my DIY automated 2 part dosing pump system

[glennr1978]

Just as with any other piece of equipment, the Aqualifter pumps require periodic maintenence. Ive yet to replace a diaphragm or anything else for that matter, the only thing I do is take it apart, clean and inspect and reassemble. I would however, suggest using a filter at the intake.

Cleaning the pump periodically is definitely a good idea. Why would you want to run a fiter on the inlet side though? Seems to me it would easily clog with Ca build up.

[bimmerzs]

The timers have a battery back up that will keep them set. I believe it's for 48 hours.

Excellent....

[JimD]

I use mine for top off so the inlet is in a bucket of RO water, sometimes crud can get into the water and get sucked up by the pump, running a pre-filter will maximize the life of the pump. Your application may not require a fiter.