Weh TW01 - Page 23

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Installation of connector with pneumatic coupling (Pos� 4) and control - / bleeding

valve (Pos� 3)

Insert the connector, according to the design, into the test piece as described on

Page 19 and Page 20.

Note: Ensure that the connector is securely plugged into the test piece using a

mechanical connection before proceeding.

Plug the pneumatic coupling (Pos. 4) onto the control - /

bleeding valve (Pos. 3) and keep the coupling plugged in

(Figure 5). When the pneumatic coupling is plugged in, a

short pressure pulse is applied to the control - / bleeding

valve. The elastic front seals (Pos. 7) or main seals (Pos. 8)

are compressed and the connector creates a pressure-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.

Pull off the pneumatic coupling (Pos. 4) again. The integrated shut-off valve in the

pneumatic coupling prevents pilot pressure air from escaping.

The check valve in the control - / bleeding valve (Pos. 3) locks the pilot pressure in the

connector and the connector remains adapted.

- The connector is now connected pressure-tight to the test piece.

To start the testing procedure, apply pressure to media inlet ‘B1’.

Figure 5

Pneumatic coupling

MD-10187-L51-R1.3.0-03

Page 23

Operating instructions