Moog D633-A Series, Руководство пользователя

Страница: 56 / 88

9 Start-up Filling and flushing the hydraulic system
© Moog GmbH User Manual "D633-A Series" (CA80942-001; Version 1.0, 12/08) 48
9.3 Filling and flushing the hydraulic system
Procedure for filling and
flushing the hydraulic
system
Procedure:
1. Depressurize the hydraulic system.
2. Fill the hydraulic system in accordance with the instructions of the manu-
facturer and the operator of the machine.
Because new hydraulic fluid is contaminated, the hydraulic system must
be filled via a filling filter with a filter fineness of at least
β
10
≥
75 (10 µm
(0.00039 in) absolute).
3. Replace existing filter elements with flushing elements in accordance with
the instructions of the manufacturer and the operator of the machine.
4. Remove the servovalve.
Ö
Chapter "11.1 Removing the valves", page 57
5. Instead of the servovalve, you must install a flushing plate or, if allowed by
the hydraulic system, a switching valve.
6. Carefully flush the hydraulic system in accordance with the instructions of
the manufacturer and the operator of the machine. Observe the following
when doing so:
– In order to obtain the best possible flushing effect, make sure the hy-
draulic fluid reaches operating temperature.
– Observe the minimum flushing time t:
– End the flushing process when at least the cleanliness level 18/15/12
as specified in ISO 4406 is achieved.
7. Depressurize the hydraulic system.
8. Replace flushing elements with suitable filter elements in accordance with
the instructions of the manufacturer and the operator of the machine.
9. Remove the flushing plate or switching valve.
10. Mount the servovalve.
Ö Chapter "7.3 Mounting the valves", page 38
WARNING If a switching valve is fitted to flush the hydraulic system,
this must not cause any potentially dangerous states in
the machine.
Use the flushing plate to flush lines P and T.
The switching valve can also be used to flush the actuator with lines
A and B.
The flushing plates are not included in the valves’ scope of delivery.
They are available as accessories.
Ö Chapter "13.1 Accessories", page 65
V [l] : tank capacity
Q [l/min] : pump delivery
t 5
V
Q
--------
h
[ ] ⋅
=