Tools Specifically For R407C; For Tubing Installation Procedures - Technibel GRV79R5VAA Technical Data & Service Manual

9-3. Tools specifically for R407C

For servicing, use the following tools for R407C
Tool Distinction
Tools specifically for R407C
Tools which can be commonly • Torque wrench
used for R22 and R407C
CAUTION

9-4. For tubing installation procedures

When the tubes are connected, always apply HAB oil on the flare portions to improve the sealing of
tubing.
For details on tubing installation procedures, refer to the installation manuals attached to the indoor
NOTE
unit and outdoor unit.
• Gauge manifold
• Charging hose
• Gas leak detector
• Refrigerant cylinder
• Charging cylinder
• Refrigerant recovery unit
• Vacuum pump with anti-reverse flow ( 1)
(Solenoid valve-installed type, which prevents oil from flowing back into the unit
when the power is off, is recommended.)
• Vacuum pump ( 2) ..... can be used if the following adapter is attached.
• Vacuum pump adapter (reverse-flow prevention adapter) ( 3).
(Solenoid valve-installed adapter attached to a conventional vacuum pump.)
• Electronic scale for charging refrigerant
• Flare tool
• Bender
• Cutter, Reamer
• Welding machine, nitrogen gas cylinder
The above tools specifically for R407C must not be used for R22. Doing so will
cause malfunction of the unit.
For the above vacuum pump ( 1, 2) and vacuum pump adapter ( 3) , those for
R22-type units can be used for R407C-type. However, they must be used
exclusively for R407C and never alternately with R22.
The following is the HAB oil generally used:
Esso: ZERICE S32
Tool Name
52