Using and Cleaning Your Dometic Macerating Toilet on Your Sportsman Boat

1. Why This Kind Of Toilet & How It Works
A macerating toilet uses an electric-flush system to macerate (chop up) waste and pump it to either a holding tank or overboard (where allowed). For example, Dometic’s MasterFlush range is designed for marine applications with features such as a 10-blade stainless steel macerator, compact footprint, and an ORBIT base that allows installation at different angles.

On your Sportsman boat, this provides:
     • Residential-style bowl comfort with marine durability
     • Flexibility to place the toilet away from the holding tank or discharge point
     • Reduced chance of clogs when used correctly since waste is broken up and pumped efficiently

2. Safe Use & Key Warnings
Before using or cleaning the unit, keep these critical safety and operational warnings in mind:
     • Turn off electrical power and close seacocks or valves before maintenance
     • Never overfill the holding tank — this can cause ruptures or discharge into the bilge
     • Only flush bodily waste and rapid-dissolving toilet paper (no wipes, diapers, napkins, hair, oils, solvents, etc.)

3. How To Operate Your Macerating Toilet
Here’s a quick workflow for everyday use, whether your system uses fresh water or raw sea water.

     • Ensure the water supply to the toilet is on.
     • For initial system start-up: Press the Flush switch for at least 10 seconds. Toss several sheets of rapid-dissolving         toilet tissue into the bowl and flush again until the bowl clears.
     • For normal flushing:
           – Use the Add Water switch (if equipped) to raise water level before flushing solids
           – Press and hold the Flush switch until the bowl clears (usually 10–20 seconds)
     • Make sure all guests know the basics and what not to flush.

4. Cleaning and maintenance
Routine care keeps the system operating reliably.

     • Monthly
           – Inspect toilet base, hoses, and plumbing for chafe or leaks
           – Check electrical connections
           – Cycle seacocks and valves to keep them moving freely
           – Check vented loops and filters

     • Yearly
           – Inspect the water-valve filter (if applicable)
           – Check discharge piping for kinks or restrictions
           – Verify hose runs meet manufacturer limits (ex: some models allow up to 98 ft horizontally or 9.8 ft vertically)

     • Cleaning The Bowl
           – Use non-abrasive marine-safe toilet cleaners
           – Avoid harsh chemicals, bleach (unless marine-safe), petroleum cleaners, and alcohols
           – Flush with fresh water regularly to reduce salt buildup

     • During Extended Non-Use
        If your Sportsman boat will sit for weeks or longer:

     •Flush several times in Normal mode
     •Add about 4 oz of biodegradable laundry detergent (no bleach)
     •If using sea water, shut off the sea-water pump and flush fresh water into the bowl
     •Flush at least five times
     •Turn off the water supply
     •Flush briefly without water three times to clear the pump and hoses
     •Turn off power to the toilet
     •If freezing temps are expected, add non-toxic potable-water-safe antifreeze per instructions (never use automotive         antifreeze)

5. Practical Tips For Life Aboard A Sportsman Boat
     • Educate guests before heading out — proper use prevents mid-trip issues
     • Keep extra rapid-dissolving marine toilet tissue onboard. Test by dunking a square in water and shaking it 5–10         times; it should break apart quickly

With a quality system like a Dometic macerating toilet aboard your Sportsman Boat, you get home-style comfort with marine-ready durability — as long as it’s used and maintained correctly.