De setting

[Aqua]

So I switched back to my microbore hose as I find it so much nicer to use when though I just can't get the same pressure through it to the jets. I've tried putting the de setting on my spring controller up to 70 to try and improve this but still not great. But what I've noticed is when I switch the tap on the pole hose off the pressure switch stops the pump before the de does. Does this mean I've got it set too high or is it ok to use like this?

 

[Smurf]

Best to prime the pump again and recalabrate the controller then see it it works any better

 

[Aqua]

Did that mate put pressure and flow up to Max to get all air out. Should the pressure switch not come on before the de then?

 

[Smurf]

What pump are you using and what spring controller are you on about?

Do you have the pump pressure switched connected too?

 

[Aqua]

Is a shurflo pump and a digi controller. The pressure switch is connected.

If I calibrate the controller it usually comes up with a setting of about 48 but I like to set it higher for better rinsing but I just noticed if I go above about 65 the controller will flash ps and not de when I close the pole tap. Just wondered if that is normal when you increase it? Or is my pump faulty.

 

[Smurf]

Have you a spare pump to try to see if that one works ok?

 

[jimmyboots]

@Aqua Are you getting the DE calibration mixed up with the flow control? I have the Analogue control. so I just have the 2 seperate dials in front of me. To calibrate mine, I have to turn both dials on full, let the water flow, then turn the DE dial down until the flow stops. Then turn up slowly again until the flow starts again, and that is then calibrated. After this I can turn the flow dial up to full or right down to a trickle and the DE will stay the same.

With the digital are you sure you are not just altering the flow and not the DE.?

Also, if there is any air in the system the DE might not work right and the pressure builds to 100psi and PS kicks in.

Keep the pressure switch connected as it is a backup if the controller fails :thumbsup:

Have a look at this, spring on Youtube, see if there is any help there.

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[Smurf]

This vid may help on the cause of showing PS on the display.

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[Aqua]

Thanks for the replies guys. Yes that's the controller I have the digital one. I've watched the vids and it's OK I was calibrating the de correctly. Unfortunately I've not got a spare pump but is only 6 months old so should be ok. I just don't know what else I can do to get any air out that could be trapped anywhere still. Should I try disconnecting the pressure switch just out of interest?

If I set the de under 65 its fine. If I turn tap off the pump keeps running until it stops and controller displays de. But if I up it to 70 and turn tap off the pump runs then stops and displays ps instead. I wonder if something about my set up is causing air to get trapped somewhere.

 

[Smurf]

Did you have a look at the vid I posted for the reasons why PS comes up on the display?

 

[Smurf]

From the vid it say's

PS is displayed when the pump's pressure switch has been operated due to a high build up of pressure in your system

Common causes for the pressure switch to be operated are...

1. Restriction of water flow i.e from a twisted hose

2. Blocked or small water jets (we recommended jets no smaller than 2mm)

3. Air trapped in the system

4. Prolonged shut-off of water flow (note your controller does not activate the pump pressure switch)

 

[Smurf]

I have been told duff information regarding the pump pressure switch and using a digi controller as just have read through my instruction booklet that says "for absolute safety always wire through the pump pressure switch".

 

[Aqua]

I just thought if you set the de too high does it go beyond the point where the pressure switch is set to kick in? So basically the ps comes in before the de is reached. I mean is 70 high to have it set.

Because I was also looking at number 1 I mean as far as the pressure switch knows what's the difference between restricting the flow by twisting a hose or by turning the tap off?

 

[Smurf]

What you have the DE set at 70

 

[Aqua]

To get a decent pressure yeah I usually go 60 to 70 and the flow 70 . What do you set yours at?

 

[Smurf]

I still don't understand why you have your DE set so high.

 

[spruce]

What pump has Aqua got?

The Shurflo pump's pressure switch can be manually adjusted from 100psi down to around 65psi. If that adjustment has been altered then the pumps pressure switch will kick in earlier than the controller.

Aqua will probably need to get a pressure gauge onto the line to identify where the issue is.

@Smurf , the relationship between flow rate and pressure confuses many in all industries, none more so than the air compressor, airtools and spraygun sectors. Just because an air compressor with pump to 100 psi don't mean that it will supply enough air at that rate to drive a jack hammer.

I don't believe that the de settings on Spring Controllers are related to actual psi equivalents - they are just a range of amp draw divided into 100 sections which relate to a pressure.

 

[Aqua]

So am I confused then? I thought the higher you set the de the higher it allows the pump to get the system pressure before shutting it off?

 

[spruce]

So am I confused then? I thought the higher you set the de the higher it allows the pump to get the system pressure before shutting it off?

You aren't confused - this is correct.

If your manual pump pressure switch has been altered then this could be why the pump pressure switch cuts in before the electronic one on the controller does.

 

[Aqua]

Ok I will have to look into that then. The controller cuts in fine as long as the de is set no higher than 65 but any higher than that and the ps comes on first. I do wonder if there is some underlying problem with my system tho I was messing round with it all afternoon taking things out of the set up to try and improve the pressure. I think air is getting in somewhere and getting trapped although I can't see any leaks at all. I had it running and turned the flow right down to about 40 and suddenly tons of air bubbles were coming out for ages. Thanks for the help tho.

 

[jimmyboots]

I think maybe air is your problem too mate. Do you have a strainer on? maybe check if air is getting trapped in that? Also do you have any form of tap to stop air getting in if the water in the tank gets low and is sloshing around when you are driving?