3. Checking the air conditioning system.
①
Economic friendly refrigerant : R134a 0.7
∼
0.85Kg.
The presence of air and water in the system could jeopardize its efficiency.
-The air is uselessly compressed by the compressor and no cooling effect is produced.
-The moisture has a tendency rise to obstructions which prevent the cooling efficiency.
②
Check belt tension ; when finger pressure is applied to the mid-point between both pulleys.
③
Condenser fins must always be duly clean using water or an air set.
4. Checking the air conditioning system charge
(1) Check the refrigerant charge.
A. Run the engine at 1500rpm
B. Set the air conditioning system in the coldest for 5 minutes.
C.
Check sight glass for clear sight or cloudy
Caution
If the air conditioning system is operated without being charged.
The lubrication in the compressor can cause damage.
(2) Check the refrigerant with receive drier sight glass
(2) Check the refrigerant with receive drier sight glass
Bubbles or foam visible
Trouble shoot
●
●
●
●
Bubbles flow and
refrigerant gas
disappeared like a fog
flows
●
Deficient of refrigerant
Replenish
●
Nothing different temperature
between H.L pipe
●
●
●
●
High pressure of the pressure
gauge needle indicates low pressure
Abnormal
●
●
●
●
Same bubble appeared
occasionally
(1~2 sec. gap)
●
Replenish the refrigerant
●
High pressure pipe is hot and low
pressure pipe is a little cool.
●
●
●
●
H.L pressure of the pressure gauge
needle indicates low pressure.
Abnormal
84
Содержание T431
Страница 97: ...T431 T451 WIRING DIAGRAM 96...
Страница 98: ...T431 T451 WIRING DIAGRAM 97...
Страница 99: ...CABIN WIRING DIAGRAM 98...
Страница 100: ...CABIN WIRING DIAGRAM 99...
Страница 102: ...Wiring diagram of Independent PTO 101...
Страница 103: ...T431 T451 POWER TRAIN 102...
Страница 104: ...DATE JOB CARD NO NATURE OF DEFECT PARTS REPLACEMENT W CLAIM NO AND DATE REMARKS TRACTOR HISTORY CARD 103...
Страница 105: ...DATE TRACTOR HOURS NATURE TYPE OF REPAIR SERVICE CARRIED OUT SERVICE RECORD 104...
Страница 106: ...DATE JOB DONE MACHINE HOURS FUEL CONSUMPTION ENGINE OIL TOPPED UP REMARKS START END DAILY OPERATION LOG 105...
Страница 107: ...PART REPLACEMENT RECORD DATE PART DESCRIPTION QTY COST DATE PART DESCRIPTION QTY COST 106...
Страница 108: ...T431 T451 OPERATOR S MANUAL FOR TRACTORS CODE NO 1291 912 001 0 Printed on Dec 2004 Edited on March 2008 6th EDITION 107...