
each screw, the cylinder end (2) and the O-ring (20).
Remove the end screw (25) of the gear rod (4). This
releases the following parts: the seal ring (26), the
diaphragm support plate (6), the rolling dia-
phragm (7), and the diaphragm retainer (5).
The diaphragms are supplied as produced (see Figure 15,
Stage 1). The fabric support is situated on the outside of the
diaphragm cup. The rougher fabric side is placed against
the diaphragm retainer, which makes the following pre-
treatment of the diaphragm necessary:
Initially, turn the diaphragm (7) inside out (the fabric side
will now rest against the diaphragm retainer), then turn
the diaphragm edge once more (see Figure 15).
Check and clean the diaphragm retainer (5) and the
diaphragm support plate (6) to remove particles
before the diaphragm is installed.
Place the prepared diaphragm on the diaphragm
retainer (5) as shown in Figure 15, and place the
support plate (6) on the diaphragm.
Place the diaphragm retainer-rolling diaphragm-dia-
phragm support plate-combination on the end of the
gear rod (4), and fix the items with the screw (25) and
thesealring(26).Thescrew(25)istightenedaccording
to the torque data given in Table 3.
Secure the screw using, for example, Loctite 243
screw lock or similar.
Next, the cylinder end cap (2) is attached. Prior to
installation, check the diaphragm seal groove in the
cylinder end, and remove loose particles. Lubricate
the groove with Unisilikon GLK112 or Molykote III
lubricant or similar.
The cylinder end has two air connections, one of
which has been blocked.
Place the O-ring (20) in the air connection groove on
the actuator housing, and place the cylinder end
carefully against the actuator housing.
The seal ring on the edge of the rolling diaphragm (7) must
fit properly into the groove in the cylinder end, Figure 16.
The easiest way to attach the end cap is to initially
place the rolling diaphragm seal ring half-way into
the groove in the end cap, and to slidethe cap slightly
sideways. The seal ring will then stretch slightly and
slide easily into the groove, as the end is simultane-
ously pressed against the housing (1).
Initially, place the end cap in the right position, and
avoidturning it once the seal on therollingdiaphragm
is in the groove.
NOTE:
It is crucial for the function of the rolling diaphragm that
no twist tension remains in the diaphragm.
2
6754
1
20
2526
22 23, 24
Fig. 14. Exchange of membrane
Rubber side
"TOP SIDE"
Rubber side
"TOP SIDE" Rubber side
"TOP SIDE"
Fabric
side
Fabric
side Fabric
side
Fig. 15. Preparation of rolling diaphragm
2.
1.
Fig. 16 Attaching the cylinder end cap
8

Fix the cylinder end with the socket head screws (22),
once it is in the right position. Tighten the screws
according to the torque values given in Table 3.
4.1.2 Exchangingdiaphragmatthespringend
WARNING:
Do not dismantle a pressurized actuator!
The seal ring (50) should be exchanged together with the
membrane. Bearings (47, 49), O-rings (20, 59, 52) and seal
ring (51) are exchanged when required.
The diaphragm in the spring-less end is exchanged in the
following way:
Make sure that the actuator is depressurized.
Remove the nut (24) and the stop screw (23) from the
end of the spring housing (42). Remove the nut (24)
and the stop screw (23) from the cylinder end (2) also.
Remove the socket head screws (53) of the spring
housing (42) by gradually and sequentially turning
each one. The spring housing will maintain the com-
pression of the spring package.
Turn the screws evenly (ca. 5 mm or 3 full turns) until the
spring housing (42) has released the spring package
compression. Then remove the socket head screws (53)
completely from the housing (1).
Remove spring housing (42), spacer plate (45), O-
ring (52) and O-ring (20) from the housing (1).
Remove the bearing (49) from the spring package and
remove the package from the gear rod (4) by turning it
open. The spring package can also be turned by the
nut (54) at the end of the package. The nut has been
permanently fixed and must not be detached from
the spring package.
WARNING:
The spring package must not be dismantled, as the
spring will still be compressed after the package has
been detached.
Following the detachment of the spring package, the
following parts can be removed from the gear rod
(4): rolling diaphragm (7), diaphragm support plate
(6) and seal ring (51).
Remove the lead-through plate (46) from the gear
rod (4) by pulling it away from the housing (1).
Remove the lead-through bearing (47) from the lead-
through plate (46) and the seal ring (50) from the
lead-through bearing.
Check the lead-through bearing and replace it if it is worn.
Lubricate the new seal ring (50) with Unisilikon
GLK122 or Molykote III lubricant or similar, and install
it in the lead-through bearing (47).
Install the O-ring (59) in the groove on the outer
surface of the lead-through bearing (47). Then attach
the lead-through bearing (47) to the lead-through
plate (46) using a suitable pressing tool.
Press the lead-through plate (46), the lead-through bear-
ing (47) and the seal ring (50) onto the gear rod until the
lead-through plate (46) touches the housing (1).
Install the O-ring (20) in the groove at the end of the
housing (1).
Check and remove loose particles from the spring
retainer (41), the diaphragm support plate (6) and the
spacer plate (45) at the end of the spring package.
Lubricate the grooves in the spacer plate (45) with
Unisilikon GLK112 or Molykote III lubricant or similar,
and install the O-ring (52) in the groove.
Place the spacer plate (45) and the O-ring (52) on
the housing (1) and the lead-through plate (46).
Next the rolling diaphragm (7) is prepared as shown
in Figure 15 of Section 4.2.1.
20 24 23
2
1
4
51
46
47
50
6
7
49
54
2324 42 53 4552
59
Note:
Part 59: only EJ07-14
Fig. 17 Exchange of membrane at the spring end
50 47 59 46
Note:
Part 59: only EJ07-14
Fig. 18 Installation of lead-through bearing and
seal ring
Actu
ator
Screw (22, 53) Screw (25) Spring package
Thread Nm Thread Nm Hex.
size
Nm
EJ 05
EJ 07
EJ 10
EJ 12
EJ 14
M6
M8
M10
M12
M16
8,3
20
40
69
170
M8
M10
M12
M16
M20
10
15
25
40
60
13
19
24
30
36
10
15
25
40
60
Table 3. Screws (parts 22, 25 and 53) and spring pack-
age, tightening torques
9

Place the prepared rolling diaphragm (7) on the
spring retainer (41) of the spring package. Also,
place the diaphragm support plate (6) and the new
seal ring (51) on the rolling diaphragm.
Next, attach the spring package to the end of the gear
rod (4) by turning it by the fixed nut (54). Check, at the
same time, that the welded nut is intact. Tighten the
spring package with the nut (54) according to the
torque values given in Table 3. Secure the connection
by using Loctite 243 or similar.
Stretch the seal ring of the rolling diaphragm (7) into
the groove in the spacer plate (45) as described in
Section 4.2.1.
Install a new bearing (49) in the bearing slot of the
spring retainer (41).
Press the spring housing (42) until it touches the spacer
plate (45) while making sure that the bearing (49) remains
in its slot during the installation. Also, check that the seal
ring at the edge of the rolling diaphragm (7) remains in
the seal groove of the spacer plate (45), and thatthe edge
folds nicely inside the spring housing. If the folded rolling
diaphragmdoesnotfitwellinthespringhousing,lubricate
lightly with Unisilikon GLK112 or Molykote III lubricant.
Tighten all socket head screws (53) evenly accord-
ing to the torque table.
Install the stop screws (23) and nuts (24) at the end
of the spring housing (42) and the cylinder (2).
Finally, the required activator operation range is
adjusted with the stop screws (23) and nuts (24).
4.2 Detaching and attaching the drive shaft
Exchange of drive seal rings is carried out according to the
following procedure:
Detach the actuator from the valve and the positioner
or any other accessory from the actuator.
Remove the cross rec head screws (27) and the
coupling plate (15) from the top of the drive shaft (3).
Make a note of the drive shaft (3) position before detach-
ment. This can be done by marking the drive shaft position
in relation to the actuator housing (1). Marking can be done
using a marker or paint dots. Remove from the housing (1)
the drive shaft (3) and the guidance ring (16) which has
been attached with a pressure adapter, by using a
suitable tool, such as a hydraulic press.
NOTE:
Detaching the drive shaft from EJ05 occurs in a direction
that is different to that for other sizes, see Figure 20.
Removal of the EJ14 drive shaft also removes one of
the needle bearings.
Exchange the O-rings (35, 36) of the needle bear-
ings. During the exchange, it is important to add
lubricant (Exxon Unirex S2 or similar) to the O-rings
and needle bearings.
Bearing strip
in its groove
Unisilikon GLK 112 or Molykote III
in the membrane fold if necessary
Fig. 19 Installing the spring housing
Cylindrical pin
ø30 mm (max)
Cylindrical pin
ø40 mm (max)
27
15
F
27
15
31
3
EJ05
F
EJ07-14
1
3
16
1
Fig. 20 Detaching the drive shaft
Chiseled
mark
Y
Fig. 21 Determining drive shaft position
Type Y-measurement
mm / inch
EJ05
EJ07
EJ10
EJ12
EJ14
18 / 0.71
19 / 0.75
23.5 / 0.92
27.5 / 1.08
35.5 / 1.40
10

Next, place the drive shaft (3) back in the housing
(1) and lubricate the drive shaft teeth well before
installation (Unirex S2 or similar). Add plenty of lubri-
cant to the coupling plate side of the drive shaft
(EJ10, 12 & 14). It is important to observe the correct
position when attaching the drive shaft. Reassem-
bling is easier when using markings applied during
the dismantling stage. If markings have not been
made, proceed as follows:
The drive shaft has a chiseled mark which must be in
the position shown in Figure 21. It is located in the
middle of the threaded holes in the mounting interface
when the actuator gear rod is forced to its extreme
position by the compression spring. This will be the
caseif the stop screwof the actuator hasbeenadjusted
according to the Y dimension shown in Figure 21.
Push the drive shaft (3) into position using a suitable
press. When you have made sure that the drive shaft
is correctly installed, lock it in position with the guid-
ance ring (16), which is pushed into position with a
suitable press.
Next, attach the coupling plate (15) with cross rec
head screws (27) to the actuator shaft (3). Use screw
lock.
Next, test the function of the actuator using com-
pressed air (see Figure 5). Observe the safety meas-
ures in Section 1.5.
Finally,install the actuatorvalve, the optional actuator
positioner, and attach the air connections as de-
scribed in Section 3.
5 OPERATION FAILURES
Table 4 lists the failures that may occur as a result of
prolonged use or the influence of external factors.
6 REQUIRED TOOLS
Hex key set
Box key set
7 ORDERING SPARE PARTS
NOTE:
Use only original parts. This ensures that the actuator
works as intended.
When ordering parts, provide the following information:
The actuator type (shown on the ID-label and in the
actuator documentation).
Part list number, name and quantity or
Number of this manual, part number, name and
quantity
Occurrence Possible reason Measures
Operation is irregular and slow Air supply pressure is too low Check that the air supply pressure
corresponds to the minimum torque
required by the valve. Check that the
air supply tubes are large enough.
Positioner failure Check the function of the positioner
Valve failure Check that the valve works properly
without the actuator
Incorrect actuator size Check the sizing with the
manufacturer.
Rolling diaphragm leak Replace the rolling diaphragms. See
Section 4.2.
Backlash in the connection between
the device and the valve.
Replace the required parts.
Table 4. Operation failures
11

8 EXPLODED VIEWS AND PARTS LIST
8.1 Actuator EJ05
MADE IN FINLAND
MADE IN FINLAND
NELES FIELD CONTROLS OY
NELES FIELD CONTROLS OY
MAX PRESS
MAX PRESS
ISO 5211 F
ISO 5211 F
6
DATE
DATE
NO
NO
87
87
CHECK
CHECK
CAUTION Spring under compression! Remove first screws A, then screws B.
VARO Jnnitetty jousi! Ruuvit A poistettava ennen ruuveja B.
ACHTUNG Feder unter spannung! Erst schrauben A ffnen, dann schraube B.
ATTENTION Ressort sous tension! Enlever d’abord vis A, ensuite les vis B.
VARNING Belastad tryckfj der! Skruvarna A m ste avl gnas f re skruvarna B.
38
30
29
37
38
31
18
27
27
15
317
16
I
II
III
II III
23 24 22 22 2 22 22
25 26 6 7 5
4201
58
19
21
10
21
11
812 9
52 45 53 53 42 53
56
24 23
40, 41, 43, 44, 48, 54, 55, 57
20 51 46 47 50 6 7 49
EJU EJ EJA
Part Pcs Description Rec. spare part
1 1 Housing
2 2 Cylinder end
3 1 Drive shaft
4 1 Gear rod
5 2 Diaphragm retainer
6 2 Diaphragm support plate
7 2 Rolling diaphragm x
8 1 Clevis
9 1 Adjustment bushing
10 1 Ball bearing
11 1 Pin
12 1 Disc spring
II 2 Half bushing
I 1 Tightening screw
15 1 Coupling plate
16 1 Guidance ring
17 1 Needle bearing
18 1 Needle bearing
19 1 Breather
20 2 O-ring x
21 2 Support ring
22 8 Socket head screw
23 2 Socket head set screw
24 2 Hexagon nut
25 2 Hexagon screw
26 2 Seal ring x
Part Pcs Description Rec. spare part
27 2 Cross rec head screw
29 1 Pointer cover (only EJU)
30 1 Pointer (only EJU)
31 1 Retainer ring
III 2 Pin
37 1 O-ring (only EJU)
38 2 Cross rec head screw (only EJU)
40 1 Compression spring
41 1 Spring retainer
42 1 Spring housing
43 1 Spring plate
44 1 Diaphragm rod
45 1 Spacer plate
46 1 Lead-through plate
47 1 Lead-through bearing
48 1 Thrust bearing
49 1 Bearing strip x
50 1 Seal ring x
51 1 Seal ring x
52 1 O-ring x
53 4 Socket head screw
54 1 Hexagon nut
55 1 Washer
56 1 Filter
57 1 Retainer ring
58 1 Identification plate
12

8.2 Actuators EJ07-14
CHECK
CHECK
NELESFIELD CONTROLS OY
NELESFIELD CONTROLS OY
687
87
MADEIN FINLAND
MADEIN FINLAND
ISO5211 F
ISO5211 F
DATE
NO
NO
MAXPRESS
MAXPRESS
CAUTION Spring under compression! Remove first screws A, then screws B.
CAUTION Spring under compression! Remove first screws A, then screws B.
VARO J
VARO J
nnitettyjousi! Ruuvit A poistettava ennen ruuveja B.
nnitettyjousi! Ruuvit A poistettava ennen ruuveja B.
ACHTUNG Feder unter spannung! Erst schrauben A
ACHTUNG Feder unter spannung! Erst schrauben A
ffnen,dann schraube B.
ffnen,dann schraube B.
ATTENTION Ressort sous tension! Enlever d’abord vis A, ensuite les vis B.
ATTENTION Ressort sous tension! Enlever d’abord vis A, ensuite les vis B.
VARNING Belastadtryckfj
VARNING Belastadtryckfj
der!Skruvarna A m
der!Skruvarna A m
steavl
steavl
gnasf
gnasf
reskruvarna
reskruvarna
B.
B.
???????????????? ?????????! ?????? ??????? ????? ?, ? ????? ????? ?
???????????????? ?????????! ?????? ??????? ????? ?, ? ????? ????? ?
23 22 24 22
22 22 2 25 26 6 7 5 4
38
38
30
29
37
1
27
27
15
20 51 46 47 50 6 7 49
40, 41, 43, 44, 48, 54, 55, 57
24 23
56
18,
33,
36
I
II
III
16
II
III
58
18,
33,
36
3
21
11
21
10
17,
32,
35
20
812 9
52 45 53 53 53 42
EJ EJA
EJU
EJ14
28 28 19
59
Part Pcs Description Rec. spare part
1 1 Housing
2 2 Cylinder end
3 1 Drive shaft
4 1 Gear rod
5 2 Diaphragm retainer
6 2 Diaphragm support plate
7 2 Rolling diaphragm x
8 1 Clevis
9 1 Adjustment bushing
10 1 Ball bearing
11 1 Pin
12 1 Disc spring
II 2 Half bushing
I 1 Tightening screw
15 1 Coupling plate
16 1 Guidance ring
17 1 Needle bearing
18 1 Needle bearing
19 1 Breather
20 2 O-ring x
21 2 Support ring
22 4 Socket head screw
23 2 Socket head set screw
24 2 Hexagon nut
25 2 Hexagon screw
26 2 Seal ring x
27 2 Cross rec head screw
28 1 Plug
Part Pcs Description Rec. spare part
29 1 Pointer cover (only EJU)
30 1 Pointer (only EJU)
32 1 Bearing bushing
33 1 Bearing bushing
III 2 Pin
35 1 O-ring (upper) x
36 1 O-ring (lower) x
37 1 O-ring (only EJU )
38 2 Cross rec head screw (only EJU)
40 1 Compression spring
41 1 Spring retainer
42 1 Spring housing
43 1 Spring plate
44 1 Diaphragm rod
45 1 Spacer plate
46 1 Lead-through plate
47 1 Lead-through bearing
48 1 Thrust bearing
49 1 Bearing strip x
50 1 Seal ring x
51 1 Seal ring x
52 1 O-ring x
53 4 Socket head screw
54 1 Hexagon nut
55 1 Washer
56 1 Filter
57 1 Retainer ring
58 1 Identification plate
59 1 O-ring x
13

9 DIMENSIONS AND WEIGHTS
9.1 Actuator EJ
B
G1/4" VDI/VDE 3845 **
G
F max.
L
R
K K1 *
Z
VY
VDI/VDE 3845 G1/8" 4 x M5
80
30
Type Dimensions in mm Stroke
volume
dm3
MN
4 bar
Nm
Weight
kg
ZGFVYLKK1R Air
connection
EJ05 1.5 229 352 18 30 ø35 91 111 46 - 0.17 19 5
EJ07 1.5 293 443 23.4 36 ø55 117 137 58.5 G 1/4" 0.4 47 9.4
EJ10 2 403 606 32 46 ø70 155 175 77.5 G 1/4" 1.0 117 20.5
EJ12 2.5 522 770 42 59 ø85 200 220 100 G 1/4" 2.5 281 50
EJ14 3 692 1030 56 73 ø100 259 279 129.5 G 1/4" 6.0 691 107.5
Type Dimensions in inches Stroke
volume
in3
MN
116 psi
lbf ft
Weight
lb
ZGFVYLKK1R Air
connection
EJ05 0.06 9.02 13.86 0.71 1.18 ø1.35 3.58 4.37 1.81 - 10.5 14 11
EJ07 0.06 11.54 17.44 0.93 1.42 ø2.15 4.61 5.39 2.30 G 1/4" 24.5 34.5 21
EJ10 0.08 15.87 23.86 1.26 1.81 ø2.7 6.10 6.89 3.05 G 1/4" 61.0 86.5 45
EJ12 0.1 20.55 30.31 1.65 2.32 ø3.3 7.87 8.66 3.94 G 1/4" 152.5 206.5 110
EJ14 0.12 27.24 40.55 2.20 2.87 ø3.9 10.20 10.98 5.10 G 1/4" 366.0 509 237
*) VDI/VDE 3845 compatible mounting interface for accessories
**) VDI/VDE 3945 compatible mounting interface for solenoid valve
14

9.2 Connection dimensions
/ depth
number of holes
T
S
Q
P
łO M
U
N =
B
A
Keyways acc. to ANSI B17.1
Keyways acc. to DIN 6885
Split
Type Dimensions in mm
ISO 5211 O (H8)
max
MPQT SNABU
EJ05 F05 ø15 5 9.8 4.8 9.5 50 4 30 25 M6 / 12
EJ07 F07 ø15 5 9.8 4.8 9.5 70 4 44 27 M8 / 16
ø20 6 12.8 4.8 12.3 70 4 48 39
ø25 8 15.8 6.4 15.4 70 4 48 44
EJ10 F10 ø20 6 12.8 4.8 12.3 102 4 65 35 M10 / 20
ø25 8 15.8 6.4 15.4 102 4 65 60
ø30 8 18.3 6.4 18 102 4 65 60
ø35 10 20.8 9.6 21.8 102 4 65 60
EJ12 F12 ø20 6 12.8 4.8 12.3 125 4 78 40 M12 / 30
ø25 8 15.8 6.4 15.4 125 4 78 61
ø35 10 20.8 9.6 21.8 125 4 78 61
ø40 12 23.3 9.6 24.4 125 4 81 73
EJ14 F14 ø25 8 15.8 6.4 15.4 140 4 104 64 M16 / 32
ø30 8 18.3 6.4 18 140 4 104 64
ø35 10 20.8 9.6 21.8 140 4 104 84
ø40 12 23.3 9.6 23.4 140 4 104 85
ø45 14 26.3 12.8 28.1 140 4 104 85
ø50 14 28.8 12.8 30.6 140 4 104 85
Type Dimensions in inches
ISO 5211 O (H8)
max
MPQT SNABU
EJ05 F05 ø0.59 0.20 0.39 3/16 0.37 1.97 4 1.18 0.98 M6 / 0.47
EJ07 F07 ø0.59 0.20 0.39 3/16 0.37 2.76 4 1.73 1.06 M8 / 0.63
ø0.79 0.24 0.50 3/16 0.48 2.76 4 1.89 1.54
ø0.98 0.31 0.62 1/4 0.61 2.76 4 1.89 1.73
EJ10 F10 ø0.79 0.24 0.50 3/16 0.48 4.02 4 2.56 1.38 M10 /
0.79
ø0.98 0.31 0.62 1/4 0.61 4.02 4 2.56 2.38
ø1.18 0.31 0.72 1/4 0.71 4.02 4 2.56 2.38
ø1.38 0.39 0.82 3/8 0.86 4.02 4 2.56 2.38
EJ12 F12 ø0.79 0.24 0.50 3/16 0.48 4.92 4 3.07 1.57 M12 /
1.18
ø0.98 0.31 0.62 1/4 0.61 4.92 4 3.07 2.40
ø1.38 0.39 0.82 3/8 0.86 4.92 4 3.07 2.40
ø1.57 0.47 0.92 3/8 0.96 4.92 4 3.19 2.87
EJ14 F14 ø0.98 0.31 0.62 1/4 0.61 5.51 4 4.09 2.52 M16 /
1.26
ø1.18 0.31 0.72 1/4 0.71 5.51 4 4.09 2.52
ø1.38 0.39 0.82 3/8 0.86 5.51 4 4.09 3.31
ø1.57 0.47 0.92 3/8 0.96 5.51 4 4.09 3.35
ø1.77 0.55 1.04 1/2 1.11 5.51 4 4.09 3.35
ø1.97 0.55 1.13 1/2 1.20 5.51 4 4.09 3.35
15

10 TYPE CODE
Metso Field Systems Inc.
Europe, Levytie 6, P.O.Box 310, 00811 Helsinki, Finland. Tel.int [phone]. Fax int. [phone]
North America, 4300 Windfern, Houston, TX 77041, USA, Tel. int [phone], Fax. int. [phone]
North America, 3100 Medlock Bridge Road, Suite 250, Norcross, GA 30071, USA Tel. int. + 1 770 446 7818 Fax int. + 1 770 242 8386
Latin America, Av. Central, 181- Chácaras Reunidas, 12238-430, São Jose do Campos, Tel. int. [phone], Fax int. [phone]
Asia Pacific, 501 Orchard Road, #05-09 Wheelock Place, 238880 Singapore. Tel. int. [phone]. Fax int. [phone]
www.metsoautomation.com
Pneumatic single-acting double diaphragm actuator
series EJ
1. 2. 3. 4. 5. 6. 7. 8.
EJ07/20------
1. sign PRODUCT GROUP
EJ Single acting diaphragm actuator
2. sign ACTUATOR SIZE AND DIAMETER OF SHAFT BORE
(FOR ANSI AND DIN KEYWAYS)
05/15
07/15, 07/20, 07/25
10/20, 10/25, 10/30, 10/35
12/20, 12/25, 12/35, 12/40
14/25, 14/30, 14/35, 14/40, 14/45, 14/50
3. sign SPRING OPTIONS
-Standard construction without sign.
KLight spring
VStrong spring
4. sign FUNCTION
-Spring-to-close operation, without sign
ASpring-to-open operation
5. sign CONSTRUCTION
-Standard construction without sign
RSecondary handwheel operation.
YSpecial
6. sign INTERFACE FOR ADDITIONAL DEVICES
-Standard interface to the ND800/S4 valve controller without sign.
UInterface according to VDI/VDE 3845 standard (also used when no
additional devices are connected).
7. sign TEMPERATURE RANGES
-Standard construction without sign, for temperatures -20 °C to +70 °C.
HHigh temperature, for temperatures -20 °C to +120 °C.
CLow temperature, for temperatures -40 °C to +70 °C.
8. sign NON-STANDARD OPERATION RANGE, for example 30° to 70°
-Standard operation range 0°to 90°, without sign.
XThe Close position of the valve is restricted. When the Close
position is restricted, for example to 30°(the valve cannot be closed
completely), the marking is X=30.
ZThe Open position of the valve is restricted. When the Open
position is restricted, for example to 70°(the valve cannot be
opened completely), the marking is Z=70.
16