Switching On The Sample Gas Pump; Operating The Sample Gas Pump - Bühler technologies P4.3 Guía Rápida

P4.3, P4.83
CAUTION
Hot surface
Burning hazard
According to the product type and operation conditions, the
temperature of the housing may exceed 50 °C during opera-
tion.
Depending on the conditions at the installation site it may
be necessary to provide these areas with appropriate warn-
ing signs.
DANGER
Toxic, corrosive gases
The measuring gas led through the equipment can be haz-
ardous when breathing or touching it.
a) Check tightness of the measuring system before putting
it into operation.
b) Take care that harmful gases are exhausted to a save
place.
c) Before maintenance turn off the gas supply and make
sure that it cannot be turned on unintentionally.
d) Protect yourself during maintenance against toxic / cor-
rosive gases. Use suitable protective equipment.

5.1 Switching on the sample gas pump

Before switching on the device, ensure that:
• the hose and electrical connections are undamaged and
correctly installed,
• no parts of the sample gas pump have been dismantled
(e.g. cover),
• the gas inlet and outlet of the sample gas pump is not
shut,
• the preliminary pressure is under 0.5 bar,
• in the event of throttling under 150 l/h (per head in the
P4.3) or under 400 l/h (per head in the P4.83) in continu-
ous operation, a bypass is available,
• the ambient parameters are complied with,
• information from the identification plate is complied
with,
• the voltage and frequency of the motor correspond to
those of the network,
• the electrical connections are fastened tightly and the
monitoring devices have been connected and set cor-
rectly,
• the air inlet openings and cooling surfaces are clean,
• protective measures have been carried out; earthing!
• the motor is secured correctly,
• the terminal box cover is closed and the cable entry
points have been properly sealed.
When switching the sample gas pump on make sure that
• no abnormal sounds or vibrations occur.
• the flow rate is neither too low nor too high. This would
indicate a cracked bellow.
BX420010 ◦ 08/2018

5.2 Operating the sample gas pump

The sample gas pump is intended exclusively for the pump-
ing of gaseous media. It is not suitable for liquids.
The sample gas pump should be operated without pre-com-
pression. A preliminary pressure of more than 0.5 bar is not
permitted. The gas outlet must not be shut. The flow rate per
pump head must be at least 50 l/h for the P4.3 and at least
200 l/h for the P4.83 pumps. In the event of throttling under
150 l/h for the P4.3 or under 400 l/h for the P4.83 pumps in
continuous operation, the flow rate must be regulated via a
bypass. In this case you should choose a version with bypass
valve.
NOTICE
Extreme throttling reduces the life time of the bellow.
The output can be adjusted on pumps with built-in bypass
valve. Do not apply a lot of force when turning the valve as
the valve could otherwise be damaged! The rotation range of
the valve is about 7 rotations.
6 Maintenance
Always observe the applicable safety- and operating regula-
tions when performing any type of maintenance. Please refer
to the original operator's manual on the included CD or on-
line at www.buehler-technologies.com for maintenance in-
formation.
7 Service and Repair
Please refer to the original operator's manual on the included
CD or online at www.buehler-technologies.com for a detailed
description of the unit including information on
troubleshooting and repair.
Bühler Technologies GmbH 9