HVAC Planned Maintenance Roof 001 roof top unit Trane QRS990 J3254774: Preventative Maintenance - Quarterly -Inspect condensor or cooling elements. -Inspect control box, associated controls, wiring and connections. -Clean or replace air filter. -Remove and add refrigerant -Inspect conditioned airflow system (ductwork)—check for leaks. Roof 004 Roof top unit Trane QRS990 J3254777: Preventative Maintenance - Quarterly -Inspect condensor or cooling elements. -Inspect control box, associated controls, wiring and connections. -Clean or replace air filter. -Remove and add refrigerant -Inspect conditioned airflow system (ductwork)—check for leaks. Roof 002 Roof top unit Trane QRS990 J3254775: Preventative Maintenance - Quarterly -Inspect condensor or cooling elements. -Inspect control box, associated controls, wiring and connections. -Clean or replace air filter. -Remove and add refrigerant -Inspect conditioned airflow system (ductwork)—check for leaks. Roof 003 Roof top unit Trane QRS990 J32