Special Condition Moist Sample Gas; Electrical Connections - Bühler technologies P4.3 Guía Rápida

P4.3, P4.83
• adequate protection from the weather
• Adjusting the maintenance intervals (e.g. cleaning and re-
placing wear parts)
Use suitable measures and regular inspections to prevent
damage to the equipment from e.g.:
• Corrosion
• Sunlight (temperature peaks and damage from
UV rays)
• Moisture from condensation (e.g. due to rapid temperat-
ure changes or downtimes)
• Icing
• Insects and microbes
• other animals, e.g. martens, etc.
Please remember that all technical operating parameters of
the equipment must also be met with outdoor installation.
Specifically:
• Maximum or minimum operating temperatures
• Degree of protection
4.2 Mounting
For installing the pumps at back plates use the support con-
sole and the rubber-metal buffers. The buffers also have to be
used when the pump is mounted on an existing base plate.

4.3 Special condition moist sample gas

Applications where the sample gas is still moist may result in
condensate forming in line and the pump body. In these
events the pump head must be suspended (pump body facing
down).
If the pump was not ordered this way, it can easily be conver-
ted on site.
Install the line between the gas output and condensate drain
with a grade so the condensate can drain and does not collect
inside the pump or the lines.
4.4 Connecting the gas lines
The pumps are delivered with customized gas connections.
Please compare the part-no. on the type plate with the part-
no. explained in chapter "Introduction".
Avoid mixed installations, that is connecting metal tubes to
plastic bodies. If this is unavoidable for sporadic applications,
screw the metal fitting with utmost care and without any use
of force to the PTFE pump body.
Install the tubes in a way that the line at the inlet and outlet is
flexible over a sufficient distance (pump vibrates).
Individual operation
If the pumps are used in individual operation, the gas feed
paths are to be connected to the corresponding pump head.
The inlets are labelled with "In" (inlet), the outlets with
"Out" (outlet). Ensure that the connections with the gas
pipelines are airtight.
Parallel operation (P4.83 only)
In parallel operation, the pump heads are connected with the
help of the connection set. In doing so, the outlets and inlets
of each pump head are to be connected to each other. The in-
lets are labelled with "In" (inlet), the outlets with "Out" (out-
8 Bühler Technologies GmbH
let). The gas path is connected to the corresponding T-pipe of
the connection set. The union nut for the securing of the con-
nection set is a component part of the pump.

4.5 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.
A switch or power switch (according to IEC 60947-1 and IEC
60947-3) must be installed for the sample gas pump. It must
be easily accessible by the user. The switch must be marked as
circuit breaker for the device. It must not be installed in the
mains power cord and must not interrupt the protective earth
conductor. Furthermore, it must disconnect the device from
all poles.
The sample gas pump must be secured against unacceptable
excessive warming by using a suitable overload protection
(motor protection circuit breaker).
Observe the rated current for the setting of the circuit breaker
(see the motor identification plate).
Attach the pump in accordance with the circuit diagram on
the terminal box housing cover and ensure that the strain re-
lief for the connection line is sufficient. When doing this, en-
sure that the pump motor has the correct voltage and fre-
quency (voltage tolerance ± 5 % and frequency tolerance ± 2%).
The supply line and earthing cross sections must be adapted
to the rated current.
Use at least a wire cross-section of 1.5mm
Connect the circuit breaker of the motor to the local protective
conductor.
Connect the protective conductor in accordance with DIN VDE
0100 without fail to the marked protective conductor ter-
minal.
There must be no foreign objects, dirt or humidity in the ter-
minal box. Close unneeded cable inlet openings and seal the
box itself against water and dust. Use the original seal when
closing the terminal box.
Unused openings must be closed with approved stoppers.
Observe without fail any different information on the identi-
fication plate. The conditions at the operation site must cor-
respond to all the ratings plate information.
5 Operation and control
NOTICE
The device must not be operated beyond its specifications.
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BX420010 ◦ 08/2018