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Controller maintains temperature by cycling refrigeration ON/OFF using a set point and differential.
Refrigeration runs continuously to maintain steady supply fluid temp under steady heat load.
Refrigeration runs continuously to maintain steady supply fluid temp under steady heat load.
Unit's ON/OFF status indicated by a green light or the temperature controller illumination.
Lights indicate liquid level sufficiency, 'FULL' status, or 'Liquid Level Low' condition.
Indicates liquid temperature is above or below the alarm set points.
Indicates high refrigerant pressure or building water fault due to insufficient cooling.
Indicates low refrigerant pressure, possibly a leak, or normal startup condition.
Nylon suction strainers prevent pump damage from debris in the tank and require regular checks.
Brass wye strainers in piping have a removable screen that can be cleaned periodically.
Supply line particle filters capture debris and are replaced when pressure rises significantly.
Units include a drain hose connected to the tank bottom, some with a plastic valve.
Periodically inspect tank water clarity and drain/replace water to maintain quality.
Flush system with hydrogen peroxide solution for biological growth or debris accumulation.
Use sodium bicarbonate to raise pH or propylene glycol for biological growth as a last resort.
Use a mixture of distilled water and glycol for outdoor operation to resist freezing.
Periodically change glycol solution, check pH (7-10), and refractometer for percentage.
Clean the wye strainer on the return fluid connection during glycol changes or pressure increases.
Procedure to adjust bypass pressure setting by restricting supply line and turning adjustment screw.
Indicator helps identify low refrigerant or contamination; should be clear and 'DRY'.
Perform checks every 2 weeks for 3 months after installation, then 1-2 times per year.
General
