Installing a new SureFlo water pump...

[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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