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5. Environment Requirements
1. Keep the motor and control box away from high magnetic field environments and radiation
environments to avoid malfunction.
2. The work environment temperature must be in the range of 5 – 45 °C.
3. Don’t use this product next to heat sources (such as radiator).
4. Don’t use this product in a too humid environment.
5. Don’t use this product near to corrosive liquids and explosive substances.
6. Always keep ventilation for the control box and motor to ensure good heat output.
7. Keep the power input voltage stable.
8. Make sure there is a reliable earthing device for the system.
6. Troubleshooting
If the machine can not work very well, maintenance and repair must be operated by
professionally trained personal.
Fault 1:
The display does not light up when the power is turned ON.
Check if the power plug is connected to the socket properly.
Check if the protective fuse is broken. If it is broken, replace the fuse with a new one
(5 A / 250 V Ø5 x 20 mm). To check and replace the fuse, open the cover of the control box
(see picture).
Picture 5
Fault 2:
The display lights up but the motor does NOT run when pressing the pedal.
Check if the connections of the speed control unit plug, the motor plugs and the synchronizer
(if applicable) are connected properly. If yes, check if the speed control unit switch is good.
Fault 3:
The speed of the motor is not stable.
Check if the V-belt tension is good. If the V-belt tension is too loose, the motor pulley (and /or
machine pulley) can slip over the V-belt. Also check the input power if it is stable.
Fault 4:
The motor stops running by itself.
Check if the machine load is too heavy (material too heavy) or if there is a mechanical blockage
on the machine. Then check and make sure all plugs are connected properly. If all above is
good, check if the display is showing “E1” or “E2”. If so, this motor stop is self protection. The
control box needs to be restarted.
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
