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NORA Oilheat Technicians Manual

Chapter 14 Preventative Maint./Tuneups Chapter 14—Preventative Maintenance Tune-ups 14-5 For Riello Burners you’ll also want to have: • 10mm and 12mm wrenches • #4 and #5 Torx screw drivers • 4mm and 5mm Allen wrenches (long and short handle) Test equipment—pressure gauge, vacuum gauge, electric meter, and complete efficiency kit. Vacuum cleaner, assorted adaptors and flue brushes. Supplies—furnace cement, rags, cleaner, drip tray, builder’s paper or other floor covering. As a professional, you should keep your tools and supplies organized and in good condition. Not only will they serve you better, you will project the image of a professional. Tune-up procedure The following are the procedures for a typical tune-up. Individual companies often develop tune-up procedures that vary from these, so it is important that you follow your company’s policies and procedures. This is an effective way to perform a tune-up in a thorough, systematic manner. Although there may be circumstances that make it impossible to do all the operations in the suggested sequence, we urge you to follow this outline whenever possible. Step 1. Customer Interview: Give your customer a friendly and professional greeting. Courteously ask if they have experienced any problems or if they have any questions. Listen carefully and address their concerns. Ask to see the thermostat and check for obvious problems. Check the heat anticipator setting, and make sure that it is level and set 10 degrees above the room temperature. Listen for the burner and/or circulator to start and then operate the emergency switch to be sure it works properly. Leave it in the off position. Step 2. Visually inspect the unit: Visually inspect the unit while you spread sheets of newspaper or clean drop cloths to protect the work area. Verify the heat anticipator setting is proper for the control and that limit controls are properly set with the correct differential. Note what kind of filter and pump are installed so you can bring the right replacement parts. Check the flue pipe to be sure that it is properly screwed together and supported. If it is not, be sure to include a fix in your procedure. If the unit has not been in operation for some time, turn the burner on for about 5 minutes to dry the heat exchanger surfaces. Check the draft drop by testing at the breech and over-the-fire. If the drop is greater than -.04 inches, there is probably a build up of soot and scale, or you may have air leaks in the unit. Note any problems so that you can repair them during the tune-up and turn the unit off before proceeding. NOTE: If you run the burner, or if it was operating when you arrived, be extremely careful when vacuuming the unit. Allow it to cool enough to prevent hot embers from entering the vacuum. Step 3. Inspect the oil tank: NORA recommends that if possible, technicians Inspect the heating system


NORA Oilheat Technicians Manual
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