Cleaning parts

Cleaning times

Remark

1）Air filter of stop motor driver box

Once a week

2）Air filter of power supply box

Once a week

3）Frame guide rails

Once a week (before oil)

4）Needle bar case slide rails

Before oil

5）Rotary hooks

Before oil

With a brush

6）Thread take-up springs

Every day

1）Thread take-up lever gears

Once a week, No.2 white oil

2）Connecting rod and front & rear metal parts

Once a week, No.2 white oil

3）Needle bar case slide rails

Once a week, butter

Remove cover plate of needle bar case

4）Needle bar sliding parts

Once a week, No.2 white oil

Remove cover plate of needle bar case

5）Rotary hooks

1-2 times a week, No.2 white oil

Clean with a brush before oil

6）Gears for rotary hooks

Once a week, butter

Remove needle bar

7）Driving chain

 Once per 2-3 months, butter

8）Main shaft of needle bar driver

Once a week, No.2 white oil

Remove cover plate of needle bar case

Trouble Reason

Solution

Needle unstraight

To exchange new needle

Machine needle collision to the rotary hook. on lathe the shuttle position

To adjust the hooks position

needle with inferior quality

To exchange the high grade machine needle

Obtuse needle

To exchange new needle

Needle not fits for the sewing thread or embroidery materials

To exchange a suitable one

Inferior sewing thread

To exchange the high grade thread

The too thick sewing thread

To use suitable sewing thread or exchange the large size machine needle

The bending machine needle

To exchange a new needle

Rough machine needle or machine needle long trough

To exchange the high grade machine needle

The tensity of facial suture relaxes too greatly

To clamp the tension base nut

The movement of needle and rotary hook is not the same

To adjust the needle &hooks position

The needle board guide hole not be smooth

To grind the surroundings of the guide hole

Too much cementing agent when in the embroidery working

To use the suitable Cementing agent

Trouble Reason

Solution

Under – thread ‘s tensity too tight.

To adjust the under-thread’s tensity

The size of the sewing thread is not uniform

To exchange the high grade thread

The tensity of facial suture is not steady

To clear the tension base set

The tensity of under thread not steady

To clear the Bobbin set and frame

The movement of needle and rotary hook is not the same

To adjust the needle &hooks position

Insufficient lubrication on rotary hook

To add the oil on rotary hook