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Elevator maintenance procedures steps

Mar 08, 2018

Elevator maintenance procedures steps

  One: Preparation

 1: contact the customer, first of all to the customer engineering department or the elevator authorities, contact the customer to inform us today in accordance with the planned maintenance of the ladder number, due to maintenance work must be stopped elevator operation, whether it is possible to stop operations, sure to stop After doing some work. This work must pay attention to respect others, polite language when communicating with customers. This work is very important in the maintenance, 1): Let the customer feel a sense of respect. 2): To avoid causing misunderstandings, if you start working without telling the customer to stop the ladder, the customer will think that the maintenance unit is too casual. Stop the elevator and don't tell it. It is not polite. 3): to avoid causing you to dry out, find a customer sign, the customer said: you come to work and did not tell us the contents of today's maintenance and ladder number, I do not know what time to do when you do, how do I give you Signing confirmation. 4): Avoid some other unpleasant things. ↓

  2: When working in the site, we must dress uniforms, safety shoes and helmets according to the rules of the company and comply with all the rules and regulations of the clients. For example, if the high-class customers want to go through the staff's passage, the staff must abide by them in order to avoid the dispute .

We want to show our profession from small problems. ↓

  3: Check the tool so as not to cause no tool to waste time at work, take safety fence. ↓

II: Elevator stairs maintenance inspection work inside the car

  1: Before stopping the ladder, be sure to surround the company standard fence at the base station, enter the elevator in a separate state near the car, check the intercom and the control room call status, and inform the customer that the monitoring room personnel stop the ladder maintenance or inspection. service. ↓

  2: In the car with a separate upper and lower express run several times, you can check the content.

  A: Check the buttons, display, switches, lighting, and ventilation in the car.

  B: Whether there is any abnormality in the elevator door opening or not, and whether the light curtain and the security touch panel work properly.

  C: Car-steering control box, overhaul test, emergency stop, independent, driver and other switch tests.

  D: Inspection of the leveling of the elevator, pay special attention to checking the floors of the first floor, the highest floor, and the use of a large number of floors.

  E: Check the running status of the elevator, whether there is abnormal sound, shaking, vibration, and whether there is any abnormality in starting and stopping.

  F: Call button outside the hall to show inspection.

  G: If an abnormal situation is found, it can be handled in time at the site where it is handled. If it cannot be processed, record it and report it to the company in time. ↓

  3: The emergency light checks, one person stays in the car, one person goes to the computer room to cut off the power (the 380V, 220V all breaks), after the power is cut off, checks the outage lamp, the conversation device is normal. ↓

Three: check engine room maintenance ↓

  Before the machine room must ensure that all hall car door closed, and shut down after the door machine power supply, maintain an independent or overhaul status.

  1: Check the room environment, lighting, ventilation, fire equipment, doors and windows, room door warning signs, engine room a safety warning signs. ↓

  2: Run up and down with a separate express train several times and local operation, with the method of seeing, hearing, touching and smearing, check the hoisting machine, speed limiter, brakes and rotating parts with or without abnormal noise, vibration, odor and surface abnormalities Wait. If found to be abnormal immediately stop the investigation. ↓

  3: Check the brake work, brake lining and brake wheel clearance check, check the brake lining wear status, activity axis pin lubrication flexibility check. ↓

  4: Speed limiter work status check, whether there is abnormal noise during operation, whether there is any abnormal swing wire rope (especially high-speed elevator cooling in the weather is often sticky in the sheave of the oil in the sheave led to rope sway caused by security protection caused by sleepy trouble , Check should pay more attention), the pin and bearing lubrication check (bearings at least once a year to add a lubricant), check whether there is no foreign body rope, speed limiter check seal check, safety electrical switch experiment confirmed. ↓

  5: Check the lubrication condition of the motor, traction sheave, and guide wheel bearing. Lubricate the lubricant at least once a year (note that it must be de-energized when filling the lubricating oil). The edges of the rotating wheels should be painted yellow. Check each rope anti-jump device. ↓

Check the gearbox, whether there is abnormal sound, oil level inspection, oil seal inspection, whether the oil leakage is within the national standard. Turbine, worm inspection, tooth and surface wear inspection.

  6: Braking torque confirmation, at least twice a year. ↓

  7: Speed limiter safety pliers linkage experiment (remember to use the idle test), whether the electric switch works normally, whether the safety pliers can normally seize the car, cut the hoisting machine and cannot lift the counterweight. At least once a year, but must be confirmed experimentally before the annual inspection. ↓

  8: Each display of the control cabinet is checked (P1 board, W1 board, etc.). For each voltage measurement check, the voltage at 79 points should be within 130. If the voltage is too high, the transformer tap voltage must be adjusted. ↓

  9: Clear the chip (reset), write the layer, it is best to use a slow car to write, this is best not to exceed two months operation. ↓

  10: Weighing the no-load data check, check the operation of the elevator to check the adjustment, at least one quarter to re-write a no-load. ↓

  11: traction wire rope inspection, flat signs check the surface without distortion, broken wire, broken stock phenomenon, at least twice a year carefully examined. ↓

  12: Control cabinets, safety switches, motors, brakes, main power switch, 220V power switch, terminal block, inspection and cleaning of fastening conditions (Note that power must be off when tightening). ↓

  13: Clean the equipment room surface, floor clean. ↓

  14: Resume power transmission, check each signal lamp, and run the elevator up or down to check whether there is any abnormality and lift the elevator to the top floor. Send hoistway lighting, ready to go to the top of the car homework inspection, again confirm whether the short wiring is not removed and doors and windows are locked. ↓

Four: Car top operation

  When entering the top of the car must pay attention to safety, open the car, determine the location of the car after the hall door open, be sure to hit the car top access switch repair location on the car top.

  1: Check the operation of the decelerator at the top. Speed reducer in the form of travel switches, and sensors, pay attention to the size of the inspection, and the surface conditions. ↓

  2: Limit, limit switch experiment check, pay attention to the limit switch work should not be started up and down the lift, limit work can be opened in the opposite direction. Limit switch working size must be less than the corresponding buffer distance. ↓

  3: The elevator slow down the car open to check the hall door, on the cradle, ridge tank, track cleaning, door lock electrical switch experiment, lock the hook to check the situation, manually check the hall door with abnormal noise and abnormal resistance, Door and door frames and other clearances to check and adjust the door slider wear check, self-closing device test to check and tighten the screws. Open the hole warning ring check. In the inspection layer door at the same time check the car door knife and floor door ridge gap, door knife and croquet gear together gap, door ball and knife on each side of the gap, such as the gap is too small must pay attention to adjust to prevent the door knife Hit the ball and cause an emergency stop. ↓

Important Note: The elevator should not be started when the electric switch of any hall door is disconnected. Absolutely not allowed to short-circuit the electric switch of the door lock in any way. The mechanical lock hook must be effectively locked after the hall door is closed. Only the special triangle can be used. The key opens.

  4: Car, counterweight rail joints, hoistway every magnetic plate inspection, rail brackets, then the guide plate, pressure guide plate and other screws tighten the inspection, fasten the screws at least once a year, rail brackets, I-beam, pressure Guide cleaning once every six months. ↓

  5: The inspection of the intermediate junction box is clean. Check all the terminals. ↓

  6: check to the middle of the counterweight, rope tension check (at least once a quarter), with or without abnormal sound, check the wear of heavy guide shoes. Check if there is no abnormal noise on the counterweight sheave At least once a year Lubricating oil (2: 1 winding), anti-kick device check. Check the rope sling device (1: 1 winding type), (2: 1 winding type) wire rope sling device in the machine room. Check the tightening screws and other screws to check the weight of the fastening screws at least once a year. ↓

  7: the lower deceleration device check, deceleration device has the form of travel switch, and the sensor form, check attention to the size, and surface conditions. ↓

  8: Car top equipment,

  A: Each safety switch test checks for cleaning, emergency stop, safety window, etc.

  B: leveling device inspection (leveling, re-leveling sensor), clearance check, toothing degree inspection, screw fastening, wiring fastening condition inspection, cleaning, this device must be kept clean, or the magnetic force caused by foreign matter may be insufficient Cause elevator failure.

  C: Check the deceleration device (deceleration sensor), clearance check, check the degree of engagement, tighten the screws, check the fastening of the wiring, and clean. This device must be kept clean, otherwise the elevator will fail due to the magnetic force caused by the foreign object.

  D: ventilation device inspection (fan, air conditioning), with or without abnormal noise, vibration, fastening screws to check and clean.

  E: Inspection of the junction box at the top of the car, inspection of the terminals, fastening conditions and cleaning.

  F: Check whether there is no abnormal noise at the top of the car top At least once a year, add oil (2: 1 winding type), anti-skid device inspection. Check the rope sling device (1: 1 winding type), (2: 1 winding type) wire rope sling device in the machine room. Check the tightening conditions of the fixing screws. Each fixing screw is tightened at least once a year.

  G: guide shoe inspection adjustment, wear boots lining inspection, serious wear and tear should be promptly replaced when the gap is too large, oil cup inspection. Rolling shoes is strictly prohibited on the guide rail filling oil, the roller surface without damage, and the guide rail face clearance check adjustment.

  H: Check the fixing screws of the car. At least one fixing screw is tightened once a year.

  E: car top alignment and fixed conditions, car top clean. ↓

  9: Door System Check

  A: door machine timing belt, V-belt check, tightness adjustment check, the surface without damage, there is no foreign matter within the timing belt, the belt and the wheels and other components in the door when there is no abnormal friction. clean.

  B: door motor, encoder work in the presence of abnormal vibration, abnormal sound, the fastening screws tighten, clean.

  C: The door of the car door is checked for cleanliness, whether there is abnormal noise when the door is opened or closed, the check and adjustment of the door of the car door is in place, the inspection of the GS dimension, the inspection of the electric switch, and the attention of the car door when the electric switch is turned on.

  D: Car door drive inspection, the connection pin, shaft lubrication, safety touch panel lubrication joints, door slider check.

  E: Car door inspection of the gap adjustment (door frame, seam, ridge), light curtain touch panel adjustment check. Check the fastening screws, clean. ↓

  10: Leaving the top of the car, one person will open the elevator to the leveling area to open the door at the top of the car, call another person to enter the car to control the elevator to check and repair, and then open the elevator to a convenient position to leave. When leaving, one must walk out of the car completely. After the top of the car roof maintenance, emergency stop and other switches reset. ↓

V: pit operations

  Pit into the pit must pay attention to safety, with a helmet. One person first lifts the elevator to the top floor, opens the elevator to the top floor and automatically restores the elevator to let him know that the other elevator has reached the top floor (in which case the car door cannot be closed) and then makes an independent inspection. Another person saw the display signal at the lower level and opened the hall door and then stopped the lighting with an urgency. Notice that the ladder is in the pit. Note that after entering the pit, such as layer outside the door without special custody to be closed the layer door. ↓

  1: Check the measurement of the buffer safety distance meets the national standard requirements. Check that the descendants are safe in the pit, reset the emergency stop, and tell the other person to open the elevator to the ground floor (passive answer, inaudible operation). After a few floors, remind the companions to open the lift to the ground floor. For example, the floor notices should be contacted in a clear and effective way (such as mobile phones, intercoms). After the elevator is opened to the ground floor, an emergency stop is performed to check whether the safety distance of the car buffer is in compliance with the national standard. If the safety clearance is too small when the need to intercept the rope promptly contact the company, for fee but also promptly inform the customer. ↓

  2: The person who called the car lifts up with the slow car. The pit man tests the pit safety switches (counterweight car bumper switch, speed limiter section rope switch, compensation sheave anti-trip switch, emergency stop, etc.). ↓

  3: Check the governor tensioner, check the angle between the arms, check the ground dimensions such as small should be promptly adjusted or charged speed limiter wire rope. The speed limiter segment rope switch working position checks and adjusts, in order to prevent the switch work from causing the breakdown. Whether or not the tensioning wheel has abnormal noise in operation, at least once a year, add oil once. ↓

  4: Check the compensating rope tensioner. If the size inspection is too small, it is necessary to adjust or intercept the compensating rope in time. If there is any charge, you must inform the customer in time. Anti-Shen and anti-safety switch work position check adjustment to prevent the switch work caused failure. Whether or not the tensioning wheel has abnormal noise in operation, at least once a year, add oil once. ↓

  5: buffer check, fuel check, with or without oil leakage seal without damage. Buffer distance marked signs of inspection, the new seizure increase. ↓

  6: The pit fixing screws fasten at least twice a year, all parts clean, pit cleaning. When out of the pit with two people pay attention to safety, when people completely out of the pit after the safety switch reset, turn off the shaft lighting. ↓

  VI: Other inspections

  1: overload test, at least once a year, must be confirmed before the annual inspection.

  2: Fire test, at least once a year, must be confirmed before annual inspection.

  3: If elevator operation monitoring function check function is working properly.

  4: Drag test: After the counterweight fully compresses the buffer, the car continues to open upwards, and the car must ensure that it cannot be lifted. At least once a year, must be confirmed before annual inspection. New test expensive increase. ↓


  Seven: finishing operations

  1: In the car, lift the express train up and down to check if there is abnormal noise, vibration, shaking, etc. in the elevator operation. ↓

  2: inform the customer that the elevator has been maintained and put into operation, if the customer agrees to put the elevator into normal use. Such as the grass-roots Hall doors, car floor, hall floor in front of unclean but also to inform customers to make cleaning workers do cleaning jobs. ↓

  3: The maintenance fence and tools into a dedicated warehouse. ↓

  4: fill in the work order contact customer signature confirmation. Leave the scene. ↓