Symptoms And Actions; Pressure Measurement Of Low Pressure Side; Short Of Refrigerant; Closing Of Refrigerant System - Hyundai HSH-I073NBE Service Manual

• Pressure measurement of low pressure side

As shown in Figure above, connect the manifold gauge to the low pressure (gas side) tube of condenser and mea-
sure the pressure.

2.1.3 Symptoms and actions

1) Short of refrigerant

The short of refrigerant appears in a slightly different symptom as (1) no refrigerant or (2) short of refrigerant.
(1) Symptoms
(2) Judgement method
(3) Actions:

2) Closing of refrigerant system

(1) Symptoms
(2) Judgement method
Air Conditioner Service Manual
: The temperature difference of suction-discharge air is 8°C or less, the running
current is less than the rated current, and the pressure of low pressure side is
low. (These are symtoms changed by short of refrigerant.)
: Frost is formed from the capillary tube outlet to the evaporator inlet.
The suction pipe of compressor is not cold. (The temperature of suction pipe is
similar to the outdoor temperature.)
The pressure of low pressure side in cooling is 4kg/cm
temperature : 30°C or over)
Refrigerant oil comes out from the evaporator-condenser connections and each
welded portion. (Finding the gas leak place)
Find the gas leak area. (Check at balance pressure of 5kg/cm
Charge refrigerant to the specified level.
Check for gas leak.
: If the refrigerant system of strainer or capillary tube is closed, pressure drops at
the outlet of closed area, and refrigerant evaporates to form and attach dew or
frost.
The running current is less than the rated current, and the pressure of low pres-
sure side is lower than the normal. If completely closed, the pressure of low
pressure side is to be 0kg/cm
: The same symptoms as the short of refrigerant appears, and the same phenome-
non occurs even if refrigerant is sealed.
It takes 3 min. or more for refrigerant to balance.
If running in the condition, the temperature of discharge gas becomes higher, the
refrigerant oil is deteriorated, and the life time may be affected.
(Compressor motor may be burnt.)
Closed Closed
.G as time goes by.
2
71
.G or less. (Surrounding
2
.G or over.)
2