AirMan PDS185S-6C1, Руководство по обслуживанию

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2. Maintenance
2-10
2.12 Clean inside of Fuel Tank
●
Condensate is caused and accumulated at the bottom of fuel tank, owing to churning of dust or dirt
mixed when fuel oil is fed and water drop caused while fuel oil tank is used for a long time. When
any condensate is found afloat and fuel filter gets clogged too fast, fuel oil tank should be cleaned
after condensate is removed from fuel oil tank even before the specified cleaning interval time.
＜
Procedure
＞
①
Open drain valve to remove fuel oil from fuel tank.
②
Dismantle the door and side covers of bonnet.
③
Remove fuel pipes and wires connected to fuel tank.
④
Remove belt holding fuel tank and remove tank.
⑤
Insert cleansing nozzle through fuel filler port or
drain port for cleaning tank.
⑥
After cleaning job is finished, install fuel tank from
which water or the like should be completely removed.
2.13 Change of pellet assembly of by-pass valve
●
By-pass valve fitted on this unit is of full bore type. While the unit is used for normal operation, it
is not to perform periodical replacement of the Inner pellet assembly, but when such trouble as
excessive rise of compressor oil temperature, it becomes necessary to replace it, in accordance with
the following procedures.
＜
Procedure
＞
①
First stop the unit and make sure that there is no
residual pressure left in the separator receiver tank.
②
After checking and confirming that the temperature
of compressor oil has become amply low, open drain
valves on separator receiver tank and oil cooler to
empty compressor oil completely.
③
After having drained oil completely, remove the pellet
assembly of by-pass valve and O-ring.
④
Replace the pellet assembly and O-ring by new ones.
Install O-ring coated thinly with compressor oil.
⑤
Supply compressor oil through the filler port provided
on the receiver tank. (Refer to operation manual.)
⑥
Start operation and check the function of by-pass
valve. (It functions well when delivery air
temperature will not rise abnormally.)
To Oil filter
(When oil
temperature is low)
Pellet ASS’Y
To oil cooler
(When oil temperature
is high)
O-ring
From separator
receiver tank
O-ring
PC08023
Actuating
temperature
By-pass valve fully
closing temperature
180
±
37°F
(82
±
3
℃
)
192
±
36°F
(89
±
2
℃
)
PC08022
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