If you have elevators in maintenance, you will occasionally have to deal with elevator failures. Elevators are being used frequently and intensively, so it is unavoidable that they will be sometimes unable to perform. However, a good maintenance party can ensure that the number of lift failures is kept to a minimum. Should a malfunction nevertheless arise, they will do everything they can to resolve it as soon as possible. But how does such a lift failure actually occur? We‘ll give you the five most common causes.
Elevator malfunction cause 1: The doors
This is the number one cause, because the doors of an elevator moving parts that often come into contact with the elevator user. The doors of an elevator work mechanically and the mechanism wears out over time. In addition, elevator doors are often not used correctly. People drive into it with their walker, or insert a card during a move, so that the lift remains on their floor. In principle elevator doors can take a lot, but if this happens often, they will get stuck and it can still cause malfunctions.
Elevator malfunction cause 2: The tableau
The lift tableau, where the buttons are located, is also used intensively. Buttons can be pressed a maximum number of times before they wear out. At some point, the worn button stops working, causing the lift to malfunction.
Elevator malfunction cause 3: The (frequency) control
Another reason that a lift failure can occur is when something goes wrong with the (frequency)control of the lift. The tricky thing about this cause is that it can suddenly appear out of nowhere. This is because both the control and the frequency regulation of a lift are electronic, so there is no visible wear. Nobody can see if there is an elevator malfunction coming in the (frequency)control.
Elevator malfunction cause 4: The relay
The relay of an elevator is a a solenoid -operated switch which can open or close a plurality of switching contacts. If the relay does not work, the switching contacts will also stop working. The result: the lift stops working. Again, it is difficult to predict the moment of the failure. You cannot 'maintain' the lift relay . It has to be replaced after the maximum number of switches. Often manufacturers give an indication of that maximum number.
Elevator malfunction cause 5: Lighting
At first glance, broken lighting does not seem to be a reason for malfunction. After all, the lift can do its job well without lighting. However, we should not underestimate this cause. There are few people who step into a pitch-dark elevator. The result: the lift is still standing still and a technician must come before the lift can be used again. The unscheduled replacement of the lighting in an elevator is often costly. In many cases, the technician has to pick up the light source and return it back. It takes quite some time, the lift will be stationary for a relatively long time. In addition, we all know the statement 'time is money'; it is therefore not a cheap repair. It is better to replace the light source planned after the maximum number of burning hours specified by the manufacturer. Then it takes no time and prevents the lift from being used.
How data helps to get a grip on elevator failures
Whatever the cause of the lift failure is, a lift malfunction is not what you want, at all. That is why it is important to reduce the number of elevator failures as much as possible. The correct use of data by placing lift sensors plays a major role in this. For example, based on generated data you can predict after how many door movements maintenance must be carried out, but also the non-mechanical parts of a lift can be measured.
If it turns out that many elevators after x number of movements will have an error with the relay, you can from now on predict the error. You’ll have the option to replace the relay preventively and on time, at a time that suits you. The same goes for lighting. Does the data indicate that the lighting is about to be replaced? Let the technician fix it during a regular maintenance visit. It will save time, annoyance and a lot of costs!
Want to know more?
Would you like to get some more information on what lift data can do for you? Or do you want to know more about how it works? Please feel free to contact us. We’re happy to tell you all about it!.