Important - Ciber UACF15P1-P2 Manual De Operación

01.05.11
FILTRO DE MANGAS FILTRO DE MANGAS
(EN)
Cares to be taken with the bag filter on the first day of operation
Some special precautions should be taken on the first day of operating the bag filter in order to ensure the filter's smooth
operation and the durability of the bags. This procedure should be carried out in the presence of the technician
responsible for the equipment's technical delivery.
1. First of all, test the operation of the components: exhaust fan, compressor, and screw conveyors.
2. Regulate the pressure of the compressed air line on the pressure regulating valve close to the outlet of air tank at 7
BAR, and on the pressure regulating valve close to the filter's strainer at 6 BAR.
3. Test the operation of the programmer, valves, and solenoids for the air pulse jet.
4. Test the safety circuit, including the temperature control, solenoids of the burner, and the high temperature alarm. To
do this test, the sensor that controls the temperature may be heated and program it for a temperature that is close to
that of outdoors.
5. Turn on the exhaust fan (remember: the damper should be closed), the air compressor, and the screw conveyors.
6. Open the exhaust fan damper all the way.
7. With the drag conveyor, mixer, and dryer on, feed the plant with only fine aggregates (rock dust), do not use gravel.
The plant should operate only with fine and dry aggregates during the process of beginning the filter's operation. Set
the plant's flow to half its nominal flow. Allow at least 5 metric tons of fine and dry aggregates to pass through the
dryer. This step should be done with the fire turned off. Keep an eye on the filter load during this process and if it
reaches 70 mmca then do step 8.
8. Start up the bag cleaning system while following the pulse control adjustment parameters below:
Pulse time: 100 to 120 milliseconds (considering the scale of the pulse controller viewer);
Pulse frequency: 8 to 10 seconds (actual time measured with the help of a watch. The pulse controller scale is not
dependable. The frequency adjustment must be checked experimentally.).
9. For this first time, use diesel as the fuel for turning on the plant's burner and follow the correct adjustment to reach a
clear bright flame. Wait for the filter's temperature to reach 100 °C, but make sure it doesn't go over 115 °C. Control
the fire in order to avoid overheating the filter. If the temperature surpasses 115 °C, turn off the burner and wait for the
temperature to get back down to 80 °C and then turn it on again, the whole time keeping to the limits established in
this item. Keep the plant fed with aggregates under these conditions until about 10 metric tons of fine aggregates go
through it.
10. Adjust the burner so that there is no excess fuel and consequently no poor combustion, which is damaging to the
bags.
The pulse time for new bags can be less (100 milliseconds) and should be increased when the bag is older, up to
120 milliseconds. Longer times consume more compressed air;
The pulse frequency (interval) can begin with a longer time (15 seconds) and be reduced to up to 10 seconds
when the bag is very dirty or old. Shorter intervals consume more compressed air;
The time and frequency selectors are located inside the programming box.
11. Turn off the burner, stop feeding aggregates, and leave the exhaust fan on until the filter cools down.
12. Turn off the exhaust fan.
13. After 10 minutes, turn off the filter cleaning system.
14. After 5 minutes turn off the screw conveyors and check the state of the bags. If soot is beginning to form on them, the
burner should be regulated.

IMPORTANT

This initial operation with fine aggregates and diesel as the fuel is necessary every time that new bags are placed in the
filter, even if the substitution is partial.
The dust deposited on the bags keeps the fabric from having direct contact with the fuel soot, which ensures greater life to
the bags. This pre-coating process is essential.
Always dry the filter in the beginning and end of the operation. If this is not done, the bags run the risk of being
impregnated with humid dust and thus lowering the efficiency and life of the filter.
The enemies of the filter and of the bags are the following:
Poor combustion: this causes permanent obstruction to the bag;
Humidity: causes obstruction and decomposition of the bag;
High temperature: causes the bag to burn.
The pulse time regulation and interval between pulses should be according to the compressor's operation. See group
01.05.08 - Pneumatic System.
8 / 16 76179/0004
BAG FILTERS FILTRE A MANCHES
CC.15 / CC.17 / CC.19 08/2010