Cleaning all carpet in a hotel

[Amritgcalgary]

I recently landed a hotel carpet cleaning gig and they are wanting to clean the carpets in the ballrooms, hallways lobby etc. every 3 months(about 40,000 square feet)

for the ballroom(16000 sq ft open area), I have been using a 20 gal karcher walk behind self propelled extractor(BRC 46/76). It did a decent job but i didn’t see a huge difference. I spot cleaned some of the stains afterwards with my portable and wand.

I pre sprayed the areas working one section at a time and then ran my karcher unit with just hot water in the fresh water tank. Should I be adding some sort of solution to the fresh water as well?

I was hoping I would see more of a pop on the carpets after extraction but I didn’t get that.

 

[Papa John]

Maybe the carpets were still damp?
Do you clean the filter often, or touch the carpet with your hand to check performance?
Adding a rinse agent could help.