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7 I STA ATI
A D START UP
7 8 2 We di g i t cauti s
• Rep ace air i side the tube with itr ge gas t preve t c pper xide fi
( xyge carb
di xide a d Fre
• Use a reduci g va ve f r the itr ge cy i der
• D
t a w the tubi g t get t
refrigera t syste va ves t bec
• D
t use age ts i te ded t preve t the f r ati
refrigera t i a d ay cause da age r a fu cti s
• Repeat the previ us pr cedures f r the sec d c
7 8 3 I su ati g the refrigera t tubi g (fig 9)
Ther a i su ati
sh u d be app ied t a pipes i the u it i c udi g c
F r the gas i e use i su ati g age ts resista t t at east 120 C r higher te peratures f r a ther pipes a resista ce
f up t 80 C is sufficie t
The thic ess f the i su ati
c diti s i side the pipe passage cavity exceed 30 C b s 70% u r A s is ate f are c
i su ati g s eeve f thic ess equiva e t t that f the pipe i e fixi g it with a specia tape
Tw tubes arra ged t gether
iquid tubi g
I su ati
pag 22
are
t acceptab e )
h t duri g bra i g The itr ge gas i side the tubi g ay verheat causi g
e da aged Theref re a w the tubi g t c
f xide fi
ecti
ust be at east 10
r higher I crease the thic ess if the ther
Gas tubi g
fig 9
fr
f r i g duri g the bra i g pr cess
whe bra i g
These age ts adverse y affect the refrigera t a d
ecti
p i ts
F are i su at r
F are u i
U it side
F are ut
igr
etric
ecti s by creati g a
I su ati
tape (white)
Tube i su at r
( t supp ied)
Heat resista t
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