Panasonic CW-C180BN - Refrigeration Cycle Diagrams; Performance Evaluation

CW-C180BN
– 5 –
REFRIGERATION CYCLE DIAGRAM
2
6
B
C
A
5
D
CW-A180BN
CW-A240SN
ITEM PRESSURE (kg/cm
2
) TEMP. (°C)
A 15.5 ~ 19.0 55 ~ 70
B 4.0 ~ 4.5 0 ~ 5
C 15.0 ~ 18.5 37 ~ 47
D 15.4 ~ 18.9 45 ~ 55
* Indoor temp. at 21°C (DB), and Outdoor at 7°C (DB), 6°C (WB).
ITEM PRESSURE (kg/cm
2
) TEMP. (°C)
A 17.5 ~ 21.0 75 ~ 90
B 17.2 ~ 20.7 38 ~ 45
C 5.5 ~ 6.1 7 ~ 15
D 5.3 ~ 5.8 5 ~ 15
* Indoor temp. at 27°C (DB), 19°C (WB) and Outdoor at 35°C , 24°C.
1
4
3
SUCTION & DISCHARGE AIR
CURRENT DETERMINATION REMEDY
TEMPERATURE DIFFERENCE
12°C and over As specified • Nothing wrong • None
12°C and over Higher than specified • Nothing wrong, outdoor temperature • None
is high
• Something is preventing heat • Clean air-filter
radiation at indoor heat-exchanger
Under 12°C Lower than specified • Nothing wrong, outdoor temperature • None
is too low
• Something is preventing heat • Improve heat radiation at outdoor
radiation at outdoor heat-exchanger heat-exchanger
• Leakage of refrigerant • Locate & repair leak
• Refrigerant system is blocked • Flush refrigeration leak
Under 12°C Higher than 150% of specified • Compressor defect • Replace compressor
• Compressor capacitor defect • Replace compressor capacitor
1 Compressor
2 4-Way Valve
3 Evaporator
4 Capillary Tube
5 Strainer
6 Condenser
7 Accumulator
HEATING
COOLING
ITEM PRESSURE (kg/cm
2
) TEMP. (°C)
A 18.5 ~ 22.0 80 ~ 95
B 18.2 ~ 21.7 44 ~ 52
C 5.7 ~ 6.3 7 ~ 15
D 5.5 ~ 6.0 6 ~ 16
1 Compressor
2 Condenser
3 Strainer
4 Capillary Tube
5 Evaporator
6 Accumulator
CW-C180BN
CW-C240SN
34
2
7
6
C
A
1
B
5
D
HEATING
COOLING
* Note: Room air humidity is relatively higher, the Temp. difference will be smaller.
* Indoor temp. at 27°C (DB), 19°C (WB) and Outdoor at 35°C , 24°C.
SUCTION & DISCHARGE AIR
CURRENT DETERMINATION REMEDY
TEMPERATURE DIFFERENCE
8°C and over As specified Nothing wrong • None
8°C and over Higher than specified Nothing wrong, outdoor temperature is • Improve heat radiation
too high, heat radiation is not efficient
Under 8°C Higher than specified but below Something is preventing heat radiation • Excessive amount of refrigerant
150% of specified • Improve heat radiation
Under 8°C Lower than specified Leakage of refrigerant or refrigerant • Locate repair leak
system is blocked • Flush refrigeration cycle
Under 8°C Higher than 150% of specified Compressor defect or compressor • Replace the compressor or
capacitor defect compressor capacitor
HEATING
AIR CONDITIONER PERFORMANCE EVALUATION
COOLING