I noticed water dripping under my drivers side slide, looked at obvious caused and finally found my Aquajet ARV 55 series pump dripping at the pressure switch diaphragm. When I took it apart I found pieces of white scale. My guess the diaphragm is leaking but can't really see an obvious place, but it would take much to result in a drip drip drip. I went on the Aquajet web site and you can't buy just the diaphragm, you have to buy the whole pressure switch and pump end for $$$$ Did multiple searches and found a part number for just the pressure switch. PSW 580R 60 A general search found this sold by multiple sources, I ended up buying from Tractor Supply, with shipping it was ~$35. Considering I needed just the diaphragm it was hard to swallow but better then buying the whole head.

The new Remco-Aquajet 55RV water pump can still be adjusted. When you are looking at the head of the pump-(refer to pictures in prior post), The flat cover on the lower left of the head is the pressure switch and the Switch cover with the wires connected to it on the right of the head is the cut off switch. They both have an Allen screw for adjustment. The left one is 3/32" hex and the right one is 1/16". The older pumps had the electronics mounted on the head of the pump. in the later pumps they moved the electronics under the pump and sealed it with a gasket and cover plate. TOn the new Aquatec pumps the electronics are still mounted under the motor, but are sealed in Epoxy. There is no electronics in the head, the switch that has the wires connected to it is just a micro-switch to turn on and shut off the motor. The post from Tom Cherry with the instructions to adjust the pump to stop it from pulsing is the same with the new pumps. Remco seals the Allen adjusting screws with RTV. Just pick the RTV out to adjust. I have replaced at least four Water Pumps with the Aquajet 55RV and have had to adjust everyone after installation. I am attaching a Drawing of the mounting pad I designed to mount my Water Pump. It will eliminate almost all the noise from the pump. Make sure when you install the pump that you install flexible looped water lines to and from the pump. The installation of the coiled flex line will help eliminate the Hammering. I have also included pictures of the Water Pump Installation in our coach. Water Pump Pad.pdf

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Aquajet ARV 55 series pressure switch diaphram

By jacwjames
August 8, 2023 in Water Systems

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Go to solution Solved by David Pratt, August 11, 2023

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Aquajet ARV 55 series pressure switch diaphram

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