Leister WELDPLAST S4 Instructions D'utilisation page 28

Pre-heating nozzles
• There are three different pre-heating nozzles (9)
available according to the required welding seam
width. The nozzle cross-sections comply with DVS
guidelines.
Replacing the pre-heating nozzles
Danger – can cause burns !
• To disassemble the pre-heating nozzle (9), loosen the clamping screw (43)
on the side and pull the pre-heating nozzle (9) off the hot-air tube (44). To
ensure no pre-heated air is lost, the nozzle is pushed on the hot-air tube (44)
as far as it goes. Take care that the pre-heating nozzle (9) is parallel to the
nozzle shoe (8).
Replacing the hot-air tube
Danger – can cause burns !
• To disassemble the hot-air tube (44), firstly remove the welding
shoe (8). After loosening the countersunk locating screw (45)
on the tube clamp (10) and the clamping screw (47) on the
hot-air tube connector, the complete unit can be removed.
• Assembly in the reverse sequence.
• Do ensure no pre-heated air is lost when reassembling, the unit
must be pushed on the hot-air blower (16) as far as possible.
28
Nozzle 1 Nozzle 2
Seam widht Seam widht
up to 15 mm 16 to 20 mm
Only work with heat-resistant gloves.
Only work with heat-resistant gloves.
45
Nozzle 3
Seam widht
21 to 40 mm
44
43
9
8
16
47
44
10
8