Order this information in Print

Order this information on CD-ROM

Download in PDF Format

     

Click here to make tpub.com your Home Page

Page Title: Section Ill. TROUBLESHOOTING
Back | Up | Next

Click here for a printable version

Google


Web
www.tpub.com

Home


   
Information Categories
.... Administration
Advancement
Aerographer
Automotive
Aviation
Combat
Construction
Diving
Draftsman
Engineering
Electronics
Food and Cooking
Math
Medical
Music
Nuclear Fundamentals
Photography
Religion
USMC
   
Products
  Educational CD-ROM's
Printed Manuals
Downloadable Books
   

 

Section   Ill.   TROUBLESHOOTING 3-4.   General 2.  Each  malfunction   stated   is   followed   by   a   list   of This   section   provides   information   in   diagnosing probable  causes of  the  trouble.  The    corrective and  correcting  unsatisfactory  operation  or  failure  of action   recommended   is   described   opposite   the the   air   conditioner   at   the   organizational   level. probable   cause. Malfunctions  which  may  occur  are  listed  in  table  3- Table    3-2.    Troubleshooting Malfunction 1.   Air   conditioner   fails   to   operate. 2.   Air   conditioner   noisy. 3.   Evaporator   fan   fails   to   operate. 4. 5. Fan   rotation   wrong. Condenser  fan  fails  to  operate.. 6.    Insufficient    cooling. 7.   Air   output   volume   insufficient. Probable  Cause a.   Main   power   cable   disconnected. b.  Loose   electrical   connections. a.   Compressor   oil   level   incorrect. b.  Compressor     defective. c.   Condenser   fan   bent   or   broken. d.  Evaporator   fan   bent   or   broken. a.   Motors   not   receiving   electrical power. b.  Faulty   Switch   No.   2. c.   Loose   connections   between   motor and   power   supply. d.  Fan  blade  binding. e.  Fan   motor   too   hot   and   overloads open. f.  Burned    out    fan    motor. g.  Power    relay    defective. Wrong   motor   wiring. a.   Switch   No.   3   not   on   “COOL” b.  Switch  No.  4  not  set  at  low  enough temperature c.   Loose   connection   in   wiring. d.  Defective   power   relay. e.  Defective   selector   switch,   switch No.   3. f.  Fan   blade   binding. g.  Fan   motor   too   hot   and   overloads open. h.  Burned   out   fan   motor. a.  Receiver   valve   closed. b.  Insufficient   air   output c.   Evaporator   fan   motor   defective. d.  Condenser   fan   motor   defective. e.  Compressor     defective. f.  Thermostat   defective. g.  Low   on   refrigerant. h.  Filter   drier   clogged. a.  Dirty   filter. b. Improper   evaporator   fan   rotation. Corrective  Action a. b. a. b. c. d. a. b. Connect  power  cable. Tighten    connections. Report to direct support maintenance. Report to direct support maintenance. Replace   bent   or   broken   condenser fan.   (para   3-18). Replace bent or broken evaporator   fan.   (para   3-17). See   Item   1   above. Replace   Switch   No.   2.   (para   3- 25). c.  Check   for and   tighten loose connections. d.  Relieve   binding. c.  Test   fan   motor.   (para   3-17). f.  Replace   fan   motor   (para   3-17). g.  Replace   defective   motor   relay (para   3-27). Check   wiring   diagram   (fig.   FO-1). a.  Put  switch  No.  3  on  “COOL” b.  Set  switch  No.  4  on  “COOLER”. c.  Check   for   and   tighten loose connections. d.  Replace  power  relay  (para  3-27). e. f. g. h. a. b. c. d. e. f. g. h. a. b. Replace  switcb   (para   3-25) Relieve    binding. Test   fan   motor   (para   3-18). Replace   fan   motor   (para   3-18). Open  receiver  valve. Correct   condition   see   item   7. Replace   evaporator   motor.   (para 3-17). Rep lace condenser    fan motor (para   3-18). Report t o     d i r e c t support maintenance. R e p o r t     to direct support maintenance. R e p o r t    to direct support maintenance. R e p o r t    t o    d i r e c t    s u p p o r t maintenance. Clean   filter   (para   3-15). Check   and   correct   phasing   (para 3-17). 3-3

Privacy Statement - Press Release - Copyright Information. - Contact Us - Support Integrated Publishing

Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business