Directly operated and pilot operated directional control valves
Series D1VW / D1DW / D3W / D3DW / D31DW / D41VW / D81VW / D91VW
7
Translation from German
Parker Hannin Corporation
MSG11-5715-662 DCV UK.indd 21.07.22
Personnel requirements
The product may only be used, installed, removed,
operated and maintained by specialist personnel.
For the purposes of these instructions, a specialist
is dened as someone who, on the basis of their
education, expertise and professional experience,
is able to correctly evaluate and carry out the tasks
and duties assigned to him/her, and identify and
correct potential hazards.
Skilled, semi-skilled or trained personnel may not
use this product under their own responsibility un-
less they have the required specialist knowledge.
Otherwise, they may only use the product under
the constant supervision of a specialist person.
Use of the product
The product must only be used if it is perfect work-
ing order. Problems that may impair safety must
be corrected.
This product is a safety component that
may only be repaired by the manufacturer
if it malfunctions.
If the safety components are repaired by
the user, the manufacturer's warranty is
invalidated because the manufacturer is
demonstrably unable to ensure that the
product is used as specied.
Limits of use
The product may only be operated within the speci-
ed limits of use. The relevant details can be found
in "Technical data" (section 16).
The ambient conditions must be ob-
served. Unauthorised temperatures,
shocks, the effects of aggressive
chemicals, radiation, unauthorised
electromagnetic emissions may result
in disruptions and failures.Observe the
limits of operation set out in "Technical
data" (section 16).
DCV valves with position control are not
suitable for use in Ex areas (gas/dust).
Contaminations
The function and service life of the valve are heavily
dependent on the purity and quality of the pressure
uid and depend upon the operating conditions of
the hydraulic components.
Appropriate lters must be used and regular in-
spections of the medium must be carried out to
prevent contamination of the pressure uid. The
permitted level of contamination is set out in the
"Technical data".
Be aware of three important sources of
contamination:
• Contaminations entering during instal-
lation
• Contaminations occurring during operation
• Dirt entering from the surroundings
3. Remaining risk
Allergic reactions
Hydraulic oil can cause allergic reactions on sus-
ceptible skin. This can be prevented by taking the
precautions that are usual when handling min-
eral oil products and by using personal protective
equipment.
Leaking plugs
Leaking plugs can cause a malfunction.
That is why the plugs must be checked
for leaks at the regular maintenance
interval. Leaking plugs may constitute
a safety hazard, so the valve must be
returned to the manufacturer for repair.
Lightning
If electronic components are exposed
to electromagnetic elds as a result of
lightning, they must be checked to ensure
they are still working perfectly. If there
is a malfunction, the product must be
returned to the manufacturer.
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