Repair Section
58
9.3 Preparing the System for Charging with R-410A Refrigerant
• Always ensure that the refrigeration system has been properly evacuated before charging with
the specified amount of R-410A.
• Equipments is for R-410A only.
• Liquid charge (no gas charge).
• Make sure not to use more than 90 % of the initial weight of R-410A in the cylinder.
WARNING
• Any repair to the system should be performed by a licensed professional only.
• When handling refrigerant (R-410A), the following precautions should always be
observed:
- Always wear proper eye protection while handling refrigerant.
- Maintain the temperature of the refrigerant container below 40 °C.
- Perform repairs in a properly ventilated area. (Never in an enclosed environment.)
- Do not expose refrigerant to an open flame.
- Never smoke while performing repairs, especially when handling refrigerant.
- Take caution so that the liquid refrigerant does not come in contact with the skin.
• If liquid refrigerant strikes eye or skin:
- Do not rub the eye or the skin.
- Splash large quantities of cool water on the eye or the skin.
- Apply clean petroleum jelly to the skin.
- Go immediately to a physician or to a hospital for professional treatment.
ILL00754-00
Step 1
Step 5
Step 6
Step 4
Step 3
Step 2
Inspect the refrigerant system and test for leaks using
standard test methods in accordance with local regulations.
1) Evacuate the system.
• To less than 117 Pa (absolute).
2) Stop evacuating the system.
• Leave for at least 60 minutes.
3) Check the vacuum.
•
A rise of more than 13 Pa may indicate a leak or moisture.
•
If necessary, repair the system and repeat steps 1 and 2.
When a leak is found,
repair the connection
or components.
Remove manifold gauge.
Check the operation of the unit.
Charge the system with R-410A.
•
See “Technical Specifications” for the specified amount.
Connect to refrigerant source.
