Why is periodic inspection important in solar thermal systems?
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Routine inspections help detect wear, corrosion, and performance issues early.
What does a drop in system pressure typically indicate?
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Pressure loss may signal a leak or air in the loop, affecting performance.
What maintenance should be done annually?
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Annual maintenance includes checking the antifreeze, sensors, pump function, and insulation.
Why might a pump fail to circulate fluid?
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Blockages, air locks, or pump motor failure can stop circulation.
What is the purpose of flushing the system?
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Flushing removes scale and debris, maintaining system efficiency.
How can an air lock in the system be resolved?
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Bleeding the air from the system restores proper fluid flow.
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What could cloudy fluid in the system indicate?
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Cloudy fluid can indicate contamination or chemical breakdown, requiring replacement.
Why should collector glazing be cleaned regularly?
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Dirty glazing reduces solar absorption, decreasing efficiency.
What is a common symptom of a malfunctioning controller?
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Controllers regulate system temperature and circulation; faults may show incorrect readings or no pump action.