INSTALLATION & MAINTENACE MANUAL
RCOe2100/03.06
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If these viscosity requirements cannot be met due to extreme operating parameters or high environment
temperature, motor case flushing is strictly recommended in order to operate within the viscosity limits.
Should it be absolutely necessary to use a viscosity exceeding the recommended range, pls. first contact
Parker Calzoni s.r.l.
2.3.4 – Types of fluids allowed
HLP oils according to standard DIN 51 524 part 2 (with wear-proof, oxidation-proof and corrosion-proof
additives) and part 3 (with a high viscosity index, suitable for applications subject to broad operating
temperature variations) are recommended.
The use of water-based fluids is allowed only with motors specifically designed; the motor performances get
reduced according to the class the oil belongs to: HFA, HFB or HFC (pls. contact Parker Calzoni s.r.l. about
the usage of motors on water based fluids).
The use of synthetic fluids (type HFD) is allowed with motors supplied with seals in FPM material (pls.
contact Parker Calzoni s.r.l. about the usage of motors on synthetic fluids).
Seals in FPM material are necessary for HFD/U fluids only if expressly indicated by the fluid manufacturer.
The use of synthetic fluids (typo HFD) does not imply any motor performances reduction.
Three families of biodegradable fluids are currently available in the market:
1.
Vegetable-based fluids HETG
2.
Polyglycol-based synthetic fluids HEPG
3.
Ester-based synthetic fluids HEE
At the present time very little practical experience and information has been gathered with regard to the
possible performances and aging characteristics of the various fluids belonging to the HETG class. In case of
working pressure exceeding 200 bar, the generation of sludge is a side effect of the use of a fluid belonging
to this class. As a consequence the fluid has to be frequently monitored and an operating temperature below
45°C is recommended.
HEPG fluids have excellent working characteristics thanks to their usual high viscosity.
For information concerning HEE fluids you can refer to the operating parameters of the HLP oils.
AS FOR MINERAL BASED FLUIDS, BIODEGRADABLE FLUIDS
MUST BE DISPOSED OF IN ACCORDANCE TO CURRENT
REGULATIONS.
