USDA Marshfield walk-in freezer equipment replacement - statement of work.docx

Statement of Work Project: Walk-in Freezer Equipment Replacement

GENERAL INFORMATION

1.0 Scope of Work:

Replacement of condensing units, evaporators, valves, and control panels in 2 walk-in freezers at the USDA-ARS EIDMRU Lab in Marshfield, WI.

2.0 Background:

The EIDMRU Lab building has 2 walk-in freezers for storing research samples at -20°C. The refrigeration equipment in the freezers has required regular repairs the past 2 years and is in need of replacement. The project will include demo of the existing refrigeration equipment and installation of new scroll-type condensing units, new evaporator coils using electric defrost, new solenoid and check valves, and new control panels to operate the freezers. The project includes furnishing and installing new refrigerant and oil in the system, furnishing and installation of new copper refrigeration piping with brazed joints, installing condensate drain lines from the evaporator to a floor drain, insulation of all refrigeration lines, installation and connection of all electrical for new equipment and defrost coils. The project also includes tagging and labeling all piping and equipment, start up of freezers, leak check and adjustment of the system as necessary. A minimum 90 day warranty on materials, equipment, and workmanship must be included.

CONTRACTOR REQUIREMENTS

3.0 Technical Requirements/Tasks:

The project will include the following:

-Demo existing refrigeration equipment and disposal of old refrigerant and equipment -Furnish and install new refrigeration equipment:

-Replacement Freezer Equipment for Two Walk-in Freezers -Condensing units: A2L Scroll type 4.5hp 208-230V/3PH/60hz Low temp -Evaporators: Low profiler electric defrost, 3 fan, 208-230V/1PH -Carel electronic expansion valve factory installed -Solenoid valve, 3/8 -Check valve, A2L, 5/8 -Replacement Control Panels -Example: IntelliGen Field Mount iFM Kit with 25ft sensor lead wires

-Furnish and install ACR copper refrigeration piping with brazed joints.

-Furnish and install refrigerant including POE oil as required. Refrigerant used must meet federal requirements for Safe Alternatives.

-Set Refrigeration Condensing Units -Hang evaporator coils in each walk-in freezer -Furnish and install refrigeration lines from each circuit back to the refrigeration condenser locations

– Furnish and install 1” elastomeric foam insulation on suction lines, 1/2” elastomeric foam insulation on liquid lines. External piping will have PVC jacketing.

-Furnish and install type L copper secondary condensate drain lines from the evaporator coil drain pan to a floor drain provided -Install and connect electrical for new equipment and electric defrost coils -Install new refrigeration controls -Install tags and labels on all refrigeration piping and equipment -Start up freezer, check for leaks, and make adjustments as necessary to ensure optimal operation -Provide training to owners when freezers are operational -Warranty – Minimum 90 day warranty on materials, equipment, and workmanship -All labor, insurance, small tools, rental equipment, and truck & travel charges needed to complete project -Freight/shipping needed to complete project

-Quote must include a description of all materials and services to be provided as part of the package, including materials, labor, transport, and travel/deliveries. If items deemed necessary in the above technical specifications are not included in the quote, the quote may not be reviewed.

In order for the orderly change over of the 2 freezers being repaired, the vendor must complete the work on 1 freezer at a time to allow the freezer contents to be moved into the operational freezer. When the 1st freezer work is completed and functional, the freezer contents will then be moved into the completed freezer to allow work on the 2nd freezer.

All work at the site must be conducted during normal business hours of 7am and 5pm Monday through Friday unless scheduled in advance with facility staff.

Contractors must notify the USDA technical POCs, Annotated in contract award, at least 1 week before anticipated start of the package implementation to ensure the plans work with the staff’s schedule, and coordinate work schedules around other building projects.

7.0 Contractor’s Key Personnel:

Key personnel for the contractor include the technical representative to determine the correct materials, and the staff in charge of implementation.