Computrac MAX-1000 User's Manual - Arizona Instrument

alance could result in costly repairs. Cover the pan support hole in the bottomof the chamber with masking or other similar tape. Carefully mark the RTD with apermanent marker on the inside of the shroud and on the outside of the clamp tomark the relative RTD position in the heater.2. Remove the shroud to provide the maximum cleaning benefit. Remove the fourevenly spaced, small screws, located on the outside of the shroud, holding it inplace. Carefully slide the RTD out of the shroud. Take care not to pull the RTDwires out of the heater box while removing the shroud.3. Lightly spray the shroud with cleaning solution and allow it to stand for severalminutes. Scrub with the stiff bristle brush. Repeat if necessary to remove layers ofaccumulated buildup. Rinse under warm water and dry.4. Prepare the heater box by placing paper towels around the elements. Lightlyspray the front (face) of the heater box and allow to stand, or alternately spray adamp cloth or paper towel with cleaner and clean the heater box. Use a smallbrush or cotton swab to remove excess buildup. Dry the front of the heater withpaper towels or damp cloth until clean.Do NOT spray cleaner heavily into the heater and/or shroud area. Excessivemoisture could affect wiring and its insulation.5. Allow heater box to dry for at least fifteen minutes to ensure that is completelydry.6. Re-assemble heater and correctly position the RTD using the RTD alignmentgauge and the marks made with the permanent marker. If an RTD alignmentgauge (AZI p/n 360-0164) was not included with the delivery of your unit, pleasecontact your Sales Representative or Customer Service Representative to obtainone before attempting to clean your instrument.7. Remove the masking tape from the hole in the chamber floor and carefullyinstall the pan support and pan. Run a weight test to verify that the unit isfunctioning correctly (see page 55).Cleaning frequency will vary depending on the application and frequency of use.We recommend that you establish a periodic cleaning schedule to ensure unit tounit correlation and performance. The instrument should be returned to AZI on anannual basis for a temperature calibration which is NIST traceable. Call AZICustomer Service if you have any questions.60