Dometic 4300 Series - Maintenance, Winterizing, and Service; Cleaning the Toilet; Routine Maintenance; Winterizing Procedures

6
Maintenance/winterizing/service Dometic 4300/4400 Series Toilets
6.1 Cleaning the toilet
Tomaintainthetoilet’soriginal,lustrousappearance,useSeaLand
®
Toilet Bowl Cleaner or other
non-abrasivebathroomandtoiletbowlcleaners.Pleasefollowlabeldirections.
6.2 Routine maintenance
MONTHLY
1. Inspect toilet, plumbing and plumbing connections, wires and wire connections.
2. Check in-line water lters, if applicable.
YEARLY
Checkwatervalvelter.Alsocheckwatervalvelterifwaterowintotoiletbecomesinsufcient.
6 Maintenance/winterizing/service
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.
Caution
Shut off the toilet system before servicing and do not leave the vehicle for extended
periods of time with toilet system circuit breaker on.
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. Turn off electric power to toilet.
 Eachinstallationisdifferent,sorequiredamountsofantifreezemayvary.Userdiscretionis
requiredtoassureadequateprotection.
6.4 Recommended spare parts
Thefollowingsparepartsshouldbeavailableatalltimes.Refertopartslistforitemnumbertoorder.
To order spare parts, refer to Customer Service section.
Description Quantity
Flush ball seal kit 1
Flush ball 1
Electric water valve 1
Vacuumbreakerassembly 1
6.3 Winterizing
Attheendofeachseason,theDometictoiletshouldbewinterizedforstoragebyusing
potable water-safe antifreeze (if vehicle will be exposed to freezing temperatures).
Caution
Never use automotive-type antifreeze (ethylene glycol) in freshwater systems.
Note
Usenontoxicantifreeze(propyleneglycol)designatedforpotablewatersystems.
(See vehicle owner’s manual.)