2. Maintenance
2-12
A130986
2.8
Maintenance and Adjustment of Pressure Control Valve
<Procedure>
①
If the discharge pressure drops lower than
51psi(0.35MPa)[3.5bar] during operation, replace
the spring
“
3
”
of pressure control valve. After
confirming that the compressed air in the pipes is
completely relieved, disassemble the valve.
②
When O-ring
“
1
”
and
“
2
”
are found deteriorated
and/or hardened, replace them even before
periodical interval of replacement.
③
When the piston
“
4
”
is found worn or damaged,
replace it.
After replacement, run the machine to check its
function, air-leak or any disorder.
Setting pressure:
58.2 psi(0.4
MPa)[4 bar]
④
When the indicator shows excessively higher
pressure, you will find that the piston does not move
smoothly due to foreign material and rust stuck
inside valve. In such a case, disassemble the
component for checking and cleaning.
When reinstalling it, check and confirm that there are no foreign matters and dust in
O-ring groove and on the O-ring. Then, coat O-ring with grease slightly.
Use CALTEX MULTIFAK EP1 grease or equivalent. Grease of poor quality will
deteriorate the material.
1
2
3
4
+14.6 +0.1
+1
-
1.5
-
0.05
-
0.5
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