After-sales Service Total Heat Exchanger
Maintenance Details
Maintenance and Inspection Guidelines for Standalone Total Heat Exchanger
| Part name | Periodic inspection | Preventive maintenance | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Part category | Part name | Inspection details | Inspection methods | Judgment criteria <Guideline> | Maintenance details | Inspection cycle | Replacement cycle | ||||
| 1 year | Others | Hours of use | Years of use | ||||||||
| Standalone Total Heat Exchanger | 1 | Heat exchange element | Rotating type | Check for clogging and damage | Visual inspection | No clogging or damage | Cleaning or replacement | ● | 10 years | ||
| Static type | Check for clogging and damage | Visual inspection | No clogging or damage | Cleaning or replacement | ● | 10 years | |||||
| 2 | Filter (non-woven) | Check for dirt, clogging, and tears | Visual inspection | No significant dirt, clogging, or tears | Cleaning or replacement | Monthly | 1 year | ||||
| 3 | Air seal (rotating type) | Check for gaps and tears | Visual inspection | No gaps or tears | Replacement | ● | 3 years | ||||
| 4 | V-belt (rotating type) | Check for wear and scratches | Visual inspection | No significant wear, scratches, or cracks | Replacement | ● | 5 years | ||||
| 5 | Geared motor (rotating type) | Check for operating noise Measuring insulation resistance |
Auditory inspection, 500 V megger | Abnormal noise 1 MΩ or greater |
Replacing if bearing noise is loud Replacing if insulation is deteriorated |
● | 10000 Hr | ||||
| 6 | Boss(rotating type) | Check for operating noise and vibration | Auditory and visual inspection | Abnormal noise and abnormal vibration | Lubrication or replacement | ● | 15000 Hr | ||||
| 7 | Exterior | Check for appearance | Visual inspection | No paint peeling, rust, or corrosion | Repair painting or replacement | ● | 15 years | ||||
Maintenance and Inspection Guidelines for Total Heat Exchange and Ventilation Unit
| Part name | Periodic inspection | Preventive maintenance | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Part category | Part name | Inspection details | Inspection methods | Judgment criteria <Guideline> | Maintenance details | Inspection cycle | Replacement cycle | ||||
| 1 year | Others | Hours of use | Years of use | ||||||||
| Total Heat Exchange and Ventilation Unit | 1 | Heat exchange element | Rotating type | Check for clogging and damage | Visual inspection | No clogging or damage | Cleaning or replacement | ● | 10 year | ||
| Static type | Check for clogging and damage | Visual inspection | No clogging or damage | Cleaning or replacement | ● | 10 year | |||||
| 2 | Filter | Check for dirt, clogging, and tears | Visual inspection | No significant dirt, clogging, or tears | Cleaning or replacement | Monthly | 1 year | ||||
| 3 | Electric motor | Fan motor | Check for operating noise Measuring insulation resistance |
Auditory inspection, 500 V megger | No abnormal noise 1 MΩ or greater |
Replacing if bearing noise is loud Replacing if insulation is deteriorated |
● | 20000 Hr | |||
| 4 | Geared motor (rotating type) | ● | 10000 Hr | ||||||||
| 5 | Bypass damper (including geared motor) |
Check for operation Check for dust |
Visual inspection | No abnormal operation No dust |
Replacement if there are operational issues Cleaning |
● | 13 years | ||||
| 6 | Electrical components | Circuit board | Check for dust | Visual inspection | No significant dust | Cleaning | ● | 25000 Hr | |||
| Terminals | Check for loose terminals, wire contacts, and dust | Tightening up Visual inspection |
No loose terminals, wire contact issues, or dust | Tightening up if terminals are loose Re-insertion Clean if there is dust |
● | 13 years | |||||
| Connectors | Check for disconnected pins Check for dust |
Visual inspection | No disconnected pins No dust |
Replacement Cleaning |
● | 13 years | |||||
| 7 | Humidifier | Membrane type | Check for dirt and leaks | Visual inspection | No significant dirt and no leaks | Washing or replacement | ● | 5 years | |||
| Drip evaporation type | Check for dirt | Visual inspection | No significant dirt | Washing or replacement | ● | 3 years | |||||
| Pressure reducing valve | Check leaks | Visual inspection | No leaks | Replacement | ● | 13 years | |||||
| Solenoid valve | Check for operation | Auditory inspection | No abnormal operation | Replacement | ● | 13 years | |||||
| Strainer | Check for dust | Visual inspection | No dust | Washing or replacement | ● | 5 years | |||||
| Drain pan | Check for leaks, corrosion, deterioration, clogs, peeling paint, cracks, and water flow | Visual inspection | No leaks, corrosion, deterioration, clogs, peeling paint, or cracks Able to drain water |
Washing or replacement | ● | 13 years | |||||
| Float switch | Check for operation | Visual inspection | No abnormal operation | Replacement | ● | 5 years | |||||
| Supply tank | Check for dirt, corrosion, deterioration, debris | Visual inspection | No dirt, corrosion, deterioration, debris | Washing or replacement | ● | 13 years | |||||
| 8 | Exterior panel | Check for appearance and insulating material | Visual inspection | No significant rust or corrosion No insulating material peeling |
Repairing | ● | 13 years | ||||
| 9 | Remote control switch | Check for appearance, display, and controllability | Visual inspection | No damage, display issues, or operational issues | Replacement | ● | 13 years | ||||
Remarks
1) If the equipment falls under the category specified by laws and regulations, e.g., the Act on Maintenance of Sanitation in Buildings, please perform maintenance and inspection accordingly.
2) Operating hours are estimated based on 10 hours per day and 2500 hours per year. Confirm when entering the maintenance contract, as actual hours may vary.
3) The expected lifespan requiring product replacement is 13 – 15 years. The holding period for functional parts is at least six years after production ends.
4) The above conditions assume a general office building.
5) Please have a specialized contractor handle the maintenance of electrical components.
6) The above maintenance periods are general guidelines and may require special consideration based on usage, installation conditions, and water quality.
