Unlocking The Valve; Sov 3/2-Directional Valve, Pneumatically Operated; Sov 3/2-Directional Valve - Electrically Operated; Series Nl1, Sov 3/2-Directional Valve - Electrically Operated With Continuous Pressure Supply - Emerson AVENTICS NL1 Operating Instructions Manual

5.3.5 Unlocking the valve

Unlock the padlock and remove it.
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5.4 SOV 3/2-directional valve, pneumatically operated

g Fig. 2
Connecting
1. Insert the seal (b) in the connection (a) and mount the push-in fitting (c) with
G 1/8 thread on the connection (a).
2. Connect the pressure supply (d) for the control pressure.
Function:
• On applying control pressure > 2.5 bar the valve switches to
opening 1 → 2.
• P1 is shut off and pressure P2 exhausted for compressed air pressure relief.
The control pressure depends on the operating pressure P1.
5.5 SOV 3/2-directional valve – electrically operated*
5.5.1 Series NL1, SOV 3/2-directional valve – electrically operated
with continuous pressure supply*
g Fig. 3
Function:
• On supplying voltage to the coil and pressure to P1 (electrical:
2.5 bar < P1 < 10 bar, pneumatic: 2.5 bar < P1 < 16 bar) the valve switches to
opening 1 → 2.
• P1 is shut off and P2 exhausted for compressed air pressure relief.
• If pressure is supplied to P1, the valve can be manually switched via the man-
ual override (d)
(with detent).
• Both the secondary pressure P2 and connection 3 (exhaust) are located at the
back side of the device.
5.5.2 Mounting the pilot valve, coil, electrical connector, and con-
necting cable
g Fig. 4
Assembly instructions also apply to ATEX-compliant coils.
Coil, electrical connector, and cable or just the electrical connector
and cable may already be pre-mounted into assemblies. If these as-
semblies are pre-mounted, you can skip the respective assembly
steps.
1. Mount the DO22 pilot valve (b) on the SOV 3/2 directional valve and fasten it
tight with the supplied screws (d).
2. Push the connection form B coil (e) and washer (f) onto the pilot valve shaft
(b) and secure them with the knurled nut (g).
3. Open the form B electrical connector (i), push the line through (n), (m), (l) and
the opening, and fasten the wires to the clamps.
4. Close the electrical connector.
5. Place the seal (h) on the coil (e).
6. Mount the electrical connector (i) on the contacts of the coil (e), and secure
the electrical connector with the screw (k).
The control pressure depends on the operating pressure P1.
* Exhaust
NL1: Exhaust via back side.
NL2/4/6: Exhaust on bottom.
Sudden pressure increase during commissioning!
The system is exposed to sudden pressure on commissioning if no SSU filling
unit is used! This may result in dangerous erratic cylinder motions.
Please ensure when commissioning a system without a SSU filling unit that
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the cylinders are in their end position or that no danger can emit from
those not in end position.
AVENTICS™ NL1 | NL2 | NL4 | NL6 | R412015554-BAL-001-AE | English
CAUTION
During commissioning
1. Let the product acclimatize for several hours before commissioning, other-
wise, water may condense in the housing.
2. Check that all the electrical and pneumatic connections are allocated or
closed. Only commission fully installed products.

5.6 Filling valve SSV

g Fig. 5
Filling valves or filling units must not be placed upstream of open consumers
(such as nozzles, air barriers, air curtains etc.), since these may prevent compo-
nent switching.

5.6.1 Adjust filling time

The filling valve prevents a sudden build-up of pressure when the system is com-
missioned. The filling time can be changed on the adjustment screw. (The screw
position varies depending on the series.)
1. Remove the adjustment screw lock (a) (if fitted).
2. Turn the adjustment screw (e.g. with a screwdriver) in a clockwise direction to
lengthen the filling time or in an anti-clockwise direction to shorten the filling
time.
3. Press the adjustment screw lock (a) into the adjustment screw (if fitted).
Filling valve with fixed diaphragm
When filling with a fixed diaphragm, the filling valve switches over af-
ter reaching approximately half the output pressure (P2 = 0.5 x P1,
50%) and releases the full flow.

5.6.2 SSU filling unit

The filling unit combines a shut-off and filling valve.

6 Service and repairs

6.1 Cleaning and servicing

• Close all openings with suitable safety devices so that no cleaning agent can
enter into the system.
• Never use solvents or aggressive detergents. Only clean the product using a
slightly damp cloth. Only use water and, if necessary, a mild detergent.
• Do not use high-pressure cleaners for cleaning.
• Do not use compressed air for cleaning (blowing off) the maintenance unit or
equipment.

7 Decommissioning, Disassembly, Replacement

Danger of injury in case of disassembly or replacement under pressure or
voltage!
Disassembling or replacement when under pressure or electrical voltage may
lead to injuries and damage to the product or system components.
1. Make sure that the relevant system part is not under pressure or voltage be-
fore disassembling the product or exchanging parts.
2. Protect the system against being restarted.
Danger of burns!
The surfaces of adjacent system components can become hot during opera-
tion.
Let the system component cool off before disassembling it.
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8 Disposal

Dispose of the product and condensate in accordance with the national regula-
tions in your country.
CAUTION
CAUTION
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