Mitsubishi Electric R410A Manual page 16

FlaringTool
A suitable Flaring tool to be used so as
not to compromise the integrity of the
copper when flared.
Torque W rench
Torque wrenches must be used at all
times to tighten flares in accordance with
manufacturers guidelines.
O xygen free nitrogen for brazing
O FN to be used at all times during
brazing to prevent oxidation within the
copper pipework.
O xygen free nitrogen for strength and leak test
O FN to be used for strength and leak
testing with the higher pressure regulator.
Refrigerant charging weighing scales
Any additional refrigerant required for
the installed system must be weighed in
the liquid phase using charging scales.
Suitable vacuum measuring gauges
To determine accurately the pressure in the system and whether the desired vacuum has been
attained, a vacuum or torr meter is indispensable. A professional evacuation requires such
an instrument.
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