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_____________________________ ................................................................................. | Short Term (5 to 30 days) | | | | | | | | |
__________ ................................................................................. | To give protection for a maximum of | | | | | | | | | | 30 days, do the procedures that | | | | | | | | | | follow. | | | | | | | | | ................................................................................. | 1. Put an electrical ground on the | X | | | | | | | | | airplane (AMM 20-41-00/201). | | | | | | | | | ................................................................................. | 2. Put all switches to the OFF position.| X | | | | | | | | | This does not include the switches | | | | | | | | | | used to deactivate the systems. | | | | | | | | | ................................................................................. | 3. Open the circuit breakers for all | X | | | | | | | | | electrical/electronic components that| | | | | | | | | | have been removed from the airplane. | | | | | | | | | ................................................................................. | 4. Each 7-day cycle, apply power to all | | X | | | | | | | | installed electrical/electronic | | | | | | | | | | systems. Keep the power on for | | | | | | | | | | 2 hours. Make sure the main battery | | | | | | | | | | stays in a fully charged condition. | | | | | | | | | | You can use ground electrical power | | | | | | | | | | for this step. | | | | | | | | |
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 ALL  ú ú 03 Page 222 ú Mar 20/97
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

757 MAINTENANCE MANUAL
 ~............................................................................... | | Procedures Repeat Intervals (Days) | | ....................................... | | | | | | | | | As| | Item | Initial | 7 | 14| 30| 60| 90|180|Rqd| ................................................................................. | 5. Disconnect the main battery | X | | | | | | | | | (AMM 24-31-01/401). | | | | | | | | | ................................................................................. | 6. Disconnect the APU battery | X | | | | | | | | | (AMM 24-31-03/401). | | | | | | | | | ................................................................................. | Long Term (30 days to 2 years) | | | | | | | | |
_________ ................................................................................. | The procedures that follow are for | | | | | | | | | | protection of the airplane for a | | | | | | | | | | time up to 2 years. | | | | | | | | | | Do the procedures that follow at | | | | | | | | | | the start of the storage cycle | | | | | | | | | | and at the specified intervals. | | | | | | | | | | Also do the short term storage | | | | | | | | | | procedures. | | | | | | | | | ................................................................................. | 1. Put an electrical ground on the | X | | | | | | | | | airplane (AMM 20-10-21). | | | | | | | | | .................................................................................
 | 2. Do not remove the main battery from  | X |  |  |  |  |  |  |  |
 |  the airplane.  It must stay on the  |  |  |  |  |  |  |  |  |
 |  airplane to operate the fire  |  |  |  |  |  |  |  |  |
 |  detection and the fire extinguishing |  |  |  |  |  |  |  |  |
 |  systems.  |  |  |  |  |  |  |  |  |

 ................................................................................. | 3. Remove the APU battery from the | X | | | | | | | | | airplane. Examine, clean, and put | | | | | | | | | | the battery in a storage area. | | | | | | | | | | The battery must be in a | | | | | | | | | | discharged condition. The storage | | | | | | | | | | area humidity must be less than | | | | | | | | | | 90% and the temperatures must not | | | | | | | | | | be more than 120°F (49°C) | | | | | | | | | | (AMM 24-31-04). | | | | | | | | | | | | | | | | | | | | NOTE:____If some electrical components | | | | | | | | | | will stay on the airplane, as | | | | | | | | | | shown in the subsequent steps,| | | | | | | | | | do not remove the battery. | | | | | | | | |
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