LG MFL39754850, Owner'S Manual

Page: 31 / 48

Lo Hi
Ind oo r u nit
Out do or uni t
Man ifo ld va lve
Cha rg e h ose
Nitr og en gas
cyl ind er( in ver tic al
sta nd ing p osi tio n)
Pre ssu re
gau ge
Air p urg in g
Pre ss ure in th e s ys te m r is es .
Air a nd m ois tu re re ma in in g i n t he re fri ge ra nt
sy ste m h av e u nd es ira ble e ffe cts a s in dic ate d
be lo w.
Op era tin g c urr en t r is es .
Co olin g(o r h ea tin g) eff ic ie nc y d ro ps .
Mo is tu re in t he r efr ig era nt cir cu it ma y
fre ez e an d blo ck c ap ill ary t ub in g.
Wa te r m ay le ad to c orr os io n o f p art s i n t he
re fri ge ra tio n s ys te m.
Th ere fo re , t he in do or un it an d t ub in g b etw ee n
th e in do or an d o utd oo r u nit mu st be le ak te ste d
an d e va cu ate d t o r em ove a ny no nc on de nsa ble s
an d m ois tu re fr om th e s yst em .
Air p urg in g w ith va cu um
pu mp
A
Ch ec k th at ea ch t ub e(b oth l iq uid a nd g as
sid e tu be s) be tw ee n th e in do or an d
ou td oo r un it s ha ve be en pr op er ly
co nn ec te d an d all wiri ng f or th e te st ru n
ha s be en c om ple te d. Re mo ve t he s erv ic e
va lve c ap s f ro m b oth th e g as an d t he li qu id
sid e o n t he o utd oo r u nit. N ote th at bo th th e
liq uid a nd t he g as sid e se rvi ce v alv es on
th e ou td oo r un it are k ep t clo se d at th is
sta ge .
B
Lea k t est
Co nn ec t t he m an ifo ld v alv e(w ith p re ssu re
ga ug es) a nd d ry nitr og en g as cyl in de r t o
th is se rvi ce p ort w ith c ha rg e h ose s.
Be su re to u se a m an ifo ld va lve fo r a ir
pu rg in g. If it is no t a va ila ble , u se a st op va lve
fo r t his p urp ose . T he "H i" kn ob o f t he m an ifo ld
va lve m ust a lw ays b e k ep t c lo se .
Pre ssu riz e t he sys tem to n o m ore th an 1 50
P .S .I.G . w ith d ry nitr og en g as an d c lo se th e
cyl in der v alv e w hen th e g au ge rea din g
rea ch ed 1 50 P .S .I.G . N ext , t est fo r l eak s w ith
liq uid s oap .
To avo id ni tro gen en ter ing th e r efr ige ran t s yst em in a
liq uid st ate , t het op of th e c ylin der m ust b e h igh er tha n it s
bot tom w hen yo u p res sur ize th esy ste m. U sua lly, th e
cyl ind er is use d in a ver tic al s tan din g p osi tio n.
Do a le ak te st of all jo in ts of th e tu bin g(b oth
in do or an d o utd oo r) an d b oth g as an d li qu id si de
se rvi ce va lve s.
Bu bb le s in dic ate a le ak. B e s ure to w ip e o ff th e
so ap w ith a c le an c lo th .
Aft er th e s yst em is fo un d t o b e f ree o f l ea ks,
rel ie ve t he n itr og en p res su re by lo ose nin g th e
ch arg e h ose c on ne cto r a t t he n itr og en c ylin de r.
Wh en th e s yst em p res su re is red uc ed to n orm al,
dis co nn ec t t he h ose fr om th e c ylin de r.
AIR P UR GIN G
CA UT IO N
CA UT IO N
Pre par ati on
IN ST AL LA TIO N
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