Chiller repair

Added: Mar 20, 2017 8:54 am SCOPE OF WORK

REPAIR 1250 TON CHILLER IN CHILLER PLANT





Furnish all labor, tools, materials, equipment and supervision necessary to repair chiller in chiller plant as listed below. The work will be on a York International, water cooled chiller. Model # YKQSQRK2DBG5, SERIAL # SAWM460440. Work is to be performed at Chiller Plant 2 in Building 3. The contractor is responsible for removing or installing any chill water pipe or condenser water pipe without interrupting service. Work includes installation of new Base Mounted VSD with Harmonic filter, 60HZ, 1048HP, Connect control and electrical to the chiller and VSD.



Scope of Work:



Isolate the power and Lock out tag out all electrical feeds to chiller.

Set up all necessary rigging to accomplish repair.

Send gear set and send Impeller out for clean and balance.

Clean compressor surfaces and all parts.

Once parts have returned reassemble compressor using new bearings, seals and parts. Bearing Kit, O ring Kit, Shaft Seal and Balance piston seal.

Check all applicable tolerances per original equipment manufacturer (OEM) specifications.

Set existing proximity probe.

Install compressor assembly.

Reconnect all applicable piping.

Replace oil filer and drier.

Pressurize and leak check chiller.

Evacuate to 500 Microns.

Install a new oil charge and the removed refrigerant weighed to know the amount removed. If additional refrigerant is needed it will be quoted to customer.

Install D-ring, motor and coupling. Check alignment.

Reconnect the electrical to the motor.

Power the unit and check the settings and calibration of the Proximity probe and Guide vanes.

Install Base Mounted VSD with Harmonic filter, 60HZ, 1048HP, Connect control and electrical to the chiller and VSD. Install the cooling lines for the VSD to the condenser. Power the unit and program the panel and start the chiller and check the operation.

Start the unit and check the operation.

Notify Customer of any issues and completion. Remove equipment and debris.

Return in 2 weeks and replace and inspect oil filter.



Installation Time:



All work shall be completed within 90 calendar days after Notice to Proceed is received by the Contractor.

New work will be performed during the hours of 7:00 AM and 4:30 PM, Monday through Friday, exclusive of Federal Holidays. Some work outside of normal hours of operations may be necessary and must be coordinated with the Project COR.



SPECIAL CONSIDERATIONS BY THE CONTRACTOR:



All disposal costs and fees for debris removal will be the contractor s responsibility.

The contractor will be responsible for cleanliness of the construction area at all times.

All new work performed shall comply with NFPA 99 requirements.

Supply certifications and system testing as required by NFPA on all new medical gas work.



SAFETY CONSIDERATIONS: Contractor s workmen shall provide and utilize all safety requirements in accordance with OSHA regulations during all phases of work. Contractor shall provide and utilize scaffolding, A-frame and ladders in accordance with all OSHA regulations. Any penetrations through the floor, ceiling or wall shall be filled with approved fire caulk.



NOTE: Contractor shall submit samples of all new proposed materials for approval with manufacturer s literature. No materials shall be procured or installed prior to sample approval.



Site shall be kept clean and free from debris at all times and contractor shall remove debris daily from medical center property. Contractor will not be allowed use of government materials and/or labor for this project.



All work is to be performed in strict compliance with these specifications.