TM
3-4240-309-20&P
1. MASK SWITCH/lNDICATOR LIGHT FLASHING AND/OR WARNING HORN SOUNDING (CONT).
Replace airflow valve
(p. 2-119). 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 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).
Replace cable A.
Reconnect PE airduct
hose to port marked TO
PROT ENT on filter unit
airflow valve. Open all
interconnecting doors
between vans 1, 2, 3,
Reconnect cable A.
and 4. Reconnect plug
Proceed to page 2-27.
P5 to J5 at PDUs on vans
1 and 4. Repeat
functional test (p. 2-3).
2-26