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Translation from German
After a certain period of service, the hydraulic fluid
must be replaced. The frequency of the change
depends on the following circumstances:
•
Type and grade of pressure fluid (ageing)
•
Filtration
•
Operating temperature and ambient conditions
Venting of hydraulic system
The hydraulic system must be vented on initial
commissioning, after an oil change or after lines
or valves are opened.
Flushing
With large central pressurised oil stations
in particular, you are recommended to
flush the long pipes by short circuiting
the pressure and return lines. This pre-
vents the dirt occurring during installa-
tion from being carried to the valve.
Product support
If you require further support about the product,
about order processing or about solutions to prob-
lems, please contact your relevant sales company.
2. General notes on safety
Use of operating instructions
We would again like to remind you that
the commissioning and use of our prod-
uct must be based on these operating
instructions. They must
• be followed in full at all times,
• be kept in close proximity to the in-
stalled product, and be accessible at
all times,
• be passed on to any later owners,
• always be used in the version supplied.
The personnel whose job is to work with
this product must have read the operat-
ing instructions – in particular the sec-
tion entitled "General notes on safety"
– before starting work. This specifically
applies to personnel who will only work
with the product occasionally (e.g. setting
up, maintenance).
R_V-DSDU 5715-661 UK.indd 11.12.19
Pilot Operated Pressure Relief Valves
Series R4V*/R6V*/DSDU*
Compliance with other rules and in-
structions
Carry out transport and installation/repair activities
only in accordance with the valid and applicable
safety and accident prevention regulations issued
by the trade associations.
The valve contains hydraulic oil. The normal lo-
cal environmental protection requirements must
therefore be met when handling the product.
The particular circumstances of each place of in-
stallation mean that instructions must be followed
in order to install and use the product safely.
Any health and safety warnings attached
to the product must be observed and
must be maintained in a legible state.
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 defined 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 specified.
6
Parker Hannifin Corporation
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