Bühler technologies P1.1 Notice De Montage page 9

P1.1, P1.1E
5 Operation and control
NOTICE
The device must not be operated beyond its specifications.
CAUTION
Hot surface
Burning hazard
According to the product type and operation conditions, the
temperature 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.
DANGER
Toxic, corrosive gases
The measuring gas led through the equipment can be hazard-
ous 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 unit, check:
• the hose- and electrical connections are not damaged and
correct installed.
• no parts of the sample gas pump have been removed (e.g.
cover).
• the gas inlet and outlet of the sample gas pump are not
closed.
• the pre-pressure is below 0.3 bar.
• a bypass is installed for continuous operation for throt-
tling below 150 L/h
• ambient parameters are met.
• data on the rating plate is met.
• the voltage and frequency of the motor match the mains
values.
• electrical connections are securely connected and monit-
oring devices are connected and set as prescribed.
• air inlets and cooling surfaces are clean.
• ventilation slots in the housing cover are not covered or
dirty, but are freely accessible.
• precautions have been taken; earthing!
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.
BX420020 ◦ 03/2020
5.2 Operating the sample gas pump
CAUTION
Risk of injury by moving parts
The device may be damaged if it falls down of by impacts. Pay
attention to any accessible moving parts.
Operation without cover or with damaged cover is not al-
lowed!
The sample gas pump is suitable for delivering gases only. It is
not suitable for liquids.
The sample gas pump should be operated without pressure. A
system pressure above 0.3 is not allowed. The gas outlet must
not be closed. The flow rate must be at least 50 l/h (150 l/h
with system pressure 0.3 bar). If the flow rate continuously is
throttled below 150 l/h during operation, the flow rate must
be controlled with a bypass valve.
NOTICE
Extreme throttling reduces the life time of the bellow.
If the pump is equipped with a bypass valve, the flow rate can
be adjusted. Do not apply force when turning the valve, be-
cause the valve may be damaged otherwise! The turning
range of the valve is about 5 turns.
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 online
at www.buehler-technologies.com for maintenance informa-
tion.
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