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Page Title: Section IV. TROUBLESHOOTING
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(2) Replace a damaged cover or grille. b. Servicing. Refer to figure 3-4 and service the condenser  coil. c. Installation.   Refer  to  figure  3-5  and  install the  cover  and  grille. c. installation.  Refer  to  figure  3-5  and  install the grille and screen. 3-11. Condenser coil 3-12. Sight Glass a. Removal.  Refer to figure 3-5 and remove the Inspect  the  sight  glass  (fig.  1-2)  for  cracks,  bro- condenser  gille  and  screen. ken glass, and dirt, Section IV. TROUBLESHOOTING 3-13. General 3-.14. Troubleshooting Instructions This section provides information useful in diag- Refer   to   table   3-2   for   the   list   of   malfunctions nosing  and  correcting  unsatisfactory  operation  or failure of the air conditioner or its components. and  the  corrective  action  procedures.  Each  mal- function  is  followed  by  a  list  of  probable  causes of   the   trouble.   The   corrective   action   recom- mended is described opposite the probable cause. Section V. FIELD EXPEDIENT REPAIRS 3-15.   General Organizational   maintenance   troubles   may   occur while  the  air  conditioner  is  operating  in  the  field where  supplies  and  repair  parts  are  not  available and   normal   corrective   action   cannot   be   per- formed. When this condition exists, the following expedient   repair  may  be  used  in  emergencies, upon decision of the unit commander. Equipment so repaired must be removal from service as soon as   possible   and   properly   repaired   before   being put into service again. Section VI. ORGANIZATIONAL 3-18.   General The air conditioner is constructed with removable aluminum   panels   and   grilles.   The   front   access panel   (fig.   1-1)   provides   access   to   the   control panel, the control box, and service valves. A dis- charge  grille  protects  the  evaporator  coil  and controls the discharge of conditioned air. The in- take  grille  protects  the  air  conditioning  filter  and regulates  the   amount  of  air  intake.  The  con- denser coil grille (fig. 1-2) protects the condenser coil.  A  fan  guard  (fig.  3-5)  is  mounted  on  the rear  to  protect  operating  personnel  from  the  con- denser fan. The fresh air inlet screen permits the entry   of   outside   air,   which   is   controlled   by   a damper  door  control  (fig.  1-1).  The  C/B  cover  is provided for ease of instillation of a chemical/biological  filter  when  required. 3-16. Compressor Inoperative Trouble Expedient  remedy Compressor overload pro- Bypass the protector by tector malfunctioning. installing ‘two insulated jumper wires between the connection terminals on the compressor. 3-17. Control Circuit Inoperative Trouble Expedient mamiu Fuse  blown. Remove the front access panel,  control  box  cover, and fuse. Install jumper wire MAINTENANCE PROCEDURES 3-19. Fan Guard, Condenser Fresh Air Inlet Screen and bypass fuse. Screen and a. Removal.  Refer to figure 3-5 and remove the fan  guard,  condenser  grille  and  screen,  and  fresh air inlet screen. b. (Waning. Clean the screens with compressed air. c. Inspection,  Inspect the guard and screens for bends, dents breaks or other damage. d.   Replacement.    Replace   a   badly   damaged guard or screen with a serviceable one. e. Installation. Refer to figure 5 and install the guard,  condenser  screen  and  grille,  and  fresh  air inlet  screen. 3-20. Evaporator Fan and Inlet Ring a.  Removal. 3-9

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