Low Suction Through Vacuum Head

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floridapooltech
Swimming Pool Superstar
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Posts: 307
Joined: Wed 17 Feb, 2010 22:47
My Pool: License # CPO34-283076
Location: Tampa Bay, FL

Low Suction Through Vacuum Head

Postby floridapooltech » Mon 08 Aug, 2011 23:50

yambosha wrote:I just replace a motor and sand and now no water is circulating I've been fighting and working hard all summer and now the pool is clean but no water is circulating out of the jets or the skimmer the motor is working. What is it a leak from the skimmer to the pump


Is it 220v or 110? If you're using 110v power to the motor, did you check to make sure the wires were installed in the correct position? If they are backwards, the impeller will spin backwards causing you to have no suction and pressure at all.


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tdfuller
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Posts: 12
Joined: Tue 24 May, 2011 21:39
My Pool: in-ground, vinyl, 28000 gallons, one skimmer, DE filter FNS Plus 48 (Pentair)
Location: Charlotte

Low Suction Through Vacuum Head

Postby tdfuller » Sat 07 Jan, 2012 20:36

So a year later I am still trying to troubleshoot this issue that I first posted to create this thread - Low or no suction, only when trying to vacuum. Anybody know if CycoLac Ball Valves are prone to tiny leaks? My understanding is that a tiny leak won't show any effects during normal pool operation, but can during vacuuming.

My CycloVac ball valves is over 20 years old, but appear in decent if not good shape. The handles always stay in the same position. There is one large ribbed ring that appears to be for turning, but is on so tight, that my 7 feet, 295 pounds can't make it budge. It is also too large to get my adjustable wrench on it. However, just inside this large round ribbed ring, is a smaller, hex shaped connector, you can put an adjustable wrench on it. I have turned it about a half turn. I don't want to keep turning it to the right, b/c I am not exactly sure if that tightens it or might make a possible tiny leak there worse.
tdfuller
Pool Enthusiast
Pool Enthusiast
Posts: 12
Joined: Tue 24 May, 2011 21:39
My Pool: in-ground, vinyl, 28000 gallons, one skimmer, DE filter FNS Plus 48 (Pentair)
Location: Charlotte

Low Suction Through Vacuum Head

Postby tdfuller » Wed 11 Jan, 2012 19:26

Problem solved!!

After 9 months of frustration, it turns out, it was just a bad connection with the cuff at the end of the hose to the hose itself - the end going in to the skimmer. Ironically, this was the first thing I troubleshot last May. At that time, I brought a brand new pool hose (which includes new cuffs) from Leslie's. This did nothing to solve the low vac pressure problem. So, I returned that hose, and bought a new cuff, as my hose had about a 1/2" tear in the end of the cuff that goes attaches to the Hayward Skim-Vac which in turn goes on the skimmer basket. It turns out, that the new hose also was allowing a tiny amount of air in to the cuff, breaking or reducing the vacuum seal.

With the hose plugged directly in to the skimmer intake without the Hayward Skim-Vac, the cuff remains 100% below the water, eliminating any air leaks. Suction is awesome, and remains for the entirety of my 30-45 minute vacuum sessions.

So, I will either continue to direct connect, or attempt to cleanup, reconnect, and reseal the new hose cuff with alot more silicon!

It is funny, but for at least 5 years, my cuff never let air in at all.
Guest

Low Suction Through Vacuum Head

Postby Guest » Sun 12 May, 2013 03:11

I am having the same problem our pool guys said that its just alot of debris backed up. We have palm trees. He said where u in attach the vacuum hose inside to pool take that off and clean in there with a wire brush. We haven't tried it yet but are planning on doing this tomorrow. Hopefully we will see an improvement.
tdfuller
Pool Enthusiast
Pool Enthusiast
Posts: 12
Joined: Tue 24 May, 2011 21:39
My Pool: in-ground, vinyl, 28000 gallons, one skimmer, DE filter FNS Plus 48 (Pentair)
Location: Charlotte

Low Suction Through Vacuum Head

Postby tdfuller » Sun 12 May, 2013 11:50

Mine was a laugher. I paid $85 for a pool pro to come out. In the first 5 minutes he found the problem. This was over a year ago. With the suction plate on the end of the hose, it always raises the cuff of the hose just enough so that it is out of the water. But, for the first 10 years, this worked without causing suction to drop.

A slight, "break" - I won't even call it a crack - because it is far smaller than that - developed between the cuff and the hose. Even when I replaced the cuff with a new one, and glued it really well with the adhesive; apparently, it is tough to get a 100% airtight seal with the cuff and hose. AND... I actually bought a brand new hose from Leslie's. Same result! It would cause a lose of suction as well. This is what caused confusion and delays in me finding the source of the problem; believing the issue was not with the hose if the same loss of suction occurred with my old hose and old cuff, old hose with new cuff, and brand new hose!

Apparently, I was fortunate to have a hose with a 100% airtight cuff for many years, that eventually developed a slight air leak. The pool pro who found the problem, and he was the second pro, diagnosed it by removing and no longer using the suction skimmer plate, and instead removing the skimmer basket and hooking the hose directly in to the skimmer intake after filling the hose with water. Voila! The suction was strong and remained strong! The hose cuff was fully below the surface of the water; eliminating an entry way for air.

The downside to this method of not using the skimmer plate and removing the skimmer basket is that there is a small risk that I could suck a golf ball size piece of debris in to the plumbing with no skimmer basket protecting things, but, I don't have gumball trees and don't play golf. Plus, since I am manually vacuuming, I am always watching the bottom of the pool for what is sucked in to the vacuum head.

... Now, I have a Polaris 9300, and use it to vacuum the pool. But, I still retain my manual vacuum in case the pool gets trashed by a bad storm or if I need to clean the pool quickly.

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