Care And Maintenance - Aventics IS12-PD-ISO 5599-1 Instrucciones De Servicio

AVENTICS | IS12-PD-ISO 5599-1 | R422003737–BAL–001–AB | English
10 Operation
Loss of function if the minimum control pressure is not met!
If the control pressure falls below 3 bar, the dual valve can no longer switch reliably.
O
Make sure that the minimum control pressure is always above 3 bar.
O
For valves with internal pilot, ensure the operating pressure with an appropriate pressure
sensor, or the control pressure for valves with external pilot respectively.
Slider position detection malfunction due to magnetic sources!
Slider position detection may malfunction due to magnetic sources. The safety function is
then affected.
O
Make sure that no magnetic sources are located near the dual valve.
O
Select the dual valve switching frequency in such a manner that full exhaust is always
achieved before pressurization takes place again.
O
Make sure that the operating conditions correspond to the technical data stated in chapter
16, particularly with regard to temperature, pressure, voltage supply, and mechanical and
climatic loads.

11 Care and Maintenance

Cleaning
Damage to the product due to the use of aggressive cleaning agents!
The product can be damaged if washed with a cleaning agent. The chemical resistance of the
dual valve material to such products is not ensured.
O
Make sure that no cleaning agents come into contact with the dual 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
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.
Danger of personal injury due to uncontrolled movements!
You can simplify system maintenance by mechanically actuating the manual override (MO).
The MO on the IS12-PD valves is "without detent". This means that the valve switches to home
position when you discontinue actuating the MO.
O
Make sure that no uncontrolled movements occur in the process.
The dual valve is maintenance-free. However, the seals of the valves may age faster under
aggressive ambient conditions. Defective seals will lead to pneumatic leaks and non-compliance
with the IP65 protection class.
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 dual valve as this
is the only way of ensuring a life cycle value for the entire dual valve.
The operator is responsible for determining the maintenance intervals.
WARNING
NOTICE
WARNING
12 Removing the Dual Valve from the System
Danger of injury if dual valve 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 disassemble the
valve, coil, electrical connector, or the M8x1 socket.
Contamination during disassembly!
During disassembly, greases or lubricant may escape from the valve.
O
Make sure that the environment is not contaminated with greases or lubricant during
disassembly.
1. Stop system operation and protect it against being switched on.
2. Ensure that the useful load has reached a stable position.
3. Make sure that the relevant section of the system is not under pressure and protect it against
being switched on.
4. Remove the electrical connector from the coil.
5. Remove the sensor plug from the controller.
6. Release the four fixing screws on the dual valve.
This concludes the disassembly.
13 Disposal
O
Dispose of the dual valve and any escaping greases and lubricant in accordance with the
national regulations in your country.
14 Troubleshooting
Danger of injury by dismantling the dual valve!
Pre-tensioned springs may suddenly be released when dismantling the valve.
O
Never disassemble the dual valve or valves.
O
Do not attempt to perform any unauthorized repairs.
O
Check the connections, operating voltage, and working pressure of the relevant system part
if malfunctions occur.
Additional help for malfunctions can be found in the following table:
Malfunction Possible cause
Dual valve does not Insufficient control pressure.
switch
Dual valve is very leaky.
Incorrect pin assignment of
the electrical connector
Insufficient voltage
Sensor LED not Incorrect M8x1 socket
illuminated pin assignment
Insufficient voltage
Excessive voltage
If you are unable to troubleshoot the dual valve malfunction yourself:
O
Disassemble the dual valve as described in chapter "12 Removing the Dual Valve from the
System" and send the valve to AVENTICS GmbH. You can find the address on the back of the
operating instructions.
WARNING
NOTICE
WARNING
Remedy
Increase the control pressure.
Disassemble it and send it, together
with a description
of the error, to AVENTICS GmbH.
Check and correct the pin assignment
of the electrical connector.
Use pre-assembled connecting
cables with electrical connectors.
Increase voltage to the minimum
voltage value.
Check and correct the pin assignment
Use pre-assembled connecting
cables.
Increase voltage to the minimum
voltage value.
Exchange valve
17