MASK SWITCH/lNDICATOR LIGHT FLASHING AND/OR WARNING HORN SOUNDING.

TM 3-4240-309-20&P

1. MASK SWITCH/lNDICATOR LIGHT FLASHING AND/OR WARNING HORN SOUNDING (CONT).

Pages 2-18, 2-19, 2-22 and 2-28

Replace main fan (2-111).

Reconnect PE airduct

hose to port marked TO

PROT ENT on filter unit

airflow valve. Open all

interconnecting doors

between vans 1, 2, 3,

and 4. Reconnect plug

P5 to J5 at PDUs on vans

1 and 4. Repeat

functional test (p. 2-3).

Replace PDU (p. 2-95).

Reconnect PE airduct

hose to port marked TO

LEGEND

PROT ENT on filter unit

Compartment Control Module

CCM

airflow valve. Open all

Feed Thru

Elec/Pneu Feed Thru

interconnecting doors

between vans 1, 2, 3,

Power Distribution Unit

PDU

and 4. Reconnect plug

Test Point

TP

P5 to J5 at PDUs on vans

1 and 4. Repeat

functional test (p. 2-3).

Reconnect cable B.

Replace cable B.

Replace cable A.

Replace CCM (p. 2-89).

Reconnect PE airduct

hose to port marked TO

PROT ENT on filter unit

airflow valve. Open all

interconnecting doors

between vans 1, 2, 3,

and 4. Reconnect plug

P5 to J5 at PDUs on vans

1 and 4. Repeat

functional test (p. 2-3).

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