Specifications include, but are not limited to: A. General Overview 1. There are two different types of work anticipated under this contract: 1) preventative maintenance and 2) general and emergency repairs to restore operation of the systems. Prospective s are being asked to provide costs for a fixed compensation preventative maintenance contract, which shall include compensation for all filters, belts, other related materials associated with the performance of preventative maintenance, labor, and overhead for each facility. 2. Compensation for general and emergency repairs to the systems will be on a time and material basis, with the scope of work to be mutually agreed upon by the City and the contractor. The contractor must be capable of making repairs or replacing equipment such as motors, pumps, pulleys, belts, compressors, gauges, instruments, filters, valves, piping, furnaces, boilers, or other appurtenances used to control the temperature, humidity, and air flow, and electrical lines, mechanical and control components are included. 3. The contractor shall furnish all labor, equipment, parts, and materials, to maintain and operate the respective HVAC systems in first class working order and operating condition at all times. The contractor shall provide the necessary transportation for workmen, materials, and equipment to fulfill the terms of the contract. 4. HVAC Preventative Maintenance Services shall be performed during the hours of 7:00am through 6:00pm and must be pre-scheduled and coordinated with each Department. B. General Maintenance All general maintenance needs to be perform in accordance to manufacturer’s specification and best industry practices. The following criteria are subject to, but no limited to: • Check filters and change if needed (filters shall be supplied by the contractor) • Inspect the entire system • Check all controls including thermostats, and damper operators when necessary • Check operation and condition of all components • Adjust and check motors, starters, valves, drives, and accessories • Lubricate all moving parts, motors, bearings, etc., add compressor oil as needed • Clean spray nozzles and air-cooled condensers • Acid clean condenser and evaporator coils • Check for refrigerant leaks and recharge if needed. • Adjust and lubricate damper linkage • Inspect air dampers and damper motors • Check and adjust: Gas fired unit heaters, gas fired boiler, oil burners, heating equipment controls • Inspect all interconnecting refrigerant, condenser water and chilled water piping • Inspect all insulation on the equipment and refrigerant piping • Inspect all capacity, temperature, and safety devices which control the equipment • Inspect stream traps and manual service valves at the equipment • Inspect electric wiring from the starter to the motor • All refrigerants shall be recovered and recycled in accordance with all applicable federal, state and local regulations. • Verify operation of garage carbon monoxide and nitrous dioxide sensors. • Check/Monitor and respond to computer control alarms. • All belts shall be replaced annually and coil cleaning shall be performed annually • Inspect and clean condensation pans and lines • Inspect and adjust tension on all belts and replace when necessary • Inspect and adjust all relays, contactors, switches, and controls as required • Check and maintain compressor oil levels • Check and adjust thermostatic expansion valves as required • Inspect equipment for rust and corrosion • Check and inspect thermostat • Install gauges and monitor pressure drops across filter banks and replace when pressure drop exceeds acceptable levels. • Tighten all electrical connections • Check Freon charge and repair leaks if necessary • Once a year disassemble and clean Information Technology inside units at all locations. • Make each Department Head aware of any issues that arise during the quarterly inspections
