77
1) Remove residual refrigerant more than 5 minutes later after
turning off the refrigerator. ( If not, compressor oil may leak inside.)
2) Remove retained refrigerant slowly by cutting first high pressure
side (drier part) with a nipper and then cut low pressure side.
1. Removal of residual
refrigerant.
Precautions
Items
10-3. Practical Work for Heavy Repair
* When replacing a drier:
Weld
①
and
②
parts by blowing nitrogen (0.1~0.2kg/cm2) to high
pressure side after assembling a drier.
* When replacing a compressor:
Weld
③
and
④
parts by blowing nitrogen to the low pressure side.
Note) For other parts, nitrogen blowing is not necessary because it
does not produce oxidized scales inside pipe because of its short
welding time.
2. Nitrogen blowing
welding.
※
※
※
※
KEYPOINTING
Welding without nitrogen blowing produces oxidized scales inside
a pipe, Which affect on performance and reliability of a product.
Process tube
Compressor
Evaporator
Dryer
High Pressure side
Low pressure
side
Suction tube
Discharge tube
Condenser
Hot Pipe
Process tube
Compressor
Evaporator
Dryer
High Pressure side
Low pressure
side
①
Condenser
②
③
④
Hot Pipe
Содержание FRS(N)-U20IA
Страница 4: ...3 2 EXTERNAL VIEWS 2 1 External Size FRS N U20IA...
Страница 5: ...4 FRS N U20DA FRS N U20EA...
Страница 6: ...5 FRS N U20FA FRS N U20GA...
Страница 41: ...40 6 1 Wiring Diagram 6 DIAGRAM FRS N U20IA...
Страница 42: ...41 FRS N U20DA EA FA GA...
Страница 43: ...42 6 2 Circuit Diagram of Main PCB FRS N U20IA...
Страница 44: ...43...
Страница 45: ...44 FRS N U20DA EA FA GA...
Страница 46: ...45...
Страница 88: ...87 11 5 Dispenser Water Flow...
Страница 89: ...88 CABINET 12 1 FRS N U20IA 12 EXPLODED VIEW PARTS LIST...
Страница 90: ...89 MECH ROOM...
Страница 91: ...90 R ROOM...
Страница 92: ...91 F ROOM...
Страница 93: ...92 F DOOR...
Страница 94: ...93 R DOOR...
Страница 99: ...98 CABINET 12 2 FRS N U20DA...
Страница 100: ...99 MECH ROOM...
Страница 101: ...100 R ROOM...
Страница 102: ...101 F ROOM...
Страница 103: ...102 F DOOR...
Страница 104: ...103 R DOOR...
Страница 110: ...109 CABINET 12 3 FRS N U20EA...
Страница 111: ...110 MECH ROOM...
Страница 112: ...111 R ROOM...
Страница 113: ...112 F ROOM...
Страница 114: ...113 F DOOR...
Страница 115: ...114 R DOOR...
Страница 121: ...120 CABINET 12 4 FRS N U20FA...
Страница 122: ...121 MECH ROOM...
Страница 123: ...122 R ROOM...
Страница 124: ...123 F ROOM...
Страница 125: ...124 F DOOR...
Страница 126: ...125 R DOOR...
Страница 132: ...131 CABINET 12 5 FRS N U20GA...
Страница 133: ...132 MECH ROOM...
Страница 134: ...133 R ROOM...
Страница 135: ...134 F ROOM...
Страница 136: ...135 F DOOR...
Страница 137: ...136 R DOOR...
Страница 143: ...686 AHYE ON DONG MAPO GU S E OUL KOR E A C P O BOX 8003 S E OUL KOR E A PRINTED DATE JULY 2005 DAEWOO ELECTRONICS CORP...