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restricted. 1 - Discharge system
2 - Rowepioleacifenreeoceesivsearry/)d.rier
3 - completely. (Repeat Ry(steemp
eat 30
minutes evacuating three times).
4 - Check oil level.
5 - Recharge system.
 0 0   
    
 FAULTY
(Th
„..-....N,
t 1
I • ,
- CONDENSER
- No cooling action : engine may overheat.
- Bubbles appear in sight glass or drier
Suction line is very hot. - Condenser is often found not functioning well. - Check condenser for dirt accumulation.
- Check for refrigerant overcharge.
If pressure remains high in spite of all above actions taken, remove and inspect the condenser for possible oil clogging.
 0 0   
    
 d„..--...‘
vi
rr HIGH
40 PRESSURE
LINE BLOCKED
- Insufficient cooling.
- Frosted high pressure liquid line. - Drier clogged, or restriction
high p line.
in hig pressure line 1 - Discharge system.
2 - Remove receiver / drier and replace it.
3 - Check oil level.
4 - Recharge system.
 0 0   
 - -   

Performance test - Diagnoses chart
Table 502 (3/4)
ABAA
Validity : KEITH 21-55-00Page 506
(CA) AUG 01
 
CONDITION PROBABLE
CAUSE CORRECTIVE
ACTION
 7----
,„,---.44,
1 FAULTY
010 I% ti
COMPRESSOR
- Insufficient cooling. - Internal problem in compressor or damaged gasket and valve. 1 - Discharge system.
check
2 - compressor.
saonrd
3 -Repair compreosrsorreplace
4 - Check oil level.
5 - Replace receiver / drier.
6 - Recharge system.
 0 0   
 -1
r•--...‘
t
1
 TOO MUCH
ifi) OIL IN SYSTEM
- Insufficient cooling. -Too much oil circulates with refrigerant, causing the cooling capacity of the system to be reduced. -Correct oil level
 0 0   

Performance test - Diagnoses chart
Table 502 (4/4)
 
PAGE INTENTIONALLY LEFT BLANK
ABM
Validity : KEITH 21 55-00Page 508
(CA) AUG 01
 
VAPOR CYCLE COOLING SYSTEM
INSPECTION / CHECK
CAUTION : DURING SERVICING, USE CAUTION TO KEEP AIR AND MOISTURE FROM GETTING INTO REFRIGERANT. WHEN AIR ENTERS THE SYSTEM, ALL REFRIGERANT MUST BE EVACUATED FROM SYSTEM PRIOR TO CHARGING NEW REFRIGERANT. AIR IN REFRIGERANT HAS THE FOLLOWING DELETERIOUS EFFECTS :
SINCE THE CONDENSATION TEMPERATURE OF THE AIR IS EXTREMELY LOW, THE AIR WILL NOT BE CONDENSED WHEN REFRIGERANT GAS IS CONDENSED IN THE CONDENSER, AND THE AIR WILL THUS REMAIN IN GASEOUS FORM. CONSEQUENTLY, THE EFFECTIVE THERMAL TRANSMISSION AREA OF THE CONDENSER WILL BE REDUCED AND THE AMOUNT OF REFRIGERANT GAS TO BE CONDENSED WILL BE REDUCED.
　
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