9-3. Tools Specifically for R410A
For servicing, use the following tools for R410A
Tool Distinction | Tool Name | |
|
| |
| Gauge manifold | |
| Charging hose | |
| Gas leak detector | |
| Refrigerant cylinder | |
| Charging cylinder | |
| Refrigerant recovery unit | |
Tools specifically for R410A | Vacuum pump with | |
| (Solenoid | |
| unit when the power is off, is recommended.) | |
| Vacuum pump (*2)...can be used if the following adapter is attached. | |
| Vacuum pump adapter | |
| (Solenoid | |
| Electronic scale for charging refrigerant | |
| Flare tool | |
|
| |
| Bender | |
Tools which can be com- | Torque wrench | |
| ||
monly used for R22, | Cutter, reamer | |
R407C, and R410A | ||
Welding tool, nitrogen gas cylinder | ||
| ||
|
|
CAUTION
The above tools specifically for R410A must not be used for R22 and R407C. Doing so will cause malfunction of the unit.
For the above vacuum pump (*1, *2) and vacuum pump adapter (*3), those for
To prevent other refrigerants (R22, R407C) from being mistakenly charged to this unit, shape and external diameter of the service port screw has been altered.
<External diameter of service port> R410A : 5/16" R22, R407C : 1/4"
9-4. Tubing Installation Procedures
When the tubes are connected, always apply HAB oil on the flare portions to improve the sealing of tubing. The following is the HAB oil generally used:
Esso: ZERICE S32
NOTE For details on tubing installation procedures, refer to the installation manuals attached to the indoor unit and outdoor unit.
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