Q. Water flow from VUPPA-I got weaker and it stopped functioning.
A. Debris accumulation inside VUPPA-I is suspected. Perform the maintenance according to the manual. The water flow substantially decreases if the water inlet and outlet of the submersible pump are clogged with debris or small shells. Be sure to disassemble the submersible pump to remove the debris buildup during the maintenance. If the symptom does not improve even after the maintenance, bring your VUPPA-I to the dealer you purchase from.