TM 10-7310-281-13&PMODERN BURNER UNIT (MBU)0009 00TROUBLESHOOTING PROCEDURES0009 00-2THIS PROCEDURE COVERS:MBU fails to startINITIAL SETUP:Maintenance LevelMaterials/PartsOperatorNoneHOUR METER BACKGROUND LIT ?YesNoYesNoPROCEED WITH OPERATION.MBU OPERATING NORMALLY?CHECK POWER SOURCE, BATTERY PACK, OR POWERCONVERTER SWITCHES. CHECK POWER CABLES FORPROPER CONNECTION. WHEN HOUR METER BACK-GROUND IS LIT ATTEMPT STARTUP IAW WP 0005MBU PREPARED IAW WITH WP 0005OF 10-7310-281-13&P ?YesPREPARE MBU FOR OPERATION IAW 0005 AND ATTEMPTSTARTUP IAW WP 0005 OF TMNoSERVICE? ATTEMPT RE-START OF MBU IAW WP 0005 OFTM UP TO THREE TIMES (TO PURGE ANY AIR THAT MAY BEIN THE FUEL SYSTEM). IF INDICATOR IS STILL LIT, FUELFILTER MAY BE DIRTY, FUEL NOZZLE CLOGGED, ORIGNITOR FAILURE. REPLACE THESE PARTS ASNECESSARY IN THE ORDER LISTED IAW TMVOLTAGE ? VERIFY POWER IS AVAILABLE AT SOURCE.ENSURE 24VDC EXTENSION AND BRANCH CABLES AREFIRMLY CONNECTED TOGETHER, TO 24VDC SOURCE ANDMBU. WHEN HOUR METER BACKGROUND IS LIT STARTMBU IAW WP 0005 OF TMLOW FUEL ? FILL FUEL TANK OR START MBU IAW WP 0005OF TMANY RED INDICATORS LIT?MBU STILL DOES NOT STARTMBU STILL DOES NOT STARTREFER MBU TO UNIT MAINTENANCEON NEW OR PREVIOUSLY COMPLETELY DRAINED UNITSIT IS NECESSARY TO PURGE THE FUEL LINES OF AIR BYDEPRESSING THE START BUTTON UP TO TWO MINUTESNOTE !
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