Moog D926/7 Serie Manual Del Usuario página 3

Class of cleanliness:
Class of cleanliness
according to ISO 4406
Series :1999
D926 20/18/15
D927 20/18/15
D936 19/16/13
D937 19/16/13
The cleanliness of the hydraulic fluid greatly influences the
functional safety and the wear and tear. In order to avoid mal-
functions and increased wear and tear, we recommend filtrat-
ing the hydraulic fluid accordingly.
Flushing instruction: Use of flushing plates or flushing valves
according to the machine manufacturer's instructions.
3 Installation
NOTICE
Damage due to dirt, moisture and ozone/UV effects
• Storage outside or under the wrong climatic conditions can
cause corrosion and other damage to the valve. Conden-
sation due to temperature fluctuations can result in elec-
tronic malfunctions.
 In the case of intermediate storage, observe the follow-
ing storage conditions:
• Recommended ambient temperature: +15 to +25 °C
(+60 to +78 °F), permissible temperature: –40 to
+80 °C (–40 to +176 °F), temperature fluctuation:
< 10 °C (18 °F)
• Relative humidity: < 65 % not condensing
• Ensure there are minimal vibration and shock where
valves are stored
 Following transport or storage, wait until the valves have
reached ambient temperature before starting up.
• Dirt and moisture can enter the valve through openings
and cause damage. Seals can be damaged due to the
effects of ozone and UV.
 During storage and transport, seal connectors with dust
protection caps and install the shipping plate on the
mounting surface.
 Remove dust protection caps and shipping plate only
shortly before mounting the valves and keep packaging
materials for future storage and transport.
 Seal with protection caps any valve connectors that are
not used in operation (without mating connector).
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
D926 03-03-0-05
D927 05-05-0-05
D936 03-03-0-05
D937 05-05-0-05
Page 2/2
Class of cleanliness
according to ISO 4406
:1999 for longer life
17/14/11
17/14/11
17/14/11
17/14/11
Check for flatness
Torque
Socket [Nm]
head screw Pcs. (lbf in)
M5 x 30 4
(60)
M6 x 60 4
(97)
M5 x 55 4
(60)
M6 x 60 4
(97)
4 Operating Pressure
Maximum operating pressure p
5 Electrical Connection
Electrical safety: The protective conductor connection is con-
nected to the electronics housing or valve body. The insulation
materials employed are designed 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.
External fuse per valve:
Series
D926
D927
D936
D937
Valve phasing: A positive signal (D–E) for 6+PE connector
causes valve opening PA.
Connector wiring: See wiring schematic tag attached to elec-
tronics housing or refer to the catalog.
Connection: Signal lines shielded, shielding connected at
both ends and additionally connected to reference potential
(0 V) at the control side (to improve EMC). Connect the protec-
tive conductor.
Observe technical notes TN 353 Protective Grounding and
Electric Shielding, TN426 Wiring Instructions and TN494 Maxi-
mum Permissible length of Cables.
6 Hydraulic System Start Up
Pay attention to the pressure setting, the venting instructions
and the alarm messages!
7 Service
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/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 stor-
age.
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 Moog or by our
authorized service centers.
8 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!
6.8
11
6.8
11
Mounting and Installation Notes D926/7, D936/7 (B97072-D936-001; Rev. D, 05/23)
: See nameplate.
P
External fuse per valve
2.0 A time lag
3.15 A time lag
2.0 A time lag
3.15 A time lag