Bühler technologies GAS 222.35-U Ex1 Guía Rápida página 15

GAS 222.35-U Ex1
DANGER
Adiabatic compression during gas blowback (explosion
hazard)!
Adiabatic compression may cause high gas temperatures and
must be checked by the user.
Gas blowback may result in high gas temperatures due to
adiabatic compression. This can cause flammable gases to ig-
nite spontaneously.
a) Blowback of explosive atmosphere / gases is prohibited.
b) Flammable atmosphere / gases (non-explosive) may only
be blown back with nitrogen (inert gas).
4.6 Electrical Connections
WARNING
Hazardous electrical voltage
The device must be installed by trained staff only.
CAUTION
Wrong mains voltage
Wrong mains voltage may damage the device.
Regard the correct mains voltage as given on the type plate.
CAUTION
Equipment damage
Cables damaged
Do not damage the cable during installation. Install a strain
relief for the cable connection. Secure the cable against twist-
ing and loosening. Please note the temperature resistance of
the cables (> 100 °C/212 °F).
Only use cables with a temperature resistance of > 100 °C
(212 °F) to connect to power. Make sure the connecting cable
has sufficient strain relief (match cable diameter to the seal
on the cable fitting).
4.6.1 Connecting the Earth Conductor/Earthing
Always connect all of the designated connections on your unit
to your protective conductor system. Connect the earth to the
additional equipotential bonding conductor connection on
the housing.
4.6.2 Solenoid Valves (Optional)
DANGER
Explosion hazard when opening the solenoid valve
housing
The solenoid valve is a closed system. It must not be removed!
A fuse suitable for the rated current (max. 3 x Ib per
IEC 60127-2-1) or a protective motor switch with short circuit
and fast thermal response (set for rated current) must be con-
nected upstream from each magnet to prevent short-circuits.
• For magnets with a very low rated current, a fuse of the
lowest current value under the IEC standard will suffice.
This fuse must be connected separately, upstream.
BX460075 ◦ 04/2023
• The rated fuse voltage must be equal to or greater than
the specified nominal voltage (U
The fuse rating is specified in the type plate of the solen-
oid valve.
• The limiting breaking capacity of the fuse element must
be equivalent to or greater than the maximum short-cir-
cuit current expected at the installation site (typically
1500 A).
DANGER
Potential equalization/static charge
Static charges can result in incendive sparking.
Avoid static charges. All conductive probe parts must be
earthed!
The housing has a connection for an earth/equipotential
bonding conductor. Ensure the housing is adequately earthed
(minimum conductor cross-section 4 mm
Particularly also observe the requirements of IEC/EN
60079-14!
5 Operation and Control
NOTICE
The device must not be operated beyond its specifications.
NOTICE
The weather hood must be closed during operation!
DANGER
Explosion hazard due to electrostatic discharge
Equipment may only be used where normal operating condi-
tions do not produce frequent flammable, electrostatic dis-
charge.
5.1 Before Startup
Before starting the device, verify:
• The hose- and electrical connections are not damaged
and correct installed.
• No parts of the gas probe have been removed.
• The protection and monitoring devices are installed and
functional (e.g. flame arrester).
• The gas inlet and outlet on the gas probe are open.
• Ambient parameters are met.
• Probe parts are resistant to media to be conveyed and in
the surrounding area.
• The electrical connections are tight.
• The monitoring equipment is connected and set as spe-
cified.
• Precautions have been taken.
• The earth is proper and functional.
• The outlet filter and the handle with O-ring are installed
(if applicable).
+10 %) of the magnet.
N
2
).
Bühler Technologies GmbH 15