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Aqua Mundus assist Grease Contractors Association

Aqua Mundus along with other leading industry contractors have put together a 2 page closure advise document on grease management systems.

GCA Equipment Preservation Guide for Grease Traps & Grease Management Systems

With the closure of food services establishments due to the COVID-19 outbreak, The Grease Contractors Association (GCA) would recommend the following course of action for your grease management devices. If you are in a position and it is safe to do so, there are some key measures you should be taking to protect your equipment. These measures will prolong the on-going life of the machine and ensure it is safe to use again in the future.

Please download the full guide here

Or visit our website page

Closure advice- Decommissioning

With the closure of your premises we would recommend the following course of action for your grease management devices.

Bio Dosing Pumps
There are not any issues with bio doing the drain during closure, however it is recommended that when the product container is emptied that the container is removed from the kitchen, a new container with product will be issues when you advise us that the kitchen is opening

Grease Removal Unit’s
Given the very short notice and projected length of the closure of the hospitality sector, GRUs which have not been fully mothballed by draining waste water, removing trapped waste food and effecting a complete clean down are likely to present a number of problems during the next few weeks. 

These include a build-up of hazardous bacteria, foul and penetrating odours and possible rodent attraction. 

To reduce this it would be advisable to

  1. Complete normal daily maintenance procedure once
  • Cleanout food straining basket
  • clean internal plates in unit
  • empty food basket

Run water through the device at least every other day for around 3-4 minutes.  


Switch off all electric supply to the unit. Your grease trap should be full of water before shutdown.

Please ask an audited grease contractor to send an engineer to service the GRU within one month of facility opening again.

Passive Traps

These units will begin to smell if left unattended. All internal grease traps should be cleaned out by an audited grease contractor engineer as leaving  organic material in the traps will encourage septic action resulting in mal odour and bacteria build up that could be hazardous to health and chances of blockages at start up.

If this is not possible it would be a good idea to run water through the trap for 3-4 minutes to reduce the chance of odours due to anaerobic digestion of residual organic material.


There will also be a massive service backlog when the closures are lifted which may well delay kitchen openings. 

Please be aware that  not taking the closure advice will lead into initial service being a more difficult and lengthy operation depending on what is found. 

    • Run water in the sinks for at least 3 minutes.  Your grease trap should be full of water before starting operation again.
    • Switch Grease Trap ON at the Power Socket


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