P2.x AMEX
5 Operation and control
NOTICE
The device must not be operated beyond its specifications.
DANGER
Danger of explosions, danger of poisoning from poisonous corrosive gases
During maintenance work, depending on the medium used, explosive and/or poisonous
corrosive gases could escape, and this could lead to a danger of explosion or could be
hazardous to health.
a) Inspect the leak tightness of your sampling system before putting the device into op-
eration.
b) Ensure that gases that are hazardous to health are discharged safely.
c) Turn off the gas supply before beginning any maintenance or repair work and flush
the gas lines with inert gas or air. Secure the gas supply so that it cannot be turned on
unintentionally.
d) Protect yourself during maintenance from poisonous / corrosive gases. Wear appro-
priate protective equipment.
DANGER
Adiabatic compression (explosion hazard)!
In case of adiabatic compression, high gas temperatures may occur. The operator is re-
sponsible to consider this situation.
Make sure to obey the allowed technical specifications and ambient conditions (see data
sheet), take special attention to the media temperature with respect to temperature
class T3 or T3C. These vary in addition to gas composition and ambient conditions. Where
necessary, the operator must install temperature sensors for monitoring and must auto-
matically shut down the sample gas pump should the temperature exceed the limits.
DANGER
Dangerous electrostatic charging (explosion hazard)
Conveying e.g. very dry and particle-laden gasses may result in incendive electrostatic
charges inside the bellow / pump body.
Please install a particle-filter with suitable grade of filtration before the gas input of the
pump.
Removing explosive gaseous mediums (max. from zone 1) with pump P2.2.-P2.4-AMEX is
prohibited if the gas flow results in an incendive electrostatic charge in the bellow /
pump body (projected surface inside the bellow / pump body ~ 15 cm
2
).
Pumps 2.8x-AMEX are suitable only to deliver non-explosive gases.
CAUTION
Hot surface
Burning hazard
According to the product type and operation conditions, the temperature of the housing
may exceed 50 °C during operation.
Depending on the conditions at the installation site it may be necessary to provide these
areas with appropriate warning signs.
15
Bühler Technologies GmbH
BE420003 ◦ 08/2021
