Detergent or rinse aid lines frequently lose prime and require manual priming.

Safety first: Disconnect power and wear PPE when handling chemicals.

• Inspect all fittings: Tighten compression nuts and barbed fittings on detergent and rinse aid lines to prevent air leaks.
• Replace pickup tubes: If tubes are brittle or cracked, replace with chemical-resistant tubing of the correct size.
• Maintain chemical levels: Keep containers at least one-third full to avoid drawing air.
• Check pump check valves: Disassemble pump heads (if serviceable) and inspect internal check valves. Replace worn components or the entire pump if necessary.