Xylem JABSCO 50890 User manual

50890 Waste Pump

INSTRUCTION MANUAL

Waste Pump

Robust Single Diaphragm Design

Features

• Flexible installation

• No ﬁlter required

• Compact and simple design

• Self-priming to 3m (9.5ft)

• 12V and 24V variants

• Dry running capability

• Connections for 38mm (1-1/2") ports

• Up to 19 lpm (5 US gpm) ﬂow

Speciﬁcations

• Suction lift: 3 meters (9.5ft)

• Relevant standards:

• ISO 8846 MARINE and USCG Regulations for Ignition Protection

• ISO 8849 MARINE Bilge Pump Standard

• Built to ISO 15083 Speciﬁcation

• Meets BSEN 50081 (Electro Magnetic Compatibility)

Performance Curve

Installation

• The Jabsco Waste Pump is self priming up to 3m (9.5ft).

• Uses multi-positional ports for easy mounting of the pump.

• If mounted vertically the motor should be above the pump head.

• Use rubber grommets provided to absorb vibration.

• Plumbing Connections: Use 38mm (1-1/2") ID, non-collapsible

waste type suction hose.

• Connect the hose to inlet and outlet of pump using two stainless

steel hose clamps at both ends.

• All suction connections must be airtight and free of sharp bends

or restrictions.

Operation

The DC motor is suitable for intermittent duty and should not be run for

more than 30 minutes continuously.

Flow – lpm (us gpm)

Differential Pressure – bar (psi)

WARNING:

Do not use any Jabsco pump for petrol, petroleum products or

any products with a ﬂash point below 37°C (98°F); explosion or death may occur.

WARNING:The discharge thru-hull may be positioned below the waterline

only if the discharge hose has a vented loop at least 20cm (8") above the waterline

at all angles of heel or trim.

Maintenance

Check all electrical connections periodically, particularly in salt water

areas. Corrosion can cause loss of performance or non-operation in

extreme cases. The motor should be protected with a corrosion inhibiting

spray and any rust should be removed and the motor repainted.

Wiring Instructions

• Make all electrical connections in dry locations; connections

in humid environments should be sealed to prevent corrosion.

• Protect the circuit with a rated fuse or circuit breaker in the red

positive (+) lead as close as possible to the power source.

• Connect the black motor wire to the negative (—) battery terminal.

• Inadequate voltage at the motor terminals when the pump is running

(not less than 10% below rated voltage at full load) due to partially

discharged batteries or insufﬁcient cable size may result in blowing

fuses, failure to start or poor pump performance.

Model No. Voltage Max

Current

Max

Fuse

Size

Wiring Size*

AWG mm2Max Length

50890-1000 12V 8A 10A 14 2.5 4.5m (15ft.)

14 2.5 9.0m (30ft.)

50890-1100 24V 2.5A 5A 14 2.5 4.5m (15ft.)

14 2.5 9.0m (30ft.)

*for longer installations, ﬁt thicker cables

Ensure sterilization of wet end before disassembly.

Rotation of Pump Head (See diagrams on next page)

1. Push down on clip and remove end cover

2. Internal bolt heads now exposed

3. Undo all four mounting bolts

4. Remove bolts and grasp motor unit ﬁrmly

5. Rotate pump head to desired position

6. Example of pumps rotational capabilities

7. Replace all 4 internal bolts and secure tightly

8. Replace end cover

Rotation of Ports (See diagrams on next page)

1. Undo clamp using allen key

2. Remove clamp

3. Rotate port unit to desired location

4. Example of pumps rotational capabilities

5. Replace clamp and tighten until ﬁrmly secure

WARNING: Always disconnect pump from power supply.

Battery

Inlet

Port

Overload

Protected

Distribution

Panel

Fuse

Outlet Port

Black Wire

Orange Wire

WARNING:

If the fuse fails repeatedly do not ﬁt a heavier fuse or bridge the

fuse terminals with silver paper or metal wire. Failure to observe this instruction

may result in a ﬁre hazard due to overheating of cables.

Rotation of Pump Head

Rotation of Ports

Exploded View

Part Numbers

Model Voltage Fuse Sizes

50890-1000 12V 7A

50890-1100 24V 5A

Key Description Quantity in Kit

1Bracket

2Bush

3Clamp Bottom

4Clamp Top

5Con Rod

6Con Rod Plate

7Cover* 1

8Diaphragm* 1

9Hex Head Screw

10 Hex Head Screw* 4

11 Motor Assembly

12 Screw Recessed Pan Head* 1

13 Socket Head Screw

14 Washer* 1

15 Waste Pump Chamber

16 Waste Pump Joker Valve* 2

17 Waste Pump Port* 2

18 Washer

* Included in Service Kit

Service Kit

SK890 Service Kit - Waste Pump

Dimensional Drawing

Discover Jabsco at www.xylem.com/jabsco

Warranty: All products of the company are sold and all services of the company

are offered subject to the company’s warranty and terms and conditions of sale,

copies of which will be furnished upon request.

Jabsco is a trademark of Xylem Inc. or one of its subsidiaries.

43000-0822 Rev. A 9/2019

mm (inches)

Xylem Inc. — USA

100 Cummings Center, Ste. 535-N

Beverly, MA 01915

Tel: +1-978-281-0440

Fax: +1-978-283-2619

Xylem Inc. — UK

Bingley Road, Hoddesdon

Hertfordshire EN11 OBU

Tel: +44 (0) 1992 450145

Fax: +44 (0) 1992 467132

Xylem Inc. — JAPAN

3-21-10, Shin - Yokohama Kohoku-ku,

Yokohama 222

Tel: +81 (0) 45 475 8906

Fax: +81 (0) 45 475 8908

Xylem Inc. — GERMANY

Oststrasse 28

22844 Norderstedt

Tel: +49-40-53 53 73-0

Fax: +49-40-53 53 73-11

Xylem Inc. — ITALY

Via Tommaseo, 6, 20059

Vimercate, Milano

Tel: +39 039 685 2323

Fax: +39 039 666 307

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