Service manual

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. R&D, HOBART CHINA AMX/AM900 / 17
7.3.2ADJUSTMENTOFCHEMICALSDEFICIENCYSENSORS
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POTENTIOMETER:
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Graduations:1to9
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Sensitivity:1(non‐sensitivechemicalsensing/
 sensitivefailureindication
9(sensitivechemicalsensing/
non‐sensitivefailureindication)
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Basicsetting:3
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Duetothephysicalpropertiesofrinseaid(e.g.wetting),evensmallestrinseaidquantitiesinsidethehosewillbe
detectedbythedeficiencysensor.Ifthesensorisadjustedtoosensitively,maybedeficiencywillnotbereleased.
–TEST"DEFICIENCY"
Flushthesuctionhosethoroughlywithfreshwater
toremoveanychemicals.
Whenthehoseisdrained,therespectiveLEDshouldbe"OF".
–TEST"FULL"
Fillthesuctionhose(seechapter5,page8).
TherespectiveLEDshouldlightup.Ifnot,adjustpotentiometeruntiltheLEDlightsup.
Nowthehoseshouldbecompletelyfilledandwithout
airbubbles.
TESTINGTHEPCB
–SelectServiceMode(seechapter111.1.2,page28).
–Hosesareemptyanddeficiencysensorpotentiometersturnedtoleftstop:
Switchingfunctions"S07"(detergent)and"S08"(rinseaid)mustbe"0".NosensorLEDlightsup.
–Potentiometersturnedtoright
stop:
Switchingfunctions"S07"(detergent)and"S08"(rinseaid)mustbe"1".TheLEDoftherespectivecircuitlights
up.
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Detergentdeficiencyindication"‐‐0"Rinseaidhosefilled"‐‐1"
–Aftertesting:
Setpotentiometers(detergentandrinseaid)tovalue"3"(basedon
testswiththemostcommonproducts).
Detergent
Rinse aid