Quarterly Package HVAC Unit Preventative Maintenance Meet with City contact and explain the preventative maintenance services to be performed and where Contractor will be working. Visually check the coils for any damage, flaws, interference, and overall operations. Brush the coils if needed or propose a scheduled coil cleaning if required. Inspect and check the package HVAC for proper operation making sure to review interlocks, and vibration or noise problems. Check starter and tighten electrical connections. Check the system safety controls. Clean coils with biodegradable coil cleaning solvents and pressure wash as needed per contract terms. Clean the evaporator condensate/drain pan and related piping to ensure proper water flow. Install condensate chemical tablets and service the condensate pan if necessary. Inspect the motors and/or shaft and bearings for any problems or issues, then lubricate as needed.
