Panasonic CS-PV9DKE, Service Manual

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d . R 410 A refr i gerat i ng mach i ne o il
Convent i ona ll y, m i nera l o il or a synthet i c o il such as a lk y l benzene has been used for R 22 refr i gerat i ng mach i ne
o il. B ecause of the poor compat i b ili ty between R 410 A and convent i ona l o il s lik e m i nera l o il , however, there i s a
tendency for the refr i gerat i ng mach i ne o il to co ll ect i n the refr i gerat i ng cyc l e . F or th i s reason, po l yester and
other synthet i c o il s wh i ch have a h i gh compat i b ili ty w i th R 410 A are used as refr i gerat i ng mach i ne o il.
B ecause of the h i gh hygroscop i c property of synthet i c o il , more care must be ta k en i n i ts hand li ng than was
necessary w i th convent i ona l refr i gerat i ng mach i ne o il s . A l so, these synthet i c o il s w ill degrade i f m i xed w i th
m i nera l o il or a lk y l benzene, caus i ng c l ogg i ng i n cap ill ary tubes or compressor ma l funct i on . D o not m i x them
under any c i rcumstances .
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Cause the gas pressure of R 410 A i s approx i mate l y 1.6 t i mes as h i gh as that of R 22 , a m i sta k e i n i nsta ll at i on or
serv i c i ng cou l d resu l t i n a major acc i dent . I t i s essent i a l that you use R 410 a too l s and mater i a l s, and that you
observe the fo ll ow i ng precaut i ons to ensure safety .
D o not use any refr i gerant other than R 410 A i n Acs that have been used w i th R 410 A .
I f any refr i gerant gas l ea k s wh il e you are wor ki ng, vent il ate the room . Tox i c gas may be generated i f refr i gerant
gas i s exposed to a d i rect f l ame .
When i nsta lli ng or transferr i ng an AC, do not a ll ow any a i r or substance other than R 410 A to m i x i nto the
refr i gerat i on cyc l e . I f i t does, the pressure i n the refr i gerat i on cyc l e can become abnorma ll y h i gh, poss i b l y
caus i ng an exp l os i on and / or i njury .
After f i n i sh i ng the i nsta ll at i on, chec k to ma k e sure there i s no refr i gerant gas l ea ki ng .
When i nsta lli ng or transferr i ng an AC, fo ll ow the i nstruct i ons i n the i nsta ll at i on i nstruct i ons carefu ll y . I ncorrect
i nsta ll at i on can resu l t i n an abnorma l refr i gerat i on cyc l e or water l ea k age, e l ectr i c shoc k , f i re, etc .
D o not perform any a l terat i ons on the AC un i t under any c i rcumstances . H ave a ll repa i r wor k done by a spec i a li st .
I ncorrect repa i rs can resu l t i n an water l ea k age, e l ectr i c shoc k , f i re, etc .
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I n order to prevent an R 410 A AC from m i sta k en l y be i ng charged w i th any other refr i gerant, the d i ameter of the 3- way
va l ve serv i ce port on the outdoor un i t has been changed . A l so, to i ncrease i ts ab ili ty to w i thstand pressure, the
oppos i ng d i mens i ons have been changed for the refr i gerant p i pe f l ar i ng s i ze and f l are nut . Accord i ng l y, when
i nsta lli ng or serv i c i ng refr i gerant p i p i ng, you must have both the R 410 A and ord i nary too l s li sted be l ow .
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Type of wor k
Fl ar i ng
B end i ng, connect i ng p i pes
A i r purg i ng
Gas l ea k i nspect i on
Tab l e 3 Too l s for i nsta ll at i on, transferr i ng or rep l acement
O rd i nary too l s R 410 A too l s
Fl ar i ng too l (c l utch type), p i pe cutter, reamer
Tor q ue wrench (nom i na l d i ameter 1/4 ,
3/8 , 1/2 ) Fi xed spanner (oppos i ng s i des 12
mm, 17 mm, 19 mm) Adjustab l e wrench,
S pr i ng bender
V acuum pump H exagona l wrench
(oppos i ng s i des 4 mm)
Gas l ea k i nspect i on f l u i d or soapy water
Copper p i pe gauge for c l earance
Adjustment, f l ar i ng too l (c l utch type) *1 )
Man i fo l d gauge, charg i ng hose, vacuum
pump adaptor
El ectr i c gas l ea k detector for HF C
refr i gerant *2 )
*1 ) Y ou can use the convent i ona l (R 22 ) f l ar i ng too l. I f you need to buy a new too l , buy the R 410 A type .
*2 ) Use when i t i s necessary to detect sma ll gas l ea k s .
*F or other i nsta ll at i on wor k , you shou l d have the usua l too l s, such as screwdr i vers ( + , - ), a meta l- cutt i ng saw, an
e l ectr i ca l dr ill , a ho l e core dr ill ( 65 or 70 d i a . ), a tape measure, a l eve l , a thermometer, a c l amp meter, an i nsu l at i on
tester, a vo l tmeter, etc .
Tab l e 4 Too l for serv i ng
Type of wor k O rd i nary too l s
R 410 A too l s
Refr i gerant charg i ng
B raz i ng (Rep l ac i ng refr i gerat i ng
cyc l e part *1 )
Ni trogen b l ow set (be sure to use n i trogen
b l ow i ng for a ll braz i ng), and braz i ng), and
braz i ng mach i ne
El ectron i c sca l e for refr i gerant charg i ng
Refr i gerant cy li nder Charg i ng or i f i ce and
pac ki ng for refr i gerant cy li nder
*1 ) A l ways rep l ace the dryer of the outdoor un i t at the same t i me . The rep l acement dryer i s wrapped i n a vacuum
pac k. Rep l ace i t l ast among the refr i gerat i ng cyc l e parts . S tart braz i ng as soon as you have opened the vacuum pac k ,
and beg i n the vacuum i ng
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