can be done using a hacksaw. Wrap port threads with a couple of
wraps of Teflon tape and screw the pump assembly into the pipe
fitting. Tighten hand tight, do not over tighten.
Please Note: An air leak anywhere in the suction side of the
plumbing system can cause extended dry running. All suction con-
nections must be air tight and free of sharp bends or restrictions. If
a deck fitting is installed for dockside pump-out and connected to
the suction hose of the macerator by means of a tee fitting (with-
out a Y-Valve), it too must be air tight to ensure proper priming.
Use minimum 1" (25mm) ID hose for discharge and connect to
thru-hull fitting located approximately 4-6 inches above waterline.
NOTICE: The discharge thru-hull may be positioned below the
waterline only if the discharge hose has a vented loop fitting
installed at least 8" above the waterline at all angles of heel or
trim. Consult with a qualified marine plumber.
VENTED LOOP
MACERATOR
Voltage
Amp Draw
12 Vdc
24 Vdc
*Length of run is total length of the circuit from the power source to product and back to ground. Wire sizes listed are SAE guage and metric millimeters.
WIRING TABLE
Fuse/Breaker
20
25 Amp
10
15 Amp
Wiring Diagram
Battery
INSTALLATION FOR WASTE APPLICATIONS
Although the Jabsco Macerator pump can be installed at any con-
venient point in the waste discharge system, it is recommended
that it be installed as close to the holding tank as possible, this will
increase the performance of the pump. It is also recommended
that the switch used to control the macerator be mounted close
enough to the pump that it can be heard whilst in operation, this
will allow the operator to hear a change in pump noise when the
unit has finished pumping the tank dry. The pump then should be
turned off; this will further increase the life of the pump.
INSTALLATION FOR FISH BOX AND
LIVEWELL APPLICATIONS
As with the waste application the Jabsco Macerator Pump can be
installed at any convenient point between the fishbox/livewell
receptacle and the discharge port. It is recommended that it be
installed as close to the tank as possible, this will increase the
performance of the pump. It is also recommended that the switch
used to control the macerator be mounted close enough to the
pump that it can be heard whilst in operation, this will allow
the operator to hear a change in pump noise when the unit has
finished pumping the tank dry. The pump then should be turned
off; this will further increase the life of the pump.
ELECTRICAL
Wire the unit in an independent circuit. Consult the wiring table
for fuse and wire size. Consult the wiring diagram for connections.
Wire size AWG (mm²) per foot (meter) of length*
0 – 13 ft
13 – 20 ft
(0 – 4 m)
(4 – 6 m)
14 AWG
12 AWG
(2.5 mm²)
(4 mm²)
16 AWG
16 AWG
(2.5 mm²)
(2.5 mm²)
Fuse
Master Switch
Macerator
Pump
3
20 – 40 ft
40 – 60 ft
(6 – 12 m)
(12 – 18 m)
10 AWG
8 AWG
(4 mm²)
(6 mm²)
14 AWG
12 AWG
(4 mm²)
(4 mm²)