Daikin Double Skin Modular Air Handling Unit DS2TB-1819

Check for contamination, damage, microbial growth and corrosion

Check spray nozzles for deposits

Check functionality of the conductivity sensor

Check moisture eliminator for contamination, damage, scaling and corrosion

Describe any issues found during the check

Sign off on the monthly maintenance check

Visual inspection of air-to-air plate heat exchangers for contamination, damage and corrosion. Clean / Repair heat exchanger

Visual inspection of rotary heat exchangers for contamination, damage, corrosion and tightness. Clean / Repair heat exchanger

Visual inspection Heaters for contamination, damage, corrosion and tightness. Clean / Repair the Heater. Replace if required;

The unit should be maintained in line with the manufacturer’s recommendation

Please refer to the installation and maintenance manual for details

For Hygienic and Clean AHU, the face of the heat wheel should be inspected regularly for dust and dirt to check if the self cleaning due to counter flow and rotation of the heat wheel is insufficient

For a small amount of dirt, use a vacuum cleaner to clear off the dirt

For more stubborn dirt, use compressed air to dislodge the dirt but handle with care so that the heat wheel media is not damaged

Finally, for firmly attached dirt in the rotor, use hot water and a mild detergent to remove the dirt

The mild detergent may be removed with high pressure water cleaner with the nozzle 300mm from the heat wheel

For disinfection, please use an isopropanol-based substance such as LIV +45

For Hygienic and Clean AHU plate heat exchangers, please use a brush to clean the inlets and the outlets for normal ventilation applications

Check steam distribution system for deposits

Cleaned the steam distribution system?

Total number of Colony Forming Units (CFUs) in the humidifier water

If number of CFUs > 1000 CFU/ml: Clean, rinse and dry the tray, disinfect, test quality of supply water

Check functionality of the control valve

Readjusted the humidity limiter?

Sign off on the humidifier maintenance

Check Dirt accumulation in damper and in case clean it

Check the Sign of damage on damper and in case repair it

Check Turning torque of the damper and in case repair it;