Toshiba RAV-SM1403AT-E1 service manual Tools, General tools Conventional tools can be used

4.Tools

1.Required Tools for R410A

Mixing of different types of oil may cause a trouble such as generation of sludge, clogging of capillary, etc. Accordingly, the tools to be used are classified into the following three types.

1)Tools exclusive for R410A (Those which cannot be used for conventional refrigerant (R22))

2)Tools exclusive for R410A, but can be also used for conventional refrigerant (R22)

3)Tools commonly used for R410A and for conventional refrigerant (R22)

The table below shows the tools exclusive for R410A and their interchangeability.

Tools exclusive for R410A (The following tools for R410A are required.)

Tools whose specifications are changed for R410A and their interchangeability

				R410A	Conventional air
			air conditioner installation		conditioner installation
No.	Used tool	Usage
			Existence of	Whether conventional	Whether
			new equipment		conventional equipment
				equipment can be used
			for R410A		can be used
c	Flare tool	Pipe flaring	Yes	∗ (Note)	Yes
d	Copper pipe gauge	Flaring by
	for adjusting		Yes	∗ (Note)	∗ (Note)
		conventional flare tool
	projection margin
e	Torque wrench	Tightening of flare nut	Yes	No	No
f	Gauge manifold	Evacuating, refrigerant	Yes	No	No
g	Charge hose	charge, run check, etc.
h	Vacuum pump adapter	Vacuum evacuating	Yes	No	Yes
i	Electronic balance for	Refrigerant charge	Yes	Yes	Yes
	refrigerant charging
j	Refrigerant cylinder	Refrigerant charge	Yes	No	No
k	Leakage detector	Gas leakage check	Yes	No	Yes

(Note) When flaring is carried out for R410A using the conventional flare tools, adjustment of projection margin is necessary. For this adjustment, a copper pipe gauge, etc. are necessary.

General tools (Conventional tools can be used.)

In addition to the above exclusive tools, the following equipments which serve also for R22 are necessary as the general tools.

1)Vacuum pump. Use vacuum pump by attaching vacuum pump adapter.

2)Torque wrench

3)Pipe cutter

4)Reamer

5)Pipe bender

6)Level vial

7)Screwdriver (+, –)

8)Spanner or Monkey wrench

9)Hole core drill

10)Hexagon wrench (Opposite side 4mm)

11)Tape measure

12)Metal saw

Also prepare the following equipments for other installation method and run check.

1)	Clamp meter	3)	Insulation resistance tester (Megger)
2)	Thermometer	4)	Electroscope

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