[trevor perry]

Got this reply from H7m chat thingy...
jasonplocek: Standard machines will do up to 200 degrees, thereafter we are talking about wet, then dry steam.
When you want to produce steam you have to cut the water back and increase the temperature
what are you looking to clean with steam temperatures and high pressure of a pressure washer?
To get to 250 what you are doing is cutting back the water flow, typically by 1/2 so an 8.0 gpm machine will run around 4.0 gpm to get you over the 200 degree mark, the more you cut the flow, the higher temperature will go. we don't recommend this as it causes the impurities to essentially boil out of the water causing damage to pumps and causing the coiul to scale very quickly.

surely what you post above cannot be right as the water will go through the pump before going through the coil heater so therefore cant damage the pump, on the thermotech machine would this not also suffer from the same problem of causing scaling to the coil

[chris scott]

This came from the man at H&M ..who am i as a mere pressure washer to question it
We use this on the Doff/ Thermatec system  "Restorative ThermaTech Descaler   (20 litre container)* An inhibited acid de-scaling concentrate for the removal of calcium deposits in steam cleaning equipment"
Same as your kettle!!!!

[BDCS]

Do you actually own a Doff system ?

[chris scott]

 No too expensive for what it is...I rent the ThermaTech system  as and when. I did have a doff on hire for 6 months once so you could say i have shares in Stonehelth!

[chris scott]

Just looked at the H&M site again .The ones with the water recovery systems
They seem to favor big petrol engines .  Using both kohler  and Honda's on the same "rig". Why do they not stick one manufacturer ?
Replacing them with diesel for the British would make it even heavier. We in the uk would be overloaded before we even left the yard on most of there petrol set ups..let alone a diesel version.
There is no getting away from it though they are stunning bits of kit!!!
I Dont think there filteration system would cope with good old fashioned  sh**!

[chris scott]

The us is gallon is different to ours. So the specs are not actually as impressive as they first appear.