Norcold 1200 Series Service Manual

Also see for 120-IM series: Service manual

Norcold 1200 Series Service Manual Manual pdf 31 page image

1200XX/120X-IMXX ModelsRefrigerator Service ManualFigure 25. Flue baffleFlueThe flue comes equipped with a removable baffle and ametal flue cap. The flue cap is shown in Figure 25 inserta. The location of the flue baffle is shown in Figure 25,insert b.The flue and the condition of the baffle should bechecked annually. In roof exhaust venting applications,the refrigerator has to be removed from the enclosure tocheck or service the flue, flue cap or baffle.In most sidewall exhaust venting applications, removalof the sidewall exhaust vent provides clear access toservice the flue or any of its components.A one inch diameter, loop-handle, twisted wire brushwith a 27 inch wire handle is recommended forsweeping clean the flue.Flue CapThe flue cap, see Figure 24, insert a, deflects hotexhaust gases sideways. It also keeps dirt and debrisfrom falling inside the flue. Cooling performance may beaffected if the blocks the flue opening.Flue BaffleThe flue baffle, see Figure 25, transfers heat to thecooling unit generator.A retaining wire suspends the flue baffle in the flueapproximately 3 incher away from the peak of the flame.The condition of the flue baffle should be checkedannually. In roof vented installations it is necessary toremove the roof vent assembly or the refrigerator. Tocheck the flue baffle:1. Remove the flue cap.2. Unclip the baffle retaining wire from the rim of theflue.3. Pull the baffle out of the flue tube and check samefor excessive corrosion27Light blue steady flamewith sharp blue conesRetaining wireBaffleFigure 26. Flame appearanceCAUTIONDo not cut or modify the flue baffle retaining wire!The wire positions the baffle for optimal heattransfer.BurnertubeElectrodeCanisterBurnerFlueBaffleOrificeBurnerboxFluecapFluetubeBafflesuspensionwirea.b.Figure 24. Flue and componentsFlame AppearanceThe flame should be light blue with sharp blue rootcones and a steady burning flame plume. See Figure26.A flame that is mostly orange or yellow, is erratic, and/orunstable, indicates a "dirty" burner. See page 28 forburner cleaning procedure.