Item 27 - As-Needed HVAC Repair Services

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4. Check and use boiler viewport to check main burner flame as required. 5. Turn off and secure boiler as required. 6. Check boilers for any unusual noise or vibration as required. 7. Inspect gaskets for any signs of leaks as required. 8. Examine the venting system as required. 9. Remove and / or inspect gas pilot assembly, reinstall in accordance according to factory specifications and tolerances. 10. Check boiler circulating pumps for proper operation and lubricate as required. 11. Check flame safeguard control for pilot and main flame ignition as required. 12. Check operation of blower motor and circuitry as required. 13. Check operation of gas valves and vents as required. 14. Inspect and tighten all electrical connections as required 15. Check and adjust all boiler limit pressure controls and running interlocks as required. 16. Check operation and adjust low water controls as required. 17. Check burner, pilot and main flame ignition as required. 18. Check and oil combustion air fan as required. 19. Check expansion tank and site glass as required 20. Check and record all entering and leaving water temperatures and pressures as required. 21. The equipment room shall be left in the same clean condition as existed prior to start of the work. 22. Refer to equipment O&M manual for any maintenance clarifications. Cooling Tower: 1. Provide four (4) quarterly inspections and maintenance. 2. Preventive maintenance as required. 3. Lock -out and Tag -out equipment as required. 4. Check starter contacts for excessive wear as needed. 5. Tighten all starter wire connections. 6. Check gear reducer and couplings. 7. Meg -Ohm motor and VFD's. 8. Check fan balance and motor(s) amps. 9. Clean and lubricate unit motor bearings and fan blades. 10. Check operation of media and flow. 11. Lubricate all dampers and linkages as necessary. Chilled Water Pumps: 1. Check pump and motor operation. 2. Check fault history report as required. 3. Check and operate bypass valves. 4. Checks and verify strainers for optimum flow. 5. Check and tighten all electrical connections as required. 6. Check starter contacts for wear as required. 7. Check and record motor amp. 8. Lube and grease motor bearings as needed. Johnson Controls: 1. Inspect and repair NCU 1 to NCU 12 for optimum operations. 2. Inspect and repair as needed 21 air handler controls and 46 VFD. 3. Inspect all damper motors controls and set points.