Pfeiffer Vacuum ASM 340 - Connecting the part;installation to be tested; Backing pump connection (Integrable model)

NOTICE
Risk of electromagnetic disturbance
Voltages and currents can induce a multitude of electromagnetic fields and interference signals. In-
stallations that do not comply with the EMC regulations can interfere with other equipment and the
environment in general.
►
Use shielded cables and connections for the interfaces in interference-prone environments.
Electrical safety
The leak detector is Class 1 equipment and therefore must be earthed.
►
Connect the power supply to the connector using the power cable supplied with the detector (see
chapter “Connection interface”).
►
See chapter “Technical characteristics”.
5.7 Connecting the part/installation to be tested
NOTICE
Risk of deterioration of parts or installations
There is a risk of deterioration for parts or installations connected to the leak detector vacuum circuit.
►
Make sure that the parts or installations connected to the detector’s pump inlet withstand a nega-
tive pressure of 1 · 10
3
hPa in relation to the atmospheric pressure.
●
The maximum permitted weight at the detector’s inlet must be no more than 15 kg and the maxi-
mum torque must be 10 N · m.
●
The inlet pressure must be no higher than atmospheric pressure. Pressure that is too high can
damage the product.
●
The detector's performance depends on the type of accessories used and on the quality of the
mechanical connections.
●
When assembling the vacuum circuit, use accessories to shut off the product and make mainte-
nance easier (inlet shut off valves, purge systems, etc.).
●
Comply with these recommendations to optimize measurement (see chapter “Pre-requisites for
optimizing use”).
Connection
►
Remove the blanked-off flange that covers the detector’s inlet port and save it for reuse during
storage or transport.
►
Use pipes with a diameter equal to the diameter of the detector’s inlet. The pipes should be as
short as possible and completely sealed.
►
Connect the part or the installation to be tested using the connection accessories available in the
product catalogue.
►
Connect the part or the installation to be tested using the flexible pipeworks. Never use rigid or
flexible plastic pipework (compressed air style tube).
5.8 Backing pump connection (Integrable model)
5.8.1 Backing pump characteristics
Characteristics
Backing pump Wet or Dry pump
Connection DN 25 ISO-KF
Hose with a maximum length of 2 m between the detector and the backing pump
Ultimate vacuum
< 1 hPa (5 · 10
-2
hPa recommended)
Installation
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