12 V blackwater pump

Yes, this Jabsco diaphragm pump is designed to run dry, meaning it will not be damaged if it operates without liquid for a short period.

This is a robust diaphragm pump, specifically designed for blackwater management.

No, installing a filter is not required for this Jabsco macerator pump. Its diaphragm design allows it to operate without one.

The DC motor of this pump is suitable for intermittent use and must not be operated continuously for more than 30 minutes.

The Jabsco black water pump is self-priming up to a height of 3 meters (9.5 feet).

This Jabsco blackwater pump, model 50890-1000, operates on 12 V.

The pump ports are designed for hoses with an inner diameter of 38 mm (1-1/2 inches). It is recommended to use a non-collapsing suction hose of the 'debris' type.

No, this Jabsco pump must not be used for gasoline, petroleum products, or any other fluid with a flash point below 37.8°C (100°F). Failure to comply with this requirement may result in explosion or fatal injury.

The pump head can be rotated 360°, allowing flexible installation. To rotate it, follow these steps:

Push the clip and remove the end cover. The internal bolt heads are now exposed. Loosen the four mounting bolts. Remove the bolts and firmly grip the motor. Rotate the pump head to the desired position. Reinstall the four internal bolts and tighten them firmly. Replace the end cover.

The pump fittings are multi-positional to simplify installation. To orient them:

Loosen the clamp with an Allen key. Remove the clamp. Rotate the fitting unit to the desired position. Reinstall the clamp and tighten it firmly until secure.

If the pump is mounted vertically, the motor must be positioned above the pump head for optimal operation.

Rubber grommets are supplied with the pump to absorb vibrations and ease installation.

All suction fittings must be airtight and free of sharp bends or restrictions to ensure proper pump operation. It is recommended to use two stainless steel hose clamps at both ends of the hose.

The through-hull discharge fitting may only be installed below the waterline if the discharge hose includes a vented loop positioned at least 20 cm (8 inches) above the waterline, regardless of the boat's heel or trim angle.

It is recommended to protect the circuit with a fuse or circuit breaker of appropriate rating (10A for the 12V model) on the positive red wire (+), as close as possible to the power source.

For the 12 V model, a 14 AWG (2.5 mm²) cable is recommended for installations up to 4.5 m (15 ft). For longer runs, thicker cables must be used to prevent performance loss or fuse issues.