A0432
Fig. 7: Water fitting with wetting cone
1. Shut-off valve
2. Pressure reducer
3. Solenoid valve
4. Flow meter
5. Regulating valves
6. Wetting cone
7. Overflow sensor
8. Overflow
5.2.4 Powder feeder
Please refer to the separate operating instructions entitled "Dry Feeder" for
detailed information about the design and function of this device.
The heater of the feeder screw pipe and the minimum fill level sensor for
the dry material hopper are fitted as standard to the Ultromat
®
treatment
systems. The dry feeder is activated by a frequency converter to ensure
quantity-proportional dosing of the powdered polymer into the preparation
water. A loosening wheel is fitted directly above the feeder screw for the
continuous discharge of the powdered polymer. A metering pipe heating
system also removes any moisture that has penetrated the unit and thus
prevents any caking of the powdered polymer.
5.2.5 Vibrator
The vibrator helps to prevent bridging in the dry material feeder so that the
powdered polymer matures better.
5.2.6 Stirrers
CAUTION!
The stirrers can start up suddenly as soon as they are con‐
nected to mains power.
Design and function
22
