GEM 205 User manual

GEMÜ 205
Electrically operated solenoid valve
Operating instructions
EN
further information
webcode: GW-205

All rights including copyrights or industrial property rights are expressly reserved.
Keep the document for future reference.
© GEMÜ Gebr. Müller Apparatebau GmbH & Co. KG
28.04.2022
www.gemu-group.com2 / 24GEMÜ 205

Contents
1 General information ............................................. 4
1.1 Information .................................................... 4
1.2 Symbols used ................................................ 4
1.3 Definition of terms ........................................ 4
1.4 Warning notes ............................................... 4
2 Safety information ............................................... 5
3 Product description ............................................. 5
3.1 Construction .................................................. 5
3.2 Description ..................................................... 5
3.3 Function ......................................................... 5
3.4 Product label ................................................. 6
4 Correct use .......................................................... 6
5 Order data ........................................................... 7
6 Technical data ..................................................... 8
7 Dimensions .......................................................... 9
8 Manufacturer's information .................................. 12
8.1 Delivery .......................................................... 12
8.2 Transport ....................................................... 12
8.3 Storage ........................................................... 12
8.4 Scope of delivery ........................................... 12
9 Installation in piping ............................................ 12
10 Electrical connection ........................................... 13
11 Commissioning .................................................... 14
12 Operation ............................................................. 15
13 Inspection and maintenance ................................ 15
14 Troubleshooting .................................................. 17
15 Removal from piping ............................................ 18
16 Disposal .............................................................. 18
17 Returns ................................................................ 18
18 Declaration of Incorporation according to
2006/42/EC (Machinery Directive) ....................... 19
19 Declaration of conformity according to 2014/30/
EU (EMC Directive) ............................................... 20
20 Declaration of conformity according to 2014/68/
EU (Pressure Equipment Directive) ...................... 21
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1 General information
1 General information
1.1 Information
- The descriptions and instructions apply to the standard ver-
sions. For special versions not described in this document
the basic information contained herein applies in combina-
tion with any additional special documentation.
- Correct installation, operation, maintenance and repair work
ensure faultless operation of the product.
- Should there be any doubts or misunderstandings, the Ger-
man version is the authoritative document.
- Contact us at the address on the last page for staff training
information.
1.2 Symbols used
The following symbols are used in this document:
Symbol Meaning
Tasks to be performed
Response(s) to tasks
– Lists
1.3 Definition of terms
Working medium
The medium that flows through the GEMÜ product.
1.4 Warning notes
Wherever possible, warning notes are organised according to
the following scheme:
SIGNAL WORD
Type and source of the danger
Possible
symbol for the
specific
danger
Possible consequences of non-observance.
Measures for avoiding danger.
Warning notes are always marked with a signal word and
sometimes also with a symbol for the specific danger.
The following signal words and danger levels are used:
DANGER
Imminent danger!
▶Non-observance can cause death or
severe injury.
WARNING
Potentially dangerous situation!
▶Non-observance can cause death or
severe injury.
CAUTION
Potentially dangerous situation!
▶Non-observance can cause moderate
to light injury.
NOTICE
Potentially dangerous situation!
▶Non-observance can cause damage to
property.
The following symbols for the specific dangers can be used
within a warning note:
Symbol Meaning
Danger of explosion
Hot plant components!
Risk of electric shock

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2 Safety information
The safety information in this document refers only to an indi-
vidual product. Potentially dangerous conditions can arise in
combination with other plant components, which need to be
considered on the basis of a risk analysis. The operator is re-
sponsible for the production of the risk analysis and for com-
pliance with the resulting precautionary measures and re-
gional safety regulations.
The document contains fundamental safety information that
must be observed during commissioning, operation and main-
tenance. Non-compliance with these instructions may cause:
- Personal hazard due to electrical, mechanical and chemical
effects.
- Hazard to nearby equipment.
- Failure of important functions.
- Hazard to the environment due to the leakage of dangerous
materials.
The safety information does not take into account:
- Unexpected incidents and events, which may occur during
installation, operation and maintenance.
- Local safety regulations which must be adhered to by the
operator and by any additional installation personnel.
Prior to commissioning:
1. Transport and store the product correctly.
2. Do not paint the bolts and plastic parts of the product.
3. Carry out installation and commissioning using trained
personnel.
4. Provide adequate training for installation and operating
personnel.
5. Ensure that the contents of the document have been fully
understood by the responsible personnel.
6. Define the areas of responsibility.
7. Observe the safety data sheets.
8. Observe the safety regulations for the media used.
During operation:
9. Keep this document available at the place of use.
10. Observe the safety information.
11. Operate the product in accordance with this document.
12. Operate the product in accordance with the specifications.
13. Maintain the product correctly.
14. Do not carry out any maintenance work and repairs not de-
scribed in this document without consulting the manufac-
turer first.
In cases of uncertainty:
15. Consult the nearest GEMÜ sales office.
3 Product description
3.1 Construction
4
5
1
2
3
Item Name Materials
1 Plug PA
2 Optical position
indicator
PVC
3 Manual override PBT
4 Valve housing PBT
5 Valve body PVC-U, grey or PVDF
Seal materials FPM, PTFE or EPDM
3.2 Description
The GEMÜ 205 directly controlled 2/2-way plastic solenoid
valve has a high performance coil. It is hermetically separated
from the medium by means of a flexible PTFE bush. The
armature is sealed by a bellows made of PTFE backed by an
additional safety diaphragm. The plug has a rectifier for use
with an AC supply. A manual override and an optical position
indicator are integrated as standard.
3.3 Function
The GEMÜ 205 directly controlled 2/2-way plastic solenoid
valve is designed for controlling media.
When the valve is closed the medium flows into the valve
body and presses onto the piston. The valve remains closed.
Observe the permissible operating pressure (see “Technical
data“, page8).
Fig.1: Valve CLOSED
CAUTION
Operating pressure too high
▶Damage to the solenoid / destruction of the solenoid.
3 Product description

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4 Correct use
NOTICE
Operating pressure too high
▶The valve cannot be opened electromagnetically if the op-
erating pressure is too high.
When voltage is applied the solenoid in the valve actuator is
activated and lifts the armature. This opens the valve outlet.
Fig.2: Valve OPEN
3.4 Product label
The product label is located on the actuator. Product label
data (example):
- XXXXXXXX|YYYY
Design in accordance with order data
Device-specific data
Year of manufacture
Item number Traceability number Consecutive number
The month of manufacture is encoded in the traceability num-
ber and can be obtained from GEMÜ. The product was manu-
factured in Germany.
The operating pressure stated on the product label applies to
a media temperature of 20 °C. The product can be used up to
the maximum stated media temperature. You can find the
pressure/temperature correlation in the technical data.
4 Correct use
DANGER
Danger of explosion
▶Risk of severe injury or death.
●Only versions that have been approved
according to their technical data may
be used in potentially explosive envir-
onments.
WARNING
Improper use of the product
▶Risk of severe injury or death.
▶Manufacturer liability and guarantee will be void.
●Only use the product in accordance with the operating
conditions specified in the contract documentation and in
this document.
The product is designed for installation in piping systems and
for controlling a working medium.
1. Use the product in accordance with the technical data.
2. Protect the product from direct weathering.

5 Order data
The order data provide an overview of standard configurations.
Please check the availability before ordering. Other configurations available on request.
Order codes
1 Type Code
Solenoid valve, directly controlled,
optical position indicator,
manual override
205
2 DN Code
DN 10 10
DN 15 15
DN 20 20
DN 25 25
DN 32 32
DN 40 40
DN 50 50
3 Body configuration Code
2/2-way body D
4 Connection type Code
Spigot DIN 0
Threaded socket DIN ISO 228 1
Solvent cement socket DIN 2
Union end with insert (socket) – DIN 7
Imperial butt weld spigot 30
4 Connection type Code
Threaded socket NPT 31
5 Valve body material Code
PVC-U, grey 1
PVDF 20
6 Seal material Code
FPM 4
PTFE 5
EPDM 14
7 Control function Code
Normally closed (NC) 1
8 Voltage Code
24 V 24
120 V 120
230 V 230
9 Frequency Code
DC DC
50 - 60 Hz 50/60
Order example
Ordering option Code Description
1 Type 205 Solenoid valve, directly controlled,
optical position indicator,
manual override
2 DN 15 DN 15
3 Body configuration D 2/2-way body
4 Connection type 0 Spigot DIN
5 Valve body material 1 PVC-U, grey
6 Seal material 5 PTFE
7 Control function 1 Normally closed (NC)
8 Voltage 230 230 V
9 Frequency 50/60 50 - 60 Hz
5 Order data
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6 Technical data
6.1 Medium
Working medium: Corrosive, inert, gaseous and liquid media which have no negative impact on the physical and
chemical properties of the body and seal material.
6.2 Temperature
Media temperature: PVC-U, grey (code 1): 10 to 60 °C
PVDF (code 20): -20 to 100 °C
Ambient temperature: 10 — 40 °C
Storage temperature: 0 — 40 °C
6.3 Pressure
Operating pressure: DN 10 DN 15 DN 20 DN 25 DN 32* DN 40 DN 50
0 - 6.0 0 - 2.0 0 - 1.0 0 - 1.0 0 - 1.0 0 - 0.2 0 - 0.2
* 24 V DC: 0 – 0.5 bar
All pressures are gauge pressures.
Nominal size corresponds to valve seat diameter.
Kv values: DN 10 DN 15 DN 20 DN 25 DN 32 DN 40 DN 50
0.8 1.8 2.3 6.0 7.5 9.5 12.5
Kv values in m³/h
Leakage rate: Seat seal Standard Test procedure Leakage rate Test medium
EPDM, FKM, PTFE DIN EN 12266-1 P12 A Air
6.4 Product compliance
Machinery Directive: 2006/42/EC
Low Voltage
Directive:
2014/35/EU
EMC Directive: 2014/30/EU
Technical standards used:
EN 55011:1991 (150 kHz to 30 MHz)
EN 55014:1993 (148.5 kHz to 30 MHz)
6.5 Mechanical data
Protection class: IP 65
Weight: DN 10 DN 15 DN 20 DN 25 DN 32 DN 40 DN 50
0.85 0.9 0.9 2.8 2.8 3.6 3.6
Weights in kg
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6 Technical data

6.6 Electrical data
Power consumption: AC operation
Pull in DN 10 - 20 125 VA
DN 25 - 50 400 VA
Hold in DN 10 - 20 12 VA
DN 25 - 50 30 VA
DC operation
Pull in DN 10 - 20 35 W
DN 25 - 50 70 W
Hold in DN 10 - 20 7 W
DN 25 - 50 18 W
Permissible voltage toler-
ance:
±10 % to VDE 0580
Duty cycle: Continuous duty
Wiring note: Special wiring on request. When using electronic switches and additional wiring, carefully design
out any potential residual currents upon installation.
Installation note: Please note: The DC solenoid is designed for unsmoothed voltages, e.g. as obtained from a bridge
rectifier.
7 Dimensions
7.1 Actuator
C
B
F
A
Plug rotatable 90°
DN 10 DN 15 DN 20 DN 25 DN 32 DN 40 DN 50
A134 134 134 167 167 196 196
B100 100 100 128 128 157 157
C110 110 110 144 144 158 158
F52 52 52 88 88 110 110
Dimensions in mm
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7 Dimensions

7.2 Body dimensions
7.2.1 Solvent cement spigot (code 0, 30)
H1
H
L
C
ød
Connection
Code 1)
DN 15 DN 20 DN 25 DN 32 DN 40 DN 50
C16.0 19.0 22.0 26.0 31.0 39.0
ød 0 20.0 25.0 32.0 40.0 50.0 63.0
30 21.3 26.7 33.4 - - -
H50.0 50.0 72.0 72.0 85.0 85.0
H1 17.0 17.0 24.0 24.0 34.0 34.0
L124.0 144.0 154.0 174.0 194.0 224.0
Dimensions in mm
1) Connection type
Code 0: Spigot DIN
Code 30: Imperial butt weld spigot
7.2.2 Threaded socket (code 1, 31)
G 3/8
3/8"-18 NPT
70
15
30
Dimensions in mm
7.2.3 Solvent cement socket (code 2)
15
70
14
16
30
Dimensions in mm
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7 Dimensions