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Some of the solar panels are warm to the touch while others are cool
Diagnosis: There is not equal flow through all of the panels. Warm panels indicate low water flow.
Pump Answers:
1. Check that the filter is clean. Backwash to reduce pressure.
2. The pump may not be providing enough water to the solar system. Check water flow using a
flow meter. Increase pump power to maintain recommended flow.
3. If there is a suction type cleaner in the pool, disconnect it. If this eliminates the problem, use it
only when the solar system is off.
Install Answers:
1. If the system is a single row array and there is adequate flow, use a Ball Valve on the return
line to throttle the flow back to increase backpressure on the system. This will even out the
flow through the panels. If the array contains more panels than the maximum recommended on
Page 11 of this manual, change the array to a double row or single row split feed as shown in
on Page 12.
2. If the system is a double row or a single row split feed array and there is adequate flow, install
a Ball Valve on the return side of the set of panels that are the coolest to throttle back the flow
through these panels and force more water through the warmer panels. If any section of the
array contains more panels than the maximum recommended on Page 11 of this manual, make
changes as needed to correct this.
Water coming from the system is not as warm as it should be
Diagnosis #1: The water is flowing too fast through the panels
Install Answer:
Test water flow rate. Water flow through a single panel should be less than 2500 liters per
hour. Adjust the Two-Way Valve to by-pass some of the water.
Diagnosis #2: Seasonal normal operation
Answer
:
In the cooler months of the year, or on cool or partly cloudy days, the temperature rise through
the panels may only be 2° or 3° C. Use the back of your hand to feel the water temperature
difference at the pool return inlet.
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