Maintenance Instructions
There should be little maintenance required with the Stormcell^® system provided the Design and Installation Guidelines manual, as issued by Hydro, is followed.

The major aim of a maintenance regime will be to prevent siltation of the throughflow / distribution pipes which are below the Stormcell^®. To this end these pipes should be laid to achieve self-cleansing velocities wherever possible.

A catchpit chamber immediately upstream of the Stormcell^® tank is a useful addition to the system. It is imperative that the collection sump is not allowed to overfill which would lend to silt carry-over into the distribution pipes.

As all schemes are different, the frequency at which the catchpit should be emptied will need to be determined on site. This is simply a function of the sump volume and the volume of settleable grits and silts entering it.

As per the Hydro-Brake^® Flow Control installation, it is recommended that the system be inspected monthly for 3 months and thereafter at 6 monthly intervals. In addition, it is suggested that the installation should be inspected immediately following the first major storm event, whenever this should occur after installation.

It should also be noted that more regular inspections may be required should the catchpit fill more frequently than at 6 monthly intervals.

Stormcell^® Maintenance Requirements
Due to the patented distribution pipework arrangement incorporated into a typical Stormcell^® Storage System, there should be little or no maintenance requirements, provided the system is installed in accordance with the instructions issued by Hydro.

The major aim of a maintenance regime will be to inspect the system to ensure that the distribution pipework arrangement is operational and free from blockages.

To this end, the pipes should be laid to achieve self-cleansing velocities wherever possible. A catchpit chamber included immediately upstream of the Stormcell^® tank is also a useful addition to the system and considered good engineering practice prior to any storage or infiltration device. This will help to collect settleable material such as silt grit and stones, as well as provide an access chamber to the distribution pipework, allowing the entire pipework arrangement throughout the tank to be inspected.

As all schemes are different, the frequency at which the catchpit should be emptied will need to be determined on site. This is simply a function of the sump volume and the volume of settleable material entering it.

As with Hydro-Brake^® Flow Control installations, it is recommended that the system be inspected monthly for 3 months after installation and thereafter at 6 monthly intervals. In addition, it is suggested that the installation should be inspected immediately following the first major storm event, whenever this should occur after installation.

It should also be noted that more regular inspections may be required should the catchpit fill more frequently than at 6 monthly intervals.

Should the catchpit fill and the material be subsequently re-entrained into the flow, it will tend to pass directly through the Stormcell^® system and be contained within the distribution pipework. Whilst the material will not enter the Stormcell^® media, consideration may need to be given to removal of any material prior to the discharge point downstream to prevent pollution of watercourses etc.. The Downstream Defender^® supplied by Hydro can be a useful addition for this purpose.