| 1 | Machine does not work , three phase power indicating LEDs are not lighting up. | 1.No AC supply. 2.MCB tripped. 3.No output from CT18V. | 1.Restore AC supply. 2.Check the wiring for any short circuit. If satisfactory, reset the MCB. 3.Check and replace if defective. |
| 2 | Conveyor is not moving. | 1.Conveyor speed set to 0. 2.Conveyor motor stalling. 3.Defective conveyor motor. 4.Wear & tear of carbon brush. 5.Conveyor chain disengaged from the sprockets. 6. Conveyor chain breakage. 7.Defective conveyor driver sprocket. 8.Defective conveyor drive board. 9. Blown out of FUSE. 10.Defective IRF740/optocoupler. | 1.Increase the conveyor speed. 2.Reduce load on the conveyor. Install the machine with a slope towards the direction of the conveyor movements to increase the load carrying capacity of the conveyor. Use leveling screws to attain this. 3.Rectify/replace the conveyor motor. 4.Clean & reinsert it. 5.Engage the conveyor chain with the sprocket. 6.Replace both chain together to avoid the mismatching of chains. 7.Replace the conveyor driver sprockets. 8.Replace the board for conveyor drive. 9.Replace the FUSE. 10.Replace it. |
| 3 | Conveyor chain slips from the guides. | 1.Lower conveyor tension. 2.Misalignment of sprockets and chain rails. | 1.Increase the tension by adjusting the conveyor tension adjusters. 2.Align the sprockets and chain rails. |
| 4 | Air blower is not working | 1.Fan switch is off. 2.Phase sequence RYB is not in sequence. 3.Defective blower motor. 4.No supply at motor end. 5.Defective contactor or relay. | 1.Switch on the fan. 2.Interchange any of the two phases. 3.Replace the motor. 4.Check supply voltages at the motor end. 5.Replace the defective. |
| 5. | Blower motor works , but the air turbulence fan does not rotate freely | 1.Shaft fitting Allen screw loose. | (a) Check the fan shaft assembly. (b) Ensure free rotation of the shaft and a little axial play. (c) Refit the Fan Assembly Mounting Plate. |
| 6. | Insufficient shrinking | 1.Heater switch is off. 2.Low temperature setting. | 1.Switch on the heater. 2.Increase the temperature setting. |
| | 3.Temperature is not building up. | 3.Refer to complaint no. 7 |
| 7. | Temperature is not building up. | 1.Loose connection of heaters. 2.Heater failure. 3.Low temperature setting. 4.Defective contactor for heaters/relay for heaters. 5.Defective PT100. | 1.Make proper connections. 2.Replace the defective heater. 3.Increase temperature setting. 4.Replace the relay from the board/ replace the contactor. 5.Replace it. |
| 8 | Excessive Shrinking | 1.High temperature setting. 2.Low conveyor speed. 3.Defective Temperature Sensor (PT100). 4.Defective Heater Contactor or relay due to contact welding. | 1.Reduce the temperature setting. 2.Increase the conveyor speed. 3.Replace the defective part. 4.Replace the contactor for heater. |
| 9. | Shrinking is not uniform | 1.Air turbulence fan is not working or rotating in wrong direction. 2.Heaters are not working. | 1.Refer complaint troubleshooting Case 4. 2.Identify the defective heater and replace. |
| 10. | Abnormal sound and vibration | 1.Air turbulence fan loose. 2.Fan Motor Bearing failure. 3.Machine is not installed on a level surface. | 1.Tighten the nut with which the Air Turbulence Fan is attached to the blower drive shaft. 2.Replace the defective bearing. 3.Level the machine using the leveling screws. |
| 11. | Conveyor is Moving at constant speed | 1.Defective IRF740 in the PCB | 1.Replace PCB or IRF740 in the PCB |
| 12. | Shows different Temperature values | 1.Defective 18V CT 2.EMI problems | 1.Replace 18V CT 2.Make proper FRC & other cable routing. |
| 13. | Garbage values/ Display black out when heaters are turned on.. | 1.EMI generated through contactor arcing. | 1.Replace contactor connections for loose terminals. 2.Connect a 220ohm resistor and a 104/1kv capacitor in series across A1 and A2 of contactor. 3. Replace Contactor. |
