AirMan PDS185S-6E1, Руководство по обслуживанию

Страница: 32 / 103

2. Maintenance
2-13
2.9 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 draining compressor oil, remove bolt
“
1
”
and then the pellet assembly
“
2
”
of the by-pass
valve and O-ring
“
3
”
.
④
Replace the pellet assembly
“
2
”
and O-ring
“
3
”
by new ones. Install O-ring
“
3
”
coated thinly with
compressor oil.
⑤
Supply compressor oil through the filler port provided on the receiver tank.
(Refer to instruction manual)
⑥
Start operation and check the function of by-pass valve.
(It functions well when delivery air temperature will not rise abnormally.)
PC14009E
Actuating temperature By-pass valve fully closing temperature
180
±
37°F (82
±
3
℃
) 192
±
36°F (89
±
2
℃
)
To oil filter
(when the oil
temperature
is low)
To oil cooler
(when the oil
temperature
is high)
From separator
receiver tank
1 3 2
Discount-Equipment.com