PIPcR AIRCRAFT CORPORATIO\
SECTIO\ 7
PA.28.18I, ÄRCHER
I1
DESCRIPTION
& OPTRATION
amounr of curren( sho\rn on lhe ämmctcr \{ill
tell immedrarely
if rhe alrer-
nator system is operaling no.mallt. äs the amourrt
ofcureDt shoun
should
cqual thc Iotrl
ampcrage d.aqn br the equipmenr \hich is
operatinS
c A L!110.\
Do not Lrsc cigar hghrer rcceptacle!
as
po$er
!ou.ces
lor an\ dc\Lces
olhcr than lhe crgar
lighlcrs \upplicd
sirh
Ihe airpl3De An\ orh.r
dc!Lce
pluggcd
'nro th.sc rcccplacles
ma!
bc
0amage{].
Fof
abnormrl
and or .mcrgenc! opcfalion
and
procedurc.
!e. Secrion
l.
7.I7
\'ACL
T]M S\ St[]\I
The
\acuum
s)\l.nr 's
deirgned
to operate thc
air dri\en
g\ro
inslfu-
m.nrt. This iDcludcs the drrcctlonaL and aurtudc
!vfo\
$hen insralled The
sj-stem conrsts of an en,qine dri\en \r.uuln
pump,
! \acuum
.eguhlor.
a
lilter and the neces\ar\
plumbrng
Ihe
\acuum pump
rs a dr\ !!
pe pump
$hich elimrn^t.s
the need Ior rn
air orl sepa.alor and
rts plumbirg A
sheaf dr,\e
p.otecti
thc
tump
Irom
d.rmage.
ll th. dri\c shea.\. the
glr\
$iLl bccome Inoperati\..
Ihe \ acuLrn
gaLrge.
InoLrnled on rhe rLght rn\trumcnl par€l
ro the right
o1 the radios. prot ides valuablc inlorn tion to rhc pilol
abo ul rhe opcralion
of thc
\acuum s\stem. ^ decrcase rn pr.ssurc rn
a s\stem that hrs
remained
constrnr
o!.r an exlended
penod
md! indical.
a dift\ liller. dinl sc.c.ns.
possrbl!
a sticking
!acLru
.egularor or leali Ln slsten
(ä
lo\ lacuum
rndicato. lighl rs
pro\ided
Ln the !nnuncrrto.
panell
Zero pres\ure
would
indicareasheafed
pumpdfi\e
defecrirepunp.possibl] ad.fecri!egäugeor
collapled llne. In thc e\enr ol an]
gauge
\anaLron lrcm
the norm.
lhc
pilol
should ha\. a Il1rchanr. check the \\\tcm 1o pr$enr po\\iblc
damage lo the
\tst.m c.mponcnls rr e\entual lailurc o1 the s!item.
ISStTEDT JLL\'2. 1979
RfVISEDT \O\ EjUBIR 15, l9lt2
RIPORT: Ya-1120
7-13
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