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

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;

Check the fan motor for any damage, cracks or detergants. If there is a dust then clean it

Check Belt drive tension of the fan and in case of it re-tighten it

Check V-Belt condition of the fan and in case of the damage replace it

Sign off on the fan maintenance

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

Ensure a positive seal between the rotor face and frame structure

Check if the seals are intact and contact the casing and rotor media

Check if there is excessive wear

Ensure there is no significant leakage between the casing and interconnecting duct work

Check for misalignment of the drive belt on the pulley or periphery of the rotor

Check the belt joint. Replace it, if necessary