[bobplum]

do you notice any difference in the results of cleaning if you use a low flow or  a high flow..and which do you think cleans better.
I am trying to see if its worth boosting the pressure and spend less time on the glass but achieve the same results all be it i will probably use more water

cheers
bob

[Peter Fogwill]

High flows better, and you shouldn't use more water unless you use too much.  If you double the flow, and on the glass half the time, then you will get the same or better results, and use exactly the same amount of water.  The only difference you will see is doing the work in just over half the time.
What you may notice for the first couple of cleans with the higher flow is some spotting due to the water getting into the nooks and crannies it doesn't normally get into.  Depends on a few things though.

[bobplum]

hi peter
what pressure do you use if cleaning

[DG Cleaning]

Can you alter the pressure on most of the pumps we use?
I would have thought its flow that makes the difference

[bobplum]

sorry mean flow

[Smudger]

I'll back Peter up all the way on this - when I went wfp nearly 4 years ago I looked at the 2 options high flow as used by Peter and low flow as used by Jeff I tried both ways for several weeks and the high flow won out easily - I got better cleans and in half the time it was taking with low flow.

I admire Jeff being able to  wash a whole office block with a tea spoon of water but logic and experience plus virtually no call backs for spotting issues means high flow works best for me and my team

Darran

[dave0123]

all depends what u call a high flow though    a high flow to you could be a low flow to someone else..


what do u call a high flow 1.5 litre per min? 2L or more?

[Mike #1]

High Flow for me at the moment is 23 on my flow controller my CAL is set at 21 , But i use 1mm Clarkes welding tips as pencil jets about £5.00 for 5 .

25-26 on big windows but then it is almost like using a pressure washer  . Mike

[Ian Sheppard]

Perhaps the question should be about Volume as opposed to fast or slow flow of water. A higher volume of water delivered to the glass with less speed particularly when rinsing would be useful. A fast flow of water hitting the glass may lead to water splashing and pulling dirt from above the rinse area. I can see how a higher water volume can be of benefit in terms of how quickly a window can be cleaned.

[Michael Peterson]

100 psi pump with no controller for me

[bobplum]

100 psi pump with no controller for me

SO IS IT RUNNING AT 100

[bobplum]

Perhaps the question should be about Volume as opposed to fast or slow flow of water. A higher volume of water delivered to the glass with less speed particularly when rinsing would be useful. A fast flow of water hitting the glass may lead to water splashing and pulling dirt from above the rinse area. I can see how a higher water volume can be of benefit in terms of how quickly a window can be cleaned.

so would you say a higher cal no and a lower psi number

[keyser soze]

i dont like it to high... the same as i dont like it too low... too high and you get spots from the nooks and crannies and too low theres not enough rate to get the dirt of the glass . ... its not all about POWERRRRRRR ....
fine line in my eyes

[Ian Sheppard]

Perhaps the question should be about Volume as opposed to fast or slow flow of water. A higher volume of water delivered to the glass with less speed particularly when rinsing would be useful. A fast flow of water hitting the glass may lead to water splashing and pulling dirt from above the rinse area. I can see how a higher water volume can be of benefit in terms of how quickly a window can be cleaned.

so would you say a higher cal no and a lower psi number

Good Question. In Theory both the calibration and PSI in the system would be lower.

The calibration number does not have a direct impact on the pressure in the WFP system it has much more subtle impact.
Some of the main drivers for pressure in a system are
Pump
Hose and expansion rate of the hose wall
Jet size


By Calibrating a control to a pump and system we are telling the control what the base line pressure in a system is plus what the maximum normal operating pressure is.
From these the control can monitor system pressure and as water is stopped DE the pump.

Increasing the water Volume could mean simply changing the number or size of the jets on the brush head. A wider jet could reduce the amount of pressure as there is less of a restriction.
This would mean the base line pressure is lower to compensate the Calibration needs to be more sensitive and would also be lower.

The question for me is is it better to have maximum flow always EG fast moving water or is it the amount of water on the window together with a means to alter volume that is important?

[H20cleaning]

100psi pump running full boost!!! im suprised you havent emptied your local resiviours

[Michael Peterson]

i use the same, tosh works the same way i think, fan jets aquadapter and about 500 litres on a full day

[windiewasher]

100 psi pump with no controller for me

+1

[mrwindows]

For all of the above.
What litres per min does your 100 psi pump have?
and what jets do you use and how many?

[DG Cleaning]

100psi pump running full boost!!! im suprised you havent emptied your local resiviours

I use less than 400l a day

[windiewasher]

For all of the above.
What litres per min does your 100 psi pump have?
and what jets do you use and how many?

5 litres a minute