TM 9-2320-209-10-1 1. Make sure that personnel heater EMERGENCY switch (1) is in the up position. 2. Pull DAMPER knob (2) to full out position. 3. Place HI-LO switch (3) in HI or LO position, depending on heat needed. 4. Hold START-OFF-RUN switch (4) in START position until indicator light (5) comes on. STAR T-OFF-RUN switch (4) is spring loaded and must be held in position. 5. As soon as the indicator light (5) comes on, move START-OFF-RUN switch (4) quickly to RUN position. NOTE Moving START-OFF-RUN switch (4) lever from START position to RUN position too slowly will result in a heater shutdown. Move switch lever quickly. Warm air should be felt at the heat outlet within three minutes. If heater fails to start within two minutes (indicator light (5) remains off), move START-OFF-RUN switch (4) to OFF position. Wait three minutes before trying to start heater again. GO TO FRAME 3 4-387