• Repair:

  • If the wheel is dirty causing reduced efficiency, cleaning and maintenance can restore it to full functionality.

  • If the bearings or seals are worn out, they can typically be replaced or lubricated.

  • Minor structural damage (such as dents or cracks) can often be repaired with special bonding agents or welding, depending on the wheel’s material.

• Replacement:

  • If the wheel’s material (e.g., aluminum, desiccant, or silica gel) is degraded and unable to transfer heat effectively, replacement is typically required.

  • If the wheel is severely damaged, such as cracks, warping, or major leaks, it may be more cost-effective to replace it.

  • If repairs are frequent or costly, replacing the unit might be more economical long-term.

Repair Process:

• Inspection: Check for damage, dirt, and wear on the wheel, bearings, and seals.

• Cleaning: Clean the wheel and internal components, removing dirt, mold, and scale buildup.

• Seal/Bearing Replacement: Replace worn seals or bearings to ensure proper rotation.

• Re-balance and Test: After repairs, balance the wheel and perform operational tests to verify performance.

• Removal of Old Unit: Remove the damaged or old heat recovery wheel.

• Install New HRW: Place the new wheel and ensure proper alignment with the casing and seals.

• Rebalance and Test: Ensure that the new HRW is running smoothly, without excessive vibrations, and perform operational tests.