Tools; Required Tools For R410A; General Tools - Toshiba Super MMU-AP0091H Service Manual

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
No. Used tool
Q
Flare tool
Copper pipe gauge for
R
adjusting projection
margin
S
Torque wrench
T
Gauge manifold
U
Charge hose
V
Vacuum pump adapter
Electronic balance for
W
refrigerant charging
X
Refrigerant cylinder
Y
Leakage detector
Y
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.
(2) Torque wrench
(3) Pipe cutter
(4) Reamer
(5) Pipe bender
(6) Level vial
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.)
R410A
air conditioner installation
Existence of Whether conven-
new equipment tional equipment can
for R410A be used
Yes *(Note 1)
Yes *(Note 1)
Yes No
Yes No
Yes No
Yes Yes
Yes No
Yes No
(Note 2) No
(7) Screwdriver (+, –)
(8) Spanner or Monkey wrench
(9) Hole core drill
(10) Hexagon wrench (Opposite side 4mm)
(11) Tape measure
(12) Metal saw
(3) IInsulation resistance tester
(4) Electroscope
8
Conventional air
conditioner installation
Whether new equipment
can be used with
conventional refrigerant
Yes
*(Note 1)
No
No
Yes
Yes
No
Yes
No