Dometic MasterFlush Series, MF 7100 Series, MF 7200 Series Quick Start Manual

1

Quick-Start Guide

MasterFlush® Series

Toilets with ORBIT Base

MF 7200 Series

MF 7100 Series

Macerator Toilet

Quick-start guide ..............2

EN

WC dilacérateur

Guide de démarrage rapide ......5

FR

Inodoro triturador

Guía de inicio rápida . . . . . . . . . . .8

ES

2

Normal flushing

Press “Flush” switch (2) down and hold until waste drains from
toilet bowl (about 10 – 20 seconds). This switch activates a
macerator pump that siphons water and waste from the bowl,
macerates, and propels the efuent to the discharge line.

To use less water for liquid-only ushes, press “Flush” switch for shorter period of
time.

If toilet bowl does not completely flush and lls up with sea water during ush,
partially close inlet valve until bowl clears and completely discharges efuent. Then,
with inlet and discharge valves completely open, ush toilet for a few seconds to
clear toilet and discharge system.

Toilet system start-up

1. Open sea water inlet and toilet discharge outlet seacocks.

2. Press “Flush” switch (2) and hold until water enters the
toilet bowl.

3. Toss several sheets of toilet paper into bowl and repeat
cycle. The bowl should completely clear.

Toilet system start-up

1. Turn on fresh water supply to toilet.

2. Press “Flush” switch (1) and hold until water enters the
toilet bowl.

3. Toss several sheets of toilet paper into bowl and repeat
cycle. The bowl should completely clear.

Normal flushing

Press “Flush” switch (1) down and hold until waste drains from
toilet bowl (about 10 – 20 seconds). This switch activates a
macerator pump that siphons water and waste from the bowl,
macerates, and propels the efuent to the discharge line/
holding tank.

To use less water for liquid-only ushes, press “Flush” switch for shorter period
of time.

MasterFlush Operation

Freshwater Flush (7120, 7220)

2

1

Sea Water Flush (7160, 7260)

Caution! Hazard of Flooding

If toilet is connected to ANY through-the-hull ttings, ALWAYS close sea­cocks when toilet is not in use (even if boat is unattended for a brief period).
All passengers MUST be instructed on how to close valves when the toilet
is not in use. Failure to do so can result in ooding which can cause loss of
property and life.

EN

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 ush
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 ush switch.
d. Replace electric motor.

4. Insufcient or
no water enters
the bowl.

a. Water supply line is pinched or

kinked.

b. Screen in water valve is blocked.

c. Intake water lters are blocked

(in raw water system).

d. Water valve is malfunctioning

(fresh water ush toilet).

e. Water impeller is malfunctioning

(raw water ush toilet).

a. Check water supply line.

b. Clear blockage at water

valve.

c. Clear water lters.

d. Replace water valve.

e. Replace raw water

impeller.

4

There is a strong, worldwide network to assist in servicing and maintaining your
sanitation system. For the Authorized Service Center near you, please call from 8:00 a.m.
to 5:00 p.m. (ET) Monday through Friday.

You may also contact or have your local dealer contact the Parts Distributor nearest you
for quick response to your replacement parts needs. They carry a complete inventory for
the Dometic Sanitation product line.

Telephone: [phone] U.S.A. and Canada
330-439-5550 International

Fax: [phone] U.S.A. and Canada
330-439-5567 International

Web sites: http://www.Dometic.com
http://www.DometicSanitation.com

Customer service

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 and add 4 oz. (118 ml) of liquid biodegradable laundry detergent (should
NOT contain bleach or environmentally harmful substances).
Note: If using raw water for ushing, shut off power to raw water pump and add
fresh water directly into the bowl during the ush cycle.

2. Flush toilet at least ve times.

3. Turn off water supply to toilet.

4. Flush the toilet without water very briey to evacuate all water. (This procedure will
minimize any remaining water in the macerator pump.)

Caution

During water evacuation process, do not operate raw water pump very
long without water. Pump impeller may become damaged.

5. Turn off power to the toilet.

6. After extended periods of non-use, toilet and pump may dry. For easier re-start of
toilet system, add one quart of water to bowl and let it stand for a few minutes before
use.