2. Vacuum the system.
- A) Install the adapter on the vacuum pump.
- b) Connect the center hose of the gauge block to the vacuum pump adapter.
- V) Open both gauge block valves and turn on the vacuum pump.
- G) After at least 10 minutes, check that the low pressure gauge shows 100 kPa or more.
Note: if the pressure is low, close both gauge block valves and turn off the vacuum pump.
Check the system for leaks and troubleshoot.
- d) Close both gauge block valves and turn off the vacuum pump.
- e) Leave the system in this state for at least 5 minutes, check that the instrument readings do not change.
3. Install the charging cylinder.
Note: When working with the charging cylinder, always follow the requirements described in its instructions.
- A) Charge the charging cylinder with the required amount of refrigerant.
- b) Connect the center hose to the charging bottle.
Attention, do not open the valves on the pressure gauge block!
- V) Open the valve on the charging cylinder
- G) Press on the valve core located on the side of the gauge block. and bleed air from the central hose.
4. Check the system for leaks.
- A) Open the high pressure valve on the gauge block and charge the system with refrigerant.
- b) When the pressure on the low pressure side reaches 98 kPa, close the high pressure valve.
- V) Check the system for leaks with a leak detector.
- G) If leaks are found after repair, repeat the evacuation procedure.
5. Top up the system with refrigerant. After checking for leaks, top up the amount of refrigerant
Attention!
- Never charge the system through the high pressure side while the engine is running.
- Do not open the low pressure valve when the system is being charged with liquid refrigerant.
- A) Fully open the pressure gauge block high pressure valve.
- b) Fully charge the system, then close the high pressure valve.
Note: The sign of a fully charged system is the absence of bubbles in the service window.
6. Disconnect the gauge block from the service valves.
Note: first close the valves of the pressure gauge block!
7. Install plugs on the service valves of the cooling system.