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3 Installation
Compare model number and type with that specified on hy-
draulic schematic. The valve can be mounted in any position,
fixed or movable.
Mounting
surface:
(< 0.01 mm (0.00004 in) over 100 mm (3.94 in)) and finish
(R
< 0.8 µm). Care must be taken to ensure that contamina-
a
tion does not enter the hydraulic system, all work areas must
be clean of surface or air-borne contamination.
Mounting: Socket head screws (grade 10.9) according to
EN ISO 4762, torque diagonally alternating.
Pattern to
Series
ISO 4401
-630 (D630)
03-03-0-05
4 Operating Pressure
Maximum operating pressure p
5 Electrical Connection
Electrical safety: The insulation materials employed are de-
signed for use in the safety extra-low voltage range.
To comply with safety regulations requires isolation from the
mains according to EN 61558-1 and EN 61558-2-6 and limiting
all voltages according to EN 60204-1. We recommend using
SELV/PELV power supplies.
Rated signal: See nameplate.
Valve phasing: A positive signal (A–B) and (C–D) causes
valve opening PA.
Connector wiring: See wiring schematic in the catalog or the
installation drawing.
Connection: Signal lines shielded, shielding connected at
both ends and additionally connected to reference potential
(0 V) at the control side (to improve EMC).
Before applying electric signals the valve has to be pressur-
ized.
6 Hydraulic System Start Up
Pay attention to the pressure setting, the venting instructions
and the alarm messages!
7 Null Adjustment
The null adjustment of the valve is achieved by turning the ec-
centric pin at the tank side of the valve body. Loosen the nut
lightly. Turning the pin clockwise will increase valve opening
PA. After adjustment retighten the nut.
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 ori-
fices 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 re-
placed by the customer.
WARNING
Changing the filter
Cleaning serves no purpose.
WARNING
Before beginning work, clean the outside of the
valve around the filter cover!
• Remove hexagon socket screws (6) with a wrench and
remove the filter cover (5). Pull out the plugs (4) using an
M4 screw. Remove the filter disk (2), which is now acces-
sible, with tweezers or a fine screwdriver.
Page 2/2
Check
for
flatness
Socket
Torque
head screw Pcs.
[Nm]
M5 x 50
4
4.5
: See nameplate.
P
1
2
4
3
5
Fig.: 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 plugs (4) with some clean grease and mount.
• Torque screws to:
Type
Series
Servovalve
-630 (D630)
• After start-up, check valve for external leakage.
Replacing O rings: The mounting surface O rings may be re-
placed by the customer. Pay attention to cleanliness of the
valve and of the surroundings.
Transportation: Before transporting a valve the valve ports
have to be sealed with a clean shipping plate or adhesive tape.
Package the valve carefully to prevent damage during trans-
portation.
Repairs: Repairs may only be carried out by us or by our au-
thorized service centers.
9 Disposal
It is essential to comply with the relevant national waste dis-
posal regulations and environmental protection provisions
when disposing of valves, spare parts or accessories, packag-
ing that is no longer needed, hydraulic fluid or auxiliary materi-
als and substances used for cleaning!
Mounting and Installation Notes -630 (D630) (B97072-630-001; Version E, 07/13)
6
Torque
Screw
[Nm] (lbf in)
M4 x 10–8.8
3.40 (30.1)
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