|
PROBLEM |
POSSIBLE CAUSES |
SOLUTIONS |
|
Needles |
Needle is bent or damaged |
Replace needle. |
|
Incorrect needle for the thread size being used |
Replace with a compatible needle |
|
|
Needle is installed incorrectly |
Install needle correctly (see operator manual) |
|
|
Needle Depth |
Needle bar lowest dead point is incorrect |
|
|
Rotary Hook |
Hook timing is incorrect |
|
|
Hook point is dull |
||
|
Upper/Bobbin Tension |
Bobbin thread does not feed out smoothly |
Replace the bobbin and/or bobbin case |
|
Upper thread does not feed out smoothly |
Check the condition of the thread feeder roller. If it is bad, replace it. Adjust the thread feed parameters in the AMAYA OS software. If that does not solve the problem, replace the optical sensor switch assembly. |
|
|
Presser Foot |
A week or broken presser foot prevents the needle from coming out of the fabric smoothly |
|
|
Thread |
Thread twist is too tight |
Use the appropriate thread or consult Melco Technical Support for suggestions |
|
Thread is too elastic to form an adequate loop |
