In-Sink Waste Disposal Units – no longer supported by MCFT.
In the light of a fatality in December 2017 and inspection of similar appliances subsequently, we have taken the decision not to supply or continue to repair In-Sink Waste Disposal Units.
We have seen significant failures on these units - and when units fail, they can fail catastrophically:
The macerator plate is driven directly by the motor underneath and the ingress of water into the motor housing is protected by a rubber seal (typically Viton). However, the manufacturers instructions make it clear that no oils or fats, hot water or detergents should be washed down the waste disposal unit – given the location of these, typically on dishwash entry tables, that is universally unrealistic.
When the seal goes, water – and waste food – can fill the motor housing – and from there, permeate through to the electrical junction box on the outside of the motor casing. Whilst the manufacturers call for RCD protection, given the scope of work and competence of catering equipment installers, this falls to the customer to arrange and, in our experience, is not present.
Instructions for service visits have, in the light of incidents been changed to require inspection of the seal and, where appropriate, the replacement of same. Inspection of the seal requires removal of the motor – a significant task, typically requiring 2 technicians – significant time and cost which would not have been communicated when the appliance was purchased – and technicians are understandably reluctant to change seals on appliances where they know any subsequent issues may rebound on them.
All it needs is a confluence of mishaps and there is now a significant risk – to users and maintainers – of electric shock – which has, as already noted, potentially fatal consequences.
We see no alternative solution to this form of appliance : the configuration, size and nature of use means the appliance is inherently vulnerable.
Concurrently, there has been much discussion about food waste in the Water systems. Whilst there were mixed reports in Scotland (impact of road transport negating environmental benefits) and the anticipated banning of waste disposal units in England was pulled as a result, it’s clear that the Fats, Oils and Grease impact has not gone away .
Put simply, food waste should not be disposed off into the drains.
To explore appropriate alternative solutions for managing and disposing of food waste, our friends at Tricon would be pleased to help.
We regret the imperative for this approach but the evidence is clear and sustained and we cannot ignore it.
Chris Craggs
CEO
