Coster GCR 120 User manual

The above-said operations must be carried out only by qualied technicians.
DESCRIPTION
This solenoid valve is made to guarantee the gas interception either for gas detector signals
(methane, lpg, carbon monoxide and so on) and safety thermostats, or for an electric black out.
In order to be more reliable this solenoid valve can be reset only when electrically supplied and
only if the gas detector doesn’t send any danger signal.
Simply powering the coil does not open the valve. The reset mechanism has to be operated
by hand (see MANUAL RESET).
INSTALLATION
The solenoid valve is in conformity with the Directive 94/9/CE (said Directive ATEX 100 a) as device
of group II, category 3G and as device of group II, category 3D. For this reason it is suitable to be
installed in the zones 2 and 22 as classied in the attachment I to the Directive 99/92/EC.
To determine the qualication and the extension of the dangerous zones, see the norm EN 60079-10.
The device, if installed and serviced respecting all the conditions and the technical instructions of
this document, is not source of specic dangers: in particular, during the normal working, is not
forecast, by the solenoid valve, the emission in the atmosphere of inammable substance in way
to cause an explosive atmosphere.
WARNING: all installation/wiring/maintenance work must be carried out by skilled
staff.
• The gas supply must be shut off before installation.
• Check that the line pressure DOES NOT EXCEED the maximum pressure stated on the product
label.
• They are normally installed upstream of the regulator devices and must be installed with the
arrow (on the body of the device) facing towards the user appliance. They will function equally
effectively if installed vertical. They must not be installed upside down (with the coil underneath).
• During installation take care not to allow debris or scraps of metal to enter the device.
• If the device is threaded check that the pipeline thread is not too long; overlong threads may
damage the body of the device when screwed into place. Do not use the coil for leverage when
screwing into position; use the appropriate tool. Assemble pipe and ttings which are consistent
with solenoid valve connection threads.
• If the device is anged check that the inlet and outlet counteranges are perfectly parallel to
avoid unnecessary mechanical stresses on the body of the device. Also calculate the space
needed to t the seal. If the gap left after the seal is tted is too wide, do not try to close it by
over-tightening the device’s bolts.
• Always check that the system is gas-tight after installation.
ELECTRICAL CONNECTIONS
• Before making electrical connections, check that the mains voltage is the same as the power
supply voltage stated on the product label.
• Disconnect the power supply before wiring.
• Wire the connector with H05RN-F 3X0.75mm² cable outside Ø from 6.2 a 8.1mm, taking care to
ensure that the device has IP65 protection.
• Use cable terminals when wiring the connector (see g. 4).
• Connect the power supply to terminals 1 and 2 and the ground wire to terminal .
The coil is also suitable for permanent power supply. In case of continuous duty, it is absolutely
normal for the coil to heat up.
The coil should not be touched with bare hands after it has been continuously powered for more
than 20 minutes. Before maintenance work, wait for the coil to cool or use suitable protective
equipment.
In the case the valve is equipped with the CPI SWITCH (picture 3) make the connections
complying with the coloring wires indicated here below:
• black wire: common
• red wire: signal with the microswitch at rest (the valve is open)
• white wire: signal with pushed microswitch (the valve is closed)
it is suggested to reset and close twice/thrice the valve (removing voltage) to check the proper
CPI switch signal.
For any problems or information concerning installation/wiring/maintenance
operations, see address and telephone numbers on the back page.
EXAMPLE OF INSTALLATION
1. GCR manual reset solenoid valve
2. SM series jerk handle ON/OFF valve
3. FRG/2MC series lter pressure regulator
4. Manometer
5. Gas detector
6. Lever for remote SM ON/OFF valve control
TECHNICAL DATA
• Use : not aggressive gases of the three families (dry gases)
• Environment temperature : - 20°C + 60°C
• Max supercial temperature * : 80 °C
• Power supply voltage : 12 Vdc, 12 V/50 Hz, 24 Vdc, 24 V/50 Hz, 110 V/50-60 Hz, 230
V/50-60 Hz
• Power supply voltage tolerance : -15% ... +10%
• Power absorption : see table
• Max. working pressure : 500 mbar
• Closing time : < 1 s
• Degree of protection : IP65
• Class : A
• Group : 2
• Threaded connections Rp : (DN 15 ÷ DN 50) according to EN 10226
• Threaded connections NPT : on request
* The maximum supercial temperature is calculated powering the solenoid valve at the nominal
tension increased of 10% and at the maximum environmental temperature.
CPI SWITCH TECHNICAL DATA
• Switching voltage : max 250 V (Vac)
• Switching current : max 2 A
• Degree of protection : IP67
MANUAL RESET (see g. 1 and 2)
To reset the solenoid valve, pay attention there is tension and unscrew completely the possible
protective small cap.
Close the ow downstream the solenoid valve to grant the pressure balance between upstream and
downstream during opening.
Push the reset handgrip (6) and wait for an istant the balance between the inlet and outlet pressure
of the valve up to the hooking.
Rescrew in the original position the protective small cap and possibly seal it in that position.
SERVICING (see g. 1 and 2)
In all cases, before performing any internal checks make sure that:
1. the power supply to the device is disconnected
2. there is no pressurised gas inside the device
unscrew by a screwdriver the xing screws (9) and, with care, take the cover (2) off the body (5) of
the valve, then control the obturator and if it is necessary change the rubber made seal component
(3). Then clean or blow the lter (16) or change it if necessary; then assemble doing backward the
same operation.
pipe user
Overall dimensions in mm
Connections A B C
GCR DN 15 70 163 70
GCR DN 20 70 163 70
GCR DN 25 70 163 70
GCR DN 32 160 215 140
GCR DN 40 160 215 140
GCR DN 50 160 245 140
LOAD LOSS DIAGRAM
1) methane
2) air
3) town gas
4) lpg
Diagram calculated with P1 = 50 mbar

g. 1, 2 and 3
1. Electrical connector
2. Cover
3. Seal washer
4. Obturator
5. Body valve
6. Reset pin
7. Cover for reset pin
8. Filtering organ
9. Seal O-Ring
10. Fixing cover screws
11. Closing spring
12. Movable plunger
13. Electrical coil
14. Coil xing screw
g. 4 - abb. 4
Mod. IT/286.00
MANUAL RESET NORMALLY CLOSED
SOLENOID VALVE FOR GAS
II 3G - II 3D MADE IN ITALY
0051
GCR
EN 161 EC approved -
In conformity with Directive Gas
2009/142/EEC
g. 1 - abb. 1 GCR DN 15 - DN 20 - DN 25
g. 2 - abb. 2 GCR DN 32 - DN 40 - DN 50
Coils and connectors for GCR solenoid valve
Valve code
Connec-
tions Tension Coil + connec- tor code Coil stamping Connector type
Powwer
absorp-
tion
Standard With CPI
GCR 115 -Rp DN 15
12 V/50 Hz B13110 BO-0030
12 V DC R
12 Vac,
24 Vac
Rectier
8 VA
GCR 120 -Rp DN 20
GCR 125 -Rp DN 25
GCR 132 GCR 132C Rp DN 32
GCR 140 GCR 140C Rp DN 40
GCR 150 GCR 150C Rp DN 50
GCR 215 -Rp DN 15
12 Vdc B13060 BO-0030
12 V DC R Normal 8 VA
GCR 220 -Rp DN 20
GCR 225 -Rp DN 25
GCR 232 GCR 232C Rp DN 32
GCR 240 GCR 240C Rp DN 40
GCR 250 GCR 250C Rp DN 50
GCR 315 -Rp DN 15
24 Vdc B13111 BO-0040
24 V DC R Normal 8 VA
GCR 320 -Rp DN 20
GCR 325 -Rp DN 25
GCR 332 GCR 332C Rp DN 32
GCR 340 GCR 340C Rp DN 40
GCR 350 GCR 350C Rp DN 50
GCR 415 -Rp DN 15
24 V/50 Hz B13059 BO-0040
24 V DC R
12 Vac,
24 Vac
Rectier
8 VA
GCR 420 -Rp DN 20
GCR 425 -Rp DN 25
GCR 432 GCR 432C Rp DN 32
GCR 440 GCR 440C Rp DN 40
GCR 450 GCR 450C Rp DN 50
GCR 615 - Rp DN 15
110 V/50-60 Hz B13098 BO-0075
110 V RAC
110 Vac,
230 Vac
Rectier
8 VA
GCR 620 - Rp DN 20
GCR 625 - Rp DN 25
GCR 632 GCR 632C Rp DN 32
GCR 640 GCR 640C Rp DN 40
GCR 650 GCR 650C Rp DN 50
GCR 815 - Rp DN 15
230 V/50-60 Hz B13058 BO-0050
220 V RAC
110 Vac,
230 Vac
Rectier
9 VA
GCR 820 - Rp DN 20
GCR 825 - Rp DN 25
GCR 832 GCR 832C Rp DN 32
GCR 840 GCR 840C Rp DN 40
GCR 850 GCR 850C Rp DN 50
g. 3 - abb. 3 GCR DN 32 - DN 40 - DN 50 With CPI
COSTER TECNOLOGIE ELETTRONICHE S.p.A.
Via San G.B. De La Salle, 4/a
20132 MILANO
tel [phone]
www.coster.eu
COSTER T.E. UK BRANCH
5 Shaftesbury Street South Tel. [phone]
Sir Francis Ley Industrial Park Fax [phone]
Derby DE23 8YH England
E-mail: [email protected]
COSTER TECNOLOGIE ELETTRONICHE S.p.A.
E-mail: [email protected] Web: www.coster.eu
Head Ofce & Sales
Via San G.B. De La Salle, 4/a Tel. [phone]
20132 - Milano Fax [phone]
COSTER
26 7 378800
800
Numero Verde
INFORMAZIONI TECNICHE