LG GBB530***F Series Service Manual page 49

T R OUB L E S HOOT ING (Mec hanic al P art)
▼ G eneral C ontrol of R efrigerating C yc le
NO. IT E MS
WE LDING R OD (1)H 30
(2)B cup-2
1
F LUX
2
LOK R ING (1)B oth of the tube is ins erted up to the s top.
(F igure 23, 24) (2)B oth of the LOK R ING is pus hed up to the s top
(3)T he bending point is not too clos e to the joint
3
(4)During the as s embly it is important that both
DR IE R AS M (1)As s emble the drier within 30min.
4
(2)K eep the unpacked drier at the temperature of
V AC UUM (1)When meas uring with pirant V acuum gauge
(2)If the vacuum degree of the cycle ins ide is 10
5
(3)V acuum degree of vacuum pump mus t be,
(4)V acuum degree mus t be s ame to the value
DR Y AND AIR (1)T he pres s ure of dry air mus t be more han
NIT R OG E N
G AS (2)T emperature mus t be more than -20~-70°C .
6
(3)K eep the pres s ure at 12~6kg/cm
NIP P LE AND (1)C heck if gas leaks with s oapy water.
7
C OUP LE R (2)R eplace Quick C oupler in cas e of leakage.
P IP E
8
C ONT E NT S A ND S P E C IF IC A T IONS
• C hemical Ingredients
Ag : 30%, C u : 27%, Zn : 23%, C d : 20%
B razing T emperature : 710~840°C
• C hemical Ingredients
C u : About 93%
P : 6.8~7.5%
T he res t : within 0.2%
• B razing T emperature : 735~840°C
• Ingredients and how to make
B orax 30%
B orax 35%
F luoridation kalium : 35%
Water : 4%
Mix the above ingredients and boil until they
are trans formed into liquid.
ending.
ends remain completely within the joint.
after unpacking.
80~100°C .
the charging M/C , vacuum degree is within 1
T orr.
T orr. below for low pres s ure and 20 T orr. for
high pres s ure, it s ays no vacuum leakage
s tate.
0.05 T orr. below after 5 min.
des cribed item above for more than 20 min.
12~16kg/cm
2
s ubs tituting dry air for Nitrogen G as .
• P ut all J oint P ipes in a clean box and cover
tightly with the lid s o that dus t or humidity is
not ins erted.
• R ecommend H34 containing 34% Ag in
the S ervice C enter.
• Make amount for only day.
Holding period : 1 day
• C los e the cover of container to prevent
dus t putting in the F LUX.
• K eep it in a s tainles s s teel container.
• F or a hermetically s ealed metal/metal
connection, the tube ends have to be
clean.
• LOK P R E P is dis tributed all of out-s urface
of the tube ends .
• Don't keep the drier in a outdoors becaus e
humidity damages to it.
• Apply M/C V acuum G auge without fail.
• P erform vacuum operation until a proper
vacuum degree is built up.
• If a proper vacuum degree is n't built up,
check the leakage from the C ycle P ipe line
part and Quick C oupler C onnecting part.
als o when
2
• C heck if gas leaks from joint of the
C oupler.
- 4 -
R E MA R K S