What this application involves
Trolley washing covers any wheeled rack or transport cart used in food production and service: bakery rack trolleys, gastronorm meal trolleys, airline catering trolleys, hospital meal-service trolleys, and event-catering banquet trolleys. They share a common operational reality — they’re heavy (30–80 kg empty), tall (1500–2000 mm), and impossible to lift safely for cleaning.
In bakeries the trolley accumulates flour dust, dough drips, proofer condensation and oven splatter. In catering the trolley accumulates food residue, beverage spills, and the universal sticky film of multiple food types over multiple shifts. Untreated, these trolleys become microbiological breeding grounds (warm, moist, food-soiled) and visual liabilities during health-department inspections.
Why traditional methods fail
Manual trolley cleaning means a worker with a hose, a brush, and a bucket of detergent in a hose-down bay. The cycle takes 8–12 minutes per trolley. Three problems: (1) it’s ergonomically brutal — repetitive bending, lifting, twisting — and produces shoulder injuries that put workers on comp claims; (2) hose-down inevitably misses the inside of welded joints, the underside of shelves, and the wheel hubs where bacteria thrive; (3) it consumes enormous water volumes (300–500 liters per trolley vs ~50 liters in a sealed-chamber wash).
How the PTW-1900 handles trolley washing
Roll-in loading is the core of this product. The double-leaf hinged doors open the full chamber width; the floor is flush with the loading ramp (or pit installation flush with floor); the trolley wheels directly into the chamber on its own wheels. The operator closes the doors, selects the cycle, presses Start. The chamber’s 360° rotating base spins the trolley during wash so every angle receives nozzle impact, including under-shelf and behind-vertical-supports — the surfaces a hose never reaches.
The 6-minute cycle reduces the per-trolley cleaning labour from 8–12 minutes (manual) to 90 seconds (load + close + unload + open). That’s a 10x throughput multiplier per operator.
For very large trolleys (airline catering full-size 1000 mm width, hospital meal carts 1200 mm length), custom chamber dimensions accommodate up to 900 mm width × 1200 mm depth × 2100 mm tall.
Recommended cycle settings
Standard trolley cleaning runs the Standard 6-min cycle. Trolleys that have been in food-service for several shifts without cleaning (sticky beverage residue, dried food drips) may benefit from the Heavy 9-min with extended detergent dose. The 82°C rinse is mandatory for sanitization of the food-contact tray-level surfaces.
Trolley washing FAQ
Q: Our trolleys have plastic wheels and rubber buffers. Will 82°C water damage them? A: No. Food-service trolley wheels are typically polyurethane or nylon, both rated to 90°C+. Rubber buffers (EPDM, silicone) are similarly rated. The PTW-1900 cycle is well within the thermal tolerance of standard trolley components.
Q: Our trolleys are 1100 mm wide. Will they fit the standard chamber? A: Standard chamber is 750 × 1000 × 1900 mm — fits trolleys up to ~700 mm wide. For 1100 mm wide trolleys order the custom 1200 mm chamber width option.
Q: Do we need to remove the trays before washing the trolley? A: No — that’s the point of roll-in washing. Load trolley with trays in place. The wash cleans both the trays and the trolley structure in one cycle.
Q: How does the trolley dry after washing? A: The 82°C rinse causes residual surface moisture to flash-evaporate. A 60-second hot-air rest at the chamber exit completes drying. For visible-water-free finish on stainless trolleys, optional rinse aid (food-grade) is dosed in the final rinse.
Q: How heavy a trolley can roll into the chamber? A: Floor and chamber are rated to 250 kg gross trolley + load. Heavier trolleys (some banquet plate carts run 350 kg loaded) require reinforced floor option.