Decide who checks the unit, who arranges cleaning and where records are kept. The person opening the kitchen should know how to report an unusual smell, slow drainage or visible problem without attempting unfamiliar maintenance.
Northumbrian Water’s grease trap guidance explains the importance of regular inspection, manufacturer-led cleaning and proper waste disposal. Use these principles alongside the instructions for the installed equipment.
Learn from actual accumulation
An effective schedule uses observations rather than a date copied from another site. Keep the interval under review during the first operating period and after significant changes in use.
Record each visit in a consistent format:
- Date and the unit or location checked.
- Accumulation observed and any signs of poor performance.
- Cleaning or emptying completed and by whom.
- Defects, difficult access or parts requiring attention.
- Waste collection records and the next planned action.
If the trap approaches its operating limit before the next visit, shorten the interval and review the source of the load. If performance remains poor immediately after cleaning, investigate installation, connected equipment and downstream drainage rather than simply repeating the same clean.
Reduce what reaches the trap
Grease management starts at the work surface. Keep waste oil and food solids out of sinks and arrange appropriate collection. Staff practices matter during preparation, washing-up and end-of-day cleaning.
A trap is part of that system, not permission to pour oil into the drain. Include disposal instructions in kitchen induction and make bins and waste containers convenient to use. Review these arrangements after menu changes or when new staff join.
Do not assume chemical dosing replaces the cleaning requirements for the installed trap. Confirm how any treatment fits the equipment instructions and the complete grease-management arrangement.
Plan access and waste handling
Cleaning needs a workable access route and enough time to complete the required process. Agree kitchen restrictions, safe handling arrangements and the disposal route in advance. Keep lids secure and leave the area ready for normal use.
Where an external contractor removes waste, retain the relevant collection documentation with the maintenance record. That provides a clear history when responsibility changes between kitchen managers, tenants or managing agents.
Frequently asked questions
Is monthly cleaning always enough?
No. The correct interval depends on the unit and actual loading. Use the manufacturer’s instructions and inspection records to set and review the schedule.
Why is the drain still slow after the trap is cleaned?
The restriction can be elsewhere in the drainage or the trap arrangement can have a defect. Record what was cleaned and investigate the continuing symptom.
Should a quiet kitchen stop maintaining its trap?
No. Review the schedule against its reduced use and the equipment instructions. Low use changes the assessment; it does not remove the need to check condition and performance.
Related guidance and services
Read recurring drain blockages. Explore Grease Traps and Interceptors, Drain Cleaning and Maintenance and Planned Preventative Maintenance.
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