AIR CONDITIONER — REFRIGERANT SYSTEM SERVICE PROCEDURES

G-50prose procedure

REFRIGERANT SYSTEM SERVICE PROCEDURES

1
Fully close the valves of the manifold gauge.
2
Connect charging hoses to the high- and low-pressure side joints of the manifold gauge.
3
Connect quick couplers to the ends of the charging hoses.
4
Remove the caps from the charging valves of the high- and low-pressure side cooler pipes.
5
Connect the quick couplers to the charging valves of the cooler pipes.

1
Install the manifold gauge set.
2
Connect the tap pin side of the charging hose to the air purge valve of the manifold gauge.
3
Connect the vacuum pump hose to the center joint of the manifold gauge.
4
Connect the vacuum pump hose to the vacuum pump.
5
Connect can puncture valves to a 4-way joint.
6
Fully open the can puncture valves and connect service cans to the valves.
Regular amount of refrigerant: 750g {26.5 oz}
7
Fully close any can puncture valve that is not connected to a service can.
8
Connect the 4-way joint to the charging hose that is connected to the gauge set air purge valve.
9
Open all the valves of the manifold gauge.
10
Start the vacuum pump and let it operate for 15 minutes.
11
After 15 minutes, verify that the high- and low-pressure-side readings of the manifold gauge are at -101 kPa {-760 mmHg, -29.9 inHg}. Close each valve of the manifold gauge.
12
Stop the vacuum pump and wait for about 5 minutes.
13
After 5 minutes, check the low-pressure-side reading of the manifold gauge. If the reading has changed, check for leaks and then repeat from step 9. If reading has not changed, go to step 14.
14
Open the service cans by using the can puncture valves.
15
Open the high-pressure side valve to the manifold gauge and charge with refrigerant until the low-pressure-side reading is at 100 kPa {1 kgf/cm2, 10 psi}.

Specification	Value
Regular amount of refrigerant	750g {26.5 oz}

Regular amount of refrigerant

750g {26.5 oz}