Specifications include, but are not limited to: Monthly tasks for Carrier chillers: 9.3.1.1. 9.3.1.2. Log of equipment general condition noting: operating data, noises, vibration, temperatures and pressures where applicable, including review of past operating reports Check safety and operating controls 9.3.1.3. Check refrigerant charge 9.3.1.4. Check oil level 9.3.1.5. Inspect control center 9.3.1.6. Check flow switches 9.3.1.7. Inspection reports to be completed and submitted within five (5) days to TPWD after each scheduled inspection 9.3.2. Annually — In addition to the monthly tasks detailed above: 9.3.2.1. Change oil filter 9.3.2.2. Take oil sample for analysis and provide written lab report 9.3.2.3. Take vibration analysis readings, provide written report 9.3.2.4. Change refrigeration filter 9.3.2.5. Change oil reclaim filter 9.3.2.6. Inspect relief valves and piping 9.3.2.7 Inspect and brush clean condenser heat exchanger tubes