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The macerating system is a residential pumping system for toilet and bathroom fixtures. The macerator pump unit connects to
the outlet of a rear discharge toilet. The system is comprised of three major components: the macerator unit, the toilet bowl
and the toilet tank.
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The macerator unit also consists of three major parts: the container which houses the operating mechanism; a pressure
chamber which automatically activates and deactivates; the induction motor which drives the cutter blade and the impeller.
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SANITARY INLETS: The macerating pump unit is equipped with two additional 1-1/2" inlets, one on either side of the case.
These inlets, which incorporate an internal check valve, are used to connect the drainpipe of other sanitary fixtures to the
macerating pump unit. Note: in case none of the inlets are used by other fixtures, you will need to block off the inlet with the
plugs provided.
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BATHTUBS AND SHOWER STALLS: Any regular bathtub or shower kit can be used. When installing these fixtures, one
should build an 8" high platform, on which the fixture is placed. This gives enough space for a p-trap and slope toward the
wastewater inlets. When installing a shower, manufacturers sometimes offer a pre-fabricated raised shower base. NOTE: The
actual distance between the p-trap of the additional fixture and macerating pump determines the necessary clearance to install
the p-trap and elevation required to ensure a minimum pitch of ¼" per foot.
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NORMAL OPERATING CYCLE: As the flush is operated or as the bath, shower, or lavatory discharges, the water and waste
matter enter the unit and the water level begins to rise, triggering the micro-switch in the pressure chamber. For safety the
macerating unit should never be activated with the lid removed.
3. Installation
NOTE: All installations should be done in accordance with federal, state and local codes. It is recommended that a certified or
qualified installer perform these operations.
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PREPARING THE MACERATING PUMP UNIT FOR INSTALLATION
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Push the flapper check / elbow assembly into the discharge grommet on the tank lid. Orient the elbow as you wish
and secure with a provided hose clamp.
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Install the adapter grommet to the discharge elbow with a hose clamp. This adapter allows for either ¾" or 1"
schedule 40 PVC discharge pipe to be connected to the system.
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Install a rubber 1-1/2" grommet to the vent cylinder on the tank lid. Secure with a hose clamp. This grommet allows
for 1-1/2" schedule 40 PVC vent pipe to be connected to the system.
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If other fixtures are to be installed, install the appropriate 1-1/2" rubber grommets with hose clamps to the side(s) of
the tank. Remove the ¼ turn plug before installation of the grommet. Included with the system is one 1-1/2" x 2"
adapter for installations with 2" schedule 40 piping.
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SYSTEM ASSEMBLY
Schematics: Typical Installation Diagrams. Refer to these diagrams when needed during the assembly process.
Installations may vary per local plumbing and electrical codes. Also, discharge and vent pipe routing can vary per
installation.
Typical 2x4 construction wall
Side View
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Vent piping,
typically
behind wall
To fixture:
¼" per foot
slope
minimum
Front View
Discharge piping,
typically behind
wall
To fixture:
¼" per foot
slope
minimum
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