CSP−900RMM−2 MD Helicopters, Inc.
Rotorcraft Maintenance Manual
Page 202
Revision 22
26-20-20
2. Discharge Cartridge Bridgewire
Resistances Test
(Ref. Figure 201)
Special Tools
(Ref. CSP−SPM)
Item Nomenclature
T1003 Digital Multimeter, Portable
T1006 Shunt Plug Cover
T2026 Chamber, Safety
(1). Install wire from discharge cartridge
safety chamber (T2026) to ground.
(2). Attach technician ground strap to
discharge cartridge safety chamber
(T2026) and test ground.
(3). Remove discharge cartridge from fire
bottle with shunt plug cover installed.
Test meter which passes more
than 50 milliamperes current
may damage discharge cartridge, reducing
cartridge life. Higher current may cause dis
charge cartridge to detonate.
Fire Extinguisher
(4). Attach free end of technician ground
strap to wrist of test technician.
(5). Thread discharge cartridge, with shunt
plug cover installed, into discharge
cartridge safety chamber (T2026).
(6). Remove shunt plug cover (T1006).
(7). Using digital multimeter (T1003)
measure discharge cartridge bridgewire
resistance (Pin A to Pin B) 0.90-1.10
ohms. Replace cartridge if required.
(8). Install shunt plug cover onto discharge
cartridge.
(9). Remove discharge cartridge from
discharge cartridge safety chamber
(T2026).
(10). Install discharge cartridge into fire
bottle.
A
B
1.00± 0.10 OHMS
CARTRIDGE
SCHEMATIC
9G26-014A
CARTRIDGE
SHUNT PLUG COVER
Manufacture
Date
11/02
Figure 201. Discharge Cartridge Bridgewire
Resistance Test
3. Service Life Limit of Discharge Cartridges
(1). Verify manufacture date stamped on
discharge cartridges ( Ref. Figure 201).
(2). Remove discharge cartridges that have
reached service life limit (Ref. Chapter
04).
(3). Return expired discharge cartridges to
Mass Systems, Inc. or an approved
service-repair facility.
CAUTION
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