Toshiba RAS-M14EAV-E Required Tools, General tools Conventional tools can be used, 16

3-3. Tools

3-3-1. Required Tools

The service port diameter of packed valve of the outdoor unit in the air conditioner using R410A is changed to prevent mixing of other refrigerant. To reinforce the pressure-resisting strength, flare processing dimensions and opposite side dimension of flare nut (For Ø12.7 copper pipe) of the refrigerant piping are lengthened.

The used refrigerating oil is changed, and mixing 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	Whether new equipment
					conventional
			new equipment			can be used with
					equipment
			for R410A			conventional refrigerant
					can be used
1	Flare tool	Pipe flaring	Yes		*(Note 1)	!
	Copper pipe gauge for	Flaring by			*(Note 1)	*(Note 1)
2	adjusting projection	conventional flare	Yes
	margin	tool
3	Torque wrench	Connection of flare	Yes		X	X
	(For Ø12.7)	nut
4	Gauge manifold	Evacuating,
		refrigerant charge,	Yes		X	X
	Charge hose
5		run check, etc.
6	Vacuum pump adapter	Vacuum evacuating	Yes		X	!
7	Electronic balance for	Refrigerant charge	Yes		X	!
	refrigerant charging
8	Refrigerant cylinder	Refrigerant charge	Yes		X	X
9	Leakage detector	Gas leakage check	Yes		X	!
10	Charging cylinder	Refrigerant charge	(Note 2)		X	X

(Note 1) 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.

(Note 2) Charging cylinder for R410A is being currently developed.

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	(5)	Pipe bender	(10)	Hexagon wrench
	Use vacuum pump by	(6)	Level vial		(Opposite side 4mm)
	attaching vacuum pump adapter.	(7)	Screwdriver (+, –)	(11)	Tape measure
(2)	Torque wrench (For Ø6.35, Ø9.52)
		(8)	Spanner or Monkey wrench	(12)	Metal saw
(3)	Pipe cutter	(9)	Hole core drill (Ø65)
(4)	Reamer

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

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

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