END ARMATUREN MGM Series Technical document

Combined operated
solenoid valves
.../AX..
(version acc. to European Directive 2014/34/EU(ATEX))
Mounting and Operating Manuel
for explosion proofed solenoids
END-Automation GmbH & Co. KG
D-32547 Bad Oeynhausen
+49 (0)5731 - 7901-0 www.end.de
Art.Nr.:�MEMG2S122243050
Serie:�220885
Betriebsdruck (PS):�0,5-16 bar
Steuerdruck:�-
Temperatur (TS):�-10°C ... °HZ:50C
Größe (DN):�50 / G2"
Prüfdr
uc
k (PT):�24 bar
Fluidgruppe:�1
Herstellung:�14.02.2002
END-Automation GmbH & Co. KG
D-32547 Bad Oeynhausen
+49 (0)5731 - 7901-0
www.end.de
Art.Nr.:�MEMG2Z325665015/AX
Serie:�406390/22349-05/04
Druckbereich (PS): 0 - 16 bar Volt: 230 V�
Temperatur (TS): -20 bis +80 °C Hz: 50
Prüfdruck (PT): 24 bar 86 mA
G/DN:
1
/
2
" Magnet-Nr.: 8336
Herstellungsdatum: 01/2004 Fluidgruppe: 1
�II 2GD EEx me II T4 130°C
�Kema 02 ATEX 1218 X
0032
END-Armaturen GmbH & Co. KG
Postfach (PLZ 32503) 100 341 · Oberbecksener Str. 78 · D-32547 Bad Oeynhausen - Germany · Telefon [phone] · Telefax [phone] · http://www.end.de

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© by END-Armaturen GmbH & Co. KG
All rights reserved. END-Armaturen GmbH & Co.KG claims copyright over this documentation.
This documentation may neither be altered, expanded, reproduced nor passed to third parties without the
written aggreement of END-Armaturen GmbH & Co. KG. This restriction also applies to the corresponding
drawings.
END-Armaturen GmbH & Co. KG has the right to change parts of the solenoid valves at any time without prior
or direct notice to the client. The contens of this publication are subject to change without notice.
This publication has been written with great care. However, END-Armaturen GmbH & Co.KG cannot be held
responsible, either for any errors occuring in this publication or for their consequences.
The products are specified by the statements in this documentation; no assurance of the properties is given.
END-Armaturen GmbH & Co. KG
Oberbecksener Straße 78
D-32547 Bad Oeynhausen
Telefon: 05731 / 7900 - 0
Telefax: 05731 / 7900 - 199
Internet: http://www.end.de
E-Mail: [email protected]
Edition: 04/2016
Impressum

solenoid valves - 04/2016 http://www.end.de 3
Contents
Contents
1 Foreword 5
2 General advice 6
2.1 Valivity 6
2.2 Inward monitoring 6
2.3 Complaints 6
2.4 Guarantee 7
2.5 Symbols and their signification 7
3 Safety advice 8
3.1. Personal protection 8
3.1.1. Safety advice for mounting 8
3.1.2 Safety advice for adjustment and initial starting 9
3.2 Device safety 10
4 Device variants 11
4.1 Device variants 11
4.2 Technical data 12
4.2.1 Technical data solenoid valve: ME(MB)..2Zxxxxxxxxx/AX 12
4.2.1 Technical data solenoid valve: MG..2Zxxxxxxxxx/AX 12
4.3 Corresponding use 12
4.4 Name-plate 13
4.5 Description of function 14
4.5.1 Combined operated solenoid valve 14
4.6 Options 15
4.6.1 Manual override 15
4.6.2 Chemical nickel-plated 16
4.6.3 Normally open 16
4.6.4 Free of oil and grease 16
4.6.5 Speed control 16
4.6.6 Electrical position indicator (contactless) 17
5 Mounting / disassembly 18
5.1 Mounting 18
5.1.1 Mounting of a solenoid valve with threaded connection 18
5.1.2 Mounting of a solenoid valve with welded connection. 19
5.1.2.2 Protection of seals / diaphragm by disassembling 19
5.2 Electrical installation 20
5.2.1 Wiring 20
5.3 Disassembly 21
5.3.1 Electrical disassembly 21
5.3.2 Mechanical disassembly 22
6. Initial operation 22
7. Faults 23
7.1 Fail causes 23

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8 Maintenance / Cleaning 23
8.1 Maintenance 23
8.2 Cleaning 23
9 Declaration of conformity 24
Contents

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1 Foreword
Dear customer, Dear assembler / user
these operation and installation manuals are intended to give you the knowledge which is
necessary for you to be able to carry out the mounting and adjustment of a solenoid valve rapidly
and correctly.
Please read these instructions carefully and pay particular attention to the advice and warning
notes.
Only instructed and qualified mechanics should mount, adjust or maintain the solenoid valves.
The solenoid valves will be deliver in several versions relative to
- ways
- operations
- material
- type of voltage and rated voltage
- connection type and connection size
There are also several options available.
With accessories
- speed control
- electric position indication
- manual override
could take place.
If you have any question concerning to the solenoid valves we shall be pleased to answer them.
The telephone number will be found on the inside cover of this operation and installation manual.
Yours
END-Armaturen GmbH & Co. KG
Foreword

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2 General advice
2.1 Valivity
These mounting and operating manual is valid for the explosion proofed version of the solenoid
valves:
MGMx2Zxxxxxxxxx/AX..
MEMG2Zxxxxxxxxx/AX..
MEMF2Zxxxxxxxxx/AX..
MBxx2Zxxxxxxxxx/AX..
also before mentioned solenoid vavles with welded connections
and their variants:
- with X as a perface to the type
- and a appendage to the type (e.g. /A05).
2.2 Inward monitoring
Please check
- directly after delivery the solenoid valve for any transport damages and deficiencies.
- with reference to the accompanying delivery note the number of parts.
Do not leave any parts in the package.
2.3 Complaints
Claims for replacement or goods which relate to transport damage can only be considered valid if
the parcel service / forwarder has notified without delay.
In case of returns (because of transport damage / repairs), please make a damage protocol and
send the parts back to END-Armaturen, if possile in the orginal packaging.
In case of a return, please mention the following:
• Name and address of the consignee
• Order-/ article-number
• Description of the defect.
General advice
Advice
The products descript in this documentation in the conditions of our delivery are partly completed
machinery according to annex 2 paragraph g of the directive 2006/42/EC on machinery, which must
not be put into service until the final machinery into which it is to be incorporated has been declared
in conformity with the provisions of the Directive 2006/42/EC on machinery, where appropriate.
Please take notice to the Declaration of incorporation and the assembly instruction.

solenoid valves - 04/2016 http://www.end.de 7
2.4 Guarantee
For our solenoid valve we give a guarantee period in accordance with the sales contract.
The end of the normal duration of life of the wearing parts represents no defect.
The warrently and guarantee rules of END-Armaturen GmbH & Co. KG are applicable.
2.5 Symbols and their signification
Paragraphs which are idntified with this symbol contain very important advices, this also includes
advices for averting health risks. Observe these paragraphs without fail!
Paragraphs which are identified with this symbol contain very important advices, this also includes
how to avoid damage to property. Observe these paragraphs without fail!
This symbols indicates paragraphs which contain comments / advices or tips.
This spanner identifies the description of actions which you should carry out.
Symbols and their signification

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3 Safety advice
Depending on the technical circumstances and the time under and at which the solenoid valve
is mounted, adjusted and commissioned, in each case you have to take into account particular
safety aspects
If, for example, the valve works in an operational chemical plant, the potential hazards of commis-
sioning have another dimension in case this is carried out for test purposes on a „dry“ part of the
plant in the assembly room.
Since we do not know the circumstances at the time of mounting / adjusting / commissioning you
may find advice on hazards in the following description which are not relevant to you.
Please observe (only) the advice which applies to your situation!
3.1. Personal protection
3.1.1. Safety advice for mounting
We wish to point out expressly that the mounting, the electrical installation and the adjustment of
the solenoid valves and the accesories must be carried out only by trained specialised personnel
having mechanical and electrical knowledge.
Don`t move off the coil from the tube by switched on power supply.
At first switch off all the devices / machines / plant affected by mounting or repair.
If appropriate, isolate the devices / machines / plant from the main.
Check (for example in chemical plants) whether the switching off of the devices / machines /
plant will causes potential danger.
If appropriate, in case of a fault in the solenoid valve (in a system which is in operation) inform
the shift foreman / safety engineer or the works manager without delay about the fault, in order,
for example, to avoid an outflow / overflow of chemicals or the discharge of gases in good time
by means of suitable measures!
Before mounting or repair, remove the pressure from pneumatic / hydraulic devices / machines
/ plant!
Drain the conduit from medium.
If necessary, set up warning signs in order to prevent the inadvertent starting up of the device /
machine / plant.
Observe the respective relevant professional safety and accident prevention regulations when
carrying out the mounting / repair.
Check the correct functioning of the safety equipment ( for example the emergency push off
buttons / safety vales, etc).
Safety advice

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Safety advice
3.1.2 Safety advice for adjustment and initial starting
As a result of the starting a solenoid valve the flow of gases, stem. liquids, etc. may be enabled or
interrupted!
By starting the device / machine observe that the solenoid valve may be in an undefinied opera-
ting position. By this uncontrollable movements could happen.
Assure yourself that, as the result of the starting or the test adjustment of the solenoid valve, no
potential hazard will be produced for the personnel or the invironment.
If necessary, set up warning signs in order to prevent the inadvertent starting up or shutting down
of the devices / machine / plant!
By ending mounting check the correct function and the tightness of the solenoid valve.
Check the right position and correct function of perhaps mounted accessories.
Check the right function of all safety devices (for example emergency push off buttons; etc.)!
Carry out the starting and the adjustment only in accordance with the instructions discribed in this
documentation.

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3.2 Device safety
The solenoid valve
- is a quality product which is produced in accordance with the recognized industrial regulations.
- left the manufacturer`s work in a perfect condition!
In order to maintain this condition, as installer / user you must carry out your task in accordance
with the descriptions in these instructions, technically correctly and wirh the greatest possible
precision!
We assume that you have, as a trained specialist, sound mechanical and electrical knowledge.
The solenoid valve must be used only for a purpose corresponding to its construction.
The solenoid valve must be used within the values specified in the technical data.
Satisfy yourself that, as a result of the mounting, the commissioning or as a result of the test adjus-
tments of the solenoid valve, no potential hazards will be produced for devices / machine / plant!
Warning! Danger of burns.
In case of the working conditions, a extrem heating up of the coils will be possible.
At explosion proofed solenoid valves the max. permitted surface temperature of the equipment is
classified in temperature classes. The temperatures won`t be exceeded in the respective tempe-
rature class:
T1: max. 450°C;
T2: max. 300°C;
T3: max. 200°C;
T4: max. 135°C;
T5: max. 100°C;
T6: max. 85°C.
Open the solenoid valve only to such an extant as described in this documentation!
Don`t mount the solenoid valve, start the solenoid valve or carry out any adjustments on it, if the
solenoid valve, the supply lines or the part of the plant on which it is mounted is damaged.
By ending mounting check the correct function and the tightness of the solenoid valve.
At installation in the open or moist ambient you have to take special measures to protect the
solenoid valve against moisture.
Safety advice

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Device variants
4 Device variants
4.1 Device variants
The solenoid valves can be delivered in various applications.
The following table explains the composition of the article number to you. These article numbers
will be mentioned on the name plate:
For example: MGMG2Z126247015/AX
Solenoid valve with B.S.P. thread acc. to DIN ISO 228T1, 2/2-ways,
combiend operated, body: brass, seals: NBR, explosion proofed solenoid,
24V DC, solenoid size 21 watts, connecting size G 1/2“
1. - 2. Digit
Product
3. Digit
Type
4. Digit
Connection
5. Digit
Ways
6. Digit
Operation
7. Digit
Body material
ME
MG
MG= B.S.P thread
acc. to
DIN ISO 228 T1
A= welded connetion
DIN 3293
L= welded connection
ISO 4200
M = welded connection
DIN 11850-R2
F= flanges acc. DIN
2531 / 2533 / 2545
2= 2/2-ways Z= combiend operated 1= brass
3= stainless steel
8. Digit
Seals material
9. Digit
Type of voltage
10. Digit
Voltage
11. - 12. Digit
Solenoid type
2= NBR
3= FKM
4= EPDM
5= EEx me II T4 (AC)
6= EEx me II T4 (DC)
7= EEx md II T4 (AC)
8= EEx md II T4 (DC)
2= 24V
3= 42V
4= 110V
5= 205V
6= 230V
82 = 10 watts
47 = 23 watts
51 = 30 watts
54 = 47 watts
65 = 22 watts
13. - 15. Digit
Connection size
16. - 20. Digit
Options
NO = Normally open
OF = Free of oil and grease
SR = Speed control
Flanged and, Threaded
welded connection connection
006 = = G ⅛
008 = = G ¼
010 = = G ⅜
015 = DN 15 = G ½
020 = DN 20 = G ¾
025 = DN 25 = G 1
032 = DN 32 = G 1¼
040 = DN 40 = G 1½
050 = DN 50 = G 2
065 = DN 65 = G 2½
080 = DN 80 = G 3
100 = DN 100 = G 4
125 = DN 125
150 = DN 150
Explanation of article number composition for direct acting solenoid valves
Art. MGxxxx / MExxxx
AX = Version acc. to ATEX (obligatory)
CN = Chemical nickel-plated
HN = Manual override

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4.2 Technical data
4.2.1 Technical data solenoid valve: ME(MB)..2Zxxxxxxxxx/AX
The below table shows the technical data of the solenoid for explosion proofed solenoid valves
with explosion proof identification:
II 2GD bzw. II 2 G
EEx m (e) II T3/T4
T = 140°C bzw. T = 110°C
- dimensioning current
- Each solenoid operator has to be protected by a fuse according to the rated current
(max. 3x rated current according DIN 41571 or IEC 127) resp. Motor protection switch with
short-circuit and fast thermal tripping protection. The fuse can be accommodated in the
associated device or must be added separately.
The fuse voltage has to be equal or higher than the rated soleniod voltage. The shutdown
capability has to be equal or higher than the max. assumed short-circuit current at the
installation point.
4.3 Corresponding use
The soleniods are only licensend in connection with the supplied valves. The combination of valves
and solenoid must be selected by the manufacturer or his representative.
The solenoid coil is an encapsulated safe electrical work equipment group II, designed for applica-
tion in atmospheres according to category 2G (zone 1+ zone 2) / 2D (zone 21 + zone 22).
By using the described solenoid valve, observe , that the flow rate of explosive media inside the
valve will be less than:
 v≤2m/sforexplosiveliquidmediaand
 v≤20m/sforexplosivegases.
Device variants
Series K05932.. K05924.. K05927..
Rated voltage [V] 12 - 230 V 12 - 230 V 24 - 230V
Rated current [mA]2000 - 100 2700 - 140 2100 - 220
Rated power [W] 23 30 47
Ambient temperature
-20°C ... +40°C -20°C ... +40°C -20°C ... +40°C
4.2.1 Technical data solenoid valve: MG..2Zxxxxxxxxx/AX
The below table shows the technical data of the solenoid for explosion proofed solenoid valves
with explosion proof identification:
II 2 G em II T4
II 2 D IP65 T130°C
Series 8336 ... 8345 8436 ... 8445 9236 ... 9245 9336 ... 9345
9350 ... 9360
Rated voltage [v] 12 - 440 V DC
24 - 400 V AC
Rated current [mA]50 - 1830 90 -3330 30 - 1000 41 - 1500
Rated power [W] 22 40 12 18
Ambient temperature
-20°C ... +40°C -20°C ... +40°C -20°C ... +40°C -20°C ... +40°C

solenoid valves - 04/2016 http://www.end.de 13
Name-plate
4.4 Name-plate
The solenoid valves will be provided with a name-plate, which permitts a definite identification
of the valve and shows the most important technical data to you. The name-plate should not dis-
placed or changed.
Fig. 4.1 - Name-plate
Art.Nr. article number of the valve (see also chapter 4 „device variants“)
Serie serial or production number
Betriebsdruck (PS) max. pressure range of the valve [bar]
Temperatur (TS) max. temperature range of the valve
Größe (DN) connection size of the valve
Prüfdruck (PT) testing pressure of the valve and the solenoid system
Fluidgruppe allowed fluid group of the valve
Herstellung date of manufacturing
Typ / NR.: description of the solenoid system
UN: 24V: rated voltage [V]
Hz.: DC: direct current
IN: 0,94 A: rated current [A]
PN: 23 W: rated power [W]
PTB 03 ATEX 2095 X: number of the certificate issued by a registration entity
II 2G EEx em II T4
II 2D IP65 T130°C: explosion proof identification
100%ED: duty cycle
END-Automation GmbH & Co. KG
D-32547 Bad Oeynhausen
+49 (0)5731 - 7901-0 www.end.de
Art.Nr.: MEMG2S122243050
Serie: 220885
Betriebsdruck (PS): 0,5-16 bar
Steuerdruck: -
Temperatur (TS): -10°C ... +80°C
Größe (DN): 50 / G2"
Prüfdruck (PT): 24 bar
Fluidgruppe: 1
Herstellung: 14.02.2002
END-Armaturen GmbH & Co. KG
D-32547 Bad Oeynhausen
+49 (0)5731 - 7900-0 www.end.de
Art.Nr.: MGMG2Z126247015
Serie: 220885
Betriebsdruck (PS): 0 - 16 bar
Steuerdruck: -
Temperatur (TS): -10°C ... +50°C
Größe (DN): G 1/2"
Prüfdruck (PT): 24 bar
Fluidgruppe: 1
Herstellung: 18.08.2003
END-Automation GmbH & Co. KG
D-32547 Bad Oeynhausen
+49 (0)5731 - 7901-0 www.end.de
Art.Nr.: MEMG2S122243050
Serie: 220885
Betriebsdruck (PS): 0,5-16 bar
Steuerdruck: -
Temperatur (TS): -10°C ... +80°C
Größe (DN): 50 / G2"
Prüfdruck (PT): 24 bar
FluidgEDrEDuppe: 1
END-Armaturen GmbH & Co. KG
D-32547 Bad Oeynhausen
+49 (0)5731 - 7900-0 www.end.de
Typ: KO593210
NR.: 6.2261.002
UN: 24 V Hz.: DC
IN: 0,94A PN: 23 W Dat.: 06/03
PTB 03 ATEX 2095 X Prüf.: 010
II2G EEx em II T4
II2D IP65 T130°C
100% ED
ACHTUNG: Betriebsanleitung beachten
0102
END-Automation GmbH & Co. KG
D-32547 Bad Oeynhausen
+49 (0)5731 - 7901-0 www.end.de
Art.Nr.: MEMG2S122243050
Serie: 220885
Betriebsdruck (PS): 0,5-16 bar
Steuerdruck: -
Temperatur (TS): -10°C ... +80°C
Größe (DN): 50 / G2"
Prüfdruck (PT): 24 bar
Fluidgruppe: 1
Herstellung: 14.02.2002
END-Armaturen GmbH & Co. KG
D-32547 Bad Oeynhausen
+49 (0)5731 - 7900-0 www.end.de
Art.Nr.: MGMG2Z126247015
Serie: 220885
Betriebsdruck (PS): 0 - 16 bar
Steuerdruck: -
Temperatur (TS): -10°C ... +50°C
Größe (DN): G 1/2"
Prüfdruck (PT): 24 bar
Fluidgruppe: 1
Herstellung: 18.08.2003
END-Automation GmbH & Co. KG
D-32547 Bad Oeynhausen
+49 (0)5731 - 7901-0 www.end.de
Art.Nr.: MEMG2S122243050
Serie: 220885
Betriebsdruck (PS): 0,5-16 bar
Steuerdruck: -
Temperatur (TS): -10°C ... +80°C
Größe (DN): 50 / G2"
Prüfdruck (PT): 24 bar
FluidgEDrEDuppe: 1
END-Armaturen GmbH & Co. KG
D-32547 Bad Oeynhausen
+49 (0)5731 - 7900-0 www.end.de
Typ: KO593210
NR.: 6.2261.002
UN: 24 V Hz.: DC
IN: 0,94A PN: 23 W Dat.: 06/03
PTB 03 ATEX 2095 X Prüf.: 010
II2G EEx em II T4
II2D IP65 T130°C
100% ED
ACHTUNG: Betriebsanleitung beachten
0102
Fig. 4.2 - Additional name-plate for explosion proofed solenoid valves

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Description of function
4.5 Description of function
4.5.1 Combined operated solenoid valve
This type of valves does not require any pressure difference for opening and shutting the main
closing element. According to the indecated pressure diagrams they work from 0 bar upwards.
The plunger is connected to the diaphragm witch is fitted with a pilot nozzle. The attraction of the
plunger therefore causes the pilot nozzle to open, and the ensuing pressure lifts the diaphragm;
this action is further reinforced by the opening stroke of the plunger. Thus a combination of direct
(plunger) and indirect (diaphragm) operations ensure full passage even at low pressures, and ope-
rations and seal remain regular even at 0 bar pressure.
By taking advantage of the surface differences, this type of valves enables operating big-size
vavles with high pressure, the actuators being comparatively small as against direct-acting valves.
The actuator stroke must be at least as high as the valve lift. The force must be sufficient for ope-
ning the pilot bore and the main closing element against the spring force.
Fig. 4.3 -Combined operated solenoid valve: standard- application

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Description of function
Fig. 4.4 - description of function:Manual override
4.6 Options
4.6.1 Manual override
At the option „manual override“ the combined operated solenoid valve will be actuated by a hand
wheel. The main closing element of the combined operated solenoid valve will be lift up by turning
round a spindle with a hand wheel.

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Options
4.6.2 Chemical nickel-plated
The body of the solenoid valve will be nickel-plated to protect the surface against aggressive
media.
4.6.3 Normally open
In this case the de-energized solenoid valve will be hold in the open position by spring force, the
energized solenoid closes the valve.
These solenoid valves should only be used with DC - coils.
4.6.4 Free of oil and grease
All part of the solenoid valve which can come into contact with pure oxygen will be clean up of oil
and grease to avoid the formation of explosive gases.
4.6.5 Speed control
With the speed control you can change the diameter of the pilot drilling at a combined operated
solenoid valve. Therefore a control of the closing time will take place. This option isn`t available for
solenoid valves with a connection size ½“and smaller sizes.
Fig. 4.5 - Description of function: speed control
+
-
+
-

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Options
4.6.6 Electrical position indicator (contactless)
The electrical position indicator is needed to show the operation condition of a solenoid valve over
a great distance. It is also possible to indicate a signal to a control device. Therefore are different
types of limit switches available: Reed contact or inductive proximity limit switches.
A separate Declaration of conformity and the user`s manual of the switch will be sent to you with
the solenoid valve.

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5 Mounting / disassembly
5.1 Mounting
The mounting of the solenoid valves ristricts to
- the mechanical mounting into the prescribed pipes
- the electrical mounting of the solenoid valves and perhaps the mounting of accessories.
The installation of direct acting solenoid valves can be according your needs.
The installation with a vertical standing coil should be prefered.
In the following description we assume that you have read the former chapters attentive. We also
assume that you will observe the safety advices and warnings from chapter 3 „Safety advices“
during the mounting / disassembly.
If you have not read chapter 3 „safety advices“ until now, read these important advices now and
turn back to this page.
The mounting and the electrical installation must be carried out only by trained specialised per-
sonel with mechanical and electrical knowledge.
The mechanical installation are the same by all applications. It differs only by the type of connec-
tion.
Observe the flow direction, specified on the valve body.
Before mounting the solenoid valve clean up the pipes. Pollution will reduce the safety and the
duration of life of the valve. If necessary mount a Y-strainer upstream the valve.
Avoid strains of the body by non align pipes.
At installation in the open or moist ambient you have to take special measures to protect the
solenoid valve against moisture.
5.1.1 Mounting of a solenoid valve with threaded connection
Before lay on sealing compounds, check the hardly screwing of the pipes into the valve body.
Lay on the correct sealing compounds on the pipes end. By using PTFE-ribbon or hemp sealings
observe the screw direction . Don`t use sealing compounds which are not prescribed for your
employment.
Screw the pipes into the connection ends of the valve body. Don`t use the solenoid as a lever.
Strike up the pipes with pressure after that time the manufacturer of the sealing compounds pre-
tends for harden it.
Check the tightness of all connections.
Mounting / disassembly

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5.1.2 Mounting of a solenoid valve with welded connection.
By welding the valve body with the pipes observe appropriate demands and guide lines.
The safety demands by welding are depending on the place and the position of the point of weld.
Welding the parts at a serviceable device / machine / plant the potential of danger is as higher
as welding the parts in a welding room.
If appropriate, inform the shift foreman / safety engineer or the works manager and the fire bri-
gade of your factory.
By welding observe your own national guide lines about safety and prevention of accidents.
Before welding the solenoid body between the pipes you have to take measures to prevent the
damage of the sealings or diaphragm.
5.1.2.2 Protection of seals / diaphragm by disassembling
Clamp the valve between a vice carefully. By using guard plates you can prevent the damage of
the ends of the body.
Loosen the screws of the cap by using a fit spanner.
Turn out the screws of the valve body and take the cap byside carefully. Remove the diaphragm
from the valve body. If you should disassemble some solenoid valves, places marks on the body,
diaphragm and the caps that you will be able to join the correct parts by a subsequent mounting
of the solnoid valves.
Mounting / disassembly

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5.2 Electrical installation
At the explosion proofed version the connecting cable is spilt with the soleniod body. It should
not be open on no account.
If connecting the lead wires make ensure the wire ends or the leads are properly inserted to the
electrical terminal.
Connecting cable and wires should be free of sharp bends in order to avoid short circuits and
interruptions.
Before initial operation of the device make sure that the overall equipment or unit respectively
meets the requirements of the EMC directive.
Each solenoid operator has to be protected by a fuse according to the rated current (max. 3x
rated current accord. DIN 41571 or IEC 127) resp. Motor protection switch with short-circut and
fast thermal tripping protection. The fuse can be accommodated in the associated device or must
be added separately.
The fuse voltage has to be equal or higher than the rated solenoid voltage. The shutdown capa-
bility has to be equal or higher than the max. assumed short-circut current at the installation
point.
5.2.1 Wiring
Mounting / disassembly
Fig. 5.1 - Mounting / disassembly - wiring
Spulenschaltung - Gleichstrom
blau
braun
gelb
Spulenschaltung - Wechselstrom
blau
braun
gelb
Wiring - DC
blue
brown
yellow
Wiring - AC
blue
brown
yellow