Device Description - Leister 142.723 Operating Instructions Manual

Device Description

2
3
Cross-section of an overlap weld
Preparation
• Connect compressed air connection (5) to compressed air.
ATTENTION: Connection up to maximum 6 bar (80 psi). If the pressure of maximum 6 bar
(8o psi) is exceeded, a pressure-reducing valve (not in scope of supply) must be mounted
on the compressed air connection (5).
Testing
The test conditions, such as test pressure and test duration, must be adapted to the welding mate-
rial, 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 pen-
dulum-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
8
4
5
a
c
b
Fig. E
Test channel
1 Handle
2 Test needle
1
3 Guard for test needle
4 Manometer
5 Compressed air connection
a Upper membrane liner
b Lower membrane liner
c Test channel
Fig. F
Test channel
made in Switzerland
Art. no 142.475
5