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Operation Manual
Pressure Fluids
The following rules applies for the operation with
various pressure fluids:
This information serves for orientation and
does not substitute user tests among the
particular operating conditions. Particularly
no liabiliy for media compatibility may be
derived out of it.
Mineral oil: usable without restriction.
For operation with the following pressure fluids
please consult Parker:
HFA
oil-in-water emulsion
HFB
water-in-oil emulsion
HFC
aqueous solution (glycols)
HFD
unhydrous fluids (Phosphor-Ester)
For detailed information concerning pressure
fluids note VDMA-document 24317 as well as
DIN 51524 & 51502.
Special gaskets may be available depending on
the utilized fluid.
In case of insecurity please consult Parker.
Air Bleeding of Hydraulic System
During initial startup, after an oil change as well as
after the opening of lines or valves the hydraulic
system must be air bleeded.
Example: RE06M*T
RE_-R_V obe_24-45-A-B 5715-651 UK 29.01.19
Proportional Pressure Valves
Series RE*T / R*V
Filter
The function and lifetime of the valve are strongly
affected by the cleanliness of the fluid.
purity level class of 18/16/13 acc. ISO4406 is re-
quired.
Flushing
It is recommended to flush the pipelines by short
circuiting the pressure and return lines. This prevents
the installation dirt from entering the valve.
13
Parker Hannifin Corporation
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