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BIFFI FAIL SAFE ELECTRIC ACTUATORS, MODEL EFS2000V4
InstructIon and operatIng Manual
17.3 Repairs
When needed, repair must only be carried out
with Manufacturer’s original spare parts.
WARNING!
The values of gaps of explosion-proof joints are
lower than the maximum specified on Tables 1
and 2 of IEC/EN 60079-1 Standard. In case the
maintenance should require the replacement
of any component which forms part of an
explosion-proof joint, only an original spare
provided by BIFFI MUST be used. Direct repair
or reconstruction of the above components are
not permitted without the BIFFI permission. Not
performing this procedure will invalidate the
product safety and contractual guarantee.
• Open the terminal board cover
• Remove the label
• Remove the battery cover
• Replace the battery
• Disconnect two wires (+) (-) from the main board
• Bring the cover to a safe area. When in a safe area:
IMPORTANT
The new battery must be the same as the one provided:
• Lithium - SAFT LS 9V
17.4 Lithium battery change
Isolate the main supply to the actuator and
all other control voltages.
WARNING!
If the actuator is located in a hazardous area a
“hot work” permit must be obtained unless the
actuator can be moved to a non-hazardous area.
Original spare parts must be required to the
Manufacturer: to ensure that right spare is
provided, serial number printed on the EFS
2000v4 unit enclosure label must be specified
when spares are ordered.
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