Infinity Operations Manual (96402,96403, 96406, 96407) - Whip Mix

FIELD SERVICEREPLACEMENT OF HEATING PLATESTurn off the power to the oven, unplug the power cord,remove trays from the muffle chamber and insure thatthe oven is cool.Remove the upper back cover.On the rear of the unit remove the nuts that hold theheater plate wires to the ceramic terminals. Removeall hardware and wires from the terminals. Discardany burnt hardware and replace with hardware piecesshipped with the heater plates. Retain hardware forlater use. Straighten the wires for smoother removalof the plates.Straighten thermocouple at the bend and removebushings from heater plate wires.Move heater wires and thermocouple out of the upperhousing to allow insulation to slide out the back of theunit.From the front of the muffle chamber with the door openpush the entire insulation chamber out the back of unitand place on a table.Remove ceramic front plates from muffle insulation andplace aside.Place the new plates in the chamber, if back plates arebeing replaced as well they must be installed first, alsoinsure that the wires are bent up so they will slide intothe back.If the back plates are being replaced the filler stripshould be replaced as well. A new strip was shipped withthe plates.Side HeatingPlate Assembly(2)Insulating StripCeramic Insulating BushingsRear HeatingPlate LeadsOnce the plates are installed place the insulation chamberback inside the oven and wire the terminals according tothe model and voltage in the pictures on the next page:When wiring the plates insure that between each wirea flat washer is placed. See picture below.Flat WasherRear HeatingPlate LeadsCeramic FrontsHeater JumperNutLock WasherFrom here the plates can be removed by pulling themout the front of the insulation. The Large models haveback plates and side plates, while the Medium modelhas only side plates.Flat WasherNutLock WasherNote: Place flat washer between each wire.After the heater plates are wired, replace the upper backcover and bottom cover. Insure that the oven heats byrunning a program.21