BIFFI EFS2000v4 - Lubrication; Operational Tests and Inspections; Disassembling and Demolition

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BIFFI FAIL SAFE ELECTRIC ACTUATORS, MODEL EFS2000V4
InstructIon and operatIng Manual
19 LUBRICATION
For normal duty the EFS2000v4 actuators are
lubricated ‘for life’.
The EFS2000v4 is composed by different
compartments each of them are lubricated or
filled by different products.
In case it is necessary to add lubricant, the
following products (or equivalent) must be
used.
Aeroshell fluid 41 (shell)
Tivela compound A grease (shell)
Accumulator spring (2)
Main spring (1)
Tivela Oil OIL SC30 (shell)
21 DISASSEMBLING AND DEMOLITION
WARNING!
Before any disassembling, all the electrical
supply connected to the EFS2000v4 must be
disconnected.
WARNING!
The EFS2000v4 contains parts with springs,
which may be under compression. Before any
disassembling or for demolition, all precautions
must be taken in order to be sure that the main
spring (1) and the accumulator spring (2) are
fully released. To be sure that all springs are
fully released, put the hydraulic local selector in
MANUAL position (see paragraph 16.2.2), remove
the plug P and open the needle valve 352 (see
paragraph 16.2.3).
WARNING!
Disassembling and demolition of spring pack
MUST be done only by specialized personnel with
suitable tools.
20 OPERATIONAL TESTS AND INSPECTIONS
IMPORTANT
To ensure the guaranteed SIL Level, according
to IEC61508, the functionality of actuator must
be checked with regular intervals of time, as
described following.
For safety related applications, the following
test operation has to be performed:
1. Full stroke of actuator once a year.
2. Partial stroking test at least every six
months (if applicable, please refer to
operating diagram and operate accordingly).
3. Visual inspection-checks, according to par
17.1 with a frequency of once a year.
For standard applications please refer to
paragraph 17.1.
Biffi reserves the the right to change product designs and specifications without notice.
Biffi Italia S.r.L.
Località Caselle San Pietro, 420, 29017 Fiorenzuola d’Arda (PC) ITALY Ph: +39 (0)523 944 411 E-mail: biffi_italia@biffi.it www.biffi.it