Model: 18590-0010
SELF-PRIMING MACERATOR
PUMP UNITS
FEATURES
Pump:
Self-Priming Flexible Impeller
with Stainless Steel Wearplate
Impeller:
Jabsco Nitrile Compound
Macerator:
Cast Bronze Cutter reduces
particle size to 1/8" maximum
Seal:
Lip Type
Ports:
Inlet – 3" Slip-on Hose
Outlet – 1" ID Hose Barb
Motor:
12 Vdc Permanent Magnet Type,
Fully Enclosed, with Stainless
Steel Shaft
Weight:
7 lb (3.2 kg) Approx.
This pump should be used in accordance with EPA
Sanitation Regulations.
APPLICATION
The Jabsco 18590-series DC macerator pump unit is the
ideal solution for emptying holding tanks on recreational
vehicles and avoiding dump stations. The macerator sec-
tion grinds waste down to a particle size of 1/8" maxi-
mum so it can easily be pumped through a 1" ID dis-
charge 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.)
Recommendation: Purchase a commercial 1" garden
hose and cut off a 1 to 2 foot length of the outlet end.
Attach this short hose to the macerator 1" outlet. Now
attach the swivel female connector to the short hose
male connector. You can now easily remove and store
the 1" service hose.
Empties most recirculating toilets in less than 2
minutes; empties a typical 30 gallon holding tank in less
than 3 minutes.
The 18590-series waste pump will macerate and pump
all waste and tissue normally found in recreational
vehicle waste systems. IT WILL NOT HANDLE HARD
SOLID OBJECTS, SANITARY NAPKINS OR RAGS.
Model: 18590-0010
OPERATING INSTRUCTIONS
The Jabsco macerator pump unit has been designed to
handle waste, toilet tissue, and facial tissue. It will also
handle solids such as filter tip cigarettes, cigars and
chunks of soft fruits or vegetables less than 1" size. It will
not pump solid objects like peach pits, rags, or sanitary
napkins. The holding tank and pump should be flushed
with several gallons of water after each pumpout.
Do NOT run pump dry. Make sure the battery is fully
charged. The DC motor is suitable only for intermittent
duty; do not run for more than 15 minutes continuously.
After long periods of nonuse, the macerator pump may
not turn freely. Pour a cup of water down pump
discharge line to help free the impeller. The motor shaft
has a screw driver slot machined at the rear of the motor.
This may be used to free a stuck impeller after months
of non use.
