Maytronics 12+ year Robotic Pool Cleaner User - Review (diagnostic but not limited to)
I have been using Maytronics robotic pool cleaners (purchased one got another one from disgruntled owner curb side). I will be making two threads. This thread is the review of their Diagnostic which applies to many of their commercial and residential models. The second thread is where the company appears to be going with their products and business model.
Here is the good the bad and the ugly review. Both units are stored in a shed and not keep in the pool more than two days at a time.
Excluding the motors and the flaw in the power supplies, the robots from the Diagnostic era are very well made. The comb brushes on these two units are over ten years old and still look new. Material is pliable and no missing leafs. The bag is still in good shape. It Shows wear as expected but still performs. When I purchased the unit I expected to replace the bag every two years. The quality of this bag was a pleasant surprise. Case has faded, but all plastic parts are intact and strong. Case has cosmetic scratches from banging on pool steps and corners, but still very solid. Inside track teeth do break and the cause is discussed in the ugly section below. Iím sure there is wear on the other parts, but they still function.The Bad:
1) The Power Supply:The Ugly:
The early model power supplies came with a seal between the power supply case and heat sink. There is about a centimeter between the circuit card heat sink. Because of their attempt to make the power supply case water resistant it also became a trap for condensation build up inside the unit. This moisture would bridge the gap between the heat sink and the circuit card resulting in the circuit card shorting out requiring circuit card replacement. In my case, the short happened about three months out of warranty. Part was about 110 US dollars. The service center was kind enough to sell and ship me the part without me sending the unit to them. Maytronics resolved this design issue by removing the seal which was not in the second unit (about a year newer). Removing the seal was also recommended by the service center. I considered this a minor repair considering the robustness of the rest of the machine (not including the motors).
2) The Motors/Motor Assembly:
I suspect this is the biggest complaint Maytronics has received on their robotic pool cleaners. If an owner gets 6 years out of the motors they can consider themselves fortunate. I was able to get about 6 years out of each machine but was not without tweaking and babying. The motors failing are not the biggest issue/complaint. The issue is the replacement price of 600-700 US dollars for a unit that cost 900 US dollars new. Apparently the motor cannot be purchased and the complete assembly must be purchased. It is ironic that a refurbished unit can be purchased for about the cost of the motor assembly. It is nice to see an advertisement by Maytronics which they have addressed this issue (more on this in the second thread).
I had ruled out getting another Maytronics Dolphin because of the motor issue until I saw they had address the issue and also made parts owner replaceable with DIY. However that will be the topic of the next thread. Hopefully I can get some help with that dilemma.
It surprised me that I have not seen the ugly show up on any searches I have done.
1) Track Robots cannot pass over outlet nipples. This in itself is not the end of the world, but it does damage the unit. Over time the belts becomes stretched and torqued and the inside belt teeth break off and the belts come off jamming the machine. I noticed Maytronics has not address this issue in either of their new product lines. I suspect this is an issue for all track robots not just Maytronics.
See video of Supreme M4 at time 1:50 https://www.youtube.com/watch?v=8my5Tz40N38&app=desktop
Also can be seen on the commercial model Dolphin Wave 75 video at 9:30:
Dolphin Wave 75
This type of nipple:
2) Wear on pool surface/finish
Iím surprised this has not been discussed. It is an issue for a lot of surfaces. In this photo it can be seen what 12+ years of robotic clearer use does to the finish.
Bumping that causes the issue can be seen at 12:05 of the Wave 75 video:
Hope this helps folks doing their research on robotic cleaners