12
PLEASE NOTE
Proper Handling of the Nozzle:
The ZVF 50 is equipped with various external soft plastic parts. These are intended to protect the
aircraft.
To prevent damage and contamination of the spout to the nozzle, it shall not be
pulled along the ground or dropped to the ground
. When not in use, the nozzle should be
stoved away in a suitable device /
nozzle holder, such as the Elaflex N B-ZVF
. F or t he c on-
struction of a device, see ZVF 50 dimensions on page 7 and Elaflex Information 10.15.
Avoid Misfuelling:
Refuelling aircraft with the wrong type of fuel can lead to serious consequences. To clearly
allocate the nozzle to the used fuel type, ZVF 50 are available either as
black
marked 'JET' or
red
marked 'AVGAS' type. We strongly advise to use aviation nozzles only for the designated fuel
type. If local regulations permit, the spout type can be temporarily changed to adopt to special
filler openings. It is the responsibility of the operator to safeguard that these actions may never
lead to any confusion or to misfuelling with the wrong fuel type.
Problematic Filler Openings - Clean and Well Regulated Refuelling:
The ZVF 50 is a high flow nozzle. The flow rate (max. 400 l / min) should be adapted to the form
and capacity of the fuel tank as well as the size of the spout. Flow rates which are too high may
generate a splashback out of the filler neck. Depending on the type of aircraft, the fuelling shall
always be done with a suitable flow rate. At the end of the refuelling operation
,
we recommend to
reduce the pump performance and flow rate.
MAINTENANCE
ZVF 50 nozzles do not require regular maintenance. Elaflex suggests recurring visual inspections
to check the external and functional condition of the nozzle. When connecting threaded parts
( substitution of spout or swivel ) we suggest to slightly lubricate the thread surface.
If the nozzle is equipped with a sight glass, it must always appear clearly transparent and not show
any sign of damage. If in doubt, the nozzle shall be put out of service for an inspection by com-
petent personnel.
MALFUNCTION
If malfunctions such as leakage, sluggishness of mechanical parts or too flow rates occur, fuelling
should be immediately stopped, and the nozzle should be inspected by competent personnel.
Cause for a low flow r
ate o
ften a
re c
logged s
trainers o
r fi
lters. Th
ese sh
ould be ch
ecked
respectively cleaned first. Damaged external protec
t
ion parts of the ZVF 50 should be replaced.
Always follow your company
'
s laid down requirements and procedures.
