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TM5-4120-384-14
5-33.
COMPRESSOR.-Continued
Remove the cap
from the tubing at point 2.
Disconnect  the
pump  discharge  line  from  the  tubing
at  point  4  and
connect  it  to  the  tubing  at  point  2.
Cap  the  tubing
at  point  4.
Disconnect  the  pressure  equalizer
solenoid
valve
plug  P9  from  receptacle  J9.
Energize  the  pressure  equalizer  solenoid  valve  by
applying  24  volts  dc  across  pins  A  and  B  of  plug  P9.
Start  the  pump  and  flush  the  line  for
approximately
10 minutes, then turn the pump off.
Remove the cap from the tubing at point 5.
Remove the pump discharge line from the tubing at
point  2  and  connect  it  the  tubing  at  point  5.
Remove  the  recovery  line  from  the  valve  at  point  6
and  connect  it  to  the  tubing  at  point  2.
Close  the
valve  at  point  6.
Start  the  pump  and  flush  the  line  for
approximately
10  minutes,  then  turn  the  pump  off.
De-energize  the  pressure  equalizer  solenoid  valve
by
removing the voltage source from pins A and B of
plug  P9.
Disconnect  the  discharge  and  recovery  lines  from
the
tubing  and  remove  all  caps  from  the  tubing.
(k)  Refer  to  figure  5-22  and  purge  the  system
with
nitrogen
a p p r o x i m a t e l y  3 0  p s i g  ( 2 . 1 1  k g / c m2 )  a s  f o l l o w s :
at
Make  sure  caps  are  off  the  tubing  at  all  points  and
that  the  suction  and  discharge  line  service  valves
are  open.
Connect  the  nitrogen  line  to  the  tubing  at  point  1
and  release  nitrogen  into  the  system  for
approximately  5  minutes  or  until  moisture  ceases  to
be  discharged  from  the  system.
Energize  the  bypass  solenoid  valve  by  applying
24
volts  dc  across  pins  A  and  B  of  plug  P8.
5-81

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