| H2Q catalogue 12 SUBMERSIBLE PUMPS SUBMERSIBLE PRESSURE PUMPS H2Q COM SUBMERSIBLE RAINWATER PUMPS WITH PUMP CONTROL The H2Q COM and COM-X submersible pumps are 4" automatic multistage pressure pumps designed for domestic water supply, rainwater harvesting, irrigation and pressure boosting. They integrate advanced electronics directly inside the pump, eliminating the need for external controllers. APPLICATIONS • Domestic water supply and automatic pressure boosting • Rainwater collection and utilization systems • Irrigation, also from tanks and cisterns • Installation in 4" boreholes and underground reservoirs • Plug‑and‑play solutions for replacing traditional pressure‑boosting units • Pressure boosting in small private water networks KEY FEATURES • Integrated Electronic Control The pump starts automatically at 2.8 bar and stops when the water flow ceases, ensuring fully autonomous operation. • Advanced Dry Run Protection System The pump instantly stops when water is unavailable to avoid damage. It then performs automatic restart cycles at fixed intervals: • After 30 seconds → 3 restart attempts • After 1 hour → 3 attempts • After 5 hours → 3 attempts • After 24 hours → 3 attempts If water does not return, the pump remains safely shut down until conditions are normal again. • Leakage Detection If the pump detects more than 7 starts within 200 seconds, it stops automatically, signaling possible leakage or malfunction. • Integrated Non Return Valve Prevents backflow and ensures stable pressure in the system. • Automatic Air Bleeding Function Removes residual air from the hydraulic system, improving start up behavior and avoiding false dry run alarms. • High Quality, Corrosion Resistant Materials Stainless steel housing and robust internal components guarantee long term performance. • Self Cooling Motor The jacket cooled motor ensures cooling regardless of immersion depth. • COM X Version with side connection More practical for installations inside tanks or cisterns; also available in a version with a floating suction kit, ideal for drawing water from the cleanest surface layer MOTOR • Insulation Class B • Protection IP68 • Single-phase 230V/50Hz OPERATION CONDITION • Max. liquid temperature: 40 °C • Installation: vertical only (not suitable for horizontal installation) • Must be installed in combination with a water hammer arrestor Side suction (COM-X) Bottom suction (COM) COM-X with KIT Components Construction Pump casing: AISI 304 SS Motor casing: AISI 304 SS Impeller: Plastic POM Motor Shaft: AISI 304 SS Mechanical seal: Ceramic / Graphite
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