The Poolvergnuegen [pronounced POOL-VERG-NEW-JEN] Pool Cleaners tend to run longer, with out needing internal parts than other cleaners I have worked with. Hayward has recently purchased Poolvergnuegen and sells the product as the Aquanaut. Both cleaners are identical, except for the cosmetics, and are both available in 2 and 4 wheel models. The Aquanaut is sold through retail channels while the Poolvergnuegen is sold through service channels. Hayward has made some engineering advancements to the cleaner since acquiring the company, adding bearings to the wheels and increasing the warranty to two years, rather than the original one year the Poolvergnuegen's had. The Poolvergnuegen cleaners with a two year warranty, will be labeled on the cleaner as 'New Generation' with plastic clips covering the wheel bearings/holding the wheel on. [Tires and skirts are not covered under the two year warranty]
As good as these cleaners are, parts do wear out. Cleaners run under pressure, 6-10 hours a day, each and every day. They are work horses and must be kept up over time. After 1 year on the older Poolvergnuegen cleaners, and two years on the new generation Poolvergnuegen cleaners and the Aquanauts, expect to start needing to replace some of the parts. Parts are available if needed separately, however If too many parts wear out for it to be cost effective to fix, especially on an older generation Poolvergnuegen, Hayward now offers a lower propulsion kit in both the 2 wheel and 4 wheel versions for a fraction of the price of a new cleaner. The lower propulsion kits come complete with everything except the skirts, tires, turbine cover and top body cover. In the picture above, you see a lower propulsion kit for a 4 wheel cleaner. This just adds to the reason I like these cleaners.
Tires are the most common part to be replaced on these cleaners with in the first two years. Tires must be replaced as soon as they reach the wear markers on the side of the tires. The wear markers are raised bumps as shown above in the screen shot from the owners manual. The tires can wear faster in pools with a rougher surface like 3M Quartz and Pebble Tech, but will wear down to the markers with-in a year. Allowing the tires to wear down past the markers too far, will put extra stress on the internal parts and causes bearings, drive shafts and gears/teeth to wear out prematurely. I check the tires every 6 months. Excessive wear of internal parts with in the warranty period as a result of negligence [not replacing the tires] will void the warranty.