Section V. PREPARATION FOR STORAGE OR SHIPMENT
4.56 DISCONNECT AND SECURE NBC KIT IF USED. See figure 4-55.
4.56.1 Operate the FDECU in vent mode per paragraph 2.4 for approximately one hour to ensure that any condensate is
drained from the unit and to dry out the inside coil and ducts.
Rotating parts and lethal voltage levels are used in operating the FDECU. Be sure
power source is disconnected. Injury or death can occur if connected to power
4.56.2 Shutdown the FDECU per paragraph 2.4 and disconnect it from power source.
4.56.3 Disconnect power cord (1) from each NBC motor blower (2) and NBC motor blower power connectors (3) located
on the FDECU control box assembly. Store power cord in NBC support kit.
4.56.4 Disconnect NBC air duct (4) from each NBC motor blower (2) and NBC filter canister (5) center hole. Store one
NBC air duct and one NBC motor blower in each NBC support kit.
4.56.5 Remove duct tape securing NBC air duct (6) to NBC adapter (7) then disconnect NBC air duct from each NBC filter
canister (5) outside hole and NBC adapter. Store one NBC air duct in each NBC support kit. Store NBC filter canister for
4.56.6 Loosen two clamps (8) then remove supply air duct (9). Be sure duct is dry then store the duct and clamps for re-
The NBC return air duct is designed with one duct inside another, sewn together at
one end. This will create an air chamber between the ducts that when pressurized,
4.56.7 Loosen two clamps (10) then pull outer return air duct (11) back. Loosen clamp (12) then remove return air duct.
Be sure duct is dry then store the duct and clamps for re-use.
4.56.8 Remove filter (13) from NBC adapter (7) and install it into flange assembly (14).
4.56.9 Turn NBC adapter (7) counterclockwise to unlock then pull it from volute assembly (15). Store the NBC adapter for