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New Zealand, Wellington
1 Level
701 Review
24 Karma

Review on Gray Liberty Pumps 257 Pump, 1.5 Inches by Kavon Wiley

Revainrating 4 out of 5

Just about perfect for rough plumbing work

My house is on a spring and the cesspool is constantly running water. The typical lifespan of a drain pump in my house is about a year. The failure is due to the sheer number of on-off cycles it goes through, or clogging with sound collecting on intake grilles or exhaust pipes. At first glance, the groundwater looks clean, but it's pumping A LOT (tens of thousands of gallons a day) so fine clay deposits get quite large over time. So every three months I stretch the exhaust pipes to clean them. I used to buy Rigid brand pumps at my local hardware store about every 12 months. My first Liberty pump lasted 15 months and cost about the same as the Rigid. I thought it was lucky and bought another one. This lasted 11 months. You can hear the pump running but no water is being pumped. It was winter and I replaced it with a WAYNE CDU790 pump (about 30% cheaper) and kept the Liberty pump for the summer. The Wayne pump showed the same symptoms after about 6 months. After inspecting the removed Liberty pump, I found that the intake screens were completely clogged and bled them with a high-pressure hose. It worked, and now it's working again to pump water out of the swamp! I found the Wayne pump screens to be clogged and cleaned them out the same way. My plan is to change the pumps every three months when I'm laying pipes. The only complaint I have about the Liberty pump is that the float switch only allows about 4 inches of travel between the on and off positions. This gives about a 15 second break. Time between cycles for the pump I use. So it works all the time - I'm guessing about 1000 cycles a day. I connected a Superior Pump 92010 vertical float switch which has an adjustable float height to shut off just before the pump's float hits. off the mark. As a result, the pump's own float switch is always in the on position and the secondary float controls the on-off cycles. This allows for a maximum stroke of about 10 inches between cycles and the pump now has a rest time of 1:38 minutes. 3:10 minutes between cycles and runs. With a published pump spec pumping 30 gpm at 15 feet head, that works out to an estimate of almost 30,000 gallons per day! My second complaint is the 1/8" vent that is required on the pressure pipe. When the pump is running and the water level drops below the vent, there is a loud splash of water from the vent that can be heard throughout the basement. We watch movies and listening to music in the basement and the sound of the water running every 2 minutes or so is pretty much a wayne pump that doesn't require bleeding and if the liberty pump fails before the wayne i might consider buying another wayne cdu790 to avoid the noise problem.about a year - well within the manufacturers warranty period.Since I literally work to death for them I don't think it's fair to call on a warranty.The crashes I'm experiencing are from overuse With regular use (like my old house where the pump ran about 10-20 times a year) failures from age or contaminants in the water such as corrosion, bearing/seal failure or r sticky float switches are caused. I don't have the experience to comment on how they age with prolonged use (I'm guessing 10+ years is common) but just heavy use does this Liberty pump hold up pretty well.

Pros
  • Certified
Cons
  • I have no negative feelings, it's just fine