Persistent dripping or spraying from vacuum relief valve at the top of the Heliocol array.

Safety first: Turn off the pump and relieve pressure before removing or servicing the vacuum relief valve. Use caution on the roof.

• Inspect installation angle: Confirm the vacuum relief valve is installed vertically at the highest point of the array as specified by Heliocol.
• Flush debris: With the pump off, remove the valve and rinse it thoroughly with clean water to remove sand or debris from the seat area.
• Check for wear: Inspect the internal seal and spring. If the seal is cracked, hardened, or deformed, replace the valve.
• Verify system pressure: Check filter pressure and ensure it is within normal operating range. Correct any high-pressure issues that may be forcing the valve to leak.
• Reinstall and test: Reinstall the valve with appropriate thread sealant, restore flow, and confirm that the dripping has stopped.