Nut drivers: 3/16",1/4", 3/8" and 1/2" Wire cutter and stripper Tubing cutters: 3/4" regular and mini Flaring tool Flashlight with spare batteries Drop light Jumper leads with insulated alligator clips Tape measure: 12' minimum Drill and drill bits 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 & 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 you 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. Service companies may develop tune-up procedures that vary from these, 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. 1 Customer Interview 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° 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. 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 has 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 five 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 buildup 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. 3Inspect the oil tank. Follow the routine tank inspection procedure found at NORAweb.org/storage-tanks 4Oil lines, valves, and filter Shut off the oil valve and remove the filter canister— use a pan to collect the extra oil. Clean and check the filter can and replace the cartridge and gaskets. If you find evidence of excessive sludge or water, notify your supervisor so corrective action can be scheduled. Inspect the oil line for leaks, kinks or dents. If the line is run underground, check to be sure it is made of coated copper or run in protective tubing; if bare copper is run underground, report it to your office. Make sure there are no compression fittings. If you find any, replace them with flare fittings. 5 Fuel Unit Clean or replace the pump strainer, carefully scraping off the old gasket before installing a new one. Open the valve, turn the switch on and bleed the unit: Run oil through a clear tube into a container until there are no visible air bubbles. Check for leaks at the valve stem, filter and the pump gasket. Disconnect the nozzle line from the drawer assembly and install your pressure gauge on the nozzle line. Operate the unit until the pressure holds steady and increase the pressure 40-50 PSI above the recommended setting. Check that the pressure reading changes smoothly as you turn the adjustment screw. A pulsating or bouncing needle could indicate a leaking oil line or a bad pump. After adjusting the pump back to its proper setting, wait until the unit shuts off on safety and verify the primary control’s safety timing. When the unit shuts off, the pump pressure should drop no more than 15 to 20% and then hold steady. If the pressure continues to drop, the pump has a bad cut-off and requires replacement. 6 Nozzle or Firing Assembly Mark the position of the firing assembly on the burner housing—remove it and note the nozzle type, size and spray angle. Verify that these match the unit data plate or the listing in your manufacturer’s OEM guide. Remove the nozzle and carefully drain the oil into a container. Inspect the nozzle adapter. Replace it if it’s stripped, cracked, or if the seat is worn. Flush out the assembly, fill it with clean oil and install a new nozzle. Clean, inspect and adjust the electrodes using the appropriate gauge. 6 ICM/May/June 2017
ICM May-June 2017
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