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BA_170-22D_A14_180704_en
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Unintended skip stitching
Possible reasons:
-
wrong looper setting
-
wrong setting of loop stroke/needle stroke, therefore insufficient loop
formation (small/big)
-
chaining finger damaged or not correctly set
-
wrong setting of cloth retainer or cloth retainer pressure
Solutions:
-
operate machine manually, check the looper motion
-
check the settings, re-set, if necessary, replace damaged parts
-
change thread feed through thread take-up, if necessary
•
Machine does not start, although the control lamp at the main switch
lights
Possible reasons:
-
thread trimmer not in final position, microswitch locks
-
control error
-
mechanical damage, machine blocks
Solutions:
-
switch machine off and on again, check the knives' cutting position,
check the programming
-
eliminate mechanical problem, call service, if necessary
•
The fabric is marked or damaged
Possible reasons:
-
unsuitable feed dog teeth
-
plunger shape unsuitable for the fabric to be sewn
-
pressure of cloth retainer too high
-
wrong setting of feed plates pressure
-
damaged sewing tools (lower side of needle plate)
-
unsuitable needle or thread size
Solutions:
-
replace feed dog or plunger (see “7 Variable sewing tools”)
-
check pressures, sewing tools and their functions, replace or repolish
damaged parts
-
choose most suitable needles and threads
Summary of Contents for 170-22D
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