Passway™ Maintenance Instructions

Match servicing to the actual kitchen

Every installation loads a grease trap differently. Residential kitchens, staff facilities, cafés and commercial preparation areas can produce very different amounts of FOG and food-related solids.

Inspect the unit more frequently during the early operating period so the actual accumulation rate can be established. Once the loading pattern is understood, set a servicing interval that removes retained material before performance is affected.

Remove grease, solids and sludge

When cleaning is required, stop wastewater discharge through the unit and make the work area safe. Wear suitable gloves and protective equipment.

Open the cover carefully, empty removable food-solids components where fitted, and remove accumulated grease and settled material.

Clean accessible internal components without damaging the polypropylene body, seals, fittings, baffles or air-management components.

After servicing, reinstall all components correctly and refill the grease trap with clean water before normal kitchen use resumes.

Choose a method suited to the site

The grease, food solids and sludge removed from the trap still require appropriate management.

On commercial sites this commonly means removal through an appropriate grease-trap or waste service in accordance with the site’s trade-waste or wastewater requirements.

On suitable off-grid and privately managed wastewater sites, controlled on-site composting can also be considered where local requirements allow it.

WCTNZ® is developing the Grease Compost Box specifically for this purpose, with different sizes intended to suit different grease-trap servicing loads.

Suitable bulking materials can include untreated wood shavings, coarse untreated sawdust, dry leaves, shredded cardboard, bark and similar carbon-rich organic materials.

Keep a simple servicing history

Record the inspection or cleaning date, person or contractor completing the work, condition of the grease trap, waste removed, waste-management method used, faults observed and next planned inspection.

Service records can assist with day-to-day operation, warranty assessment and commercial trade-waste requirements.