Computrac MAX-1000 User's Manual - Arizona Instrument

13 ROUTINE MAINTENANCEThe MAX-1000 requires routine cleaning to keep the test chamber free of excesssample material. Failure to keep the instrument interior clean reduces its accuracyand repeatability. Sample material collecting in the test chamber prevents freemovement of the pan support. Also, sample material collecting on the heatershroud prevents the lid from closing completely, causing erratic moisture results.Material also falls into the system's interior, causing balance problems. Routinecleaning of the test chamber reduces the possibility of problems and repairs,extending the life of the instrument.13.1 CHAMBER INTERIORThe chamber interior needs to be cleaned daily. To clean the chamber interior,switch the main power switch off. A vacuum line, portable vacuum cleaner, or asmall paint brush can be used to remove debris from the chamber.CAUTION: A compressed air line or canned air is not recommended, as debris flowsinto the system's interior and settles in the electronic components.13.2 HEATER CLEANINGTesting of some materials may cause a brown discoloration behind the heater andon the inside of the heater shroud. This darkening affects results as heat isabsorbed rather than reflected from the heater onto the sample.It may be necessary to periodically clean this heater. Items needed:! Cleaning solution such as “409" in a spray bottle. *! Cloth and/or paper towels! Small stiff bristle brush such as toothbrush or acid brush! Cotton swab! Water for cleaning and wiping shroud and heater after cleaning! Small Phillips head screw driver if you elect to remove the shroud! RTD alignment gauge (AZI p/n 360-0164)* NOTE: An oven cleaner such as “Easy-Off” should not be used on the aluminumshroud as it is corrosive and will pit the aluminum.1. Turn the unit off and unplug the Computrac. Ensure the unit has cooled downto ambient temperature. Remove the pan and use the supplied tweezers to pop thepan support up and out of the test chamber. Be careful - excess force on the59