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2
2
)
GENERAL PRECAUTIONS
(1)
In the system, all of the pipes must be carefully cleaned before installation in order to remove dirt,
rust, and deposits.
The following cleaning procedures are recommended: Sanding, brushing, pickling, and flushing
(2)
with a solvent to remove contaminating particles.
(3)
The use of Teflon tape, hemp, or other "fillers" for joints is PROHIBITED
(4)
Verify that the pipes, fittings and connections are not subjected to mechanical stress.
(5)
Make sure that the pipes are not wound and that there are no abrasions on the surface.
3)
PRECAUTION FOR DISASSEMBLY AND ASSEMBLY
(1)
Valve piping joint should be tightened with the specified torque value. When piping, care should be
taken not to apply excess pressure to the valve. If valve is installed with incorrect torque values, it
might cause defect of spool operation, noise or vibration.
Recommended tightening torque of SAE12 (1" 1/16-12UNF) & SAE16 (1" 5/16-12UNF) is
4.3kgf·m(31lbf·ft) and SAE6 (9/16-18UNF) is 2.5kgf·m(18lbf·ft).
(2)
Care must be taken not to damage the seals by excess temperature or spatter of welding, when
welding near by the valve.
During the installation, care must be taken not to damage spool. It might cause defect of operation
(3)
such as the spool getting stuck in valve body.
(4)
Fit the rubber hosepipe for the machine, which expected vibration.
(5)
Until piping, don't remove the blinds from each port.
4)
P
P
RECAUTION FOR OPERATION
(1)
Max input pressure range should be less than 315 bar(4630psi).
(2)
Back pressure of tank port should be less than 25 bar(367psi).
(3)
The oil temperature should be between -20 ~ 80
~ 60
。 C
. because that very high viscosity of oil will be cause defect of spool operation, warm up the
machine to avoid it.
(4)
15/12- ISO4406 level of filtration is required in the hydraulic circuit for long life cycle of each
components without mechanical trouble.
5)
S
S
PECIAL TOOL
(1)
3, 8, 5, 12 mm wrench.
(2)
17, 30, 36 mm spanner.
(3)
Torque wrench adjustable from 0.9 ~ 4.3kgf·m(7 ~ 31lbf·ft).
。 C.
And ambient temperature should be from -40
6-45
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