Quantcast Section   VIII.   MAINTENANCE   OF   CONDENSER   COIL,   EVAPORATOR   COIL,   AND   DRAINS

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Page Title: Section VIII. MAINTENANCE OF CONDENSER COIL, EVAPORATOR COIL, AND DRAINS
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Figure   4-5.   Housing   covers.
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Figure   4-6.   Evaporator   drain   tubing.
(2)  Install   rear   cover   and   seven   screws.   Install (3)   Install   access   cover   and   four   screws. condenser   cover   and   three   screws   and   lock   washers. (4)   Install   front   cover   and   eight   screws. Section   VIII.   MAINTENANCE   OF   CONDENSER   COIL,   EVAPORATOR   COIL,   AND   DRAINS 4-22,   General The   condenser   coil   (fig.   1-3   )   and   evaporator   coil require   periodic   cleaning   to   insure   full   air   flow through   the   coils   and   maximum   heat   transfer during   operation.   The   evaporator   drain   tubes   (fig. 4-6),   located   under   the   evaporator   coil   in   the evaporator   fan   compartment,   are   connected   to   a drain   tube   in   the   housing.   The   housing   drain   tube terminates   in   the   drain   openings   at   the   rear   of   the housing.   Drain   tubes   must   be   open   to   prevent buildup   of   condensate   under   the   evaporator   coil. 4-23.   Servicing   Condenser   Coil a.  Refer   to   paragraph   4-21   and   remove   rear cover   and   condenser   cover. b.  Clean   the   surface   of   the   condenser   coil   with   a soft   bristle   brush.   Blow   dirt   out   from   between   the fins   with   compressed   air.   Hold   nozzle   of   air   hose   at least   6   to   8   inches   away   from   coil   to   avoid dam   aging   the   fins. Warning:  Do   not   use   steam   to   clean   coils. c.  During   cleaning   inspect   coil   for   leaks   or damaged    fins. If   leaks   or   damage   are   evident, report   condition   to   direct   support   maintenance. d.   Refer   to   paragraph   4-21   and   install   rear   cover and   condenser   cover. 4-24.   Servicing   Evaporator   Coil .  R e f e r    t o    p a r a g r a p h    4 - 1 8    a n d    r e m o ve evaporator   outlet   louver.   Refer   to   paragraph   4-21 and   remove   front   cover. b.  Clean   the   surface   of   the   evaporator   coil   with   a soft   bristle   brush.   Blow   dirt   out   from   between   the fins   with   compressed   air.   Hold   nozzle   of   air   hose   at least   6   to   8   inches   away   from   coil   to   avoid dam   aging   the   fins. Warning:  Do   not   use   steam   to   clean   coils. c.   During   cleaning,   inspect   coil   for   leaks   or dam   aged   fins. If   leaks   or   damage   are   evident, report   condition   to   direct   support   maintenance.. d.   Refer   to   paragraph   4-18   and   install   outlet louver.   Refer   to   paragraph   4-21   and   install   front cover. 4-25.   Evaporator   Drain   Tubing a.   Removal.   Refer   to   figure   4-6   and   remove   six hose   clamps,   tee,   and   three   pieces   of   flexible   tubing. 4-12

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