Views: 321 Author: Site Editor Publish Time: 2025-09-10 Origin: Site
Ask anyone who uses a brazed plate heat exchanger (BPHE)—if it’s not maintained, it will silently start underperforming. But you don’t need to tear things apart or call in a plumber during the night shift. Let’s walk through how to keep your Aidear BPHE running like a champ. Compact, efficient, and dependable—just like we built it to be.
Tiny internal channels can be a perfect trap for debris, scale, or biological growth. Left unchecked, these reduce flow and thermal efficiency.
Over time, fouling increases pressure drop and slows heat transfer—compensating typically means higher energy bills and more wear on the system.
Isolate and drain the BPHE via isolation valves.
Attach a CIP system or pump.
Circulate a weak acid solution (e.g., 5% phosphoric or oxalic acid), ideally at 1.5× normal flow, reversing direction every 30 minutes.
Continue until pressure drop normalizes or pH stabilizes (~30 mins).
Rinse thoroughly with fresh water until neutral pH is reached.
Avoid cleaners that attack copper or stainless steel—chloride or strong acids can corrode plates. Always choose manufacturer-approved agents.
When applicable, reverse flow at 1.2–1.5× operational pressure to dislodge soft debris. This is a quick, non-chemical option when partial clogging starts.
Because BPHEs are sealed blocks, mechanical cleaning isn’t feasible. Use only gentle chemical methods—aggressive scrubbing or harsh tools can ruin channels.
Always flush opposite to normal flow. Maintain recommended pressure—don’t starve the system or blast it beyond stress limits.
After using acids, neutralize with mild alkali (like 1–2% NaOH or baking soda) to protect materials, then rinse till pH-neutral.
Never use brushing or pressure that could warp plates or crack brazes. Avoid abrasives and acidic solutions that exceed compatibility.
Set a baseline pressure and monitor routinely. A rising pressure drop signals fouling. pH checks help catch residual cleaning chemicals.
Monthly quick checks (pressure, temp) and bi-annual CIP routines help catch performance dips before they become big issues.
Aidear’s BPHEs are designed to be compatible with CIP routines—support ports and clearances are built with servicing in mind.
With copper- and nickel-brazed options, your BPHE is matched to media and cleaning chemistry—no risk of premature corrosion.
Get maintenance guidance, data logs, and cleaning agent support from Aidear’s service network anytime.
Cleaning BPHEs doesn’t have to be painful. With regular CIP, smart fluids, and gentle handling, you’ll keep your BPHE humming efficiently for the long haul. And with Aidear’s thoughtful design and support, that efficiency stays reliable.
Q1: How often should I clean?
Depends on your system and fluid cleanliness, but start with quarterly checks and annual CIP as a good baseline.
Q2: Can I just flush with water?
Great for light fouling. Heavier deposits need CIP with compatible cleaning agents.
Q3: Are DIY cleaners safe?
Only use if approved. Harsh chemicals can damage brazed plates—ask Aidear first.
Q4: What if back‑flush fails?
Then it’s time for chemical CIP. Manufacturers often provide cleaning solutions tailored to fouling types.
Q5: Can Aidear help if I’m unsure?
Absolutely—they provide sizing, material advice, and cleaning protocols to keep your BPHE efficient and healthy.
