BIFFI EFS2000v4 - Maintenance and Trouble-Shooting

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BIFFI FAIL SAFE ELECTRIC ACTUATORS, MODEL EFS2000V4
InstructIon and operatIng Manual
17 MAINTENANCE AND TROUBLE SHOOTING
WARNING!
The EFS2000v4 contains parts with springs,
whichcan be compressed.
Before any disassembling, all precautions
must be taken in order to ensure that the main
power spring is fully released and the spring
accumulator is fully discharged.
WARNING!
The actuator is non-intrusive. The control
compartments are sealed in dry and clean
conditions and contain no site serviceable
components. Do not open it unless absolutely
necessary. Unauthorized access will invalidate
thewarranty.
WARNING!
Since the actuator control compartment contains
a 3.6V lithium battery, only open it in a safe area.
If the actuator is located in a hazardous area, a
‘hot work’ permit must be obtained unless the
actuator can be transported to a non-hazardous
area.
IMPORTANT
To ensure the safety of the maintenance staff,
it is essential to move the actuator to a failsafe
position before carrying out any maintenance
operation and disconnect both the actuator
electrical power, the ESD line and any other
service voltage connected to the terminal board.
17.1 Routine maintenance
It is mandatory to check the actuator, with a
maximum interval of one year, as follows:
• Check that the actuator operates the valve
correctly and within the required operating
times.
• Check the ESD operation.
• Check that the signals to the remote control
desk are correct.
• Check that the external components of the
actuator are in good condition.
• Check the paint-coat of the actuator. If some
areas are damaged, repair the paint-coat
according to the applicable specification.
17.2 Special maintenance
In case of malfunction in the mechanical/
electronic components, in case of oil leaks
through the seals or in case of scheduled
preventive maintenance, the actuator must
be disassembled: all damaged parts can be
ordered from Biffi with reference to attached
exploded view drawing and part list.
When ordering spare parts, please provide the
actuator serial number together with the item
number of the components.
IMPORTANT
After maintenance, the actuator has to be stroked
a couple of times to verify that the operation is
normal, the stroke movements are regular and
that there is no oil leakage through the seals.