CATEGORY:
COMPONENTS
MODEL:
Deadman timer system
APPLICATIONS:
CODE 0785PFA813350
The Nuova Ma.Na.Ro. Deadman Timer System is a unique system designed to
prevent any possible operator negligence, since a timed deactivation
with outlet predisposition for visual or sound alarm device connection
is provided.
CHARACTERISTICS:
The Deadman TIMER is operated by a
intrinsicaly safety NAMUR sensor (EEX-ia) incorporated in the handle.
The Nuova Ma.Na.Ro Deadman Timer System controls the pneumatic selenoid
valve which in turn controls the deadman valve.
An intrinsic safety-barrier incorporated in TIMER Unit feeds the sensor
which controls the timer circuit designed to deactivate approximately
every 3 minutes.
Flow would then stop after this period unless the operator generates a
reset signal.
To reset the TIMER it is sufficient to release and press again the
handle.
In order to avoid automatic flow shut-down in normal operation, a prompt
sound is generated
from the TIMER unit 30 seconds before the interruption. This signal is
used to generate either an audible or visual prompt , or both, so that
the operator is reminded to reset.
The timer unit is fitted with three control leds to check the right
functioning.When the deadman is activated the visual signal is triggered
in a fixed way for 120 seconds, then it flashes for further 60 seconds
all this works for a max time of 180 seconds.
The sound warning device is designed to give a discontinuous signal that
is activated from the 120th second.
To reset the TIMER it is sufficient to release and to press again the
handle within ½ second. Releasing the handle for more than ½ second
the TIMER stops the delivery.
A reset signal can be generated at any time during the TIMER cycle
whether prompted or not.
The Nuova Ma.Na.Ro electric Timer Deadman is very easily and quickly
installed.
All the connections are routed to and from the Timer unit and the
deadman installation can be made either inside the vehicle cab or in an
external electrically safe area.
The Timer unit dimensions are very restrained:
- Height: 60 mm
- Width: 15 mm
- Length: 140 mm
- Ensure constant control of fuelling operation;
- Provides audible safety assurances;
- Easy to install;
- 24V dc application;
- Short circuit protection;
- EEX-ia II C CESI EX 95.D.0205 Certification; according to the CENELEC
EN 50.020 - EN 50.014 rules
- Working temperature range: -20°C to +70°C;
- Protection degree: IP55.
EQUIPMENT AND OPERATIONS:
At the moment the Nuova Ma.Na.Ro. Deadman
Timer System can be supplied together with the following components:
- one inlet TIMER unit for one control handle;
- two inlet TIMER units for two control handles. This version is used
when the Customer wants to couple the electric deadman system installed
in the refuelling station with additional handle fitted of 1,5 mt spiral
cable to be mounted on the refuelling platform;
- handle with sensor fitted with 15 mt spiral extendible cable;
- waterproof alarm for sound warning, IP66;
- visual warning light explosion proof, green colour;
- visual warning tight inflammable vapour-proof light green colour, to
install in open area, IP66;
- visual warning miniatured light, green colour, to install in the
refuelling platform.
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