Operation
3.7 exdirt / extwin
Properly install the draw-off tap at the devices.
3.8 exvoid / extwin
Comply with the following instructions:
• For a hydraulic pressure test at the equipment, install a blind cover (to be supplied by the user) at the blow-off opening of the venting
mechanism.
• To drain the released air or gases (odour), you may connect an additional hose or pipe at the У2" thread of the blow-off opening.
4 Operation
Note the following for operation:
• The glycol portion of the water must be maximal 50 percent.
• When dosing additives, comply with the manufacturer specification regarding the permissible dosing quantities. This is important in
particular to prevent corrosion.
• Chemical additives such as inhibitors must be used only after an impact assessment in respect to all the materials used in the system.
- This impact assessment is the responsibility of the user.
• Keep the system free from foaming substances. Foam or dirt beyond a specific portion can cause a temporary leaking at the venting valve.
5 Maintenance
Caution - risk of burning!
• Excessive surface temperatures in heating systems can cause skin to burn.
- Wait until surfaces have cooled down or wear protective gloves.
- The operator is required to attach corresponding warning notes in the device vicinity.
The time intervals for maintenance work depend on the specific operating conditions.
5.1 Pressure test
During a hydraulic pressure test, the pressure must not exceed 1.5 times the maximum working pressure.
5.2 Cleaning
5.2.1 Sludge separator
• The cleaning interval depends on the accumulated dirt within the system.
• Provide a catching container and a pressure and temperature-resistant drain hose, if required.
For cleaning, proceed as follows:
1. Gradually open the desludging valve for a short time until sludge no longer drains off.
- Make sure that not much water escapes.
2. Subsequently, check the system pressure and add water as required.
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