L.B. White Premier TS350 Owner's Manual And Instructions

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L.B. White Premier TS350 Owner's Manual And Instructions Manual pdf 15 page image

Service Instructions1. Close the fuel supply valve to the heater anddisconnect the electrical supply before servicingunless necessary for your service procedure.2. Clean the heater’s orifice with compressed air or asoft, dry rag. Do not use files, drills, broaches, etc. toclean the orifice hole. Doing so will enlarge the hole,causing combustion or ignition problems. Replacethe orifice if it cannot be cleaned properly.3. The high limit switches, HEAT/VENT switch, andthermostat can be tested by disconnecting the leadsat the component, and jumpering the leads together.:-- Reconnect the electrical supply and open fuelsupply valves.-- If the heater lights, the component is defectiveand must be replaced.-- Do not leave the jumper on or operate the heater ifthe part is defective. Replace the part immediately.-- An alternate method for checking the componentsis to perform a continuity check..4. The air proving switch must not be jumpered. Ifjumpered, the ignition control will not allow heateroperation. Test the air proving switch for continuity. Ifdefective, replace the switch5. Open the respective case panel for access to burneror fan related components.6. For reassembly, reverse the respective serviceprocedure. Ensure gas connections are tightenedsecurely.7 After servicing, start the heater to ensure properoperation and check for gas leaks.8. If sheave or fan keys are lost during ser vice,replacements are made by using 3/16 square x 1 in.bar stock. Otherwise, order Part #22955.WARNINGBBuurrnn HHaazzaarrdd■ Heater surfaces are hot for a period of time after theheater has been shut down.■ Allow the heater to cool before performing service,maintenance, or cleaning.■ Failure to follow this warning will result in burnscausing injury.WARNINGFFiirree aanndd EExxpplloossiioonn HHaazzaarrdd■ Do not disassemble or attempt to repair any heatercomponents or gas train components.■ All component parts must be replaced if defects arefound.■ Failure to follow this warning will result in fire orexplosions, causing property damage, injury, or death.GENERAL1. Push the belt tensioner clockwise for removal of thebelt from pulley. See Fig. 11.FIG. 112 Check the fan and motor pulley grooves for dirt Cleanthe pulleys if needed.3. Install new belt. Using a straight edge, check motorand fan pulley alignment. Contact must be made atedges of both pulleys. See Fig. 12.FIG. 12BELT REPLACEMENTTENSIONERSTRAIGHTEDGEFAN SHEAVEMOTOR SHEAVEFAN PULLEYMOTOR PULLEY14