Model 18590-Series
Model: 18590-Series
SELF-PRIMING
MACERATOR PUMP
FEATURES
Pump:
Self-Priming Flexible Impeller with
Stainless Steel Wearplate
Impeller:
Jabsco Nitrile compound
Macerator:
Stainless Steel Cutter reduces particle
size to 1/8" (3mm) maximum
Seal:
Lip Type
Ports:
Inlet - 1-1/2" (38mm)Hose Barb
and 1-1/2" N.P.T. (Male)
Outlet - 1" (19mm) Hose Barb
Motor:
Permanent Magnet Type, Fully
Enclosed, with Stainless Steel Shaft
Complies with USCG Regulation 183.410
and ISO 8846 MARINE for Ignition
Protection
Weight:
5 lb (2,3 kg) Approx.
VARIATIONS AVAILABLE
MODEL NO.
DESCRIPTION
18590-0000
12 Volt
18590-0090
12 Volt EMC
18590-0001
24 Volt
18590-0091
24 Volt EMC
APPLICATION
The JABSCO 18590 series dc macerator pump unit is the
ideal solution for emptying marine holding tanks when not
in a discharge restricted area. The JABSCO macerator is
self-priming to a five foot lift when impeller is wet, four foot
when dry, and may be mounted in any convenient point in
the waste discharge system. The macerator section grinds
waste down to a particle size of 1/8" (3mm) maximum so it
can easily by pumped through a 1" (19mm) ID discharge
hose. The pump section is self-priming, permitting the unit
to be mounted above the tank in a convenient location.
(For optimal efficiency, locate pump as close to holding
tank as possible.)
The macerator has an approximate flow rate of 12 GPM
(45 LPM) and will empty a typical 30 gallon (115 litre) hold-
ing tank in less than 3 minutes.
The 18590 series waste pump will macerate and pump all
waste and tissue normally found in marine and recreational
vehicle waste systems.
Motors meet USCG Electrical Regulation Title
33, Chapter 1, Part 183; Subpart 1 and ISO
8846 MARINE for IGNITION PROTECTION.
OPERATING INSTRUCTIONS
The macerator should be controlled by a momentary
switch (push and hold) positioned close enough to the
pump so it can be heard while operating. When the tank is
empty there will be a change in pump noise (louder, high-
er frequency) at which time the macerator should immedi-
ately be switched off.
The macerator pump unit has been designed to handle
waste, toilet tissue, and facial tissue. It will also handle
solids such as cigarettes,
cigars and chunks of soft
fruits or vegetables less
than 1" size. It will not
pump solid objects like
fruit pits, rags, wet
strength kitchen towels,
tampons or sanitary nap-
kins. The holding tank and
pump should be flushed
with several gallons of
water after each pumpout.
Do NOT run pump dry
longer than 30 seconds or impeller and pump damage
may result. Make sure the battery is ful!y charged. The dc
motor is suitable only for intermittent duty and should not
be run for more than 15 minutes continuously. At maxi-
mum flow of 12 GPM (45 LPM) the macerator can empty
a 180 gallon (680 litre) holding tank in a single operation.
The pumps should be used in accordance with EPA,
USCG Marine Sanitation Regulations, and any regional
or local ordinances.
