Specifications include, but are not limited to: a. CHILLER PREVENTIVE MAINTENANCE MONTHLY INSPECTIONS shall include: 1) An internal visual examination of individual units with access doors and covers open or removed 2) Clean all microchannel condenser coils with water or cleaner approved for microchannel coils every month that the chiller is in operation. Coils shall be cleaned and rinsed in the opposing direction to air flow. 3) A check of all belts, replacing those worn, cracked, dry rotting or broken and checking belt pulleys 4) Check operation of all motors, pumps and compressors associated with chiller and cooling tower operation 5) Lubricating all motors, bearing shafts, dampers, and linkages as needed monthly during the contract year; at a minimum of once during midseason inspection in July and once prior to winter shutdown 6) Check and tighten wiring connections and terminations on contactors, starters, motors, relays, controllers, safety devices and components, and test for proper operations 7) Re-secure all covers, panels, fastening devices, and replace gaskets where necessary to eliminate air and water leakage or damage into unit and building 8) Recharge refrigerant as needed, locate and repair leaks (refrigerant billable upon approval by Technical Lead or designee) 9) Add compressor oil, change oil in compressor and related equipment (e.g., purge system) as required (billable upon approval by Technical Lead or designee) 10) The contractor is responsible for the proper disposal of all materials, including oil. PGCPS dumpsters are not to be used 11) The contractor will be responsible to maintain or subcontract the Controls Contractor that has the system in that building for all DDC and pneumatic controls associated with equipment operation. DDC Controls are direct digital controls that are on most PGCPS equipment but not all. Some equipment uses pneumatic controls to maintain equipment operations. The Contractor must provide Controls Staff Labor Rates and certifications to perform these tasks. 12) Checking the Compressor Oil System for the following items: ● Changing oil, oil filter and dryer (billable upon approval by Technical Lead or designee) ● Conducting analysis on oil and oil filter at an independent laboratory ● Checking oil pump, seal and motor ● Cleaning the dirt leg ● Checking heater and thermostat ● Checking all other oil system components including cooler, strainer and solenoid valve where applicable
