Cooling Tower Motor Replacement

Loma Linda s Cooling Tower #2a fan motor has been operational for 12 years. The motor s normal life expectancy is 15 to 18 years. It is now operating at a low amperage and is affecting the proper operation of the tower. The conduit from the fan motor to the cooling tower s control panel runs underground. When trouble shooting the Cooling Tower s fan motor, technicians found water inside the conduit. Because of the seepage, the underground line needs to be abandoned, capped, and replaced with an above ground line. OBJECTIVES: Contractor shall furnish all supervision, labor, transportation, equipment, materials, supplies, and tools, to accomplish the following: Provide crane, safety permits, and proper operating licenses. -- Cranes at VA Loma Linda are authorized only on weekends (Due to safety of patients and employees). Set safety parameters for crane operations. Use proper protective gear to perform all tasks (helmets, gloves, safety glasses, and fall protection equipment. Perform proper lockout/tagout procedures for cooling tower #2a s variable frequency drive (VFD) control panel. Perform proper lockout/tagout procedures for cooling tower #2a s water supply and discharge lines. Properly drain cooling tower #2a with assistance of Plant Operators. Direct Plant Operators to place cooling tower #2a down for repairs on Boiler Plant Office s computer. Remove cooling fan motor assembly, including motor drive sheave, bushing, and belt. Remove all existing conduit (Above ground) and electrical wires running from the VFD control panel.to the Cooling Tower fan motor. Located below the Cooling Tower, cap the conduit that runs underground at ground level. Install new, rigid, two-inch diameter, liquid tight conduit above ground from the VFD control panel to Cooling Tower fan motor (approximately 80 feet). -- Use Unistrut Brackets to anchor electrical conduit eight feet above ground on wall opposite of the Cooling Tower (Where VFD control panel is located) -- Use Unistrut Brackets to anchor electrical conduit to outside of Cooling Tower. -- Run two-gauge electrical feed wires inside conduit from VFD control panel to Cooling Tower fan motor. -- Run six-gauge electrical ground wire from VFD control panel to Cooling Tower fan motor. Install new Cooling Tower fan motor assembly, including motor drive sheave, bushing, and belt IAW specifications listed in Section III below. Take amp and ohm readings on new Cooling Tower fan motor to verify proper operation. Remove and dispose of all trash daily at an approved dump site. COOLING TOWER MOTOR/CONDUIT SPECIFICATIONS: Size of Power: 40 Horsepower Phase: 3 Voltage: 120/24OV Wire: 2 Gauge Ground Wire: 6 Gauge Conduit: Rigid, Two-inch Diameter, Liquid Tight (Approximately 80 Feet) SPECIFIC REQUIREMENTS: Contractor shall: Schedule with Contracting Officer Representative (COR) or Designee five (5) business days prior to starting work. Conform to the following standards, policies, regulations, governing agency, and any other local, state, or federal guidelines that are not listed here. -- OSHA Regulations, www.osha.gov -- NFPA, www.nfpa.org -- C-10 Electrical Contractor Check in with Boiler Plant personnel daily. Provide work schedule to Boiler Plant personnel daily. Use proper protective gear while working on VA property. Ensure ALL energy sources (electrical, water, etc.) are locked/tagged-out prior to work. Ensure ALL energy sources (electrical, water, etc.) are re-energized and operational after completion of work. Provide complete documentation on all new equipment. V. PERIOD OF PERFORMANCE: 7 working days. Monday thru Saturday. Starting time 0600-1600 All work will be coordinated with the COR

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Heating, Ventilating, and Air Conditioning (HVAC), Instrumentation and Control for HVAC, HVAC Air Distribution, Cooling Towers, Central HVAC Equipment.