(5)
MULTIMETER-0-1000 VDC +/- 1%, 0-750 AC, 0-2
AMPS, 0-2 MEGOHMS - (commercially available)
C. References
(1)
AMM 20-41-01/201, Electrostatic Discharge Sensitive Devices
(2)
AMM 24-22-00/201, Electrical Power Control
D. Access
(1)
Location Zones
153 Aft Cargo Compartment (Left)
154 Aft Cargo Compartment (Right)
(2)
Access Panels
822 Aft Cargo Compartment Door
E. Prepare For Test
S 865-018
(1) Supply electrical power (AMM 24-22-00/201).
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(2) Open these circuit breakers on the main power distribution panel,
P6, and attach DO-NOT-CLOSE tags:
(a) 6H1, FIRE EXTINGUISHING ENG L BTL 1
(b) 6H2, FIRE EXTINGUISHING ENG L BTL 2
(c) 6H3, FIRE EXTINGUISHING ENG R BTL 1
(d) 6H4, FIRE EXTINGUISHING ENG R BTL 2
S 025-020
(3) At engine fire extinguisher bottles 1 and 2, disconnect these
electrical connectors from the discharge squibs per Table 501:
~.............................................................................. | TABLE 501 | | Engine Fire Bottle Connections | ................................................................................ | Connector | Bottle Connected To: | ................................................................................ | D2188 | B17, BTL1 - Left Engine Discharge Squib | ................................................................................ | D2190 | B17, BTL1 - Right Engine Discharge Squib | ................................................................................ | D2266 | B18, BTL2 - Right Engine Discharge Squib | ................................................................................ | D2268 | B18, BTL2 - Left Engine Discharge Squib | 2.................................…............................................1
S 435-197
WARNING: PUT THE PROTECTIVE COVERS ON THE FIRE BOTTLE
_______ SQUIBS. IF YOU DO NOT PUT PROTECTIVE COVERS ON THE FIRE BOTTLE SQUIBS, THE FIRE BOTTLES CAN RELEASE ITS CONTENTS SUDDENLY AND CAUSE INJURY TO PERSONS.
CAUTION:_______DO NOT PUT SHUNT PLUGS ON THE FIRE BOTTLE SQUIBS. THE SHUNT PLUGS CAN CAUSE DAMAGE TO THE SQUIB PINS.
(4)
Put the protective covers on all the fire bottle squibs.
S 865-022
(5)
Remove the DO-NOT-CLOSE tags and close these circuit breakers on the P6 panel:
(a)
6H1, FIRE EXTINGUISHING ENG L BTL 1
(b)
6H2, FIRE EXTINGUISHING ENG L BTL 2
(c)
6H3, FIRE EXTINGUISHING ENG R BTL 1
(d)
6H4, FIRE EXTINGUISHING ENG R BTL 2
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S 735-023
(6) On the SQUIB TEST Control Panel, P61, push the L ENG (1 and 2) and R ENG (1 and 2) squib test lights.
(a) Make sure the green squib test lights come on.
S 745-101
(7) Make sure the six EICAS circuit breakers on the P11 panel are closed.
F. Do a test of the Extinguisher Bottle Squib Discharge Circuit
S 865-105
(1)
On the control stand panel, P10, set the L and R FUEL CONTROL switches to the RUN position.
S 865-104
(2)
Set the LOAD CHECK switch on the squib circuit test box to the OFF position.
S 495-150
(3)
Attach the adapter cable to the connector on the squib circuit test box.
NOTE: Adapter cables are included with the squib circuit test box.
____ The appropriate adapter cable must be attached to match the electrical connectors from the squibs.
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