Skip to main content ↑ ↓
Topic: Fresh Water Pump  (Read 2502 times) previous topic - next topic

Re: Fresh Water Pump

Reply #40 –
Scale forms on heat exchangers at the hottest spot, if the aquahot has a spiral coil you can sometimes shock the scale off by cycling between full hot and full cold as the extreme expansion by the copper coil tends to break the scale off. Velocity is your friend when it comes to cleaning out pipe debris or scale, the more the better. Connect to elevated city pressure water, remove faucet airaters open all faucet valves, then open valves individually whether hot or cold and let it run a minute. Repeat as necessary to maintain maximum velocity in each pipe system, and the common maniblock with everything full on. Pump is to tiny to flush.

Re: Fresh Water Pump

Reply #41 –
Quote from: Old phart phred –
Scale forms on heat exchangers at the hottest spot, if the aquahot has a spiral coil you can sometimes shock the scale off by cycling between full hot and full cold as the extreme expansion by the copper coil tends to break the scale off. Velocity is your friend when it comes to cleaning out pipe debris or scale, the more the better. Connect to elevated city pressure water, remove faucet airaters open all faucet valves, then open valves individually whether hot or cold and let it run a minute. Repeat as necessary to maintain maximum velocity in each pipe system, and the common maniblock with everything full on. Pump is to tiny to flush.
Only the hot water goes around the coolant tank, no flame involved. I have seen posts on using vinegar to clean out the hot water lines on Aqua Hot systems.

Re: Fresh Water Pump

Reply #42 –
Flame or not scale forms, vinegar is a good yearly treatment.

Re: Fresh Water Pump

Reply #43 –
Replaced my leaking Sureflow with a new one
Brand: SHURFLO
4.6 out of 5 stars  3,504 Reviews
Shurflo 2088-554-144 Fresh Water Pump, 12 Volts, 3.5 Gallons Per Minute, 45 Psi

After a day or two of normal ops, it seemed to develope some sort of hydraulic lock and no flow, pump not running...bled the air precharge off the accumulator, and now ops normal...previous pump no back flow check valve, this new pump has one,

Any ideas? Ditch the accumulator?
 

Re: Fresh Water Pump

Reply #44 –
I like having the accumulator tank which works fine with my pump.  I would ditch the check valve or pump were it my choice.  All the best making your decision.