Leister WELDPLAST S4 Instructions D'utilisation page 22

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Welding preparation
Setting the welding output
• A variable welding output allows seam thickness and pre-heating times to be
coordinated.
• Presetting on the display
– Move the cursor to the «SPEED» position by pressing the Select key (28).
– Specify the maximum output value (30-100 %) using the Up (29) or
Down (27) keys (displayed on the drive display bars (22)).
Setting the PLAST and AIR temperatures
• Move the cursor to the «PLAST» or «AIR» position by pressing the Select
key (28).
• Set the temperature value by using the Up (29) or Down (27) key.
Fine tuning during the welding proces
• By turning the potentiometer (3), the welding output set can
be reduced from the maximum value (e.g. 85) to the minimum
(displayed on the (22) display bars).
• The plastizised material throughput is also dependent on the
welding rod thickness used. If the welding output is too high
with the output display "30" and the potentiometer is set to
"minimum", the next smallest welding rod thickness must be
selected.
Monitoring the welding parameters
• The actual and ideal values of the AIR and PLAST temperatures are constantly monitored. If an actual value deviates
from the relevant ideal value (value is outside the range of tolerance), this will be indicated by a change in status
on the status display (30). If necessary, the drive motor will be temporarily disabled until the welding parameters
are back in the specified tolerance range. The possible status display and the ranges of tolerance are shown in
the following graphic and table.
Motor
enabled
No
Status display
1
Ready*
2
M free
Heating
3
30s
4
Too hot
5
22
Motor
ena.
enabled
Status characteristics
Ready to weld
Divergence from welding parameters (plastics) > 10°C
Divergence from welding parameters (plastics) > – 30°C, drive motor disabled
Start-up waiting period of 30 sec., drive motor disabled
Divergence from welding parameters (plastics) > + 30°C, drive motor disabled
Reference value
Actual value
Motor
Displayed state
Time
27
28
29
3
22
30
22

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