• Compressed air pressure lack. • Blow fuse. • Pilot magnetic valve fail. • Valve doesn’t open totally (or closed). • Inadequate connections (slacks or without protection). • Magnetic valve actuated manually. • Compressed air tube wrong connected.
• Compressed air pressure lack.• Blow fuse.• Pilot magnetic valve fail.• Valve doesn’t open totally (or closed).• Inadequate connections (slacks or without protection).• Magnetic valve actuated manually.• Compressed air tube wrong connected.