Checking And Charging Refrigerant Cycle; Checking With Manifold Gauge - wsm M7060 Workshop Manual

M6060, M7060, WSM
5. CHECKING AND CHARGING REFRIGERANT
CYCLE

[1] CHECKING WITH MANIFOLD GAUGE

IMPORTANT
• The gauge indications described in the following testing are those taken under the same condition, so it
should be noted that the gauge readings will differs somewhat with the ambient conditions.
Condition
• Ambient temperature: 30 to 35 °C (86 to 95 °F)
• Engine speed: Approx. 1500 min
• Temperature control lever: Maximum cooling position
• Blower switch: HI position
-1
(rpm)
Manifold Gauge Connecting and Test Preparation
1. Close the manifold gauge HI and LO pressure side valve (3), (4)
tightly.
2. Connect the charging hose (red) (2) to the HI pressure side
charging valve (7) and connect the charging hose (blue) (1) to
the LO pressure side charging valve (6).
NOTE
• Be sure to drive out the air in the charging hoses at the
manifold gauge connection end by utilizing the refrigerant
pressure in the refrigerating cycle.
3. Start the engine and set at approx. 1500 min
4. Turn on the A/C switch and set the temperature control dial to
maximum cooling position.
5. Set the blower switch to HI position.
(1) Charging Hose (Blue)
(2) Charging Hose (Red)
(3) HI Pressure Side Valve
(4) LO Pressure Side Valve
Normal Operating
If the refrigerating cycle is operating normally, the reading at the
LO pressure side (1) should be generally by around 0.15 to
0.19 MPa (1.5 to 2.0 kgf/cm
pressure side (2) around 1.3 to 1.6 MPa (13 to 17 kgf/cm
240 psi).
Gas pressure
(1) LO Pressure Side
9-S13
9Y1210828CAS0016US0
(5) Manifold Gauge
(6) LO Pressure Side Charging Valve
(7) HI Pressure Side Charging Valve
9Y1210828CAS0017US0
2
, 22 to 28 psi) and that at the HI
Low 0.15 to 0.19 MPa
pressure 1.5 to 2.0 kgf/cm
Factory
side 22 to 28 psi
specifica-
High 1.3 to 1.6 MPa
tion
pressure 13 to 17 kgf/cm
side 190 to 240 psi
(2) HI Pressure Side
9Y1210828CAS0018US0
CABIN
-1
(rpm).
2
, 190 to
2
2
KiSC issued 08, 2013 A