[Andrew44]

Went back to van and saw a pin prick leak shooting a fine jet of water coming from 2mtr hose connecting hose reel to external port (standard 1/2 inch bore).  The hose in parts was blown up like a balloon (sausage shape not round!).  This pressue build up must have caused the pin prick leak but why did it happen?  The Flo contoller was working fine and cutting off when I stopped the water at pole end and there was no really difference in pressure from brush head - thats why I didn't notice any probs till I came back to van.

Any ideas why this happened and has anyone has this before.   The micro bore hose was fine.  The 2mtr 1/2 inch hose was rock sold as so much pressure in it.

[Steve_c]

Yep, a cat got in the van and bit through the hose.

[Andrew44]

This didn't seem like the hose was pieced but split due to pressure build-up at it was like a sausage in parts. Any reasons how the pressure was built up?

[Blue Frog Systems]

What hose is it ? cheap thin hose can do what you stated when put under pressure. It might not happen straight away, but the constant pressure puts strain on the hose.

If i was you i would get some re-inforced hose

[Erithwc]

if your flow controller finds a dead end  ( DE )  it will test to see if their is still a dead end after a few seconds and after a few minutes the pressure builds up  

[Andrew44]

What hose is it ? cheap thin hose can do what you stated when put under pressure. It might not happen straight away, but the constant pressure puts strain on the hose.

If i was you i would get some re-inforced hose

It was standard blue hose that was supplied by pure freedom.  I have now fitted silverline which I believe is better??

[Andrew44]

if your flow controller finds a dead end  ( DE )  it will test to see if their is still a dead end after a few seconds and after a few minutes the pressure builds up  

I think this may have been the problem.  I was doing other cleaning for some time and didn't use the wfp pole for an hour with pump on (obvioulsy DE reading was showing).  I've never had this problem before but never left the pump on de for so long.

Do you think that DE for an hour is the reason? Or is that a silly question    

[andyM]

I would of thought the small pinhole in the hose allowed to pump to continue intermittently cycling.
Although some water was escaping through the pinhole the pressure probably kept building up due to the intermittent cycling of the pump trying to push water through.
 

[Andrew44]

Yes, the pin hole was not letting enough water out (and pressure release) to stop the DE reading but I think Erithwc is right and the pressure built up because of the very long time I had it on DE combined with the poor quality hose.  this I think caused the hose to burst and created the pin prick hole.

Lesson learnt:  buy better quality hose and don't let pump recycle for a long time without using water : 

[Mike #1]

In DE the pump keeps retrying when really the pump should read PS which means pressure switch activated or pump disconnected , 

Although i have had previous chat regarding PS and DE surely the the controller should read PS when water is turned off via  inline tap ,      As when the pressure switch is working properly its job is  to shut down the pump to avoid the pump trying to restart in pulses and therefore over a long period of time damaging pump and controller , all in all prolonging the life of pump , controller and battery .


Just learning as i go with digital controller along with good  help and  good advice along the way .

                                                     MIKE

[Ian Sheppard]

The DE and PS messages refer to different things

Our Flo control is designed specifically to work with the pump pressure switch as it will act as extra protection on your system

DE (water flow off) this will show when you pinch the hose to stop flow. As mike says the control will retest every few seconds for DE this retest will run the pump for a fraction of a second.
Left in DE for such a long time (an hour) will mean the back pressure is likely to build up, for this reason we always advice the pump pressure switch is fitted as it will stop this very high pressure build up.
My advice would be if you are going to leave in DE for such long periods switch of the control.

The PS message will come up if the pump pressure switch is activated due to high pressure build up but not for the water flow stopping
If the pressure switch is not fitted the control will not display the PS message as there no PS to detect. So in short Dead ending the control may lead to the pump pressure switch activating......

- Not as a result of the water flow stopping but a build up in pressure
- PS will only activate if the pump pressure switch is fitted, as per our instructions

please see below


Messages
DE means the Dead End Detection has shut off the controller and pump.
This happens when the controller detects the water flow has stopped.
1) Check there are no air bubbles in the system. Run the pump to bleed air from the system
2) The hose has become disconnected or twisted
3) The water tank is empty
4) The auto calibration needs to be set
Adjust your flow setting carefully. Repeated false dead end detection indicates that the cal value should be increased (less sensitive)

Prolonged use of the control with high calibration may lead to damage to the control or system. Do not set the Cal too high. Setting it higher than necessary places extra strain on both the pump and controller in DE situation.
 



PS = Pressure Switch
The controller is telling you the pumps pressure switch has been operated due to a high build up of pressure in your system.
The controller is set to work with a pump up to 5.2 litres per minute and 100PSI although it will and can work at higher ranges.
Common causes for the pressure switch operating could be
- A restriction in the system
- Blocked or small water jets (recommended 2mm)
- Grit or dirt trapped in the system
- Air blockage
- Prolonged shut off of the water flow
In very rare cases if you have disconnected the pump pressure switch and are relying only on the controller to detect Dead End when the water flow has stopped, the following can occur 
- The controller will re-test the DE every few seconds
- the Pump appears to Cycle (start then stop)
- The system pressure may build up slightly
- There is a risk of a failure of your hose connections
- The Controller and pump are still drawing current
- Risk of damage to the pump and controller

We always recommend that the controller is operated with the pump pressure switch as it will give an additional back up and in the above example will avoid damage to your system as the pressure switch will cut out before dangerous high pressure builds

Please do let me know if you need more information on any of the above

[Andy Prittchard]

Too much to read, tbh.

[AS Window Cleaning]

The DE and PS messages refer to different things

Our Flo control is designed s...........


......


........... will avoid damage to your system as the pressure switch will cut out before dangerous high pressure builds

Please do let me know if you need more information on any of the above

lol...theres more??!

Nice comprehensive answer, if that didnt answer it, nout will!!