Hi Steve
Sorry for delay in replying. Shame to hear about your dad's pole. Got me worried now :-/
I'm getting a system from Ionic. I've gone for a hot system. Maybe that'll make the difference
When I tried the system, we used a
LOT of water! We were to we had to follow a strict procedure when cleaning. Top of frame first, (taking care to avoid the air vents), then sides of frame, rinse it off. Then clean the glass and final rinse. So I've gone for the full 1000 litres. We are gonna blast those windows with water
We are also going to clean them twice the first time.
I have a friend whose been using a home made system for 3-4 months on his residential customers. 400 litre tank in an escort van. He says he gets good results, (he has not lost one customer or had one single complaint), but he notices that the windows clean better on warm days. He's hoping to add an inline heater to his system to overcome this.
I'm picking it up on friday. Will try it out from monday onwards. Hope it's not an expensive mistake :-/ Only time will tell.