Weh TW01 - Page 21

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Ensure that a controllable pneumatic source is available for the actuation in order to
maximize the service life of the front seal (Pos. 7) and to achieve an optimum seal-
ing for the application. The pilot pressure should be optimized to ensure a sealing at
the test piece, but without over-compressing the front seal. Excessive pilot pressure
can reduce the service life of the front seal.
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Always secure the WEH
®
Connector with a suitable fixturing device before adding
the test pressure.
Note: With vacuum application, a fixturing device can be dispensed with.
8�2 Connection
Connection of a TW01 connector / TW01 double
connector for non-threaded application
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Be careful to place the connector straight into the test
piece (Figure 1). The front seal (Pos. 7) must no longer be
visible (Figure 2 and Figure 3). Doing so will prevent any
damage to the front seal caused by any sharp edges on
the test piece and ensure a correct connection.
Note: Ensure that the connector is securely plugged into
the test piece using a mechanical connection before
proceeding.
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Apply pilot pressure to the connector. The elastic front seals
(Pos. 7) are compressed and the connector creates a pres-
sure-tight connection.
Note: Regulate the pilot pressure to the minimum required
for sealing under test conditions (pressure or vacuum). This
extends the service life of the seals.
- The connector is now connected pressure-tight to the test
piece.
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To start the testing procedure, apply pressure to media
inlet ‘B1’.
Figure 1
Figure 2
Figure 3
MD-10187-L51-R1.3.0-03
Page 21
Operating instructions
AE