Why can't the electric pallet truck move forward and backward? What is the solution?

Why does the electric pallet truck fail to move forward and backward? What is the solution? There are a few reasons why the electric pallet truck cannot move forward and backward, and the solutions are attached, hoping to be useful to everyone.

1. The battery of the electric pallet truck is insufficient or invalid. Maintenance method: charge in time. If it fails to charge, check the pallet jack charger or pallet jack battery for faults according to the following points.

2. Check whether the charger of the pallet truck is faulty? If so, find an electric pallet truck manufacturer to solve it.

3. After the pallet truck charger is connected, is there an electrical output with a clamp meter?

4. Check whether the charging terminal is loose or oxidized. If there is, it will cause poor contact and cannot be charged.

5. Has the battery of the pallet truck been placed for too long, resulting in serious vulcanization of the base material of the battery pack?

6. Use a multimeter to measure whether the battery voltage of the pallet truck meets the standard voltage of the battery.

7. After the above exclusion is completed, it still does not work. Find an electric pallet truck manufacturer or professional maintenance.

8. The travel control microswitch of the electric pallet truck is loose. Repair method: Tighten the screws.

9. The DC contactor of the electric pallet truck is faulty and needs to be repaired and replaced.

10. The electric control board of the electric pallet truck is damaged, and the electric control board should be repaired or replaced by a professional. For inspection and maintenance, please refer to the following points:

11. Whether the surface of the mainboard of the pallet truck is scorched, scorched, blistered, exploded, damaged, or rusted on the socket.

12. Multimeter measurement method: Whether the +5V and GND resistances are too small (below 50 ohms).

13. Power-on inspection: For the board that is obviously broken, the original voltage can be slightly increased by 0.5-1V, and the IC is rubbed on the board after power-on to make the problematic chip heat up, thereby sensing the .

14. Logic pen check: Check the input, output, and control terminals of key suspicious ICs for the presence or absence of signals and their strength. 5. According to the instructions in the manual, first check whether there is a signal (waveform) at the input and output terminals of the suspect chip. If there is input or output, check the IC control line signal (clock), etc. If there is this IC is probably broken and there is no control signal. Trace to its previous pole until you find the damaged IC.

15. The drive motor of the electric pallet truck is faulty. Check the following points and focus on maintenance.

16. The drive motor of the pallet truck cannot be started. It may be because the fuse is blown, the control circuit is blocked, the motor winding is seriously short-circuited or open, the short circuit between the commutators, the brush is not in good contact, the load is too heavy, or the bearing and other mechanical damage.

17. The abnormal speed of the drive motor of the pallet truck may be caused by short circuit or open circuit of the winding, incorrect position of the brush and overload, damage to the bearing, and low power supply voltage.

18. The spark generated by the brush of the drive motor of the pallet truck may be caused by poor contact of the brush of the pallet truck, uneven surface of the commutator, improper position of the brush, unclean surface, short circuit of the commutator or motor Winding short circuit, etc.

19. High temperature may be caused by overload, too tight bearing and oil seal of electric pallet truck, damaged or poor lubrication, wrong shaft core, friction between armature and magnetic pole, short circuit of winding, and excessive pressure of brush , incorrect location, poor rectification and other reasons.

20. The drive motor of the pallet truck has noise, which is mainly caused by damage to the bearings of the electric pallet truck parts, uneven surface of the commutator, brush vibration or friction.

21. The brakes of the electric pallet truck are locked. Maintenance method: There are many reasons for brake failure of electric pallet trucks, including the following three points. One is that the brake system of the pallet truck is not regularly maintained. There are too many impurities in the brake master cylinder, poor sealing, failure of the vacuum booster pump, dirty brake fluid, or mixed use of several brake fluids, air resistance after heating, oil leakage from the brake master cylinder or sub-cylinder, air storage tank or The pipe interface is leaking, and the oil pipe is not blocked. The second is a mechanical failure due to improper operation or an attempt to adjust the distance of the drive wheel brake pads. The third is to replace the oil in the brake cylinder of the pallet truck, and vent the air before adjusting the local brake.

22. The electric pallet truck does not move at all

23. Check whether the electric door lock is opened or damaged. Maintenance method: directly replace the new electric door lock.

24. whether the battery is charged, the battery is insufficient. The fix: Replenish the battery and charge it.

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