Mitsubishi Heavy Industries SRK20ZG-S Tech Manual page 86

b) Charge hose (pressure resistant hose for fluorocarbon) and packing
• It is 1/4B in thickness and available in various lengths, etc.
• Use a hose whose pressure resisting performance is higher than 5.2 MPa (52 kg/cm
• Generally, a setting fixture is provided only on one end.
(4) Gauge manifold
• The most important service tool for refrigeration and air conditioner.
• Widely used when charging/recovering R410A while checking gas pressure.
Compound gauge
(5) Tube piercing valve
a) A tool used to make a hole for recovery in the copper pipe when recovering R410A from equipment which has no port for
charging or recovering gas. Various types are available on the market and given various names.
b) As the piercing edge tends to wear, it is necessary to treat this valve as semi-expendables.
c) As vacuum rises, air tends to be inhaled from the hole. So, care must be exercised.
(6) Vacuum pump
Used to evacuate the recovering equipment and recovering cylinder.
Pressure gauge
Stop valve
Piercing pliers
Charge hose
Piercing valve
Exhaust port
Suction port
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2
G).
Hose
packing
Gauge
manifold
Setting
fixture