Checking The Temperature Of The Extrudate And The Prewarming Air; Replacing The Welding Shoe; Welding Direction - Leister FUSION 1 Mode D'emploi

5.5 Checking the temperature of the extrudate and the prewarming air

• The temperature of the extrudate and the hot air flow must be checked regularly during extended periods of
welding work:
Fast-indicating electronic temperature probes with suitable temperature sensors must be used for this purpose.
You must identify the highest temperature in the hot air flow between the nozzle outlet level and a depth of 5
mm. During extrudate measurement, the measurement sensor in the welding shoe must be inserted into the
middle of the strand.

5.6 Replacing the welding shoe

• The welding shoe must be replaced while the device is warm.
Risk of burning
Always work with temperature-resistant gloves.
Switch off the FUSION 1 while it is warm and disconnect it from the electrical line supply.
• Removal
– Remove the welding shoe (8) with the welding shoe holder (20) by detaching the clamping screws (18)
from the extruder nozzle (22).
– Every time the welding shoe is replaced, clean the extruder nozzle (22) by removing any welding residue from
it and make sure that it is screwed in tightly. Note: left-hand thread
– Remove the welding shoe (8) by detaching the fastening screws (21) from the welding shoe holder (20).
• Mounting
– Mount a welding shoe (8) that is adapted for the welding rod on the welding shoe holder (20) using fas-
tening screws (21).
– The welding shoe (8) and welding shoe holder (20) must be tightened well using the clamping screws
(18).
8

5.7 Welding direction

• Detaching the clamping screws (18) allows the
welding shoe (8) to be rotated freely to the required
welding direction.
• The clamping screws (18) must then be retightened
well again.
26
22
21
19
18
20
8 Welding shoe
18 Clamping screws
19 Prewarming nozzle
20 Welding shoe holder
21 Fastening screws
22 Extruder nozzle