Installation/Servicing Tools - Toshiba RAS-M10PKVP-E Service Manual

10-2-3. Installation/Servicing Tools

Changes in the product and components
In the case of an air conditioner using R410A, in order to prevent any other refrigerant from being charged
accidentally, the service port diameter of the outdoor unit control valve (3-way valve) has been changed.
(1/2 UNF 20 threads per inch)
• In order to increase the pressure resisting strength of the refrigerant piping fl are processing diameter and size
of opposite side of fl are nuts has been changed. (for copper pipes with nominal dimensions 1/2 and 5/8)
New tools for R410A
New tools for 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 (R410A) and protector coating in
the U. S's ARI specifi ed 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, fi re 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 confi rm the port
size.
As pressure is high and gasifi cation speed is fast, it is diffi cult
to read the indicated value by means of charging cylinder, as
air bubbles occur.
The size of opposite sides of fl are 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 fl are is made by using conventional fl are tool.
Connected to conventional vacuum pump. It is necessary
to use an adapter to prevent vacuum pump oil from fl owing
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 R410A. If the vacuum pump oil
(mineral) mixes with R410A a sludge may occur and damage
the equipment.
Exclusive for HFC refrigerant.
CAUTION
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Changes