The Small Drain Part That Can Cause Big Problems in Your Cool Room or Ice Machine
💡 What Is a P-Trap?
A P-trap is a curved section of pipe found in the drainage systems of cool rooms, ice machines, display cabinets, and HVAC units. It holds a small amount of water that acts as a barrier to stop sewer gas and warm air from entering your refrigeration space.
Though small, the P-trap is critical to hygiene, drainage, and food safety.
🎯 What Does a P-Trap Do?
| Function | Why It Matters |
|---|---|
| Seals out odours | Blocks sewer and drain smells from entering food prep areas |
| Prevents warm air intrusion | Keeps cold room temperatures stable by sealing off the drain line |
| Supports proper drainage | Helps condensate water flow freely and prevents backflow |
| Reduces mould and bacterial growth | Moisture control helps prevent slime and pink mould |
💧 Blocked P-Traps Can Lead to Leaks
A blocked or dry P-trap can result in:
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Water leaks around equipment
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Drainage overflow into walls or floors
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Slip hazards and property damage
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Mould or pink bacterial growth (Serratia marcescens)
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Foul odours or failed hygiene inspections
We recently responded to a Brisbane café with a strong odour in their cold room — the P-trap had dried out and allowed gases to enter. Our team restored the seal and cleaned the drain line immediately, avoiding downtime and health risk.
🔧 What Causes a P-Trap Blockage?
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Organic build-up (grease, biofilm, food particles)
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Lack of regular cleaning or servicing
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Bacterial growth in high-moisture areas
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Incorrect pipe slope or installation
✅ How Acro Refrigeration Helps
As part of every Preventative Maintenance Agreement (PMA), we:
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Inspect and clean all P-traps and drainage points
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Flush and clear blockages
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Check for proper drainage slope and dry traps
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Provide hygiene and compliance reports
This proactive approach prevents unexpected leaks, food safety risks, and costly repairs — giving you peace of mind that your refrigeration systems are clean, compliant, and efficient.
📞 Don’t Wait Until There’s Water on the Floor
If you’ve noticed smells, pooling water, or inconsistent refrigeration, it could be as simple as a blocked P-trap. Contact Acro Refrigeration today to schedule a hygiene inspection or request a tailored PMA plan.
- 📆 Book a Service Visit Now
- 📞 1300 227 600
- 📩 Get a Free Maintenance Quote
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