Someone asked on another forum about this so i thought ill share here as well.Ok cleaning windows with them dirty Vents.
Take a quick look at the first picture. The vents are always up the top and collect a lot of dirt and muck; they are always full of it. These can be a problem with a Water Fed Pole. But can be very easy to over come.
When we clean these vents with the frames you can not get away from the problems of runs and streaks, as the spray will course problems anyway so its best to clean them. (If you have a low flow rate and only clean the glass then there will be no problems cleaning)
If we take a look at the next picture (Side view (1)) a lot of users place the brush head over the vent where water will be flowing into the vent, this cleans the vent but leaves a lot water in the vent that runs out over a good few minutes when you have long finished the clean, which cause these runs streaks, and unhappy customers.
Now the way to over come this simple problem is the following. Take a look at the next picture (Side View (2)) By having an 45 degree angle on the brush making the flow rate miss the vent and only having the brush rubbing the vent then we will not get any water into the vent which in turn does not cause them pain in the bum runs or streaks. Just make sure the jets are not pointing at the vents.
This method will stop them runs or streaks with these vents. Hope that helps.
Justin
Ps My drawing is not my strong point.