Installing a new SureFlo water pump...

[Leroy Eckert]

On my coach it is under the bed. Leroy Eckert 1990 WB-40 Royale Dahlonega, GA Smoke N Mirrors --- On Wed, 7/2/08, Scott Forman <scottforman75@...> wrote: From: Scott Forman <scottforman75@...> Subject: [WanderlodgeForum] Re: Installing a new SureFlo water pump... To: WanderlodgeForum@yahoogroups.com Date: Wednesday, July 2, 2008, 7:37 PM Where is the pressure tank? Scott Forman 86 PT38 Memphis --- In "WanderlodgeForum%40yahoogroups.com", "Ryan Wright" wrote: > > Thank you for the responses. I ordered the 5.7 from pplmotorhomes, and > the screen/filter for it. Look forward to installing this. I'm going > to go through and tighten any hose clamps I can find before > installation, just to be safe. > > I do think I'll keep the pressure tank. I usually keep the pump off, > only turning it on when necessary. The pressure tank allows me to wash > my hands and flush the toilet a couple of times without turning the > pump on, which is nice, especially in the middle of the night. > > Appreciate the replies! > > -Ryan > '86 PT-40 8V92 >

[Pete Masterson]

It's actually an "accumulator tank" that accumulates pressure for the water system. It's often located near the main water pump. It will look like a canister of about 6 to 8" in diameter and perhaps 12 to 14" tall. Mine was painted blue. There will be a schrader valve on one end. This allows you to pressurize the diaphragm, if it loses it's 'charge.' Normally you'd fill it with air to about the expected water pressure in the system, that puts the rubber diaphragm at the minimum stretch. As pressure drops, the diaphragm pushes on the water side of the accumulator tank (giving you water pressure). As water pressure is recovered by the pump, it will push the diaphragm back against the trapped air.

Almost all water pump systems (home or RV) have them (sized for the water demand). The usual maintenance issue is that the air pressure has been lost (just put a compressor on it and pump it back up) or the diaphragm has failed (in which case the accumulator tank must be replaced).

Pete Masterson

'95 Blue Bird Wanderlodge WBDA 42

El Sobrante CA

"aeonix1@mac.com"

On Jul 2, 2008, at 4:37 PM, Scott Forman wrote:

Where is the pressure tank?

Scott Forman

86 PT38

Memphis

--- In "WanderlodgeForum@yahoogroups.com", "Ryan Wright" 

wrote:

Thank you for the responses. I ordered the 5.7 from pplmotorhomes, and

the screen/filter for it. Look forward to installing this. I'm going

to go through and tighten any hose clamps I can find before

installation, just to be safe.

I do think I'll keep the pressure tank. I usually keep the pump off,

only turning it on when necessary. The pressure tank allows me to wash

my hands and flush the toilet a couple of times without turning the

pump on, which is nice, especially in the middle of the night.

Appreciate the replies!

-Ryan

'86 PT-40 8V92

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[Al]

Is it marked on the accumulator how much air pressure one is supposed
to put into the unit?

Al Johnson
'96 BMC B100
Mandeville, Louisiana

--- In WanderlodgeForum@yahoogroups.com, Pete Masterson
wrote:
>
> It's actually an "accumulator tank" that accumulates pressure for
the
> water system. It's often located near the main water pump. It will
> look like a canister of about 6 to 8" in diameter and perhaps 12
to
> 14" tall. Mine was painted blue. There will be a schrader valve on
> one end. This allows you to pressurize the diaphragm, if it loses
> it's 'charge.' Normally you'd fill it with air to about the
expected
> water pressure in the system, that puts the rubber diaphragm at
the
> minimum stretch. As pressure drops, the diaphragm pushes on the
water
> side of the accumulator tank (giving you water pressure). As water
> pressure is recovered by the pump, it will push the diaphragm back
> against the trapped air.
>
> Almost all water pump systems (home or RV) have them (sized for
the
> water demand). The usual maintenance issue is that the air
pressure
> has been lost (just put a compressor on it and pump it back up) or
> the diaphragm has failed (in which case the accumulator tank must
be
> replaced).
>
> Pete Masterson
> '95 Blue Bird Wanderlodge WBDA 42
> El Sobrante CA
> aeonix1@...
>
>
>
> On Jul 2, 2008, at 4:37 PM, Scott Forman wrote:
>
> > Where is the pressure tank?
> >
> > Scott Forman
> > 86 PT38
> > Memphis
> >
> > --- In WanderlodgeForum@yahoogroups.com, "Ryan Wright"
> > wrote:
> >>
> >> Thank you for the responses. I ordered the 5.7 from
pplmotorhomes,
> >> and
> >> the screen/filter for it. Look forward to installing this. I'm
going
> >> to go through and tighten any hose clamps I can find before
> >> installation, just to be safe.
> >>
> >> I do think I'll keep the pressure tank. I usually keep the pump
off,
> >> only turning it on when necessary. The pressure tank allows me
to
> >> wash
> >> my hands and flush the toilet a couple of times without turning
the
> >> pump on, which is nice, especially in the middle of the night.
> >>
> >> Appreciate the replies!
> >>
> >> -Ryan
> >> '86 PT-40 8V92
> >>
> >
> >
> >
> > ------------------------------------
> >
> > Yahoo! Groups Links
> >
> >
> >
>

[Ryan Wright]

On Wed, Jul 2, 2008 at 5:27 PM, Pete Masterson wrote:
> It's actually an "accumulator tank" that accumulates pressure

What's the difference? I've always heard it called a "pressure tank"
... we use them on wells, in water filtration systems, etc. Not that
the name matters. I Google'd both of them and got plenty of results
for the same products.

Scott, mine is under the driver's side bed, toward the front of the coach.

-Ryan

[Ryan Wright]

Kevin,

Thanks for the info. I'm looking forward to receiving this new pump.
Mine is the old belt driven style... and I do mean old; my '66 Travco
had the same darn pump and based on the looks of it, I'm guessing
that's what it came with. Pretty sure my Bird came with the same pump
way back in '86.

I always leave my water pump off unless I'm washing dishes or taking a
shower. Beyond that, I only turn it on for a few seconds to recharge
the pressure/accumulator tank when water flow slows down. I do this
for precisely the reason you mentioned... A couple of years ago,
before I bought my coach, I read a post (I think it was on this forum
even) about someone who came back to a flooded coach and a smoking,
almost but not quite on fire water pump that had been running dry for
God knows how long. I'd rather not deal with any of that and it's easy
enough to flip the water on and off as I need it.

-Ryan
'86 PT-40 8V92

On Wed, Jul 2, 2008 at 6:44 PM, wrote:
> Ryan,
>
> I installed the shurflo a few years ago, after my accumulator tank failed.
> I eliminated the tank, and went with just the pump. Works great. The pump
> speeds up when the demand increases, and it is sure nice using the shower
> with the improved pressure. You use more water just because it comes out
> faster, but according to my girls, it's a lot easier to get the shampoo out
> of their hair so it probably about the same water usage. All the tank does
> is maintain some pressure in the lines so the pump doesn't run for just a
> momentary demand of water. Since the shurflo is a variable speed motor, you
> won't notice a difference in sound from the original (maybe even a little
> quieter)
>
> Just one note....I had a fitting pop off the pressure side of the pump while
> I was driving, and in a short period of time that ever so efficient pump
> almost drained my fresh water tank into the area where the pump and
> accumulator tank is located. It was a faulty shurflo clamp....(taught me to
> keep the pump switch "Off")
>
> Kevin McKeown
> Yorba Linda, CA
> 1986 38' PT (For sale)
>
>
> ________________________________
> Gas prices getting you down? Search AOL Autos for fuel-efficient used cars.
>

[Leroy A. Eckert]

--- In WanderlodgeForum@yahoogroups.com, "Ryan Wright"
wrote:

Does this look like your pump? If so it is used in a million boats and
in our Wanderlodge coach. It can run for days without water and not
get hot. I just wanted to defend it so it does not get a bad name.
http://www.wmjmarine.com/itt-369001000.html It has been around for
years, long before computers. Still pumping.

Leroy Eckert
1990 WB-40 Smoke N Mirrors
Dahlonega, GA
>
> Kevin,
>
> Thanks for the info. I'm looking forward to receiving this new pump.
> Mine is the old belt driven style... and I do mean old; my '66 Travco
> had the same darn pump and based on the looks of it, I'm guessing
> that's what it came with. Pretty sure my Bird came with the same pump
> way back in '86.
>
> I always leave my water pump off unless I'm washing dishes or taking a
> shower. Beyond that, I only turn it on for a few seconds to recharge
> the pressure/accumulator tank when water flow slows down. I do this
> for precisely the reason you mentioned... A couple of years ago,
> before I bought my coach, I read a post (I think it was on this forum
> even) about someone who came back to a flooded coach and a smoking,
> almost but not quite on fire water pump that had been running dry for
> God knows how long. I'd rather not deal with any of that and it's easy
> enough to flip the water on and off as I need it.
>
> -Ryan
> '86 PT-40 8V92
>
> On Wed, Jul 2, 2008 at 6:44 PM, wrote:
> > Ryan,
> >
> > I installed the shurflo a few years ago, after my accumulator tank
failed.
> > I eliminated the tank, and went with just the pump. Works great.
The pump
> > speeds up when the demand increases, and it is sure nice using the
shower
> > with the improved pressure. You use more water just because it
comes out
> > faster, but according to my girls, it's a lot easier to get the
shampoo out
> > of their hair so it probably about the same water usage. All the
tank does
> > is maintain some pressure in the lines so the pump doesn't run for
just a
> > momentary demand of water. Since the shurflo is a variable speed
motor, you
> > won't notice a difference in sound from the original (maybe even a
little
> > quieter)
> >
> > Just one note....I had a fitting pop off the pressure side of the
pump while
> > I was driving, and in a short period of time that ever so
efficient pump
> > almost drained my fresh water tank into the area where the pump and
> > accumulator tank is located. It was a faulty shurflo
clamp....(taught me to
> > keep the pump switch "Off")
> >
> > Kevin McKeown
> > Yorba Linda, CA
> > 1986 38' PT (For sale)
> >
> >
> > ________________________________
> > Gas prices getting you down? Search AOL Autos for fuel-efficient
used cars.
> >
>

[Leroy Eckert]

No one ever considers that. Leroy Eckert 1990 WB-40 Royale Dahlonega, GA --- On Wed, 7/2/08, erniecarpet@... wrote: From: erniecarpet@... Subject: Re: [WanderlodgeForum] Installing a new SureFlo water pump... To: WanderlodgeForum@yahoogroups.com Date: Wednesday, July 2, 2008, 10:05 PM One thing about the increased gpm, is the extra flow into your gray tank. Might fill up too fast. Ernie Ekberg 83PT40 Livingston, Montana Gas prices getting you down? Search AOL Autos for fuel-efficient used cars.

[David Brady]

Ryan,



A call to Shurflo might be worth it regarding its use with the

pressure tank. The installation instructions are pretty clear

in that there shouldn't be any elbows, or other obstructions,

within x distance from the pump outlet. These kinds of

obstructions can reflect the water pressure tricking the pump

into thinking that the water line is pressurized (when it's actually

only the pressure in the pressurized tank). You may end up

with pressure oscillations if you keep the pressure tank. Give

it a try. If you have oscillations, then remove the pressure

tank.



David Brady

'02 LXi, NC



Ryan Wright wrote:

Thank you for the responses. I ordered the 5.7 from pplmotorhomes,
and

the screen/filter for it. Look forward to installing this. I'm going

to go through and tighten any hose clamps I can find before

installation, just to be safe.



I do think I'll keep the pressure tank. I usually keep the pump off,

only turning it on when necessary. The pressure tank allows me to wash

my hands and flush the toilet a couple of times without turning the

pump on, which is nice, especially in the middle of the night.



Appreciate the replies!



-Ryan

'86 PT-40 8V92

No virus found in this incoming message.

Checked by AVG. Version: 7.5.526 / Virus Database: 270.4.3/1529 - Release Date: 7/1/2008 7:23 PM

[Gregory OConnor]

One thing about pump ratings is the psi at a given gpm discharge.
shureflow seems to maintain sufficient psi at normal use. I fill the
fresh water tank and use the pump to pressurize the bus often while
camped with full hookups. Not hearing the pump run when all is quiet
indicates no leaks.

My 94 has two ShureFlow pumps I have the option of running both but
can only guess that that is to maintain a steady psi with higher
volumn flow. ( Like Ernie points out that is asking for a quick
depletion) I use one or the other to exersize both pumps
independently(choice is an "A-B-Both switch in the bathroom). One
thing to point out in this thread
XXXXXXXXXXXXXXXXXXXXX
The pumps have a built in backflow / checkvalve. that is; you can
not push water in the discharge side even with the pump off. if the
backflow craps out, pressurizing with city p.o.c. will send water
past the pump and overflow the Potable tank. If you remove a pump
for repair it is best to plug both lines (atleast the discharge) and
not loop them with a pipe splice.

GregoryO'Connor
94ptRomolandCa

[Pete Masterson]

No. It is apparently assumed that you'll know what to do. (These are mostly installed by professional plumbers.) The only instructions I found in a brief online search stated: The accumulator tank is precharged at 0.8 bar. If your pump's cut-in pressure is different you may have to customize the tank to best fit your installation. It goes on to explain how to check and adjust the pressure in the tank. See:

<http://www.johnson-pump.com/JPMarine/pro...cctank.pdf>

I note that this appears to be from a Swedish company and English is not the primary language. I leave it to you to figure out what 0.8 bar is in psi. English instructions are on page 4 of this pdf.

Pete Masterson

'95 Blue Bird Wanderlodge WBDA 42

El Sobrante CA

"aeonix1@mac.com"

On Jul 2, 2008, at 5:36 PM, Al wrote:

Is it marked on the accumulator how much air pressure one is supposed 

to put into the unit?

Al Johnson

'96 BMC B100

Mandeville, Louisiana

--- In "WanderlodgeForum@yahoogroups.com", Pete Masterson  

wrote:

It's actually an "accumulator tank" that accumulates pressure for 

the  

water system. It's often located near the main water pump. It will  

look like a canister of about 6 to 8" in diameter and perhaps 12 

to  

14" tall. Mine was painted blue. There will be a schrader valve on  

one end. This allows you to pressurize the diaphragm, if it loses  

it's 'charge.' Normally you'd fill it with air to about the 

expected  

water pressure in the system, that puts the rubber diaphragm at 

the  

minimum stretch. As pressure drops, the diaphragm pushes on the 

water  

side of the accumulator tank (giving you water pressure). As water  

pressure is recovered by the pump, it will push the diaphragm back  

against the trapped air.

Almost all water pump systems (home or RV) have them (sized for 

the  

water demand). The usual maintenance issue is that the air 

pressure  

has been lost (just put a compressor on it and pump it back up) or  

the diaphragm has failed (in which case the accumulator tank must 

be  

replaced).

Pete Masterson

'95 Blue Bird Wanderlodge WBDA 42

El Sobrante CA

aeonix1@...

On Jul 2, 2008, at 4:37 PM, Scott Forman wrote:

Where is the pressure tank?

Scott Forman

86 PT38

Memphis

--- In "WanderlodgeForum@yahoogroups.com", "Ryan Wright"

wrote:

Thank you for the responses. I ordered the 5.7 from 

pplmotorhomes,  

and

the screen/filter for it. Look forward to installing this. I'm 

going

to go through and tighten any hose clamps I can find before

installation, just to be safe.

I do think I'll keep the pressure tank. I usually keep the pump 

off,

only turning it on when necessary. The pressure tank allows me 

to  

wash

my hands and flush the toilet a couple of times without turning 

the

pump on, which is nice, especially in the middle of the night.

Appreciate the replies!

-Ryan

'86 PT-40 8V92

------------------------------------

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