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Dometic 8700 Series MasterFlush Toilet
7
Maintenance and winterizing
7.1
Cleaning the toilet
To maintain the toilet's original, lustrous appearance, use Dometic Toilet Bowl Cleaner or other
non-abrasive bathroom and toilet bowl cleaners . Please follow label directions .
Caution
To avoid damaging internal seals, do not clean toilet with abrasive cleaners, caustic
chemicals, or lubricants and cleaners that contain alcohols or petroleum distillates .
7.2
Routine maintenance
MONTHLY
1 . Inspect toilet, plumbing, and plumbing connections, wires, and wire connections .
2 . Open and close all plumbing valves, including seacocks .
3 . Check in-line water filters and vented loops for blockage
YEARLY
Check water valve filter . Also check water valve filter if water flow into toilet becomes insufficient .
7.3
During extended periods of non-use
The macerator toilet and sanitation hoses should be protected if toilet will not be needed for an
extended period of time (more than two weeks, especially in hot weather) .
1 . Flush toilet in "Normal" mode and add 4 oz . (118 ml) of liquid biodegradable laundry detergent
(should NOT contain bleach or environmentally harmful substances) . Note: If using sea water for
flushing, shut off power to sea water pump and add fresh water by pouring directly into the bowl
during the flush cycle .
2 . Flush toilet at least five times .
3 . Turn off water supply to toilet .
4 . Flush the toilet without water . Repeat three times . (This procedure will minimize any remaining
water in the macerator pump .)
5 . Turn off power to the toilet .
If system will be subjected to freezing temperatures, please follow above procedure, and then
winterize system as described below .
7.4
Winterizing
At the end of each season, the Dometic macerator toilet should be winterized for storage by using
potable water-safe antifreeze (if boat or vehicle will be exposed to freezing temperatures) .
Note
Use nontoxic antifreeze designated for potable water systems . (See boat or vehicle
owner's manual .)
Caution
Never use automotive-type antifreeze in freshwater systems .
PRESSURIZED FRESH WATER SYSTEM
1 . Drain potable water tank and empty holding tank .
2 . Add freshwater antifreeze to potable water tank .
3 . Flush potable water antifreeze and water mixture through toilet(s) and into entire system,
including the waste holding tank, diverter valve connections, discharge pumps, etc . Turn off
power to toilet .
Each installation is different, so amounts may vary . User discretion is required to assure
adequate protection .
Maintenance, Winterizing
9
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