Bühler technologies P2.2/P2.82 AMEX Manual Del Usuario página 12

P2.x AMEX
Please note the rated current for the protective switch set-
tings (see motor type plate).
Verify the pump motor has the correct voltage and frequency:
Voltage tolerance ±5 %, frequency tolerance ±2 % - from rated
value.
Properly connect the sample gas pump per the respective wir-
ing diagram (see below). If the wiring diagram inside the
cover of the terminal box is different, observe that instead.
The terminal box has a Ø22 mm bore for installing a 1/2" NPT
cable fitting as per NEC Standard requirements. Ensure the
connecting cable has adequate cable relief.
The supply line and earthing cross-sections must be aligned
with the rated current. Use a minimum line cross-section of
2
1.5 mm .
Be sure to connect the following protective earth terminals to
your on-site earth conductor per local regulations:
• Protective earth terminal inside the motor terminal box.
• Protective earth terminal on the mounting bracket.
Stray electric currents may not flow through this connection.
No foreign objects, contaminants or moisture may be inside
the junction box.
To maintain the IP rating specified by the manufacturer,
when sealing the terminal box with the cover ensure the ori-
ginal seal is correctly seated and tighten the bolts at 1.6 -
2 Nm.
Be sure to observe any varying information in the rating plate.
The conditions at the site must correspond with all rating
plate information.
12 Bühler Technologies GmbH
5 Operation and control
NOTICE
The device must not be operated beyond its specifications.
DANGER
Danger of explosions, danger of poisoning from poison-
ous 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 operation.
b) Ensure that gases that are hazardous to health are dis-
charged safely.
c) Turn off the gas supply before beginning any mainten-
ance 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 appropriate protective equipment.
DANGER
Adiabatic compression (explosion hazard)!
In case of adiabatic compression, high gas temperatures may
occur. The operator is responsible 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 ambi-
ent conditions. Where necessary, the operator must install
temperature sensors for monitoring and must automatically
shut down the sample gas pump should the temperature ex-
ceed 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 res-
ults in an incendive electrostatic charge in the bellow / pump
body (projected surface inside the bellow / pump body ~ 15
2
cm ).
Pumps 2.8x-AMEX are suitable only to deliver non-explosive
gases.
BX420003 ◦ 08/2021