Haier AU282FHERA - Evacuation, Valve Operation, and Refrigerant Charging

78
|s ~H57G5F=BA
Jvacute at the check valve of liquid stop valve and both sides of the gas stop valve4
Yo prevent the different oil into the pipe2 please use the special tool for W:76F2 especially for
gauge manifold and charging hose4
Yo prevent the compressor oil into the refrigerant cycle2 please use the anti3counter3flow
adapter4
Gecause the unit is with refrigerant W:76F2 the below issues should be paid attention@
Yighten torque as the table below@
less than =
=4>;
.RF]7;4=/
less than 96
8?4:
.RF]9?48/
79
>4>
.RF]7:4=/
shaft
.valve body/
cap
.cover/
Y3shape nut
.check joint/
Yighten torque S4m
for gas pipe
for liquid
pipe
}s |<97> H5?H9 BC9D5F=BA
Tpen5close method@
Yake down the valve cap4
Yurn the liquid stop valve and the gas stop valve with hexangular spanner until it stops4 Nf
opening the valve strongly2 the valve will be damaged4
Yighten the valve cap4
Tperation procedure@
leakage test passed
evacuation begins
evacuation ends
check vacuum
charge refrigerant
after reaching 3767PUa or less
.below 3=;;mmMg/2 let the
vacuum pump running
continuously for over 7hour4
leave it for over 7
hour2 vacuum
pointer does not
arise4
if vacuum pointer arises2 it shows there is water or leakage in the
system2 please check and modify it2 and then evacuate again4
~s z88=F=BA5? D9:D=;9D5AF 7<5D;=A;
Hharge the additional refrigerant as liquid state with the gauge4
Nf the additional refrigerant can not be charged totally when the outdoor stops2 charge it at the
trial mode4
Nf the unit runs for a long period in the state of lack of refrigerant2 compressor will occur failure4
. the charging must be finished within 96 minutes especially when the unit is running2 menawhile
charging the refrigerant/4
Nnstallation procedure