How to solve the problem of loud noise from the floor scrubber
The original poster has received many inquiries about floor scrubbers being extremely noisy, to the point that the noise is unbearable. Many people are puzzled: why is the noise so loud? Where is the noise coming from? The machine itself seems fine! What could be the reason for this?
Speaking of loud noise, I can't help but recall an old saying in the automotive industry: abnormal noises in cars. A well-known automotive repair expert told me that all abnormal noises have a source, and once you find the source, the problem is easy to solve. Let's analyze the sources of noise from floor scrubbers.
To analyze the sources of noise from floor scrubbers, we first need to understand their structure. Let's take a walk-behind battery-powered floor scrubber as an example.
The main components of a walk-behind battery-powered floor scrubber are:
1: Disk flashing system
2: Mobile System
3: Water absorption system
4: Water tank system
5: Electrical control system
6: Auxiliary Systems
Please see the analysis below. After reading the analysis, I believe everyone will find the floor scrubber, this cleaning marvel, to be quite simple.
Of the six systems mentioned above, the brush system and the water suction system are most likely to produce noise. This is based on the author's experience accumulated over many years of floor scrubber repair.
Generally, the moving system, water tank system, electrical control system, and auxiliary systems are unlikely to cause problems or noise. Even if they do, they are usually minor issues, such as loose screws. We won't discuss those here; this article will mainly focus on the noise sources and maintenance methods for the brush system and water suction system.
The floor scrubber's water suction system consists of a water suction motor, water suction pipes, and a squeegee assembled on the machine's dirty water tank.
If the noise is coming from this part, first analyze the squeegee section. Noise from the squeegee is often caused by insufficient air intake in the front rubber section. The repair method is to adjust the squeegee angle to make it perpendicular to the ground or increase the air intake of the front rubber section.
After analyzing this, let's look at the suction pipe. Generally, dirt and debris easily clog the pipe. This reduces suction power, resulting in incomplete cleaning of the floor. It won't cause noise. The remaining issue is the suction motor. Motor problems are usually due to damage to the internal second bearing (the lower bearing of the motor). Why would it break? Isn't it inside the motor? Isn't it not in contact with water? This is the first reaction many customers have when I mention this reason. The suction motor is installed at the bottom of the wastewater tank, and its suction inlet connects to the wastewater tank. During operation, it's responsible for removing air from the wastewater tank, creating a negative pressure at the inlet. This is how wastewater is collected.
Having explained this, it's not hard to understand why the motor's internal bearings would fail. Since everything is interconnected, if the dirty water tank is full and not drained promptly, water will enter the motor. One or two instances might not be a problem, but repeated occurrences will inevitably cause motor issues. A damaged motor bearing will cause the motor to run unevenly, resulting in increased noise. Finding the cause and replacing the motor bearing will solve the problem.
The brush system is second only to the water suction system in terms of noise generation. The brushes in the brush system are constantly rubbing against the ground. If the brush clips malfunction, the brushes will rotate unbalanced, resulting in increased noise. The solution is to replace the brush clips. Secondly, noise can also occur due to a lack of lubrication in the gearbox of the brush motor over time. The solution is to add new lubricating oil to the gearbox.
Once the source of the noise is identified, repairs become simple. The above is the author's analysis of some repair methods for noise generated by floor scrubbers in Suzhou. This is for reference only. Different machines have different structures; repairs should be based on the actual machine being repaired.