The Multi-function Filter Pump-HJ-2 is a versatile aquatic pump designed for filtering, water circulation, and oxygenation in freshwater environments. Below is a summarized breakdown of its features, warnings, cautions, and performance guidelines:

Key Features:

• Durable Construction:
  • Shell made of high-quality ABS plastic.
  • Ceramic axle core and casings (non-corrosive).
• Efficient Filtration:
  • Built-in biochemical filter cotton to enhance nitrifying bacteria growth.
• Multi-functional Use:
  • Suitable for filtering, pumping water, and oxygenating aquariums/ponds.

Warnings (Safety Precautions):

• Electrical Safety:
  • Equipped with a grounding plug—do not remove the grounding pin.
  • Only connect to a properly grounded outlet.
  • Use only the voltage specified on the pump.
• Usage Restrictions:
  • Do not pump flammable or heated liquids.
  • Max water temperature: 30°C (86°F).

Cautions (Operational Guidelines):

• Before Handling: Always unplug the pump.
• Water Submersion Required:
  • Never run the pump dry—it must be fully submerged for cooling.
  • Operate in freshwater only (not for saltwater or chemical solutions).
• Proper Handling:
  • Do not lift the pump by the power cord.

Performance Tips:

• Prevent Clogging:
  • A dirty intake screen reduces efficiency—keep it clean.
  • If placed on a dirty surface, elevate slightly to minimize debris intake.
• Flow Control:
  • Adjust the flow control lever or restrict the outlet for reduced flow.
• Startup Procedure:
  • Submerge the pump first, then plug it in to avoid damage.

Summary:

The HJ-2 is a reliable, corrosion-resistant pump ideal for freshwater aquariums or small ponds. Proper grounding, submersion, and maintenance are critical for safe and efficient operation. Avoid overheating, dry running, or misuse with incompatible liquids to ensure longevity.

Would you like further clarification on any specifications or installation steps?