February 2022
Installation, Operation and Maintenance Manual
VCIOM-15345-EN Rev. 1
12
Installation
Section 2: Installation
2.7
Hydraulic Fluid
Biffi Electro-Hydraulic Operated actuators are shipped with the reservoir filled to operation
level. Before commissioning and periodically afterwards, check to see the fluid level is
correct. The oil fill cap is provided with a dipstick marked with a green and a red mark.
When the optional accumulator is drained of fluid and the actuator is at Fail-Safe Position,
the oil should be at the green mark. The reservoir also has a sight gauge for the purpose
of seeing fluid is present. Should fluid need to be added or replaced, use only factory
approved hydraulic fluid.
This specification covers hydraulic fluids which are approved by engineering for use in
Biffi Electro-Hydraulic Operated actuator in a temperature range from -40 °C to 60 °C
(-40 °F to 140 °F).
2.7.1 Approved Fluids
Standard Fluid [use with -29 °C to 60 °C (-20 °F to 140 °F) applications]
—
AGIP ARNICA 22
—
ConocoPhillips Megaflow™ AW HVI Hydraulic Oil
—
22 Shell Tellus S2 V 22
—
Mobil DTE 10 Excel™ 22
Low Temperature Fluid [use with -40 °C to 60 °C (-40 °F to 140 °F) applications]
—
Shell AEROSHELL 41 Fluid
—
Mobil Univis™ HVI 13
Although other brands of fluid matching the same specifications may be used, to maintain
the warranty and ensure trouble-free operation, always check with the factory before
substituting any other fluid.
