SAFARI

AIRCONDITIONING

TROUBLE SHOOTING

In order to find the causes of troubles as quickly as

possible, it is necessary to conduct troubleshooting

using a rational method and procedure.

Before starting troubleshooting, first confirm the

symptoms as follows:

Start the engine and keep it idling. Then turn the

blower switch and A/C switch on, and check the A/

C working conditions.

Check the blower operation, the magnetic clutch

operation and A/C outlet air temperature.

After confirmation of symptoms, conduct the

following rational method of troubleshooting.

VISUAL AND AUDIO INSPECTION

This can detect simple causes of troubles.

Preparation:

1) Install the manifold gauge to the refrigeration

cycle.

2) Prepare a multimeter and gas leak detector.

CHECK MANIFOLD GAUGE PRESSURE

Inspect the refrigeration cycle pressures -

Low and High Side

Standards:

Low side - - 1.5 - 2.5 kg/cm (0.15 - 0.25 MPa)

High side - -14 -16 kg/cm (1.37- 1.57 MPa)

After the pressures to be okay, the remaining causes

are on the electrical circuit and components.

TROUBLESHOOT ELECTRICAL CIRCUIT

To make easy, first star t the blower circuit

troubleshooting and continue to the cooler circuit

troubleshooting.

a. Visual and Audio Inspection

The simplest way to detect troubles is by looking and

listening.

1. Is the drive belt loose?

2. Are the condenser fins covered with dirt and dust?

In this case, the condenser cooling effect will be

greatly reduced. As a result, the cooling capacity also

will decrease.

3. Is the air filter clogged?

A clogged air filter will reduce the air flow and’lower

the cooling capacity.

4. Can oil stains be seen in the refrigeration cycle

connections and joints?

A place that shows an oil stain indicates that the

refrigerant is leaking from that place together with

compressor oil.

5. Check the quantity of refrigerant at the sight

glass.

6. Abnormal noise

Shaft

Compressor

Magnetic clutch

Cylinder head

Worn or damage bearing

Contact between stator and rotor

Loose mounting screw on stator

Upside down blower motor

Blower motor

Crank pulley

V- Belt

Loose blower mounting

Loose Pulley

Improper tension

Wrong mounting

Idle Pulley.

Worn or damage bearing

Wrong fastening or mounting

of bracket or clamp

Wrong clearance

Other piping

parts