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 conventional

Whether

 

 

 

 

 

 

new equipment

conventional equipment

 

 

 

equipment can be used

 

 

 

for R410A

 

can be used

 

 

 

 

 

 

c

Flare tool

Pipe flaring

Yes

(Note)

Yes

 

 

 

 

 

 

d

Copper pipe gauge

Flaring by

 

 

 

for adjusting

Yes

(Note)

(Note)

conventional flare tool

 

projection margin

 

 

 

 

 

 

 

 

 

 

 

 

 

 

e

Torque wrench

Tightening of flare nut

Yes

No

No

 

 

 

 

 

 

f

Gauge manifold

Evacuating, refrigerant

Yes

No

No

g

Charge hose

charge, run check, etc.

 

 

 

 

 

 

 

 

 

 

 

 

 

h

Vacuum pump adapter

Vacuum evacuating

Yes

No

Yes

 

 

 

 

 

 

i

Electronic balance for

Refrigerant charge

Yes

Yes

Yes

refrigerant charging

 

 

 

 

 

 

j

Refrigerant cylinder

Refrigerant charge

Yes

No

No

 

 

 

 

 

 

k

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

3)Pipe cutter

4)Reamer

5)Pipe bender

6)Level vial

7)Screwdriver (+, –)

8)Spanner or Monkey wrench

9)Hole core drill

10)Hexagon wrench (Opposite side 4mm)

11)Tape measure

12)Metal saw

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

1)

Clamp meter

3)

Insulation resistance tester (Megger)

2)

Thermometer

4)

Electroscope

– 15 –

Page 15
Image 15
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