Refrigerant System With Manifold Gauge Set
REFRIGERANT SYSTEM INSPECTION WITH MANIFOLD GAUGE SET
This is a method in which the trouble is located by using a manifold gauge set.
Manifold Gauge Installation/Removal
Read the manifold gauge pressure when the following conditions are established:
- Temperature at the air inlet with the switch set at RECIRC is 30 - 35 °C (86 - 95 °F)
- Engine running at 1,500 rpm
- Blower speed control switch set at high
- Temperature control set at max. cool
HINT: It should be noted that the gauge indications may vary slightly due to ambient temperature conditions.
# 1 Normally Function Refrigeration System:
1. NORMALLY FUNCTIONING REFRIGERATION SYSTEM
Gauge reading:
Low pressure side: 0.15 - 0.25 MPa (1.5 - 2.5 kg/Sq.cm)
High pressure side: 1.37 - 1.57 MPa (14 - 16 kg/Sq.cm)
# 2 Moisture Present In Refrigeration System:
2. MOISTURE PRESENT IN REFRIGERATION SYSTEM
# 3 Insufficient Refrigerant:
3. INSUFFICIENT REFRIGERANT
# 4 Poor Circulation Of Refrigerant:
4. POOR CIRCULATION OF REFRIGERANT
# 5 Refrigerant Does Not Circulate:
5. REFRIGERANT DOES NOT CIRCULATE
# 6 Refrigerant Overcharge Or Insufficient Cooling Of Condenser:
6. REFRIGERANT OVERCHARGE OR INSUFFICIENT COOLING OF CONDENSER
# 7 Air Present In Refrigeration System:
7. AIR PRESENT IN REFRIGERATION SYSTEM
# 8 Expansion Valve Improperly Mounted/Heat Sensing Tube Defective (Opens Too Wide):
8. EXPANSION VALVE IMPROPERLY
MOUNTED/HEAT SENSING TUBE DEFECTIVE (OPENS TOO WIDE)
# 9 Defective Compression Compressor:
9. DEFECTIVE COMPRESSION COMPRESSOR