E2
Line pressure relief
This operation is to be carried out to
replace the pre-existing nozzle with the
METER nozzle or to dismount the
METER for maintenance purposes.
Warning
Failure to carry out this line pressure
relief procedure may cause damage
to persons or things.
• Close the shut-o valve. Otherwise
stop the power supply pump and make
it unserviceable to avoid an accidental
re-start during maintenance operations.
• Operate the valve of the nozzle to be
replaced (or of the METER to be
disassembled for maintenance reasons)
dispensing into a suitable container in
order to release the line pressure.
Warning
If a dripless valve is installed at the
end of the nozzle, the pressure inside
the line will not decrease to zero, but
it may stay at a value of 0.2 - 0.5 bar
according to the type of dripless
valve used.
• (For the dismounting of the METER
only) Remove the rubber cover from its
coupling on the swivel and move it
along the exible hose in order to have
easy access to the swivel.
• By means of two wrenches, unscrew
the threaded end of the exible hose
from the swivel.
Warning
Be careful to collect any oil leakage
into a suitable container.
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