Tools - Toshiba RAS-13NKV-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 ∅12.70 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
1
Flare tool
2
Copper pipe gauge
for adjusting projection conventional flare
margin
3
Torque wrench
(For ∅12.70)
4
Gauge manifold
5
Charge hose
6
Vacuum pump adapter Vacuum evacuating
Electronic balance for
7
refrigerant charging
8
Refrigerant cylinder
9
Leakage detector
!
Charging cylinder
(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. (6) Level vial
(2) Torque wrench (For ∅6.35)
(3) Pipe cutter
Also prepare the following equipments for other installation method and run check.
(1) Clamp meter
(2) Thermometer
Usage Existence of
new equipment
for R410A
Pipe flaring
Flaring by
tool
Connection of
flare nut
Evacuating,
refrigerant charge,
run check, etc.
Refrigerant charge
Refrigerant charge
Gas leakage check
Refrigerant charge (Note 2)
General tools (Conventional tools can be used.)
(4) Reamer
(5) Pipe bender
(7) Screwdriver (+, –)
(8) Spanner of Monkey wrench
(3) Insulation resistance tester
(4) Electroscope
– 10 –
R410A air conditioner
installation
Whether
conventional
equipment can
be used
Yes *(Note 1)
Yes *(Note 1)
Yes
Yes
Yes
Yes
Yes
Yes
(9) Hole core drill (∅65)
(10) Hexagon wrench
(11) Tape measure
(12) Metal saw
FILE NO. SVM-05027
Conventional air
conditioner installation
Whether new equipment
can be used with
conventional refrigerant
*(Note 1)
(Opposite side 5 mm)