TM 9--2350--292--100053 00--3OPERATE AUXILIARY POWER UNIT -- CONTINUED0053 00STARTING APU -- CONTINUED7. Set APU GEN switch (5) to OFF.8. Set FUEL SHUTOFF switch (6) ON.NOTEThe LOW OIL PRESSURE indicator will light and stay on until the APU is running.The PREHEAT switch is held up until the APU starts.9. Hold the PREHEAT switch (7) up for 20 seconds (for temperatures above 55° F (13° C)) or for 1 minute (fortemperatures below 55° F (13° C)).10. Move START switch (8) to ON and hold until engine starts. If engine doesn’t start in 1 minute, release the STARTswitch and keep the PREHEAT switch up for another 20 seconds (or 1 minute below 55° F(13° C)). Try startingAPU again. If it still doesn’t start, troubleshoot (WP 0083 00).5678CAUTIONIf LOW OIL PRESSURE indicator stays on after the APU starts, or comes on while APU isrunning, turn FUEL SHUTOFF switch to OFF to stop APU. Failure to comply may result infailure of the APU.11. When the APU starts, release both the PREHEAT and START switches.12. Let APU warm up for three to five minutes before turning on the APU GEN switch (5) or operating the auxiliaryhydraulic system.
Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business
