Device Description - Leister 142.723 Instrucciones De Funcionamiento

Device Description

2
3
Cross-section of an overlap weld
Preparation
• Compressed air switch (5) must be at OFF position (Figure A).
• Connect compressed air connection (6) to compressed air (Figure C).
ATTENTION: Connection up to maximum 6 bar. If the pressure of maximum 6 bar is exceeded, a pressure-
reducing valve (not in scope of supply) must be mounted on the compressed air connection (6).
OFF
5
Fig. A
Testing
The test conditions, such as test pressure and test duration, must be adapted to the welding material,
welding material thickness, test channel dimensions and temperature.
• Place the compressed air tester with test needle at the end of the test channel as follows:
– Heat the point to be tested on the test channel of the weld seam using a Leister hot air blower with pendulum-
like movements (Figure D).
– Hold the compressed air tester at the handle (1) and place the guard for the test needle (3) onto the
heated point (Figure E).
– Guide the test needle (2) approx. 2 cm into the test channel (Figure F) by applying slight pressure at the
handle (1).
Fig. D
Test channel
4
5
6
a
c
OFF 5
6
Fig. C
Fig. E
Test channel
1 Handle
2 Test needle
1
3 Guard for test needle
4 Manometer
5 ON /OFF compressed air switch
6 Compressed air connection
a Upper membrane liner
b Lower membrane liner
b
c Test channel
Fig. F
Test channel
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