coval GVMAX HD Serie Manual De Instrucciones Simplificado página 8

GVMAX HD
Heavy Duty Communicating Vacuum Pumps
Model GVMAXHD__V: vacuum pump with NO vacuum control and NC blow-off
In the event of power failure, vacuum is still generated: object is held in
place  fail-safe.
In the event of compressed air failure, the vacuum is no longer
maintained.
ƒ NO vacuum solenoid valve
ƒ NC blow-off control solenoid valve
ƒ Blow-off controlled by external signal
Model GVMAXHD__L: vacuum pump with pulse-triggered bistable
vacuum control and NC blow-off (patented system)
In the event of power failure, the vacuum pump maintains its
previous state.
More specifically, one of the following two scenarios will take place
should this occur:
- During vacuum generation, the vacuum is maintained
 fail-safe
- During blow-off or when the pump is off, the pump remains "Off"
Vacuum control is automatically stopped when the blow-off command is activated.
The vacuum can only be stopped with the blow-off command.
In the event of compressed air failure, the vacuum is no longer maintained.
ƒ Pulse-triggered bistable vacuum control solenoid valve (50 ms min.)
ƒ NC blow-off control solenoid valve
ƒ Blow-off controlled by external signal
5. CONNECTIONS
5.1 Pressure supply connection
COMPRESSED AIR OR VACUUM NETWORKS:
ƒ Wear safety goggles
ƒ Make sure all fittings and tubes are tightened securely
ƒ Tube ends must be fastened to avoid any risk of being pulled off in the event of accidental
breakage
- Non-lubricated air, filtered to 5 microns, according to
standard ISO 8573-1:2010 [3:4:4]
- Optimal dynamic pressure:
• 5 bar for dia. 2.5 mm nozzle
• 5.5 bar for dia. 3.0 mm nozzle
5.1.1 Standalone modules
- Compressed air connection through a G3/8"-F port
(mark on pneumatic socket).
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SIMPLIFIED OPERATING INSTRUCTIONS
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