78
PFM-4000
Part Number 6Z8303
Troubleshooting
Mechanical Problems
The following table contains a listing of mechanical problems together with
possible causes and solutions:
Table 9.3
Mechanical Problems
Problem
Cause
Solution
Needle bar does
not move.
Problem with power
connections.
Check the motor connection to the
electrical supply.
Sluggish or noisy
machine.
Dirty machine.
Machine is
underlubricated or
not lubricated at all.
Clean all dust, lint, and debris from
machine, especially the feed and in the
looper area.
Check lubrication points. Use correct oil.
Waste remover
system does not
work when
machine is
turned on.
Poor electrical
connection.
Waste tubes blocked.
Check connection.
Unblock the tubes.
Flange cutter
does not operate,
or operates
poorly.
No air pressure.
Kinked air lines.
Dull or improperly
set knives.
Check for pressure.
Check lines.
Sharpen or reset knives.
No action when
cutter pedal is
pressed.
No air pressure
Kinked lines.
Check air pressure.
Check lines.
Power is ON;
sewing head
does not move.
Loose belt.
Machine is
obstructed.
Needle positioner is
set incorrectly.
Tighten belt.
Check for obstructions.
Set with the needles in downward
motion.
Material is not
trimmed as the
operator sews.
Dull knives.
Knives set
improperly.
Sharpen or replace the knives.
Reset the knives.
Needle bars are
damaged.
Improper lubrication.
Foreign object in
contact with needle
bars.
Material becomes
obstructed.
Dull cutting knives.
Knives set
improperly.
Check lubrication; lubricate daily.
Check for foreign objects.
Check for cause of obstruction.
Sharpen or replace the knives.
Reset the knives.
