Attachment 3_Refrigeration System Photos.pdf

This document is Attachment 1 to a Maintenance Contract for the John Day Tree Cooler, consisting of photographic documentation of the refrigeration system and associated components installed at the facility. The attachment contains 15 photographs across 5 pages illustrating the key mechanical and electrical systems requiring maintenance.

The refrigeration system includes two Dunham-Bush chillers (fan components) with associated data plates and control mechanisms. The facility operates a comprehensive temperature and humidity control system managed through three interconnected blue control panels with multiple gauges, switches, and internal electrical components. The glycol circulation system is a critical component, featuring an ethylene glycol tank with insulation, a refill storage drum, solenoid valve controls, temperature gauges, and an extensive plumbing network including mixing valves on two sides. Supporting infrastructure includes a glycol tank plumbing system with pressure gauges and various control valves. Within the tree cooler itself, the system employs multiple fan units positioned at the entrance and exit areas, with a monitoring box located near the cooler's exit. The photographs provide visual reference for the condition, configuration, and arrangement of all major mechanical equipment and controls that would be subject to routine and preventive maintenance activities under the contract.