Leister WELDMAX Manual De Instrucciones página 15

Operating faults and preventative measures
• Welding rod obstruction
– Should the welding rod outside the tool get obstructed, the rod feed will skid to
prevent tool damage.
– Safeguard the welding rod feed, check welding rod tolerance.
– Start up the tool using the rod feed switch (14).
– Push-feed the welding rod only by hand into the welding rod feed (15).
– Welding rod residue will escape via the discharge aperture (16).
– CAUTION do not use any tools or other objects to remove welding rod residue.
• In case the welding rod cannot be fed through, the welding rod can be removed
backwards out of the tool.
– Switch off the rod feed by the rod feed switch (14).
– Set the potentiometer air temperature (22) and potentiometer extrudate tem-
perature (19) to the set value OFF position.
– After approx. 2 seconds activate the rod feed switch (14), the machine will start
in reverse (fixed speed).
– The welding rod can be removed by pulling on the protruding welding rod.
– Switch off the rod feed by pressing the rod feed switch (14).
– Set the potentiometer air temperature (22) and potentiometer extrudate tem-
perature (19) to adjust SET value.
– Feed new welding rod and press rod feed switch (14).
Caution: cut off the used welding rod.
– Feed in the new rod by using a low rod feed speed.
– As soon as the plastizised material starts to protrude from the welding shoe (1),
the tool will be operational again.
• Fault indication on the digital display
– Should a fault occur during the operation of the tool , this will be indicated on the
display.
– Send the tool to the nearest Service Centre, indicating the fault code.
ERR will appear on the Digital display ACTUAL value extrudate temperature (17)
and Digital display ACTUAL value air temperature (20)
The following messages will appear on the Digital display SET value air
temperature (21)
LO No fault in the automatic air control.
L1 Interruption of the temperature probe or air temperature too high
L2 Faulty air heater or the air temperature probe has a short circuit
L3 Element overheated, photoresistor has responded
L6 Electronics over-heated.
The following messages will appear on the digital display SET value
extrudate temperature (18)
PO No fault in the automatic extrudate unit
P1 Interruption of temperature probe or extrudate heater over-heated
Faulty extrudate heater or the temperature probe of the
P2
extrudate heater has a short circuit
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