D. Put the Airplane to Its Usual Condition
S 414-024
(1)
Install the insulation blanket.
S 864-025
(2)
Remove the DO-NOT-CLOSE tag and close the WATER QTY IND circuit breaker on the P18 panel.
(3)
Install the access panel in the aft cargo compartment.
S 414-026
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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737-300/400/500MAINTENANCE MANUAL
S 864-029
(4) Remove the electrical power if it is not necessary (AMM 24-22-00/201).
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38-11-51
ALL ú ú 01 Page 405 ú Nov 15/95
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
WATER HEATER - TROUBLE SHOOTING
_______________________________
1. Water Heater Trouble Shooting Chart
___________________________________
~.............................................................................. | PROBLEM | POSSIBLE CAUSE | ISOLATION PROCEDURE | CORRECTIVE PROCEDURE| ................................................................................
| The heater | No electrical | Do a check for power and | |
| switch is | power | ground at the heater | |
| ON, but the| | switch. | |
| light does | | | |
| not come | | If there is no power or | Locate and repair or|
| on. | | ground at the heater | replace the wiring |
| | | switch, servicing of the | as necessary. |
| | | wiring is necessary. | |
| | Indicator bulb | Remove the amber light | Replace the bulb |
| | | cover and examine the | if necessary. |
| | | bulb for damage. | |
| | Heater switch | Put the heater switch in | Replace the heater |
| | | the ON position. Do a | switch if |
| | | check for continuity | necessary |
| | | through the switch. If | |
| | | there is no continuity, | |
| | | servicing of the | |
| | | heater switch is | |
| | | necessary | |
| | | | |
| | Overheat | The overheat switch will RESET THE OVERHEAT| |
| | switch is open | open only if the cycling SWITCH| |
| | | switch does not function | 1) Turn the heater |
| | | correctly. Remove the | power off. |
| | | cover and manually reset | 2) Make sure the |
| | | the overheat switch. | heater is cool. |
| | | Turn the heater switch | Flush it with |
| | | to the ON position and | cold water by |
| | | see if the bulb comes | opening the hot |
| | | on. | water faucet. |
| | | | |
| | | | 3) Press the reset |
| | | | button by using |
| | | | finger pressure |
| | | | only. |
| | | | |
| | | | CAUTION:_______ DO NOT USE|
| | | | TOOLS. |
| | | | |
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