What psi do you set your pump at?

Been cleaning carpets since 1981 and it has always been 400 psi for standard cut pile residential carpets. A little less (350 psi) for delicate and woven carpets and a little more (450 psi) for restaurants. Was wondering if after all these years and the increased vacuum of more modern systems if most cleaners are about the same. As far as tile goes I rarely go over 800 psi. I found it's just not necessary and can cause more problems than it helps. Well?

Sounds right to me.

400 psi most residentials
300 psi for more delicate carpets
150 for furniture
500 for commercial
300-600 for tile and grout (depending on method)

Carpet 600 psi
Upholstery 600 psi (that's right I don't change a thing but my tool an old steamway hydrokinetic tool does the regulation for me)
Tile/grout 1,100 psi. and Ive never had a problem.

Depending on the equipment would have some effect on what jets I would use on a wand. Mostly with like 2 11003 jets with  a 36/3L blower I set my pressure at 350 for carpet.  With my truckmounts which  had a 45 or 4M blowers I usually ran my pressure at 425 psi.
My first truckmount was a Prochem CubXL which came with a single 11003 jet wand with a 1.75 inch
tube . The manual recommended 350 psi. That is what I ran it at and it would maintain about  175 degrees.  It had a 16HP V twin Briggs Vanguard with a 3MVL Sutorbilt vac blower. At the time it seemed perfect. Of course when I upgraded to larger setups then that changed my perspective somewhat.

Sounds close to what we run, occasionally run up to 550 on really nasty restaurant carpet. Keep in mind, regardless what the manufacturers tell you, most of the copper tube in heat exchangers is on good for up to 900psi prolonged usage. I tell my guys to never go over 600 to be safe

I now run 350 PSI for most carpets....It's gotten lower over the years as I became more aware of dry times. When I first got my TM I ran 450-500, as reccomended by the TM manufacture, but then as I said above and also realized I seemed to clean just as well at 350, that's now what I run.

For most furniture and mattress cleaning using the DM2, I use 450-500 PSI.

T&G cleaning I'm limited to 6-650 PSI with my LG heater, and have only run higher PSI if I bypass the heater.

I have no idea as I have not replaced my guage that failed. I adjust it till it feels right

There's no set psi for carpet cleaning for me, it's all depending on the situation, if the carpets is not too dirty, 400 psi, if it's medium soiling, 450 psi, if it's dirty, 500 - 550 psi, it also depends on the type of carpets, on olefin berber, even if it's dirty, usually 400 - 450 psi will do the job just fine, this is another scenario, the carpet is dirty but the home owner is elderly with walker, I clean it at 400 psi but I use more pre sprays and increase my detergents, yes I'm leaving slightly more residues that way, however the main goal is achieved, clean carpets and alive home owners   
Regarding upholstery, it's about 300 - 350 psi.
Tile & grout is about 600 psi, with heavy scrubbing and hotter cleaning water.

200 - 250 for carpets [portable mach.]
75 - 100 for uph.
The above pressures work OK for me.

I have never used over 400 on commercial, but, I have our Japanese place to clean tonight. Maybe I'll try 550.

I use 400 on cut pile.

500 if it's nasty, or just the 360

Tile, I have always used 1000, but since this thread I did one Friday at 800 after a grout brush. Looked great. I may start doing this.

Uph is about 300, but I really don't see why that matters cause you control the flow at the tool.

average resi 500ish with wand
resi with rx20 350-400

commercial entrance matting with wand 750 lol
commercial wand- 500+
commercial rx20 (restaurant or extreme soil ) 500, otherwise 400-450

uph with sapphire left at 500
internal jet 350-500
prochem flood tool 300-350

tile varies from 700-1600