The ESP solution to grease and smoke pollution

Local Legislation:

Local Legislation requires increasingly that the amount of grease and smoke in kitchen exhaust fumes is reduced to lessen the nuisance of smells to the neighbourhood. Our ESP system gives the restaurant a clean, non- polluting image, while complying with local legislation.

Fire Risk Reduction:

Grease build up in the ducting is significantly reduced with an ESP. This reduces the risk of fire in the ducts and fire spreading from the source to different parts of the building.

Efficiency:

The ESP system is a very efficient means for removing particles and it can remove particles down to sub-micron size (0,01). When installed correctly, the unit can achieve an efficiency up to 98%.

Pre and After Filters and Oil Drain:

Each unit is provided with standard mesh filters designed to protect the electrostatic filter section (Mesh filters are not provided with Autowash). We can also provide specialist oil demisters and other pre filters for different applications. The units are all fitted with a drip tray and an oil drain point to allow collected waste grease and oil to be drained away.

Installations:

The Esp is installed inline in the ducting. The unit should be located as close as possible to the extraction hood to reduce grease build up within the ducting. This reduces the need for regular duct cleaning. If space is limited in the kitchen then the unit(s) can also be installed outside, upstream of the extraction fan.

Pressure Loss:

The Esp is characterised by a remarkably low pressure drop (120-190 Pa). the advantage is that existing extract fans often do not need to be replaced.

Maintenance:

Only regular cleaning of the filters, ioniser and collector cells with warm water and detergent is needed. Purified Air offer a cleaning and maintenance service operating on an exchange system. This is a cost-effective service available in the UK direct from the manufacturer and in other selected countries via our agents. Taking out a maintenance contract ensures that your system is in full working condition at all times. This assumes an appropriate maintenance frequency and professional cleaning.

AUTOWASH OPTION

The autowash system has been designed as a cost-efficient alternative to the manual wash type. The process is designed to operate a daily program to ensure that the electrostatic components remain in a clean and serviceable condition. As the program operates daily not only are there significant savings with maintenance costs but as the components are in a near new condition the performance of the electrostatic filter will always be at optimum. As components become dirty during normal use the filtration efficiency reduces as the dirt on the collectors builds up to form insulation, this affect will be minimised with the Autowash process. It should be noted that the Autowash system will still require some periodical manual maintenance.

The design uses minimal, energy water and detergent so the overall process is cost-efficient. The system is designed to operate during the period when the kitchen is closed. The wash cycle is controlled via a PLC module and has several stages as follows.

1. The Esp system and the main extract fan are switched off.
2. First detergent cycle.
3. First rinse cycle.
4. Second detergent cycle.
5. Second rinse cycle.
6. Drying stage using the main extract fan.
7. Finally, the extract system and the ESP are reactivated so that they are ready to switch on for the next day operation.

The ESP module has been redesigned so that all 2011 generation models onwards can incorporate the Autowash option. Any new generation unit can be converted to an Autowash system you simply need to add the MNA (motorised nozzle attachment) to each flange of the ESP. The flanges are pre drilled to mate up. Once this is done the unit is simply connected to an Autowash cabinet.

The principle of Electrostatic Precipitators

The ESP units are used to clean the airstream of grease and hydrocarbons(smoke) in kitchen exhaust systems. They are highly efficient and can remove particulate down to sub-micron (0.01 micron) size. The filters efficiency of up to 98% is attained during a single pass through the ESP, based on the charging of particles by an ionisation section which are then trapped on the earth plates in the collector cell. Larger particulate in the airstream can be removed by the pre-filter and

lastly an after filter can prevent any re-entrainment of agglomerated grease on the collector and aids good air distribution.

Efficiency Achievable

Efficiency can vary with different particulate and air volumes.

Filter Technology

• Pre-filter

Eurovent Class 9

• Ionisation Section
• Collector section

Eurovent class 9 Filter surface 15 m² per collector (ESP 1500E 15 m² , ESP 3000E 30 m², ESP 4500E 45 m²)

• Final filter

Eurovent Class 9