UNI Geräte 10-EVSA, Operating And Maintenance Instructions Manual

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Technical description
03/2021 221.100.002-00 9
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7 Technical description
The EVSA solenoid valve is a direct-operated, normally closed (NC), quick-closing automatic shut-off valve
with solenoid drive.
The valve has a service life of 20 years.
7.1 Function
The following item numbers refer to the respective valve in Fig. 1 – Fig. 7.
When the solenoid drive (800) is switched on, the solenoid core (207) is pulled against the Upper part of
housing (106). The pressure spring (503) is further preloaded and the actuator releases the valve cross-sec-
tion. The valve is open.
The valve closes by interrupting the energy supply to the solenoid drive. The pressure spring (503) is
preloaded and the actuator closes. The valve is closed at 15% of the nominal voltage.
7.2 Identification
The nameplate on the valve contains the following information:
•
Manufacturer
• Valve type, nominal size, pressure and temperature specifications, installation position
• Year of manufacture / serial no.
• Valve class and group
• CE mark and number of the notified body
• Fluid group and PT test pressure
• Solenoid drive type
• Electrical power
• Voltage
• Frequency
• Degree of protection
• For solenoid drives for Ex-protection zone 1 additionally:
•
Ignition protection type
• Certificates
8 Transport
Warning
Risk of crushing and impact during lifting and transport!
Due to the weight of the valve there is an increased risk of injury during transport.
•
Have valve transported by trained personnel only.
• Wear sturdy boots and safety gloves during transport.
• Only use approved lifting tackle.
• Only use lifting equipment with a minimum load capacity greater than the weight of the component to be
lifted.
• Only lift the valve from the housing or the intended transport lugs, ring nuts or below the solenoid drive.
Never lift the valve by the cable connections, attachments or the device plug.
• Always keep a safe distance away from raised components.
• Never step under suspended loads.
• Never place the valve on attachments.
Attention
Material damage due to improper transport.
The valve may be damaged by mechanical influences during transport.
•
Protect the valve against shock, impact or vibration during transport.
Material damage due to incorrect ambient temperature.
If the ambient temperature is too high or too low, the valve may warp or the paint may be damaged.
•
Only transport the valve at ambient temperatures between -20 and +60 °C.