Have I got a faulty Kane 458?

[Millsy 82]

I have a 3 month old Kane 458 which keeps coming up fresh air purge remove flue probe press.

Is this normal for this to keep coming up I had an older Kane 456? Which did do this but only if it had been exposed to high co/co2 readings this just seem to be happening during normal operation. In fact this has happened twice in my last job in 10 minutes!

 

[Scott_D]

Sounds faulty
My 455 dies the same if I use it as a manometer for a long time thing switch it to FGA
I guess as the pumps not run for ages

 

[Harvest Fields]

Mine does it also. Normally when I switch from high to low Co test without removing the probe from the sample point. I’m sure the rep said it is to protect the sensors.

 

[Millsy 82]

Oh well best put up with it then. It's annoying as kanes take ages to purge initially and then go through it again is a pain.

 

[Luke78]

Interested to read this thread as I have a Kane 455 and had a similar experience during a service the other day; I had used it to check fan pressure (pump not running) then re-started it to check flue gases with boiler at maximum, which seemed to go OK, then set boiler to minimum and in less than a minute the analyser display was reading something like "CO OSR" alternating with "CO level high" and, even after moving the probe outdoors to fresh air I could not get the unit to shut down... It took around 15 mins before it would switch off.
Appreciate that this is probably a safety feature but, as mentioned above, it is not helpful when trying to set air/gas ratio!

I am guessing from Harvest Fields comments that this can be avoided by allowing the unit to run in fresh air in between testing at maximum and minimum rates? Also seems that there may be some connection with the fact that it had been used as a manometer prior to the flue gas test...?

Fairly sure that the readings were spurious on minimum rate (machine reported CO in excess of 400ppm!) as everything measured on max rate was more or less textbook (CO2 9.3%, CO circa 30 ppm).

The unit has come back from it's annual calibration at Kane in the last week too...

 

[ShaunCorbs]

also does it if its been on for a long time eg to restet itself