I've noticed, over the years, that acid-side rinses like Last Step and End Zone, cause black streaks on the first pass of the wand or RJE in some carpets. Several more passes are required to get them out. It's as though the dirt isn't being emulsified, but consolidated into those streaks. Anyone else notice this?
Acidic Rinses Causing Black Streaks
- Thread starter Johnny
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Shawn Forsythe
RIP
What are you using to precondition the carpet, and how are you agitating? Is your prespray drying before you rinse/extract?
You do know that with using those products (acid rinse), the vast percentage of your emulsification should be accomplished BEFORE you even touch wand to carpet, right?
You do know that with using those products (acid rinse), the vast percentage of your emulsification should be accomplished BEFORE you even touch wand to carpet, right?
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Thorougly pre-spray with appropriate product and powerscrub and rinse before dry.
Shawn Forsythe
RIP
Is there a reason why you don't want to say what?
Lee Stockwell
FOJL
extrapolate from incomplete data
Shawn Forsythe
RIP
I'd rather give him the benefit of the doubt, and not make assumptions. Let's not make this more mysterious than it might be at this point.
But you might be right, Lee. He didn't ask for a reason, just wanted to poll others who might be experiencing the same.
sweendogg
Member
sounds to me like if by chance you might be using an emulsifier most of the time, when you switch to an acidic rinse your are in effect descaling your hose, jets and manifolds... Just my perception.
Dolly Llama
Number 5
we must be using the same Magic 8 BalL, SweenDoggiel , cause that was my first thought too
..L.T.A.
Jim Pemberton
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- Jim Pemberton
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KevinL
Supportive Member
x3, black streaks can only be coming from your solution hose. How strong are you mixing that stuff?
By "appropriate product", I meant appropriate prespray for fiber type and soil load.
Been using Flex with Citrus, TLC, and EnzAll, all mixed per instructions.
I use ParFlex hose; no black rubber core.
Been using Flex with Citrus, TLC, and EnzAll, all mixed per instructions.
I use ParFlex hose; no black rubber core.
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DangerkittyToTheRescue
Member
That was my first thought too, and depending weather or not you've got last step chemical injection, you're descaling the heat exchanger too. Old school exchangers used to do that, hence the need to "season" them after acid rinse. IIRC, that was mostly the cast iron exchangers.
As long as you're quick on the draw, know what's up, you can steam them right out, use a little traffic lane.
ruff
Member
Unless he's using crazy acid rinse dilution and I am sure he doesn't, I do not see any chance that descaling will cause that problem. Definitely not black, also he's using parflex hoses, no black inner rubber hose. And if caused by descaling I would think it would be even and not a streak and would clog his jets.
Must be a different reason.
.
Must be a different reason.
.
DangerkittyToTheRescue
Member
I agreed that the acid he was running was acting like a descaler, flushing out the solution hoses and such. Sometimes the older rubber diaphragms in pumps let go with a blackish mark on the carpet, usually first start up in the morning after the machine has been sitting overnight.
