New Tools For R32 (R410A); Installation Procedure - Toshiba RAS-4M27U2AVG-E Service Manual

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New tools for R32 (R410A)

New tools for
R32 (R410A)
Gauge manifold
Charge hose
Electronic balance
for refrigerant charging
Torque wrench
(nominal diam. 1/2, 5/8)
Flare tool (clutch type)
Gauge for projection
adjustment
Vacuum pump adapter
Gas leakage detector
• Incidentally, the "refrigerant cylinder" comes with the refrigerant designation R32 (R410A) and protector coating
in the U.S's ARI specified rose color (ARI color code: PMS 507).
• Also, the "charge port and packing for refrigerant cylinder" require 1/2 UNF 20 threads per inch corresponding to
the charge hose's port size.
• Incorrect wiring connection may cause electrical parts to burn out.
• Be sure to comply with local regulations/codes when running the wire from outdoor unit to indoor unit.
(Size of wire and wiring method etc.)
• Every wire must be securely connected.
• If incorrect or incomplete wiring is carried out, fire or smoke may result.
• Prepare the power supply for the exclusive use of the air conditioner.
Applicable to R22 model
×
×
×
— —
×
As pressure is high, it is impossible to measure by means of
conventional gauge. In order to prevent any other refrigerant from
being charged, each port diameter has been changed.
In order to increase pressure resisting strength, hose materials and
port size have been changed (to 1/2 UNF 20 threads per inch).
When purchasing a charge hose, be sure to confirm the port size.
As pressure is high and gasification speed is fast, it is difficult to
read the indicated value by means of charging cylinder, as air
bubbles occur.
The size of opposite sides of flare nuts have been increased.
Incidentally, a common wrench is used for nominal diameters 1/4
and 3/8.
By increasing the clamp bar's receiving hole, strength of spring in
the tool has been improved.
Used when flare is made by using conventional flare tool.
Connected to conventional vacuum pump. It is necessary to use
an adapter to prevent vacuum pump oil from flowing back to the
charge hose. The charge hose connecting part has two ports-one
for conventional refrigerant (7/16 UNF 20 threads per inch) and
one for R32 (R410A). If the vacuum pump oil (mineral) mixes with
R32 (R410A) a sludge may occur and damage the equipment.
Exclusive for HFC refrigerant.
CAUTION
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FILE NO. SVM-18052
Changes