It uses pump to drive chilled water into the system and uses ducting to provide the cold air inside the building. This helps to pressurize the air inside the building thus preventing dust or dirty air to come inside.Īn air handling unit commonly uses chilled water on its evaporator coil to cool the air.ĪHU comes in one assembly and consists of intake filter, blower, motor, and evaporator. Brief Description of Air Handling UnitĪir Handling Unit is used to bring fresh air from outside the building to inside the building. The Supervisor and the site engineer shall assure that this maintenance procedure will be followed during all works. He shall be be competent enough to operate and maintain these equipments to avoid any maloperation or downtime of the equipment due to breakdown.
It is the responsibility of the maintenance engineer or technician to properly operate and maintain AHU’s. Scope of this standard maintenance instruction also covers all Air Handling Units which are under hvac maintenance contracts and installation projects.
