3
DO NOT FLUSH FOREIGN OBJECTS
CAUTION!
Flush only water, bodily wastes and rapid-dissolving tissue
paper.
Do not flush
wet wipes, sanitary napkins, condoms, diapers,
razor blades, paper cups, cotton swabs, food, hair or liquids such as
oils or solvents. Clogging or damage to the toilet system may occur.
Note
Make sure all guests understand toilet operation before use.
Use RAPID-DISSOLVING toilet tissue – avoid clogs
To avoid potential clogging problems with some household tissues,
Dometic recommends the use of quick-dissolving tissue, such as
Dometic rapid-dissolving 1-ply or 2-ply toilet tissue.
IMPORTANT! NOT EVERY MARINE-GRADE TOILET
PAPER DISSOLVES RAPIDLY
To determine any tissue’s ability to dissolve, immerse one square of
tissue in a jar of water and shake 5-10 times. The tissue sample
should break up so that it is no longer in one piece.
Troubleshooting
Problem
Possible Cause
Service Instruction
1. Flush function works,
but water in bowl
empties slowly or not
at all.
a. Discharge piping is pinched or
kinked.
b. Discharge piping is too high.
(Remember, all upward vertical
loops and should not exceed a
total of 4 feet (1.2 m) in height.)
c. The macerator pump or
discharge piping is blocked.
a. Check discharge piping.
b. Reroute discharge piping.
c. Close seacocks and clear
blockage.
2. Macerator pump
makes unusually loud
noise or continually
trips breaker.
a. Foreign material in pump
chamber.
a. Close seacocks and clear
foreign material.
3. Flush cycle is not
activated after
pushing on flush
switch.
a. Holding tank is full and signal
from tank has shut down
electrical power to toilet.
b. Electrical power to toilet is shut
off or disrupted.
c. Flush switch is malfunctioning.
d. Electric motor is malfunctioning.
a. Empty holding tank.
b. Check wiring and circuit
breakers (or fuses).
c. Replace flush switch.
d. Replace electric motor.
4. Insufficient or
no water enters
the bowl.
a. Water supply line is pinched or
kinked.
b. Screen in water valve is blocked.
c. Intake water filters are blocked
(in raw water system).
d. Water valve is malfunctioning
(fresh water flush toilet).
e. Water impeller is malfunctioning
(raw water flush toilet).
a. Check water supply line.
b. Clear blockage at water
valve.
c. Clear water filters.
d. Replace water valve.
e. Replace raw water
impeller.
Summary of Contents for MasterFlush Series
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