TM 9-4120-411-14
SECTION/PARAGRAPH
TITLE
PAGE
Temperature Sensor (RT5) Replacement ........................................................................................
Remote Box Assembly Replacement ..............................................................................................
Temperature Sensor (RT1) Replacement ........................................................................................
Light Emitting Diodes (DS1 Thru DS3) Replacement ........................................................................
Push Button Switches (S1 & S2) Replacement ................................................................................
Potentiometer (R1) Replacement ....................................................................................................
Control Box Assembly Replacement ...............................................................................................
Potentiometer (R2) Replacement ....................................................................................................
Push Button Switches (S4 & S5) Replacement ................................................................................
Toggle Switch (S7) Replacement ....................................................................................................
Light Emitting Diodes (DS4 Thru DS6) Replacement .........................................................................
Heater Assembly Replacement .......................................................................................................
Inside Blower Replacement ............................................................................................................
Inside Blower Motor Replacement ...................................................................................................
Crankcase Heaters (HR1 & HR8) Replacement ...............................................................................
Crankcase Temperature Sensor (RT4) Replacement ........................................................................
Outside Coil Temperature Sensor (RT3) Replacement ......................................................................
Cover Retaining Rod Replacement .................................................................................................
End Rail Replacement ....................................................................................................................
Rear Rail Replacement ..................................................................................................................
Front Rail Replacement ..................................................................................................................
Preparation For Storage Or Shipment .............................................................................................
Disconnect And Secure NBC Kit If Used ..........................................................................................
Disconnect Input Power And Ducts .................................................................................................
Secure Remote Control Box If Used ................................................................................................
Secure Condensate Drain Hose And Install Shipping Covers .............................................................
Pack Components Inside FDECU ....................................................................................................
Section I. SERVICE UPON RECEIPT
4.1 SITE REQUIREMENTS.
4.1.1 Siting. Figure 4-1 illustrates the various requirements and limitations for determining proper placement of the
FDECU. In addition to those requirements, the unit must be placed so that the sides and top are a minimum of four feet
from any obstruction. The unit must be placed to allow for water draining from the bottom in the winter during outside coil
defrost cycle. When orienting the unit to the shelter, be sure that the ducts can be connected with smooth bends and will
not get kinked. The unit must be placed on a relatively level surface, within 5 in any direction.
4-2