Toshiba RAV-SM2804AT7 service manual General tools Conventional tools can be used, Used tool Usage

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 conven-		Whether conventional
			new equipment	tional equipment
						equipment can be used
			for R410A	can be used
Q	Flare tool	Pipe flaring	Yes	∗	(Note)	Yes
R	Copper pipe gauge for	Flaring by conventional	Yes	∗	(Note)	∗ (Note)
	adjusting projection margin	flare tool
S	Torque wrench	Tightening of flare nut	Yes		No	No
T	Gauge manifold	Evacuating, refrigerant	Yes		No	No
U	Charge hose	charge, run check, etc.
V	Vacuum pump adapter	Vacuum evacuating	Yes		No	Yes
W	Electronic balance for	Refrigerant charge	Yes		Yes	Yes
	refrigerant charging
X	Refrigerant cylinder	Refrigerant charge	Yes		No	No
Y	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	8)	Spanner or Monkey wrench
3)	Pipe cutter	9)	Hole core drill
4)	Reamer	10)	Hexagon wrench (Opposite side 4mm)
5)	Pipe bender	11)	Tape measure
6)	Level vial	12)	Metal saw
7)	Screwdriver (+, –)

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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