Mitsubishi 6M60-TL, Руководство по обслуживанию

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2.2 Regeneration of desiccant
• When the air pressure in the air tank
reaches the upper threshold level, sig-
nal pressure from the air pressure
governor causes the valve in the air
dryer’s control port to open. As a re-
sult, the pressure in the case cleans
the oil filter and pushes the water and
oil out into the atmosphere.
• Following the rapid drop in pressure,
dry air in the purge chamber flows
through the orifice, expands, and be-
comes super-dry. As this super-dry air
flows backward through the case, it
carries moisture from the desiccant
out into the atmosphere, thereby com-
pleting the desiccant’s regeneration.
• During the regeneration process, the
check valve is closed. Thus, the signal
pressure from the air pressure gover-
nor continues to act upon the control
port and the valve remains open. Air
from the air compressor thus flows
through the valve, through the silenc-
er, and out into the atmosphere.
• The regeneration process continues
until air consumption causes the pres-
sure in the air tank to decrease to the
governor lower threshold level.
2.3 Operation when tank pressure
reaches upper threshold level
• Air pressure from the air tank continu-
ously acts upon the piston.
• When the tank pressure increases to
such a level that it overcomes the
spring, it pushes the piston upward
such that the valve closes.
• When the tank pressure increases fur-
ther and exceeds the upper threshold
level, the piston is pushed upward fur-
ther such that the exhaust stem opens
the inlet valve. Air pressure from the
air tank thus flows out of the air pres-
sure governor as signal pressure,
causing the valve to open. Regenera-
tion of the air dryer’s desiccant thus
begins.