nigel great video ...2 questions Ive only used 2 bar before why use a 3 bar
also how much was the mossmatic ? and why 3 weeks non stocking Item
Thanks again for videoi
Thank You David:
My pump specs are in the vicinity of 8 gallons per min (TSF2021)
Theoretically I could run a 2 bar on that surface cleaner.
I would have to use the machines pump output gpm divided by the number of nozzles and the answer is close to the orifice size of the nozzle best suited for two bar operation. (8 / 2 = 4)
On the other hand if I used a 3 bar, I would apply the same formula (8 / 3 = 2.67) , I would use a 2.5 nozzle
Theoretically 2 spray
bars (not arms) the same diameter and speed (rpm's) , supplied by the same pressure and pump flow, equipped respectively with the same angle nozzle with respective orifices to yield the maximum cleaning units at each nozzle for 2 and 3 arms should have different production rates.
The 3 arm would have to turn 120 degrees to complete a full circular cleaned path, whereas the 2 arm would have to turn 180 degrees.
Thats just the basic outlook at a 2 vs 3 arm but there are some other factors to be considered, example (for the same criteria above)
Lets say I use the orifices recommended above at 15 degrees for the following:
2 Arm .....4.0 nozzle...... that should equate to 4 gpm each (but does not fully equate to this rational, because the supplied pressure is not 4000psi {TSF2021 rated at 3600 psi max}, see your nozzle chart or calculator, its more in the range 3.70 gpm per nozzle for 3400 psi nozzle pressure [200 psi in pressure losses])
3 Arm .....2.5 nozzle...... that should equate to 2.5 gpm each (bypassing 0.5gpm to the tank, but does not fully equate to this rational , explained above, its in the range of 2.3 gpm at 3400 psi nozzle pressure)
However, 4 gpm at the same pressure as 2.5gpm ( through there respective nozzles) has a higher cleaning unit capacity.
It is the cosmetic cleaning industries experience that the cleaning units from 2.5 nozzles between 3000psi an 3500psi in a surface cleaner is sufficient for most cleaning requirements.(industrial cleaning may require more of both)
Hence I went with the 3 bar.
Yes, it was a non stock item, i was disappointed somewhat.