About electric pallet truck circuit short circuit fault

I believe that many friends will encounter the fault of the short circuit of the pallet truck when using the electric pallet truck. When faced with such a problem, you must remain calm. The editor will explain in detail the short-circuit detection and maintenance of the pallet truck circuit:

1 instrument inspection method

Test with a DC voltmeter or a multimeter, the DC voltage should be around 20V (24V cars should be around 30V). Use the black test rod to ground the soldering iron, the red test rod starts from the positive pole of the battery, and goes to the electrical equipment step by step in the wiring sequence. Touch the direction to check the voltage. If the voltmeter pointer swings to indicate that there is voltage, the pallet truck circuit is normal; if the voltmeter pointer has no indication, the pallet truck circuit is open, and the open circuit is between the voltmeter pointer and no indication. If the voltage indication value is too small, it means that the circuit of the pallet truck is in poor contact.

2 test light inspection method

Use the instrument bulb to make a test light to check the circuit of the pallet truck When shorted, use fishtail clips to clamp it in a reliable ground wire. Turn on the switch and check the test stick tip from the positive side of the battery to the powered device in the order of wiring. If the test light is on, the circuit between the battery and the ammeter is OK. If the test light does not illuminate, there is an open circuit fault in the pallet jack circuit. An open circuit is the portion of the circuit between the test light and the test light.

3 fire check method

When there is no small test light on hand, repair The master can use a thin wire, let one end of the wire touch the pole of the electrical equipment in turn, and use the other end to instantly touch the fire on the engine body. Sparks indicate that the circuit of the pallet truck is open, and no sparks indicate an open circuit. An open circuit is in the portion of the wire between sparking and non-sparking. When using this method, special attention should be paid to the wire must be thin; in the event of fire, the time to scratch the engine body must be short, so as not to burn the fuse and prevent fire at the same time. Because this method is prone to damage to the electronic components in the pallet jack circuit, it is not recommended.

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