[jonny thompson]

Hi what the best number to run put this on, does running it on 99 do any harm bar the water flying out for the first few seconds

[Don Kee]

By the sounds of it, if you have ‘99’ as a potential setting then you have the type of controller that you can auto calibrate (spring)

Pull out some hose, connct your pole and extend it and run your water.
Whilst the water is running, go into calibration mode on your controller and scroll all the way down until you see ‘cal’ and then hit enter.
At first it’ll say ‘99’ but after a few seconds it’ll settle on a number.
Hit enter again and jobs a good ‘un

Apart from having it on 99 being totally overkill and needless (especially this time of year) you’ll just end up wearing down connectors and pumps (at best) or at worst your connectors will blow and pumps will prematurely fail. (Because you bypass the pressure switch with a controller, in effect running it 99 calibration is like having your pressure switch at full wack. Flow is different to pressure)

[Spruce]

Hi what the best number to run put this on, does running it on 99 do any harm bar the water flying out for the first few seconds

If you follow the instructions it tells you to settle on a flow of 30 then get into the calibration setting. The controller will first register 99 and then settle down on a number between 30 and 70.

[dazmond]

i usually have my CAL at 30-35 and flow at 40-45.i find the pump shuts off within 5 seconds after turning off my pole tap and no sudden surge of water at brush end when i turn my pole tap back on....a nice happy medium....

sometimes on a cold morning i have to ramp up the CAL to 45-50 to get the pump to kick in but once my hose and water heats up(by the time i get to my first job)i turn it back down to 30-35 or else the pump runs on for 20+seconds! (building up too much pressure!)....you dont want that......

[Ian Sheppard]

Morning guys thank you for your comments which are spot on as per usual. 

Johnny to add to the above, there is no ideal calibration value as it will vary slightly system to system. The higher your flow rate the higher the calibration will be.  As per the above during auto calibration the controller will either display a static value of 99 (V9 series) or flash C99 and Cal (V11 series) at the end of the calibration a value will be displayed and generally this will fall somewhere between 30 - 55.

I would agree with Don that running at 99 is over kill. This is because there is  maximum capacity that the hose can carry, beyond this no matter how much harder the pump is driven flow will not increase.

A suggestion is to find the flow that works bests for you then calibrate based on that flow rate. The hose/pole should be connected and if you can safely stand the pole up Or extend it a a little. This will help you get the system set the way you want it.

On average I would say most run flow somewhere between 30 & 60 but running up to 70-80 is within the range of the controller/pump but the higher harder the pump works the more current is drawn and the higher the pressure. 

Interestingly high pressure does not equate to high flow, this is because of the resistance created by the hose wall and limit of hose capacity.

[NWH]

Are you using enough water Daz that setting is and would be way to low for me I have mine between 75-85 no need to rinse hardly at all.

[dazmond]

Are you using enough water Daz that setting is and would be way to low for me I have mine between 75-85 no need to rinse hardly at all.

its gushing out at 45 on my  FLO controller nigel(liquid logic housed in my diesel heater).....

[Shrek]

Are you using enough water Daz that setting is and would be way to low for me I have mine between 75-85 no need to rinse hardly at all.

Me too - I have mine on 70

[jonny thompson]

This might sound a silly question but if you has the pump say set on 30 would the water flow be stronger with a higher callabration reading

[Bungle]

This might sound a silly question but if you has the pump say set on 30 would the water flow be stronger with a higher callabration reading

When I saw you last your water was p755ing out the brush. Thought to myself that you must be using a flow rate of 99. Do you use it on 30 John?

[jonny thompson]

25-30

[JandS]

Calibration on 45 flow on 60.
Was told when I bought the set up from PF to run cal at 45 then in Winter ramp it up to 50/55 if needed.

[Stoots]

Bin the controller and just run pump straight through

pointless contraptions.

[Ian Sheppard]

This might sound a silly question but if you has the pump say set on 30 would the water flow be stronger with a higher callabration reading

Interesting question Jonny.  Calibration allows the controller to see what the base pressure and current draw of the pump is when in open flow. Stopping the flow (closing a tap) causes both pressure and current drawn to increase, It is this change the controller detects and then drops the pump into DE. The higher the calibration the slower the controller is to DE the pump. Calibration is not impacting on the flow rate itself just how quickly the pump is stopped.
As flow rate is increased and the pump draws more current the calibration value will also be higher due to the higher base line of current/pressure in open flow.  Calibration can be carried out at any flow rate, the reason for using 30 in the guide allows us to give a common start point for auto cal.  So If a higher flow rate is used most of the time EG 45 then I would suggest setting that figure before going through auto cal. As a general rule of thumb Cak value will fall somewhere between 25 and 55 in a WFP system.