MovinCool Office Pro W20 Service Manual - Manual (Page 69)

Repair Section
69
11.3 Charging the System with R-410A Refrigerant
• Always ensure that the refrigeration system has been properly evacuated before charging with
the specified amount of R-410A.
• Equipment 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
• 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 104 °F (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.
ILL00084-00
Step 1
Step 5
Step 6
Step 4
Step 3
Step 2
Connect manifold gauge.
1) Evacuate the system.
• 15 minutes or more.
• 30 inHg (100 kPa) or more of vacuum.
2) Stop evacuating the system.
• Leave for 5 minutes.
3) Check the vacuum.
When leak is found,
repair the connection
or components.
Charge the system with R-410A.
• See “Technical Specifications” for the specified amount.
Remove manifold gauge.
Test the system for leaks.
Connect to refrigerant source.