Munsch MEK-18-S - Malfunctions, Causes and Remedies; 7.1 Trouble-shooting; 7.2 Fault diagnosis

Hand Extruder MEK-18-S / MAK-18-S
Page 16/20 Issue 03.2011/Rev. 03 MUNSCH Kunststoff-Schweißtechnik GmbH
7 Malfunctions, Causes and Remedies
7.1 Trouble-shooting
The following table lists potential operating upsets of
the hand extruder, possible causes and their
remedies (fault diagnosis chart).
Should malfunctions occur which are not covered
here or which cannot be traced back to the cause
stated, please contact MUNSCH Kunststoff-
Schweißtechnik GmbH.
Malfunction Fault No.
Drive motor does not start 5, 8, 9, 10, 11, 14, 15, 16, 17, 18, 19, 23
Drive motor switches off 5, 8, 9, 14, 15, 16, 17, 18, 19, 23
No welding rod feed 1, 16, 17, 20
No extrudate conveyed out of welding shoe 1, 16
Extrudate output decreases during operation 1, 14, 16
No air supply 6, 7, 13
Integrated air supply without function 5, 22
No hot air 2, 3, 4, 5, 6, 18, 22
Extruder does not heat up 2, 3, 22
Temperature above preset range 2, 3, 18, 19
Controller fluctuates 3, 13,19
7.2 Fault diagnosis
Fault
No.
Possible causes Remedies
1
Smaller or too small a welding rod diameter Use larger welding rod diameter, if necessary
2
Temperature sensor defective
1)
3
Temperature controller defective
1)
4
Air rate too high Reduce air rate to specified level
3)
5
Cable connections defective Check cable connections
1)
6
External air supply not connected
3)
Connect external air supply
7
External air supply without function
3)
Switch on external air supply
Check the external air supply system for
malfunctions using the separate manual, or have it
checked.
8
Hot air temperature below start interlock
temperature
Allow hand extruder to heat up
Air rate too high → reduce air rate
3)
1) Consult MUNSCH Kunststoff-Schweißtechnik GmbH
2) Only for MAK
3) Only for MEK