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Chapter 8 PERIODIC INSPECTION AND MAINTENANCE PROCEDURES
Air Tank - Inspect Safety Valve Operation
1. Open the inlet valve of air tank and air pressure
gauge valve.
2. Fill air with the air compressor.
3. Check to make sure the safety valve opens to re-
lieve pressure when the air pressure value in the
tank is over the standard.
Pressure in the air tank: 2.94 MPa{30 kgf/cm
2
} [427
psi]
Safety valve operating pressure (open): 3.14 MPa
{32 kgf/cm
2
} [455 psi]
Safety valve operating pressure (close): 2.84 MPa
{29 kgf/cm
2
} [412 psi]
4. If defective in safety valve operation, contact a
dealer of Mitsubishi Heavy Industries, Ltd.
Note: If the specification of air tank differs from the
contents of this operation manual, follow the
manufacturer's operation manual.
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