Sapphire scientific will hate me for this (Help for your TM) | TruckMount Forums #1 Carpet Cleaning Forums

Sapphire scientific will hate me for this (Help for your TM)

sbsscn

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Sep 17, 2009
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Arm Ben
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Hello folks,

I bought my SS370 last year the carbon fiber (imitation)

Now I am not putting it down at all. My machine is a BEAST! small but a beast.

Yesterday I went to my first assignment 4 floors or carpeted hallway, 4 levels of tiled landings, and stairs. Started at 9:30 ended at 1p.m.
I prevacuum , set everything up and lastly prior to firing her up I connected the fresh water supply. And then

A sound of gushing water, Baffled I look, search to figure what the heck is causing the sound, the sound lead me to look beneath my van and find gushing water running down towards the curb and a howling sound. I shut the water off and on and problem continued, I have a bypass/ wye connector just in front of machine connected to a 7 foot spray rinse lance for washing off or filling and turned that on and sound would go away. Anyhow problem continued.
I look around the machine near beneath the area of the water. Water was coming out of pressure relief hose, followed it to the Thermal well, to filler neck to the radiator ( I mean pressure relief) cap. Tapped it and sound would change along with water flow. well Ive looked this machine over from top to bottom, reverse engineered it (when I bought it) and quickly new what the problem was. I ran the machine knowing that no harm would come to it but downside would be that My temp and PSI wouldnt be the greatest.

Finished the job and called sapphire, Spoke to a tech guy there and he advised me to check all screens/filters. Now I maintain this machine like crazy, I usually change all oils and clean screens/filters every 1- or worst every 2 months, sometimes every 2 weeks when Im swamped. He asked me, you change and do this every time and month, I said yes, he said you should check all filters and screens and clean them all. I said I do , he said even the filter in the regulator? I said I didnt know there was one in there. Still he instructed me to clean them all. This made no sense to me I asked him you sure? he said yeah thats what you should do. I said, No. Its the radiator cap. He said its not likely. He said the regulator can have debris or be clogged and cause the cap to release. He offered and sent a picture via email on how to do the check. I asked him is there a alternate radiator cap I can use? a vehicle I can use to look up at a auto supply? He said No, ...maybe but it wont fit, but might be able to get something temp. I Said goodbye a shook my head I said Im not taking my regulator apart, Now way its clogged I know what the problem is, plus I got a water softener and pre filters and screens with clear containers hooked up before my machine to prevent this sort of stuff.

Today I went early in the morning prior to my first appointment to O'reillys. counter man showed me his stock on caps, just by looking at the part numbers I was able to find a comparable/substitute part quickly ( THANK GOD!)

bought it at $5.99 ($ 6 something with taxes) and installed it. Got to the job and machine is like new running with no issues a all.

By the way I called a distributor and they wanted $35 plus change and taxes and plus shipping and wait 2 days for arrival, another distributor wanted $65.
NO WAY!!


I'll share with you the part number. And although The cap is not 23lbs, the cap I am using is 20 lbs, wont hurt the machine at all.

O'reilly's # is 7020 by Murray temperature controls

Keep this number and I dare say buy one and keep it as spare in the van. If you can find a 7023 then you got an exact cap. The store I was in didnt have the #7023 in stock so I settled for the 7020.


If your cap says 23 like mine, buy the the new cap and have a spare it will eventually fail.
 
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SRD

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My 870 does that as well
 

AndyT

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Aug 8, 2012
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The inlet pressure regulator can be adjusted to compensate for the lower PSI.
 

SRD

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I replaced the cap on mine and it still leaks like a siv
 

AussieCarpetBloke

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May 15, 2016
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It’s not just the 5 psi that’s different
The original cap has a hole/stem in it which allows the water box to fill
Once filled it the stem blocks the hole, so it pressurises and builds heat
If your incoming water pressure regulator isn’t adjusted properly you can use the garden hose to pop the cap to over flow and make it dump on the ground
I only use garden hose, no onboard water
So I just adjust hose pressure so it just trickles out the van and back off slightly - works a treat!!
 

sbsscn

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Sep 17, 2009
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My regulator screen is not clogged and nor does my regulator need calibration.
replaced my cap and problem solved.

my old cap has a loose spring inside that was allowing pressure from the water to keep the bypass orifice open allowing the water to bypass freely into overflow hose.

Pretty much diagnosed it like a vehicle. nothing should ever overflow.
 
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