Bests & Worsts Reviews from Amazon

I hooked up this unit today and made some observations that I hope will help some of you: For this unit, I ordered a large Vmaxtanks 120ah AGM Marine battery with this and it fits perfectly into the plastic case that comes with the pump. The box measures 14" L x 9" H x 9" D. The wiring hookup is easy. There are 3 very different plug in connectors that you cannot connect improperly. The directions say to use 2 separate discharge pipes but it's ironic that the Wayne dual pump combination doesn't use two. No big deal though. I connected the 12 volt backup pump to a new Wayne 3/4HP 120 volt primary pump with a "Y" PVC connector then to a single discharge pipe through a quick disconnect screw on type fitting. It's a 2" PVC pipe so there won't be any flow problem. I used PVC pipes for all of the connections except one. Since the 2 pumps were going to be a tight fit I'd have to be able to turn them slightly so I used a rubber (Fernco) fitting on the backup pump. I also did NOT put the check valves 3' up the discharge pipe as the directions suggested. If you put the check valves up that high you're allowing 3' of water to return back to the pit every time the pump stops and that causes valve thumping. I used 2 check valves from Lowes that have threads right on the bottom of the valves. They screw right into the pump bases (I used some silicone grease to lubricate the threads so they won't seize up). The outlet side of the valve fits a 1 1/2 PVC coupling sleeve but that's where I used the Fernco rubber fitting. This way, for maintenance or if either pump quits, I can simply unscrew that fitting instead of cutting the PVC pipe. After everything was glued and set up I lowered the unit into the sump pit but the pumps wouldn't sit on the bottom. My sump pit is 25" deep by 18" across but, because of the Fernco fitting, I was able to turn the backup pump slightly and they both sat on the bottom nicely. Now for my 3 gripes (Wayne fails to address them in the product description): The backup pump's float switch is not like the typical ones. This one only turns a timer on. The pump then runs for 20 seconds and this cannot be changed. It can be a problem if your pit isn't deep enough or if the float isn't mounted high enough. If either of those situations are true, the pump will empty the pit and keep running until the 20 seconds are up. WAYNE; THERE SHOULD HAVE BEEN SOME TYPE OF ADJUSTMENT ON THE CIRCUIT BOARD FOR THIS! I'm an electronics wiz so maybe I'll look into which resistor causes the 20 second run time and change it out to an adjustable one. (Any help with this Wayne)??? Second; I have a small electric FM radio on my desk and the circuit board in the battery cover blankets it out completely. I had to relocate the battery box onto the floor behind me to be able to hear my radio! WAYNE; USE SOME SHIELDING ON THE CURCUITRY & WIRING! Finally that irritating alarm! It does go off after @ 20 seconds but it needs a volume control! Being an electronics wiz, I solved the problem w/o doing any damage. I removed the 3 small screws that hold the circuit board onto the cover and found the little demon. There's a tiny hole in the gray plastic cover of the circuit board speaker. I GENTLY put a small piece of tissue into the hole and it quiets it down nicely. DO NOT put the tissue in more than 1/16 of an inch or you'll damage the tiny speaker. One more thing (not a gripe) is the charger itself. This is a heavy unit. It will not stay plugged into most electric outlets. I ended up using a small extension cord and laid in on the floor and it works fine. Now that all the demons have been dealt with, it's really a nice unit. To test the backup pump, I simply didn't plug in the 120 volt main pump and I guestimated where I should put the float switch then I let the pit fill up. The backup pump ran quietly for exactly 20 seconds but the pit was emptied in 18. Not a bad guess, eh? Then I plugged in the main pump and it worked flawlessly and very quietly! Hope this helps someone.