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Bedienungs- und Wartungsanleitung für Handschweißextruder Serie HSK18 RSX
9. Defects and their possible reason
D
EFECTS
Machine doesn't discharge uniformly (is pumping)
mainly occurs with PP
Melt is interspersed with bubbles
Machine does not reach sufficient speed
Machine does not run smoothly
No means to regulate melt temperature
Set-point air temperature for preheating is not
reached
HSK Kunststoff Schweißtechnik GmbH
a): machine is overheated
b): screw must be cleaned
a): melt temperature is too high
b): welding wire is too old or too humid
a): melt temperature is too low
b): heater band defective
a): wear of carbon brushes
b): fluctuations on the power supply
regulator or thermocouple defective
a): cartridge heater defective
b): electronics defective
c): insufficient air quantity
Possible reasons
33
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