SUNWING INDUSTRIAL CO., LTD.

Computerized embroidery machines are a kind of high-speed running machines, and in most of the embroidery factories, they are running machines 24 hours per day and 7 days per week, in this case, the maintenance of machines is very important to keep the machines with good condition, herein, we would like to share our experience of our machines maintenance with you as followings, hope that it will take some help to you.

Tips for Daily Cleaning

Tips For Daily Maintenance

Tips for Easy-Seen Problems (Mechanical)

Problems

Possible Causes

Solutions

Design Positioning Problem or Design Distorted

Machine does not stop at 100 degree

Adjust to 100 degree

Frame Limit

Reset the Frame limit

Mechanical Breakage

Release the breakage

Main Shaft Motor is switches off

Switch it on

Fuse Burned

Replace

Design Positioning Problem and Design Distorted

The Frame is too heavy

Reduce the weight

The timing belts are too loose or too tight

Adjust the tension

Rail friction too much or rail stuck

Clean the rails and add grease 

Connection between Driver shaft and belts too loose

Check and tighten the screws

Shaft Bearing worn out

Replace

Fabric too loose on the frame

Adjust the fabric tension

Thread Break Detecting Error (Including No Detecting and Detecting Error)

Thread tension too loose or too tight

Adjust the tension

The Take-up Spring has a poor contact with the Detecting Contact Point

Adjust the position of them and clean the Detecting Contact Point

Thread take-up springs and copper poles don't contact well; Loose thread take-up springs cause no detecting, tight thread take-up springs cause detecting errors or thread breakage

Adjust the position of the springs: rotate the spring counterclockwise so that it does not contact the copper pole, then rotate it back (clockwise) till it meets the copper pole, and then rotate it 15 degree further (clockwise)

Color Change Error (Including Change Error and No Change)

Machine didn't stop at 100 degree

Adjust to 100 degree

There is no Needle Position Signal

Adjust to the right position with the two indicators light

Position of Color Change Cam changed

Diminish the clearance along the shaft, tighten the screws

Position of Thread Take-up Lever changed

Check if the Take-up Level Drive Gear is loose or worn. Adjust its position

Position of Needle Bar Case changed

Check if the needle points to the Needle Plate Hole

Position of Needle Bar Reciprocator changed

Check the position of the Needle Bar Reciprocator and the Needle Bar

Needle Break

Phase position of Lower Shaft is not right, the needle sticks to Rotary Hook or Bobbin Case

Check if the Rotary Hook is loose when the phase is 196 degree

Position of the Cam changed

Check and adjust the position of the Cam

Needle quality poor

Replace for better quality needle

Movable knife does not get back to position

Check trim component, reposition moveable knife

Start the machine when pulling the thread

Change this habit

Jump Stitches (Lose Stitches)

Needle quality poor

Replace for better quality needle

Needle size is not suitable for the thread

Replace needle or thread

Position of needle point and the Rotary Hook point changed

Check and adjust parameter of 196 degree

Height of the Needle Bar is changed

Check and adjust parameter of 172 degree

Surface and under thread tension not good

Adjust the tension, clean Bobbin Case

Fabric is not tighten to the frame properly

Tighten the fabric

Trim Solenoid does not jump back

Adjust

Jump Spring is not working

Replace

Thread quality poor

Replace

Needle Bar Drop when the Machine Stops)

The Jump Solenoid does not work

Check the wires, sockets and if it is not workable

Position of Jump Solenoid changed

Check if it is loose, adjust its position

Position of Needle Bar Connecting Stud changed

Check if the Stopper distorted, if position of Needle Bar Connecting Stud changed or distorted

Position Needle Bar Reciprocator changed or blocked

Find the blockage and adjust the position, replace

Needle Bar does not Embroider

Position of Upper Dead Point Stopper low

Position of Upper Dead Point Stopper low

Needle Bar Reciprocator does not get back when rotating to right

Check if it is because of mechanic blockage or Jump Spring not working

Thread Split

Thread quality poor

Replace

Needle Bar is too high

Adjust it at 173 degree

Holes in the thread way is not smooth

Check the holes and polish them

Trim at the Wrong Position

Connecting Stud and Thread Trimming Shaft loose

Tighten

Position of Cam in Cam Driver changed

Adjust

Trimming Position of Movable knife is low

Adjust

Position of Thread Trimming Solenoid changed, Cam cannot rise to position

Adjust

No Trimming

Movable and Fixed Knife do not work well together

Adjust the angle of fixed knife

Position of the Movable Knife is changed

Adjust

Movable and Fixed Knives are not sharp

Replace

Trimming Position of Movable Knife changed

Check the Open position at 290 degree and the Close position at 100 degree

size="2"Position of Wide Picker is changed

Adjust

Movable Knife and Knife Drive Shaft loose

Tighten

Trim length Short

size="2"Tension of under thread changed

Adjust the tension

Bobbin Case distorted

Replace

Position of Under thread presser changed

Adjust

Under thread presser distorted

Replace

Parameter setup changed in the computer

Reset parameters of Trim Length

Poor Thread Hooking

Position of Movable & Fixed Knives changed

Adjust the position of Movable Knife

Position of Wide Picker changed

Adjust the angle

Poor Picking

Upper Thread Holder Set locked

Unlock it

Thread Presser Base and Lid loose

Adjust and tighten

Position of Upper Thread Holder changed, it can not hook the thread

Adjust

Upper Thread Holder Solenoid not working

Replace