ShurFlo 5.7
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12-10-2008, 15:58
Post: #1
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ShurFlo 5.7
Hi folks,
I've got a problem with my relatively new ShurFlo 5.7 water pump. ShurFlo doesn't know what to tell me, other than to send it back to them, but before I do I'd like to see if anyone here has experienced similar behavior. The pump runs for about 30 seconds, then cuts out for a couple of seconds as if it's reached it's target pressure despite my faucet being wide open. Then it runs for 5-10 seconds, cuts out, and repeats this behavior indefinitely. If I open more faucets, I can hear the pump boost it's operating speed and it runs slightly longer between cutting out. After a few minutes of this on & off behavior, the stops become more abrupt and I can hear a relay inside the pump flicking off during each cut. Anyway, I'm assuming the pump is faulty and will be returning it to ShurFlo, but I did want to ask here first. I thought these pumps were supposed to adjust their speed in real time to deliver just the amount of water needed, not shut down entirely? My intention is to buy a new one right now and keep this one as a spare after ShurFlo replaces it, but I'm also concerned of the remote possibility I bought too much pump for my coach's plumbing system and a new one won't behave any better. What do you think? -Ryan '86 PT-40 8V92 |
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12-10-2008, 16:29
Post: #2
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ShurFlo 5.7
Hi Ryan, What they didn't tell is that they've had a some problems with these pumps. In all capacities. I am on my 3rd 4.0 model in less than 6 months. All of them start & then stop with no valve shut off. They just quit. There is an adjustment in the pressure sensitive switch but they won't tell me how to adjust it. They just say to send ot back to them for a replacement. Best of luck with yours. Terry Terry Neal |
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12-10-2008, 17:16
Post: #3
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ShurFlo 5.7
wonder if it is delivery restriction issue? or air cavitating the
pump on supply side. if it acts diff with varing levels in the pot tank, could prove delivery issue ???? is there a backflow valve or ball in the end of the pickup???? GregoryO'Connor ofTim&Greg --- In WanderlodgeForum@yahoogroups.com, "Ryan Wright" > > Hi folks, > > I've got a problem with my relatively new ShurFlo 5.7 water pump. > ShurFlo doesn't know what to tell me, other than to send it back to > them, but before I do I'd like to see if anyone here has experienced > similar behavior. > > The pump runs for about 30 seconds, then cuts out for a couple of > seconds as if it's reached it's target pressure despite my faucet > being wide open. Then it runs for 5-10 seconds, cuts out, and repeats > this behavior indefinitely. If I open more faucets, I can hear the > pump boost it's operating speed and it runs slightly longer between > cutting out. After a few minutes of this on & off behavior, the stops > become more abrupt and I can hear a relay inside the pump flicking off > during each cut. > > Anyway, I'm assuming the pump is faulty and will be returning it to > ShurFlo, but I did want to ask here first. I thought these pumps were > supposed to adjust their speed in real time to deliver just the amount > of water needed, not shut down entirely? My intention is to buy a new > one right now and keep this one as a spare after ShurFlo replaces it, > but I'm also concerned of the remote possibility I bought too much > pump for my coach's plumbing system and a new one won't behave any > better. What do you think? > > -Ryan > '86 PT-40 8V92 > |
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12-10-2008, 17:36
Post: #4
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ShurFlo 5.7
Thanks Terry. That's very frustrating - us owners are out the $20 in
fees to ship the darn thing every time. And after 3 years of this game the warranty expires and I guess we're just SOL... Are there any equally nice pumps with the variable flow setup that actually last? I can tell you this much... I'm buying a second pump before I ship this one back, and putting valves in and a pump selection switch. So the next time a pump dies while I'm trying to take a shower, I can flip a switch and the hot backup pump will roar to life and keep me going. -Ryan '86 PT-40 8V92 On Wed, Dec 10, 2008 at 8:29 PM, Terry Neal > Hi Ryan, > > What they didn't tell is that they've had a some problems with these pumps. > In all capacities. I am on my 3rd 4.0 model in less than 6 months. All of > them start & then stop with no valve shut off. They just quit. There is an > adjustment in the pressure sensitive switch but they won't tell me how to > adjust it. They just say to send ot back to them for a replacement. > > Best of luck with yours. > Terry > > Terry Neal > Bozeman, MT > 82PT40 6V92TA > 74FC34 6V53T > > > Ryan Wright wrote: > > Hi folks, > > I've got a problem with my relatively new ShurFlo 5.7 water pump. > ShurFlo doesn't know what to tell me, other than to send it back to > them, but before I do I'd like to see if anyone here has experienced > similar behavior. > > The pump runs for about 30 seconds, then cuts out for a couple of > seconds as if it's reached it's target pressure despite my faucet > being wide open. Then it runs for 5-10 seconds, cuts out, and repeats > this behavior indefinitely. If I open more faucets, I can hear the > pump boost it's operating speed and it runs slightly longer between > cutting out. After a few minutes of this on & off behavior, the stops > become more abrupt and I can hear a relay inside the pump flicking off > during each cut. > > Anyway, I'm assuming the pump is faulty and will be returning it to > ShurFlo, but I did want to ask here first. I thought these pumps were > supposed to adjust their speed in real time to deliver just the amount > of water needed, not shut down entirely? My intention is to buy a new > one right now and keep this one as a spare after ShurFlo replaces it, > but I'm also concerned of the remote possibility I bought too much > pump for my coach's plumbing system and a new one won't behave any > better. What do you think? > > -Ryan > '86 PT-40 8V92 > > |
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12-10-2008, 18:33
Post: #5
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ShurFlo 5.7
Ryan - We've been through two 4.0 pumps and a 5.7, similar problems.
Shurflo sent us new pumps but it turned out we had two problems with the pumps. First, the 4.0 Shurflo pumps ran as you described. Second, The 5.7 had problems AND it drew more power than our bus was designed for. The BB pump breaker was 8 amps while the 5.7 needs 10 amps. I had to install a bigger breaker and go up one wire size. Before returning the pump, do this: Put a volt meter on the power lead from the bus at the pump. Run the pump and note the voltage. If the voltage goes up as the pump stops, return the pump. If the voltage goes down as the pump stops, look for a problem between the battery and the pump (breaker, wiring, any pump control devices installed by BB). After three Smart Sensor pumps we had Shurflo send us the non- electronic version of the 5.7 (it is sold as a marine wash-down pump) and used their big stainless accumulator tank. Works great. The pump starts when the accumulator is down rather than every time you open a fawcett. Bob Griesel '84 FC31 WLII WA --- In WanderlodgeForum@yahoogroups.com, "Ryan Wright" > > Hi folks, > > I've got a problem with my relatively new ShurFlo 5.7 water pump. > ShurFlo doesn't know what to tell me, other than to send it back to > them, but before I do I'd like to see if anyone here has experienced > similar behavior. > > The pump runs for about 30 seconds, then cuts out for a couple of > seconds as if it's reached it's target pressure despite my faucet > being wide open. Then it runs for 5-10 seconds, cuts out, and repeats > this behavior indefinitely. If I open more faucets, I can hear the > pump boost it's operating speed and it runs slightly longer between > cutting out. After a few minutes of this on & off behavior, the stops > become more abrupt and I can hear a relay inside the pump flicking off > during each cut. > > Anyway, I'm assuming the pump is faulty and will be returning it to > ShurFlo, but I did want to ask here first. I thought these pumps were > supposed to adjust their speed in real time to deliver just the amount > of water needed, not shut down entirely? My intention is to buy a new > one right now and keep this one as a spare after ShurFlo replaces it, > but I'm also concerned of the remote possibility I bought too much > pump for my coach's plumbing system and a new one won't behave any > better. What do you think? > > -Ryan > '86 PT-40 8V92 > |
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12-10-2008, 18:38
Post: #6
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ShurFlo 5.7
-I've heard people say the pumps with the BELT are worthless, but I
sure do like mine...been working sinc 1990! Regards, Hank 90SP36 -- In WanderlodgeForum@yahoogroups.com, Terry Neal > > Hi Ryan, > > What they didn't tell is that they've had a some problems with these > pumps. In all capacities. I am on my 3rd 4.0 model in less than 6 > months. All of them start & then stop with no valve shut off. They > just quit. There is an adjustment in the pressure sensitive switch but > they won't tell me how to adjust it. They just say to send ot back to > them for a replacement. > > Best of luck with yours. > Terry > > Terry Neal > Bozeman, MT > 82PT40 6V92TA > 74FC34 6V53T > > > > Ryan Wright wrote: > > > Hi folks, > > > > I've got a problem with my relatively new ShurFlo 5.7 water pump. > > ShurFlo doesn't know what to tell me, other than to send it back to > > them, but before I do I'd like to see if anyone here has experienced > > similar behavior. > > > > The pump runs for about 30 seconds, then cuts out for a couple of > > seconds as if it's reached it's target pressure despite my faucet > > being wide open. Then it runs for 5-10 seconds, cuts out, and repeats > > this behavior indefinitely. If I open more faucets, I can hear the > > pump boost it's operating speed and it runs slightly longer between > > cutting out. After a few minutes of this on & off behavior, the stops > > become more abrupt and I can hear a relay inside the pump flicking off > > during each cut. > > > > Anyway, I'm assuming the pump is faulty and will be returning it to > > ShurFlo, but I did want to ask here first. I thought these pumps were > > supposed to adjust their speed in real time to deliver just the amount > > of water needed, not shut down entirely? My intention is to buy a new > > one right now and keep this one as a spare after ShurFlo replaces it, > > but I'm also concerned of the remote possibility I bought too much > > pump for my coach's plumbing system and a new one won't behave any > > better. What do you think? > > > > -Ryan > > '86 PT-40 8V92 > > > > > |
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12-10-2008, 18:40
Post: #7
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ShurFlo 5.7
The pressure adjustment is the silver phillips head screw in the
center of the pump housing dome. Tighen for higher pressure, loosen for lower pressure. Its a simple spring-over setup. The screw sets preload on the spring. The pump is designed for a specific pressure range so it would be good to use a pressure guage and not get too far off the factory specification. Bob Griesel '84 FC31 WLII WA --- In WanderlodgeForum@yahoogroups.com, Terry Neal > > Hi Ryan, > > What they didn't tell is that they've had a some problems with these > pumps. In all capacities. I am on my 3rd 4.0 model in less than 6 > months. All of them start & then stop with no valve shut off. They > just quit. There is an adjustment in the pressure sensitive switch but > they won't tell me how to adjust it. They just say to send ot back to > them for a replacement. > > Best of luck with yours. > Terry > > Terry Neal > Bozeman, MT > 82PT40 6V92TA > 74FC34 6V53T > > > > Ryan Wright wrote: > > > Hi folks, > > > > I've got a problem with my relatively new ShurFlo 5.7 water pump. > > ShurFlo doesn't know what to tell me, other than to send it back to > > them, but before I do I'd like to see if anyone here has experienced > > similar behavior. > > > > The pump runs for about 30 seconds, then cuts out for a couple of > > seconds as if it's reached it's target pressure despite my faucet > > being wide open. Then it runs for 5-10 seconds, cuts out, and repeats > > this behavior indefinitely. If I open more faucets, I can hear the > > pump boost it's operating speed and it runs slightly longer between > > cutting out. After a few minutes of this on & off behavior, the stops > > become more abrupt and I can hear a relay inside the pump flicking off > > during each cut. > > > > Anyway, I'm assuming the pump is faulty and will be returning it to > > ShurFlo, but I did want to ask here first. I thought these pumps were > > supposed to adjust their speed in real time to deliver just the amount > > of water needed, not shut down entirely? My intention is to buy a new > > one right now and keep this one as a spare after ShurFlo replaces it, > > but I'm also concerned of the remote possibility I bought too much > > pump for my coach's plumbing system and a new one won't behave any > > better. What do you think? > > > > -Ryan > > '86 PT-40 8V92 > > > > > |
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12-10-2008, 19:33
Post: #8
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ShurFlo 5.7
Have a look at aquajet pumps then give me a call
Stephen 77fc35 dupreeproducts.com --- In WanderlodgeForum@yahoogroups.com, Terry Neal > > Hi Ryan, > > What they didn't tell is that they've had a some problems with these > pumps. In all capacities. I am on my 3rd 4.0 model in less than 6 > months. All of them start & then stop with no valve shut off. They > just quit. There is an adjustment in the pressure sensitive switch but > they won't tell me how to adjust it. They just say to send ot back to > them for a replacement. > > Best of luck with yours. > Terry > > Terry Neal > Bozeman, MT > 82PT40 6V92TA > 74FC34 6V53T > > > > Ryan Wright wrote: > > > Hi folks, > > > > I've got a problem with my relatively new ShurFlo 5.7 water pump. > > ShurFlo doesn't know what to tell me, other than to send it back to > > them, but before I do I'd like to see if anyone here has experienced > > similar behavior. > > > > The pump runs for about 30 seconds, then cuts out for a couple of > > seconds as if it's reached it's target pressure despite my faucet > > being wide open. Then it runs for 5-10 seconds, cuts out, and repeats > > this behavior indefinitely. If I open more faucets, I can hear the > > pump boost it's operating speed and it runs slightly longer between > > cutting out. After a few minutes of this on & off behavior, the stops > > become more abrupt and I can hear a relay inside the pump flicking off > > during each cut. > > > > Anyway, I'm assuming the pump is faulty and will be returning it to > > ShurFlo, but I did want to ask here first. I thought these pumps were > > supposed to adjust their speed in real time to deliver just the amount > > of water needed, not shut down entirely? My intention is to buy a new > > one right now and keep this one as a spare after ShurFlo replaces it, > > but I'm also concerned of the remote possibility I bought too much > > pump for my coach's plumbing system and a new one won't behave any > > better. What do you think? > > > > -Ryan > > '86 PT-40 8V92 > > > > > |
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12-11-2008, 02:36
Post: #9
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ShurFlo 5.7
Sadly, I'm on my second one too. The later pumps, after 9/2006 have a pressure adjustment screw. There's a cover on the end of the pump, the cover will have 5 screws. The center screw is either philips or torx. That screw adjusts the internal pressure sensor. If your cover only has 4 screws, then you have an old pump, and it's not adjustable. My first pump exhibited the symptoms Ryan describes, I was able to adjust the pressure to cure the problem, but the pump didn't last long after that. My second pump has given good service so far (slightly over year so far, yippee). David Brady '02 LXi, NC Stephen Birtles wrote:
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12-11-2008, 05:44
Post: #10
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ShurFlo 5.7
Sounds like the pressure sensor in the unit is faulty. I don't know if there's a field repair possible -- but ShurFlo will probably replace the pump under warranty.
Pete Masterson '95 Blue Bird Wanderlodge WBDA 42 El Sobrante CA "aeonix1@mac.com" On Dec 10, 2008, at 7:58 PM, Ryan Wright wrote:
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