I can't say I fancy having to use a new pad every 4 -6 sq yd's as with the Texatherm system, the primary reason for that being that the rinse agent needs to come into contact with the pre-spray while it is still hot, which means an awful lot of pad changes.
How long in time or sqyds does a DF pad last, on average?
Simon,
In fairness to Texatherm, you should get more than that out of each pad.
In answer to your question, to some extent, how long is a piece of string.
I would say about 20m/s on a normally soiled office with DF.
Bear in mind, we always use a Pile Lifter to do the pre vacuuming, which to me is critical. It's amazing how much stuff they shift before we even pre-spray.
Normally with DF and with the heater on (it's basically a 3Kw hair dryer), I find pads dry out before they get too soiled.
They can normally be re-moistened (as long as you do not re immerese them in the clean solution bucket) and probably used for the same amount again. They do hold an awful lot of dirt.
After a cetain time we turned the pad over, presenting the clean (and by this time dry) side to help finish off. you would be surprised at how quickly they dry off with the heater / blower running. They are also hot to the touch after a few square metres. I cannot see how you can keep a pad hot without this constant input.
the only time I had to change pads after a couple of m/s was in an office adjoining a locomotive maintenance yard. We are talking a couple of centimetres of thick petroleum grease on tiles, loosely resting on a wooden floor.
HWE would have warped it as it could run straight between and under them. I actually admitted defeat and walked off (lucky I did a demo first so the client could see the problems.
Garry