MPC Chiller Package

• Reads 4-20 mA signal from level probe and provide visual readout in digital and color bar graph form on panel
• Adjustable high and low level alarms and cut outs
• Two 4-20mA analog outputs for control of proportional feed valves
• Built in transformer for 24 VAC or 24 VDC power to motorized valve
• Door mounted (7) button keypad – no need to open enclosure to change settings
• Easy-to-read 16 character alphanumeric display with LED dual color bar graph
• Communication via industry standard protocol MODBUS-RTU over RS-485
• Capable of remote monitoring and control of system parameters
• UL/cUL listed NEMA 4 steel enclosure
• Factory mounted and wired requiring only a single power connection in the field

Standard Vessel Design

• ASME, 250 psig, with dual vapor relief assembly
• National Board registration
• Stainless steel nameplate bracket and standoff to prevent corrosion
• Horizontal vessel configuration, internally arranged for split flow, in 24” to 60” outside diameter range and vessel lengths of 96” to 144”
• Internally routed oil pot vent and heat exchanger relief line (if required) piping reduces insulation cost and potential for shipping damage

Semi-Welded Plate Heat Exchanger

• Sondex, Alfa Laval, Kelvion manufactured semi-welded plate heat exchanger
• Heat exchanger supplied by RVS or may be supplied by customer
• Maximum efficiency with low refrigerant charge

Oil Pot

• ASME, 400 psig, with single, replaceable, cartridge style vapor relief assembly set at 150 psig
• Relief discharge piped internal to the main vessel
• Optional dual relief assembly and/or relief to atmosphere

Liquid Level Column

• Level indicating column with valves, level eyes, frost shields, and oil drain
• Cable type, electronic level probe as standard
• High level shutdown float switch for compressor protection

Finish

• Vessel hydrostatically or pneumatically pressure tested
• Factory package piping welded and tested in accordance with ASME B31.5
• Surface prepped to SSPC-SP6 and painted with high quality two component, high solids epoxy coating
• Entire assembly is evacuated to eliminate moisture and shipped with 15 psi dry nitrogen charge

Proportional Liquid Feed Assembly

• Modulating valve minimizes pressure surges and protects pumps from cavitation
• Backup solenoid valve provides positive shutoff in the event of a power failure
• Can configured as a single or dual liquid feed assembly

Additional Features

• 300, 350 and 400 psig vessel design rating
• Corrosion allowance on vessel shell and heads, and/or nozzles
• Post Weld Heat Treatment (PWHT)
• SA333 Grade 6 Low temperature pipe
• 1.5 kw Oil pot heater
• Radiography of pipe welds
• Seismic design calculations
• Conventional on/off solenoid and hand expansion liquid feed assembly (single or dual)