Function And Application; Installation And Adjustment; Cleaning And Maintenance; Technical Specifications - Fantini Cosmi ZDEVRMNA Serie Manual De Instrucciones

FUNCTION AND APPLICATION

Manual reset gas safety valve that is normally open. A manual operation is necessary to open
the valve and set the mechanism consenting to maintain this state. The powering by means of
line current and/or condenser discharge, induced by the leakage detector, causes tripping of the
mechanism and consequent closing of the gas passage. If energizing of the sensor persists due
to the presence of gas, the valve remains under power and does not allow reset. When the
causes for locking have been eliminated, the valve may be reopened by working it manually.
This type of device, connected with one or more leakage detectors or alarm signals for the
presence of carbon monoxide, is suitable for performing locking operations on the gas line.

INSTALLATION AND ADJUSTMENT

Check correspondence of flow direction with arrow printed on valve body, check correct
alignment of connecting pipes. Valve may be mounted with coil in horizontal or vertical position.
Coil may be oriented 360 degrees in any direction. Install in an area that is protected from rain
and water splashes or drops.
For electrical connection remove cap on the DIN plug and connect power cables to the clamps.
CAUTION: Turn off all power before servicing any part of the system.

CLEANING AND MAINTENANCE

Dust and any foreign bodies may be easily removed from the filter or the gas passage zone.
After shutting off upstream gas and electric current, the coil is removed by unscrewing the reset
knob and the knurled fastening cap. Unscrew the screws fixing the counter flange to valve body.
During this operation care should be taken not to cause damage to the seat.
CAUTION: Do not dismount or tamper with the resetting mechanism.

TECHNICAL SPECIFICATIONS

Connections
Voltage rating
Voltage tolerance
Ambient temperature
Working pressure
Closing time
Protection class
Cable gland
Pressure inlets
Limit switch
Gas type
Filter
Comply with the essential requirements of the following Directives:
73/23/EEC; 89/336/EEC.
This control must be installed in compliance with the laws in force.
Fantini-Cosmi reserves the right to update or make technical changes without prior notice.
: gas threaded ISO 7/1 from Rp 1/2 to Rp 2
: flanged PN16 – ISO 7005 from DN65 to DN100
: 230V 50/60Hz
: -15% / +10%
: -15°C / +60°C
: 500 mbar Max.
: < 1 second
: IP 54
: PG 9
: G1/4" on two sides (except brass models)
: by request from 3/4" to 4"
: Air and non-aggressive gases (EN 437)
: 600 µm (except brass models)
GB