电梯Common fault symptoms and troubleshooting methods are summarized as follows:
一.Turn off the bottom key switch, the base station cannot open the door
Possible reasons:
      1.The fuse of the control circuit is blown
      2.The key switch is in poor contact or damaged
      3. The bottom key switch relay coil is damaged or the contact contact is poor
      Elimination method:
      1. Replace the fuse and find the cause
      2, if damaged, replace。If the contact is poor, clean the contact with anhydrous alcohol and adjust the contact spring。

      3, relay damage, replace;If contact is poor, clean and repair contact

 二.There is no signal after layer selection

Possible reasons:
      1, the lamp is broken or poor contact
      2. The selection layer memory relay in the car is missing or the self-locking contact is poor
      3.The layer selection button contact is poor or the cable connection is disconnected
Elimination method:
      1.Remove poor contact or replace the bulb
      2.Replace or clean
      3.Repair button contacts and connect wires
三.There's a layer selection signal, but the directional light is off
Possible reasons:
      1, the signal light contact is bad or damaged
      2. The normally open contact of the selective layer relay is in poor contact, so that the directional relay is not drawn
Elimination method:
      1.Remove poor contact or replace the bulb
      2.Eliminate bad contact
四.After pressing the close button, the door does not close
Possible reasons:
      1, close the door button contact is bad or damaged
      2, the closing control circuit has a break point, so that the closing relay can not be drawn
      3. The closing relay is faulty or damaged
      4. The opening and closing resistance is damaged
      5, the door motor is damaged, the transmission belt is too loose or worn
      Elimination method:
      1. Use the wire short circuit method to determine whether it is the problem of the closing button, and repair it after confirmation
      2. Find the breakpoint of the exit control loop by using the method of wire short circuit, and then repair or replace it
      3.Repair or replace
      4.更换
      5, the door motor is damaged or the belt is broken, replace。If the belt is loose, properly turn the eccentric shaft to adjust the belt tension。
5, the door is closed, the elevator can be started on the selected floor
Possible reasons:
      1, door lock switch contact card
      2, door lock control circuit wiring short circuit
Elimination method:
      1.Exclude or replace
      2, check the door lock circuit, eliminate short circuit point
6. The elevator stops suddenly while it is moving
Possible reasons:
      1, the external power grid power failure or power failure
      2, for some reason, the current is too large, the main switch fuse is blown, or the automatic air switch trip
      3.Secure the clamp action
      4, door knife touch the door kick, disconnect the door circuit
      5.Safety circuit related switch, or thermal protection relay operation
Elimination method:
      If the power failure time is too long, the maintenance personnel should be notified to take rescue measures。Determine the cause and replace the fuse or re-close the air switch。Unplug the main power switch and suspend the occupied well。The brake wrench is used to release the holding brake, and the other person uses the crank handwheel to move the elevator up until the safety clamp block is off the rail, stopping the car at the floor door, releasing the passengers, and then turning on the main power at the top of the car。Check whether there is any abnormality in each part at the above inspection speed, and trim the skid marks on the guide rail with a knife。Adjust the position of the door kick and knife。Check that the safety circuit switch is restored well, or check that the overcurrent setting of the thermal protection relay is appropriate。
Elevator Maintenance Tips
      Elevator maintenance refers to the regular inspection, refueling, dust removal and debugging of the safety device of the elevator parts in operation。Including non-destructive testing and lubrication maintenance of elevator rope。
First, precautions
      1, the elevator is composed of mechanical and electrical parts。If the elevator is not regularly maintained,电梯The safety and security of the United States will not be guaranteed。If the elevator is not refueled when it needs to be refueled, it will cause wear and damage to the elevator mechanical components, greatly shorten the service life of the elevator, and make the elevator unable to be used normally。.
      2, in the process of elevator use, some elevator users in order to reduce costs and save money, find temporary workers or unqualified companies for elevator maintenance。Once there is a security problem, not even the responsible unit can be found。If it is repaired by the elevator manufacturer or a qualified professional company, on the one hand, the maintenance technology and quality are guaranteed, on the other hand, if there is a problem, there will be a special person responsible。
2. Maintenance skills of mechanical parts
      1, the elevator tractor needs oil lubrication。There are two scales on the housing of the tractor。Open the nozzle and check that the oil should be in the middle of the two scales。If the oil level is below the following scale, it means that the tractor should be refueled。Otherwise, the elevator will run for a long time。Poor lubrication, resulting in the elevator tractor and motor burned。After the elevator runs for a long time, the oil should be replaced in time to keep the tractor fresh and well lubricated。
      2. Cleaning and lubrication of elevator car guide boots。As we all know, the guide shoe runs on the guide rail, and there is an oil cup on the guide shoe。In order to make the elevator run frictionless, it is necessary to regularly refuel the oil cup, clean the guide boots, and clean the car。
      3, elevator hall door, car door maintenance。Elevator failure generally occurs in the elevator hall door and car door, so pay attention to the maintenance of the hall door and car door。First, refuel at the refueling place on the door, maintain good lubrication, and the elevator will not make ugly sounds during operation and when opening the door。Pay attention to check the safety touch screen or curtain touch screen switch line of the elevator, because the frequency of the elevator to open and close the door is high, it will damage the switch line, which needs to be checked by maintenance personnel in each work.If you change it in advance, do not let the user door problem make people doubt the quality of the elevator products。
Three, electrical components maintenance skills
      Electrical components are roughly divided into control panels, electrical switches of various safety circuits, etc., which is the brain of the elevator and the central nervous system of the elevator。It governs the start, operation and opening and closing of the elevator, so it is indispensable in daily maintenance work。Make it a priority。

      Do not short circuit the elevator circuit in the control board when working。When the elevator door system fails, someone will, for convenience电梯The door is shorted to detect the fault。This is very dangerous, short circuit door accidents more。Therefore, in our daily maintenance work, we can not short circuit the safety circuit。If there is a short circuit, find out which safety component is the problem, which safety component needs to be short-circuited, repair or emergency repair。After that, remove the short line in time。

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