Type Designation; Design Features - Johnson Pump SPX L450 DUO Manuel D'instructions

Submersible bilge pump with electronic switch
Submersible bilge pump for pumping bilge water in marine environment. To be instal-
led in the keelson.
Security
• The pump may not be used for other liquid than water/bilge water.
• Always install the pump according to wiring diagram, page 16.
• Always use the fuse required, see Design features below.
• The wire connections must be sealed with a marine sealant, eg vaseline, silicone
or grease.
• Insulation or cable sheathings must be placed above the highest bilge water
level.
• Do not run dry.
Operation
See illustration page 15.
A. When the bilge water rises the magnet float (1), it floats up and the air in the float
house (2) is forced out through the vent hole (3).
B. The magnet float starts the pump (4) when bilge water reaches 50 mm. The valve
(5) closes and the magnet float stays in the start position due to vacuum inside
the float house.
C. When the bilge water has sunk to level 20 mm, air is let in through the air ope-
ning (6) in the float house. The magnet float falls down and cuts off the power.

Type designation

Pumptype EU L450 Duo - 12V L550 Duo - 12V L650 Duo - 12V
Pumptype US 500 GPH
Part No EU 32-1450D-01
Part No US 05503-00

Design features

Hose size
Capacity, straight
(13.6 V)
Capacity, 1 m head
(13.6 V)
Voltage
Amperage
Fuse size
Height
Max dimension
Weight
Body
Shaft
Shaft seal
Wire size
Original instructions
750 GPH 1000 GPH
32-1550D-01 32-1650D-01
05703-00 05903-00
L450 Duo L550 Duo
3/4" 3/4"
49 l/min/ 56 l/min/
778 GPH 884 GPH
38 l/min/ 45 l/min/
601 GPH 713 GPH
12 V DC 12 V DC
2,5 A 3 A
3 A 5 A
112 mm 112 mm
75x100 mm 75x100 mm
0.40 kg 0.40 kg
Thermoplastic Thermoplastic
Stainless steel Stainless steel Stainless steel Stainless steel
Lip seal Lip seal
0.75 mm 0.75 mm
2
L750 Duo - 12V
-
32-1750D-01
-
L650 Duo
3/4"
61 l/min/
972 GPH
53 l/min/
844 GPH
12 V DC
3.2 A
5 A
112 mm
75x100 mm
0.40 kg
Thermoplastic
Lip seal
0.75 mm
2 2
> English
L750 Duo
1.1/8"
73 l/min/
1,150 GPH
60 l/min/
952 GPH
12 V DC
3 A
5 A
112 mm
75x100 mm
0.45 kg
Thermoplastic
Lip seal
0.75 mm
2
5