Test Procedure
3/2 Valves
5/2 Valves
Results from the test procedure other than those listed above indicate a valve malfunction. See
“8 Care and Maintenance”.
Failure of the valve to shift synchronously can be monitored with the help of the sensors. This
malfunction could happen for a variety of reasons, such as:
W
Defective piston seals,
W
Main valve elements experiencing a switching delay due to dirt or resinous oil,
W
Insufficient electrical signals to valve solenoids; suitable voltage not available,
W
Receipt of signals at solenoids not synchronous,
W
Pilot valves experiencing a switching delay due to damaged components, dirt, or resinous oil,
W
Excessive water build-up in the valve.
8
Care and Maintenance
Care
No special care is required for the safety valve. Note the following if you would like to clean the
valve:
O
Check that all seals and plugs for the plug connections are firmly seated so that no humidity
can penetrate the safety valve during cleaning.
O
Only clean the safety valve using a slightly damp cloth. Only use water to do this and, if
necessary, a mild detergent.
Test
Result
7. Solenoid A energized
Valve is faulted, supply is shut off, downstream air
exhausts through port 3. Sensor A voltage is off, sensor B
is on.
8. Reset valve by de-energizing
both solenoids
Valve is off, supply is shut off, and downstream air is
exhausted through port 3. Sensors A & B are high.
9. Solenoid B energized
Valve is faulted, supply is shut off, downstream air
exhausts through port 3. Sensor A is on, sensor B is off.
10. Reset valve by de-energizing
both solenoids
Valve is off, supply is shut off, and downstream air is
exhausted through port 3. Sensors A & B are on.
11. Solenoids A & B energized
Valve is on, air pressure is supplied downstream through
port 2, port 3 is shut off. Sensors A & B are off
12. Solenoids A & B
de-energized
Valve is off, supply is shut off, and downstream air is
exhausted through port 3. Sensors A & B are on
Test
Result
1. Solenoid A energized
Valve is faulted, port 2 is pressurized, port 4 is exhausted
through port 5. Sensor A is off, sensor B is on
2. Reset valve by de-energizing
both solenoids
Valve is off, port 2 is pressurized, port 4 is exhausted
through port 5. Sensors A & B are on.
3. Solenoid B energized
Valve is faulted, port 2 is pressurized, port 4 is exhausted
through port 5. Sensor A is on, sensor B is off
4. Reset valve by de-energizing
both solenoids
Valve is off, port 2 is pressurized,
port 4 is exhausted through port 5. Sensors A & B are on
5. Solenoids A & B energized
Valve is on, port 4 is pressurized, port 2 is exhausted
through port 3. Sensors A & B are off
6. Solenoids A & B
de-energized
Valve is off, port 2 is pressurized, port 4 is
exhausted through port 5. Sensors A & B are on
NOTICE
Damage to the product due to the use of solvents and aggressive cleaning agents!
The product can be damaged if washed with a solvent or aggressive cleaning agent. The
chemical resistance of the valve material to such products is not guaranteed. Solvents and
aggressive detergents will destroy the surface, labeling and seals of the product.
O
Make sure that no solvents and aggressive cleaning agents come into contact with the
valve.
Damage to the product due to washing at high pressures and temperatures!
The product will be damaged if you clean it with high pressure and/or at a high temperature.
O
Make sure that the product is not cleaned with high pressure and/or at a high
temperature.
Maintenance
In normal operation, the safety valve is maintenance-free. However to ensure the correct
function, the safety valve must be actuated at least once per month.
O
Activate the safety valve at least once per month.
O
Perform a functional test at least annually (see “Test Procedure”)
The safety valve seals may age faster in aggressive ambient conditions. A damaged seal can be
recognized by parts of the seal visibly protruding from the housing gaps. Defective seals will lead
to pneumatic leaks. Please return to factory in case of faulty product.
O
Regularly check that the seals are in perfect order.
O
Immediately exchange the safety valve if the seals are defective.
O
Check regularly whether all plug connectors are firmly fitted.
O
Establish the maintenance intervals according to your ambient conditions and enter them in
the system-dependent maintenance plan.
O
Observe the system-specific maintenance intervals.
In case of any maintenance requirements, it is advisable to replace the entire safety valve as this
is the only way of ensuring a life cycle value for the entire valve.
9
Disassembly and Exchange
Disassembly
1.
Switch off the 24 V DC supply.
2.
Remove the connected plugs.
3.
Switch-off the supply pressure and exhaust the supply line.
4.
Remove the pneumatic lines.
5.
Remove the valve fastening screws depending on the mounting type.
6.
Remove the valve from the system.
Exchange
1.
Disassemble the safety valve as described above.
2.
Assemble a new safety valve as described in chapter “Assembly and Installation“.
10 Disposal
O
Dispose of the safety valve in accordance with the currently applicable regulations in your
country.
11 Spare Parts
WARNING
Risk of injury while working on a running system!
Working while the system is running can cause major injuries from moving machinery.
O
Bring the system mode into a state in which working movements are no longer possible.
Wait until all moving machine parts come to a standstill, and protect the system against
being switched on.
The operator is responsible for determining the maintenance intervals.
WARNING
Danger of injury if disassembled under pressure or voltage!
Uncontrolled movement of the system components!
O
Make sure that the system is not under pressure or voltage when you remove the safety
valve from the system.
NOTICE
Contamination during disassembly!
During disassembly, greases or lubricant may escape from the safety valve.
O
Make sure that the environment is not contaminated with greases or lubricant during
disassembly.
Silencers can be replaced as spare parts by the user when applicable (For example in
case of dirt, excess oil, air pollution or mechanical damage)
Designation
Mat. no.
Silencer, G1/8, 94 dB, Qn = 1664 l/min
R412010283
Silencer, G1/4, 96 dB, Qn = 2687 l/min
R412010245
Silencer, G1/2, 100 dB, Qn = 6285 l/min
R412010247
AVENTICS
| SV01/SV03/SV05 | R412027221-BAL-001-AA | English
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