Electrical Connections - Bühler technologies GAS 222.20 AMEX Guía Rápida

GAS 222.20 AMEX
WARNING
Gas emanation
Sample gas can be harmful to the health!
Check the lines for leaks.
4.6.1 Connecting the Gas Line
Please note the following items when connecting the sample
gas line (NPT 1/4") on heated probes to prevent thermal
bridges:
• Choose the shortest possible screw connection.
• Shorten the connection pipe for the sample gas line as
much as possible. To do so, remove the insulation around
the sample gas line. This is done by loosening the fixing
bolts.
CAUTION
Fragile
The insulation is fragile. Handle with care, do not drop.
After connecting the sample gas line it must be braced and se-
cured with the clamp.
Long sample gas lines may require additional support clamps
along the way to the analysis system! Once all lines have been
connected and checked for leaks, carefully reinstall and secure
the insulation.
WARNING
Gas emanation
Sample gas can be harmful to the health!
Check the lines for leaks.
4.6.2 Connecting the calibrating gas line (optional)
Connecting the calibrating gas line requires a Ø6 mm or Ø1/4"
pipe fitting.
If the calibrating gas connection was ordered with check
valve, a Ø6 mm or Ø1/4" pipe can be connected directly to the
check valve.

4.7 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).
10 Bühler Technologies GmbH
The probe includes two cubic plugs per EN 175301-803 (ex
DIN43650) and a junction box. The plugs are prewired to the
junction box. For safety reasons this connection must not be
modified. The electrical connections must only be run to the
terminals of the junction box.
The power supply for the two heating cartridges (mains sup-
ply 115/230V, 50/60 Hz) and the connection for the thermal
alarm contact are provided via the terminal strip in the junc-
tion box. Per EN 60079-14 and -15, connection for the alarm
output must be connected energy-limited (U
100 mA). Please see the enclosed terminal diagram for the
connection.
• Only use cables with a temperature resistance of > 100 °C
to connect to power.
• Make sure the connecting cable has sufficient strain relief
(match cable diameter to the seal on the cubic plug).
• Please note, the heating system briefly has high starting
currents (max. 6 A). Use a suitable fuse (8 A). When con-
necting, please also observe the applicable Ex protection
regulations.
NOTICE
The thermal alarm contact must be connected energy-lim-
ited!
(U = 30 V, I = 100 mA)
max max
WARNING
High voltage
Damage to the device in case of insulation testing
Do not proceed insulation tests with high voltage to the
device as a whole!
Electric strength test
The necessary tests of all assemblies required to be tested
were carried out at the factory (test voltage 1 kV or 1.5 kV de-
pending on component).
To check the electric strength again yourself, only do so on the
respective individual components.
• Now perform the electric strength test against earth.
5 Operation and Control
NOTICE
The device must not be operated beyond its specifications.
NOTICE
The weather hood must be closed during operation!
WARNING
Housing or component damage
Never exceed the maximum working pressure and temperat-
ure range of the drive.
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.
= 30 V, I =
max max
BX460044 ◦ 01/2020