Electrical Connections - Bühler technologies P4.3 Notice De Montage

P4.3, P4.83
4.2 Mounting
CAUTION
Damage to the device
Protect the device, especially the gas inlets and tubes, against
dust, falling parts and external impact.
When installing the P4 on mounting plates, use the included
mounting bracket and only the included rubber/metal bump-
ers. Operation without rubber/metal bumpers is prohibited.
These must also be used when installing the pump on an ex-
isting substructure. For the hole pattern in the mounting
bracket and the motor foot, please refer to the Technical Data
at the end of the operating and installation instructions.
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-
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.
BX420010 ◦ 04/2022

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 circuit breaker (according to IEC 60947-1 and IEC
60947-3) must be installed for the sample gas pump. It must
be easy for the operator to reach. The switch must be marked
as a cut-off for the device. It mustn't be integrated into a sup-
ply cable or interrupt the earth conductor. It must further sep-
arate all poles of the sample gas pump from live parts.
The sample gas pump must be protected against prohibited
heating with suitable overload protection (protective motor
switch).
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 ±1 % - 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 required tightening torque for the nuts on the terminal
board is 1.5 Nm.
Ensure the connecting cable has adequate cable relief. The
clamping area of the cable gland is 6-10 mm. The required
tightening torque for the cable gland is 5 Nm.
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. Any unused cable gland openings must be
sealed with plugs approved for the application (if necessary
Atex, IECEx).
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 appropriately tighten the
bolts.
Be sure to observe any varying information in the rating plate.
The conditions at the site must correspond with all rating
plate information.
Bühler Technologies GmbH 9