In order to obtain better performance from drainage channels, it is necessary to properly maintain and clean the channels to prevent them from getting clogged with soil, leaves or other sediment, thus rendering drainage ineffective. Inspection routines are essential to preserve efficient drainage channel performance and must be carried out frequently and at regular intervals. The frequency depends on the location they are based and should be carried out at least once a year, along the entire length of the channel.
When and where is it important to carry out drainage channel maintenance?
Channels inspection and maintenance is most frequently executed under the following conditions:
- In cold or tropical regions with extreme climatic conditions;
- In countries with dry climates, where the rainfall rate is very low. Therefore, as it rains very rarely, the channels can often remain empty and various debris, leaves and sediments can accumulate inside the channels, as there is no continuous flow of water that would help keep the channel clean;
- Regions with increased solid material contribution such as leaves, the use of de-icing salt during the winter period and lack of road sweeping.
The various steps for the proper maintenance of the drainage system:
- Visual inspection of grids
- Cleaning of grids
- Grids removal
- Cleaning of channel bodies and drain boxes
- Visual inspection of the installation environment
1.Visual inspection of grids
Before proceeding with the cleaning of the channel, a visual inspection is necessary, that is, checking the drainage channel grids for mechanical damage and/or clogging due to debris ingress and with bolted grids, verifying that all connections and locking systems are properly secured.
2.Cleaning of grids
At this point we proceed with the cleaning and maintenance process of the grid, in which coarse and solid debris (for example cigarettes, paper, stones) can be swept away with a broom. The grid openings are then thoroughly cleaned, with a high-pressure cleaner, to ensure the drainage function. Small stones can be removed with the help of a screwdriver or other sharp object, taking care not to damage the grids.
3.Grid removal
Once the cleaning process of the grids has taken place, one proceeds by going to remove the grid from the body of the channel in order to check it internally, by going to inspect it for debris inside. Also with slotted channels, the use of an inspection camera is possible.
4.Cleaning of channel bodies and drain boxes
Before the cleaning work is completed, it is necessary to provide free flow in the drain box, then proceed with the channel body. In the event of a small accumulation of waste, the drainage channels can be cleaned with a broom or persistent dirt can be cleaned with a high-pressure cleaner (jet pressure up to 120 bar) by running the cleaning water along the entire length of the channel. It must be ensured that all sediment or deposits in the system are loosened and rinsed down to the plumbing or drain boxes. The discharge points of the drain boxes must be cleaned during the maintenance interval, they must then be removed and cleaned, also checking that the pipework is draining properly. Finally, before reinstalling the grid, check the corner seats and support surfaces of the grid and clean them if necessary.
5.Visual inspection of the installation environment
Adjacent surfaces such as flooring, concrete or asphalt must also be checked at regular intervals. It is important to check for any damage or an elevation of the channel or grid above the backfill surface.
Discover our SABdrain range and the most suitable channel for proper water drainage or contact us for more information.
