Required Tools; General Tools - Toshiba RAS-13UKV-E Service Manual

2-3. Tools

2-3-1. 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
No. Used tool
Flare tool
1
Copper pipe gauge for
adjusting projection
2
margin
Torque wrench
3
(For Ø12.7)
4 Gauge manifold
Charge hose
5
6 Vacuum pump adapter
Electronic balance for
7
refrigerant charging
Refrigerant cylinder
8
Leakage detector
9
Charging cylinder
10
(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.
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 (For Ø6.35, Ø9.52)
(3) Pipe cutter
(4) Reamer
Also prepare the following equipments for other installation method and run check.
(1) Clamp meter
(2) Thermometer
Usage
Pipe flaring
Flaring by
conventional flare
tool
Connection of flare
nut
Evacuating,
refrigerant charge,
run check, etc.
Vacuum evacuating
Refrigerant charge
Refrigerant charge
Gas leakage check
Refrigerant charge
General tools (Conventional tools can be used.)
(5) Pipe bender
(6) Level vial
(7) Screwdriver (+, –)
(8) Spanner or Monkey wrench
(9) Hole core drill (Ø65)
(3) Insulation resistance tester
(4) Electroscope
R410A
air conditioner installation
Whether
Existence of
conventional
new equipment
equipment
for R410A
can be used
Yes (Note 1)
*
Yes (Note 1)
*
Yes
X
Yes X
Yes X
Yes X
Yes X
Yes X
(Note 2) X
– 9 –
Conventional air
conditioner installation
Whether new equipment
can be used with
conventional refrigerant
¡
(Note 1)
*
X
X
¡
¡
X
¡
X
(10) Hexagon wrench
(Opposite side 5mm)
(11) Tape measure
(12) Metal saw