JABSCO 50870 12 Series, Manual

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Operation
●
Pump may be run dry for short periods of time.
● Pump may be run against a closed discharge.
Maintenance
● Check all electrical connections periodically.
●
Check seal area for signs of leaking
Wiring Instructions
● Make all electrical connections in dry locations.
● In humid/wet environments, connections must be sealed to
prevent corrosion.
● Protect the circuit with a correctly fitted fuse or circuit
breaker in the red/orange positive (+ve) lead, as close as
possible to the power source.
● Connect the black negative (-ve) lead to the negative
battery terminal.
●
Inadequate voltage at the pump (not more than 3% below
rated voltage) may result in blowing fuses, poor pump
performance, or failure for the pump to start. See table for
wire sizing.
WARNING: If the fuse fails repeatedly,
do not fit a heavier fuse or bridge the
terminals. Fire and death may occur.
Overload
Protected
Distribution
Panel
ORANGE
WIRE
BLACK
WIRE
FUSE
OUTLET
PORT
INLET
PORT
Wiring Diagram
BATTERY
Max Max Wiring size*
Model No Voltage Amp Fuse Max.
Draw Size AWG mm
2
Length
50870-XX12 12v 21A 25A
10 6.0 4.5m (15ft)
6 15.0 9.0m (30ft)
50870-XX24 24v 10.5A 13A
12 4.0 4.5m (15ft)
10 6.0 9.0m (30ft)
*wire length from battery to pump and back to battery, maximum voltage drop 3%
Dis-Assembly
(See diagrams on inside back cover)
1. Disconnect pump from power supply. Remove 3 end cover
bolts, end cover & o-ring.
2. Carefully holding impeller, remove impeller nut.
3. Remove impeller.
4. Loosen 2 head fixing bolts, rotate pump head and pull
to remove.
5. Remove seals from pump body.
Re-Assembly
(See diagrams on inside back cover)
6. Wet the flat seal part and cup rubber and push into head.
7. Fit head to motor locking into position and tighten head
fixing bolts.
8. Lubricate inside of mechanical seal and push onto shaft.
9. Fit and carefully hold impeller and tighten nyloc nut. Once
tight, carefully hold impeller and undo nut 1 revolution to
set impeller clearance.
10.Fit o-ring to end cover and fit onto head.
11.Tighten 3 end cover bolts.
Electrical Wiring Information
WARNING: Motor may get hot after
prolonged use, do not touch. Burns
may occur.