Komatsu PC210-10 DEMOLITION BASE SPEC., Руководство по эксплуатации и техническому обслуживанию

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MACHINE READY FOR INSTALLATION OF ATTACHMENT ATTACHMENTS AND OPTIONS
6–18
HYDRAULIC CIRCUIT
HYDRAULIC CIRCUIT:PC220_KU-RA18-043K00A
NOTICE
q
The return circuit when a breaker is installed must return directly to the return filter, so do not use it in
the mode other than B mode.
q
The standard set pressure of the safety valve of the service valve is 20.6 MPa {210 kg/cm
2
} if you
select B mode set at the shipment from the plant and it becomes 27.4 MPa {280 kg/cm
2
} when ATT/P or
ATT/E mode is selected. Depending on the attachment, it may be necessary to adjust the pressure.
Ask your Komatsu distributor for the adjustment.
SWITCHING THE HYDRAULIC CIRCUIT
q
Depending on the type of attachment, set the working mode on the monitor as follows.
q
The hydraulic circuit and the set pressure of the safety valve in the service valve switch according to the work-
ing mode selected.
Depending on the attachment, it is necessary to change the oil flow in the service circuit.
For details of setting the oil flow, see "ATTACHMENT OPERATIONS (6-28)".
SWITCHING OF BREAKER AND GENERAL ATTACHMENT
q
When optional attachment is installed and working mode is set to B mode
(1) Breaker circuit (one-way circuit) is formed.
(2) Hydraulic oil flowing through breaker circuit passes through additional filter for breaker.
(3) Relief valve is set to low pressure.
When shipped from factory: 20.6 MPa (210kg/cm
2
)
(4) Maximum oil flow can be adjusted in user mode.
q
If ATT/P or ATT/E mode is turned on when the optional attachment is installed
(1) Crusher circuit (2-way circuit) is formed.
(2) Hydraulic oil flowing through crusher circuit does not pass through additional filter for breaker.
(3) Relief valve is set to high pressure.
When shipped from factory: 27.4 MPa (280 kg/cm
2
)
(4) Maximum oil flow can be adjusted in user mode.
Attachment Working mode Hydraulic circuit
Set pressure of
safety valve of ser-
vice valve
Breaker or other attachment
with one-way circuit
B mode
Return circuit automatically
becomes the circuit that does not
pass through control valve
When shipped from
factory:
20.6 MPa {210 kg/
cm
2
}
Crusher or other attachment
with two-way circuit
ATT/P or ATT/E
mode
Return circuit automatically
becomes the circuit that does not
pass through control valve
When shipped from
factory:
27.4 MPa {280kg/
cm
2
}