Grease Converters are fitted with an automatic dosing pump which pumps a set amount of bio-enzyme or equivalent into the tank. Wastewater with FOG flows into the trap and this is broken down by the enzyme. The FOG (non-congealing) flows in solution with the wastewater into the wastewater system.
The important part of the operation is to ensure a continuing supply of enzyme is avaiable.
Place the enzyme container in safe non-spillable position and place the Auto Dose inlet pump hose into the container to within 10mm of the bottom. Ensure the enzyme feed line is connected to the Grease Converter.
Deposit 1 litre of bio-enzyme into the grease converter to initiate the enzyme reaction. This should be carried out the first time the unit is installed and repeated after every clean out.
The Auto Dose pump is pre-set for dosing. The pre-set is a guide only. It is the operator’s responsibility to check the correct breakdown rate of the FOG to ensure adequate dosage is applied to meet local authority resource consent requirements.
Do not connect dishwashers or glass cleaners to the Grease Converter as the water temperature will be in excess of the average operating limit of 50oC and damage the action of the enzyme.
Do not use cleaning chemicals that may affect the performance of the pump and enzyme. Cleaning fluids, degreasers and acids, will kill the enzyme /bacteria.
Do not dump solids or fryer fat directly into the Grease Converter.
AUTO DOSE PUMP
The Auto dose pump should be set for:
Time of day – should be set to the current date and time (the exact time is not important).
Dispense units – should be set to 120ml for a 170L converter and 200ml for a 250l converter.
Dispense days – should be set to DAILY.
Dispense times – should be set for one EVENT. A suitable dispense time for the event would be 1am, however one dispense event per day is all that is required.
The Mactrap grease trap operates by allowing gravity to separate fats, oils, and grease (FOG) and sediments from discarded greasy water. A series of baffles slows the flow of water and reduces turbulence, allowing lighter than water FOG to float to the surface and heavier than water sediment to sink to the bottom. Cleaner wastewater flows from the grease trap while the FOG and sediment is retained within the grease trap.
The very simple principle of operation works efficiently until the level of FOG increases to the point where separation fails and the wastewater outflow contains FOG, or the sediment levels increase to the point where the outflow is blocked. To ensure the continuing efficiency of the grease trap it must be periodically cleaned, and both the FOG and sediment removed.
AFTER-INSTALLATION CARE AND SERVICING
Whilst this product is highly robust, care is required to ensure efficient operation.
Water temperature. The grease trap is certified to operate with water temperatures up to 65oC. Higher continuous temperatures may cause sagging.
Chemicals. The grease trap is tested to handle most kitchen factory type chemicals especially as they are usually diluted with water. Pure benzene and concentrated sulphuric acid should not be used.
Sink Filters. Grease traps are not a rubbish bin, so the more solid rubbish pre-removed using sink filters, the higher the efficiency of the grease trap operation. FOG solidifying on the surface of the water is not the major source of distasteful odours. Food solids rotting as sediment is typically the source.
Clean Out. The frequency of clean out is totally dependent on how much fat, oil and grease is intercepted. Under normal usage, Mactrap recommends at least two clean outs per year, however heavy use or excess solids may require more frequent clean outs. In normal circumstances grease traps are cleaned out by a vacuum truck. The entire contents are drained and removed before refilling the grease trap for continued operation.