Service Manual
Safety Operation of Flammable Refrigerant
Qualification requirement fo r installation and maintenance man
•A ll the w o rk men w ho are engaging in the refrig eratio n system sho uld bear th e va lid ce rtific a tio n awarded by the
au tho rita tive o rganization and th e q u a lific ation fo r dealing w ith th e re frige ration syste m recognized by th is in dustry. If it needs
oth e r tec hn ician to m aintain and re pair the appliance, the y sh ou ld be supervised by th e person w h o bears the q u alifica tio n fo r
using th e fla m m able refrigerant.
• It can o n ly be repaired by the m ethod sugg ested by the equ ipm e nt's m anufacturer.
Installation notes
•T h e air c o n d itio n e r is no t allowed to use in a room th a t has run ning fire (such as fire s ou rce ,w orking coal gas ware,
operatin g heater).
• It is not allow ed to d rill hole o r burn the co nn ec tion pipe.
•T h e air c o n d itio n e r m u st be in stalled in a room th a t is la rger than the m in im um room area.
The m inim um room area is show n on the nam eplate o r fo llo w in g ta ble a.
•L e a k te s t is a m ust after in sta lla tion.
table a - M inim um room area(m2)
Minimum
room area(m2)
Charge amount(kg) <1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2 2.1 2.2 2.3 2.4 2.5
floor location / 14.5 16.8 16.8 22 24.8 27.8 31 34.3 37.8 41.5 45.4 49.4 53.6
wall mounted / 5.2 6.1 7 7.9 8.9 10 11.2 12.4 13.6 15 16.3 17.8 19.3
window mounted / 1.6 1.9 2.1 2.4 2.8 3.1 3.4 3.8 4.2 4.6 5 5.5 6
ceiling mounted / 1.1 1.3 1.4 1.6 1.8 2.1 2.3 2.6 2.8 3.1 3.4 3.7 4
Maintenance notes
•C he ck w he the r th e m aintenance area o r th e room area meet th e requ irem ent o f th e nam eplate.
— It's o n ly allow ed to be operated in the room s th a t meet th e requirem ent o f th e nameplate.
•C he ck w he the r th e m aintenance area is w e ll-ventilated.
— The c o n tin u ou s ve ntila tio n sta tus shou ld be kept d u rin g the op eration process.
•C he ck w he the r there is fire sou rce o r pote ntial fire sourc e in th e m aintenance area.
— The naked flam e is pro hibited in the m aintenance area; and the “ no sm ok in g ” w arning board sho uld be hanged.
•C he ck w he the r th e appliance m ark is in good c on dition .
— Replace th e vague o r dam aged w a rning mark.
Welding
• If you sh ou ld c u t o r w eld th e refrigera nt system pipes in the process o f m aintain ing , please fo llo w th e steps as below:
a. S hu t dow n the u nit and c u t pow e r su pp ly
b. E lim inate th e refrigeran t
c. Vacuum ing
d. Clean it w ith N2 gas
e. Cutting o r w elding
f. C arry back to the se rvice sp o t fo r w elding
• Make sure th a t there is n 't any naked flam e near th e o u tle t o f the vacuum pum p and it's w ell-ventila ted .
•T he re frig eran t sho uld be recycled in to the specialized storage tank.
Filling the refrigerant
• Use th e refrigera nt fillin g appliances specialized fo r R32. Make sure th a t d iffere nt kinds o f re frige rant w o n 't con ta m ina te w ith
each other.
•T he re frig eran t tan k sho uld be kept u p righ t at th e tim e o f fillin g refrigerant.
•S tic k th e label on th e system after fillin g is finishe d (o r h aven 't finish ed).
• D on 't o ve rfillin g .
•A fte r fillin g is finish e d, please d o th e leakage detectio n before tes t run ning ; an oth er tim e o f leak d etection shou ld be done
when it's rem oved.
Safety instructions fo r transportation and storage
• Please use the fla m m able gas d etec tor to che ck before unload and open th e container.
•N o fire so urce and sm o king.
•A c c o rd in g to the local rules and laws.
Installation and Maintenance %
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