Moog D670 Serie Manual Del Usuario página 4

7 Null Adjustment
WARNING
Unsafe state of the machine due to wrong
position of the valve's spool.
A wrong position of the valve's spool may result in
undefined sequences of motion.
 With valves with fail-safe function, the null position
must not be altered.
The null adjustment of the valve and further parameterizations
can be done via the field bus.
8 Maintenance
Except for a regular visual inspection for exterior leakage and
filter change, no maintenance work on the valves is required.
Changing the filter: The installed filter protects internal
orifices and nozzles against coarse particle contamination.
The valve response time will increase as contamination
increases.
The filters located below the filter cover at the side may be
replaced by the customer.
NOTICE
Changing the filter
Cleaning serves no purpose.
NOTICE
(Only for D671/5)
Fluid flow through the filter disk (2) is from inside to outside
leaving particles behind the filter disk (2) and cannot be seen
from the outside after removing the filter cover (4).
NOTICE
 Before beginning work, clean the outside of the valve
around the filter cover!
• Remove hexagon socket screws (5) with a wrench and
remove the filter cover (4). Remove the filter disk (2),
which is now accessible, with tweezers or a fine
screwdriver.
1
2
3
4
Fig.: Principles of construction
• Check O-rings (1) and (3) and replace if necessary.
• Install new filter disk. To do this, first insert the O-Ring
(1), then the filter disk (2) so that the side of the filter disk
with the indentation faces the outside. Insert O-ring (3) in
the filter cover (4) with some clean grease and mount.
• Cross-torque screws to:
Type Series
Pilot valve/ D671
Proportional valve
• After start-up, check valve for external leakage.
Mounting and Installation Notes D670/1/2/3/4/5 (B97072-67x-001; Version H, 10/15)
5
Torque
Screw [Nm] (lbf in)
M5 x 8–10.9 8.34 (73.8)
Applies only with D061 pilot valve
• Loosen pilot valve (2) from the main stage (1). Remove
the filter disk (4), which is now accessible, with tweezers
or a fine screwdriver.
2
1
Fig.: Construction
• Check O-rings (3) and (5) and replace if necessary.
• Install new filter disk. To do, first insert the O-Ring (5),
then the filter disk (4) and O-ring (3) so that the side of
the filter disk with the indentation faces the outside.
• Cross-torque screws to:
Type Series
Pilot valve D061
• After start-up, check valve for external leakage.
Replacing O rings: The mounting surface O rings may be
replaced by the customer (on the pilot valves and the way
valves as well). The O rings of the pilot valve and the way
valve of the D670 and D671 with ServoJet® pilot valve must
not be replaced by the customer. Pay attention to cleanliness
of the valve and of the surroundings.
Transportation/storage: Before transportation, seal the base
of the valve using a clean shipping plate or adhesive tape.
Seal the connector using a dust protection cap. Pack the valve
carefully so that it is not damaged during transportation or
storage.
Inspection: Following a period of storage or no operation for
more than 5 years, we recommend that the valve is inspected
by an authorized service center, in order to prevent possible
damage.
Repairs: Repairs may only be carried out by us or by our
authorized service centers.
Repaired valves or replacement valves are delivered like
new valves with factory settings. Therefore, the valves have
to be checked for correct configuration and changed
parameterization before re-initiation. If necessary, the user has
to restore the machine manufacturer's original configuration
and parameterization.
9 Disposal
It is essential to comply with the relevant national waste
disposal regulations and environmental protection provisions
when disposing of valves, spare parts or accessories,
packaging that is no longer needed, hydraulic fluid or auxiliary
materials and substances used for cleaning!
5
4
3
Torque
Screw [Nm] (lbf in)
M5 x 30–10.9 8.34 (73.8)
Page 3/3