DOMETIC 7100 MasterFlush Macerator Toilet Instruction Manual

DOMETIC 7100 MasterFlush Macerator Toilet

Product Information

Specifications

• Model: MF7100, MF7200
• Type: Macerator Toilet
• Language Options: EN, SK, DE, ES, PT, IT, NL, DA, SV, NO, FI, PL, CS, HU, HR, TR, SI, RO, BG, ET, EL, LT, LV
• Form No.: 4445101811 600347001 2024-02-12

Product Usage Instructions

Explanation of symbols and safety instructions
This manual provides safety information and instructions to help you prevent accidents and injuries.

Recognize safety information
The safety alert symbol is used to indicate potential physical injury hazards. Always follow safety messages marked with this symbol to avoid injury or death.

Understand signal words

• WARNING: Indicates a hazardous situation that could result in death or serious injury.
• NOTICE: Addresses practices not related to physical injury.
• I: Provides additional information not related to physical injury.

Supplemental directives
Before operating or servicing the appliance, please observe the following directives to reduce the risk of accidents and injuries.

Intended Use
The Macerator Toilet is designed for use as a sanitary solution in various language options for user convenience.

General Information
The Macerator Toilet provides efficient waste disposal and is equipped with safety features to prevent accidents.

Operation
To operate the Macerator Toilet:

1. Ensure the toilet is connected to a power source.
2. Follow the specific instructions for flushing and waste disposal based on the model (MF7100 or MF7200).
3. Regularly clean and maintain the toilet for optimal performance.

Maintenance and Winterizing
Regular maintenance and winterizing procedures are essential for the longevity of the Macerator Toilet. Follow the manufacturer’s guidelines for proper care.

Troubleshooting
If you encounter any issues with the Macerator Toilet, refer to the troubleshooting section in the manual for solutions or contact customer support for assistance.

Disposal
When disposing of the Macerator Toilet, follow local regulations for proper waste disposal methods to protect the environment.

FAQ

• Q: How often should I clean the Macerator Toilet?
  A: It is recommended to clean the Macerator Toilet at least once a month to maintain proper hygiene and functionality.

• Q: Can I use any type of toilet paper with the Macerator Toilet?
  A: It is advisable to use toilet paper specifically designed for macerator toilets to prevent clogs and ensure smooth operation.

• Q: What should I do if the Macerator Toilet stops working?
  A: Check the power source, inspect for any blockages, and refer to the troubleshooting section in the manual for guidance. If issues persist, contact customer support for assistance.

Copyright
© 2024 Dometic Group. The visual appearance of the contents of this manual is protected by copyright and design law. The underlying technical design and the products contained herein may be protected by design, patent or be patent pending. The trademarks mentioned in this manual belong to Dometic Sweden AB. All rights are reserved.

Service center & dealer locations
Visit: www.dometic.com
Please read these instructions carefully and follow all instructions, guidelines, and warnings included in this product manual to ensure that you install, use, and maintain the product properly at all times. These instructions MUST stay with this product. By using the product, you hereby confirm that you have read all instructions, guidelines, and warnings carefully and that you understand and agree to abide by the terms and conditions as set forth herein. You agree to use this product only for the intended purpose and application and by the instructions, guidelines, and warnings as set forth in this product manual as well as by all applicable laws and regulations. A failure to read and follow the instructions and warnings set forth herein may result in an injury to yourself and others, damage to your product, or damage to other property in the vicinity. This product manual, including the instructions, guidelines, warnings, and related documentation, may be subject to changes and updates. For up-to-date product information, please visit www.dometic.com.

Explanation of symbols and safety instructions

This manual has safety information and instructions to help you eliminate or reduce the risk of accidents and injuries.

Recognize safety information

• This is the safety alert symbol.
  It is used to alert you to potential physical injury hazards. Obey all safety messages that follow this symbol to avoid possible injury or death.

Understand signal words
A signal word will identify safety messages and property damage messages and also will indicate the degree or level of hazard seriousness.

• WARNING
  Indicates a hazardous situation that, if not avoided, could result in death or serious injury.

• NOTICE: Used to address practices not related to physical injury.
  Indicates additional information that is not related to physical injury.

• Supplemental directives
  To reduce the risk of accidents and injuries, please observe the following directives before proceeding to operate or service this appliance:

  • Read and follow all safety information and instructions.
  • Read and understand these instructions before operating or servicing this product.
  • Dometic recommends that a qualified marine technician or electrician install or service this product. Equipment damage, injury to personnel, or death could result from improper installation. The installation must comply with all applicable local or national codes.

General safety messages

WARNING: Flooding hazard. Failure to obey the following warnings could result in death or serious injury.

• If the toilet is connected to any through-the-hull fittings, always close the seacocks when the toilet is not in use (even if the boat is unattended for a brief period). All passengers must be instructed on how to close the valves when the toilet is not in use.
• If the toilet uses fresh water for flushing and is connected directly or indirectly to a shoreside municipal water system at any time, shoreside water connections must be disconnected if the boat is unattended (even if the boat is unattended for a brief period).
• Before beginning any work on this product, be sure that all electrical power to the unit has been turned off and that the seacocks are in the closed or off position.

NOTICE: Overfilling the holding tank can cause serious damage to the sanitation system, such as rupturing the holding tank and releasing tank contents into the bilge. To prevent this possibility, Dometic recommends using a full tank shut-down relay. The full signal from the holding tank can be generated by an optional Dometic DTM01C tank monitor or DTM04 four-level tank monitor system.
Follow all local regulations for waste tank discharge.

Intended use

The Macerator toilet (hereinafter referred to as toilet or product) provides an electric-flush toilet that macerates waste and pumps it either to a holding tank or other effluent storage/disposal system, or overboard. Operated by a remote flush switch, the toilet allows the user to add water to the bowl (before or after flushing) and to flush the toilet by pushing a button. This toilet is designed for use in marine applications and is only suitable for the intended purpose and application by these instructions.
This manual provides information that is necessary for the proper operation of the toilet. Poor installation and/or improper operation or maintenance will result in unsatisfactory performance and possible failure. The manufacturer accepts no liability for any injury or damage to the product resulting from:

• Incorrect assembly or connection, including excess voltage
• Incorrect maintenance or use of spare parts other than the original spare parts provided by the manufacturer
• Alterations to the product without express permission from the manufacturer
• Use for purposes other than those described in this manual

Dometic reserves the right to change product appearance and product specifications.

General information

Components
Toilet components (figure 1)

1. Rim flush check valve (freshwater toilet) or adapter (raw water model)
2. Water supply hose
3. Macerator pump (under plastic cover)
4. Electric water valve
5. Product ID label location
6. Stainless steel compression band
7. Discharge fitting

Installed toilet (figure 2)

1. Macerator toilet
2. DFS-2F Flush switch (standard – freshwater flush toilet)
3. DFS-1F Flush switch (standard – raw water flush toilet)

The DFST flush switch is optional and not shown. Refer to the complete parts list (packed separately) for additional information.

Toilet tissue paper
To avoid potential clogging problems with some household toilet tissues, Dometic recommends using quick-dissolving tissue, such as Dometic rapid dissolving 1-ply or 2-ply toilet tissue.
Not every marine-grade toilet tissue paper dissolves rapidly.
To determine any toilet tissue’s ability to dissolve, immerse one square of the 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.

Benefits
Convenient electronic flush. Add water (freshwater version only) or flush with the touch of a button.
Versatile installation. Several features enhance the installation possibilities of the 7100 and 7200 series macerator toilets:

• Adjustable toilet base. The toilet base can be positioned so that the macerator pump housing extends in any direction from the center of the toilet.
• Floor plan flexibility. The macerator pump allows the toilet to be located up to 40 ft (12.2 m) away or up to 4 ft (1.2 m) below the holding tank or other discharge line destination.
• Self-priming raw water pump (raw water flush version only). The integral pump for raw flush water is self-priming with a maximum lift of 4 ft (1.2 m).

Automatic full tank shut-down (optional installation – tank level monitor and shut-down relay required. Available separately). When the shutdown relay is connected to a holding tank level indication system, the electrical power to the toilet shuts off when the holding tank is full. This safety feature prevents overfilling the holding tank, which may cause damage to the boat.

Specifications

Materials

powder-coated aluminum (DFST)

Minimum System Requirements

flush toilet
0.75 in. ID – raw water flush toilet
Flow rate| 2.0 gpm/7.6 lpm minimum – fresh water flush
Discharge| Inside diameter| 1.5 in (38 mm) or 1.0 in (25 mm)
---|---|---
Horizontal run2| 40 ft (12.2 m) maximum
Vertical run2| 4 ft (1.2 m) maximum
1 Consult ABYC guidelines for additional information.

2 Horizontal and vertical run distances are not cumulative. Check for adequate discharge flow if installation nears one of these limits.

Operation

NOTICE: Failure to obey the following may cause clogging or damage to the toilet, toilet components, or toilet system.

• Do not operate the toilet without the water supply turned on.
• Do not flush foreign objects. Flush only water, bodily wastes, and rapid-dissolving toilet tissue.
• Do not flush wet wipes, sanitary napkins, condoms, diapers, paper cups, cotton swabs, food, hair, or liquids such as oils or solvents.

Make sure all guests understand toilet operation before use.

Freshwater flush (DFS-2F switch)
DFS-2F switch (figure 3)

1. Add Water switch
2. Flush switch

Toilet system start-up

1. Turn on the freshwater supply to the toilet.
2. Press the Flush switch and hold for at least 10 seconds.
3. Toss several sheets of toilet paper into the bowl and repeat the cycle. The bowl should be completely clear.

Normal flushing

• Adding water to the toilet bowl
  Press the Add Water switch until the desired water level is achieved. More water is usually added only when flushing solids. Do not press the Add Water switch too long or overflow may occur.

• Flushing toilet
  Press the Flush switch down and hold until the waste drains from the toilet bowl (about 10-20 seconds). To use less water for liquid-only flushes, press the Flush switch for a shorter period. The switch activates a macerator pump that siphons water and waste from the bowl, macerates, and propels the effluent to the discharge line/holding tank.

Freshwater flush (DFST switch)
DFST switch (figure 4)

1. Add Water switch
2. Flush switch
3. Dry Bowl switch

Toilet system start-up

1. Turn on the freshwater supply to the toilet.
2. Press the Flush switch and hold for at least 10 seconds.
3. Toss several sheets of toilet paper into the bowl and repeat the cycle. The bowl should be completely clear.

Normal toilet operation
NOTICE: Do not flush waste with the Dry Bowl switch. To maintain proper cleanliness and operation of the toilet and macerator pump, water should be used with every flush.
Adding water to the toilet bowl Press the Add Water switch until the desired water level is achieved.
More water is usually added only when flushing solids.

Do not press the Add Water switch too long or overflow may occur.

• Flushing toilet
  Press the Flush switch down and hold until the waste drains from the toilet bowl (about 10-20 seconds). To use less water for liquid-only flushes, press the Flush switch for a shorter period. The switch activates a macerator pump that siphons water and waste from the bowl, macerates, and propels the effluent to the discharge line/holding tank.

• Dry bowl operation
  During periods of rough travel, water in the toilet bowl can splash out and into the bathroom area. To avoid this situation, use the dry bowl function. Press the Dry Bowl switch to drain the water completely from the toilet bowl. Water is not added to the bowl during or after pressing the Dry Bowl switch.

Toilet operation when
connected to full tank shut-down relay and tank monitor system When a macerator toilet system uses a full tank shut-down relay, electrical power to the toilet is shut off when the holding tank level reaches full. To restore the electrical power to the toilet for flushing, the holding tank contents must be emptied or discharged until the full tank indicator is activated.

Sea water flush
DFS-1F switch (figure 5)

1. Flush switch

Toilet system start-up (DFS-1F switch)

1. Open the seawater inlet and the toilet discharge outlet seacocks.
2. Press the Flush switch and hold for at least 10 seconds.
3. Toss several sheets of toilet paper into the bowl and repeat the cycle. The bowl should be completely clear.

Normal flushing
Press the Flush switch down and hold until the waste drains from the toilet bowl (about 10-20 seconds).

• To use less water for liquid-only flushes, press the Flush switch for a shorter period.
• If the toilet bowl does not completely flush and fills up with seawater during the flush, partially close the inlet valve until the bowl clears and completely discharges the effluent. Then, with the inlet and discharge valves completely open, flush the toilet for a few seconds to clear the toilet and discharge system.

The switch activates a macerator pump that siphons water and waste from the bowl, macerates, and propels the effluent to the discharge line.

Maintenance and winterizing

Cleaning the toilet
NOTICE : To avoid damaging the internal seals, do not clean the toilet with abrasive cleaners, caustic chemicals, lubricants, or cleaners that contain alcohol or petroleum distillates.
To maintain the toilet’s original lustrous appearance, use Dometic Toilet Bowl Cleaner or other non-abrasive bathroom and toilet bowl cleaners. Follow the label directions.

Routine maintenance

1. Monthly
   • Inspect the toilet, plumbing, and plumbing connections, wires, and wire connections.
   • Open and close all plumbing valves, including the seacocks.
   • Check the in-line water filters and vented loops for blockage.
2. Yearly
   Check the water valve filter for blockage or damage.

During extended periods of non-use
NOTICE: During the water evacuation process, do not operate the seawater pump very long without water. The pump impeller may become damaged.
The macerator toilet and sanitation hoses should be protected if the toilet will not be needed for an extended period (more than two weeks, especially in hot weather).

1. Flush the toilet and add 4 oz (118 ml) of liquid biodegradable laundry detergent (should not contain bleach or environmentally harmful substances).
   • If using seawater for flushing, shut off the power to the seawater pump and add fresh water directly into the bowl during the flush cycle.
2. Flush the toilet at least five times.
3. Turn off the water supply to the toilet.
4. Flush the toilet without water very briefly to evacuate all water. This procedure will minimize any remaining water in the macerator pump.
5. Turn of the power to the toilet.
6. After extended periods of non-use, the toilet and pump may be dry. For an easier restart of the toilet system, add 1 qt (0.9 L) of water to the bowl and let it stand for a few minutes before use.

Winterizing
NOTICE: Never use automotive-type antifreeze in freshwater systems. Use nontoxic antifreeze designated for potable water systems. Refer to your boat or vehicle owner’s manual.
At the end of each season, the macerator toilet should be winterized for storage by using potable water-safe antifreeze if the boat or vehicle is exposed to freezing temperatures.

1. Pressurized freshwater system
   Each installation is different, so the amounts of antifreeze needed may vary. User discretion is required to ensure adequate protection.

2. Drain the potable water tank and empty the holding tank.

3. Add potable water antifreeze to the potable water tank.

4. Flush the potable water antifreeze and water mixture through the toilet(s) and into the entire system, including the waste holding tank, diverter valve connections, discharge pumps, etc.

5. Turn off the power to the toilet.

6. Sea water system
   The following materials are required:

   • One hose that fits the seawater pump, about 3 ft (1m) long
   • One container
   1. Close the intake and discharge seacocks.
   2. Turn off the power to the toilet.
   3. Disconnect and drain the intake hose and in-line filters.
   4. Connect the hose to the seawater pump intake.
   5. Place the hose connected to the pump intake into a bucket with antifreeze in it.
   6. Turn on the power to the toilet.
   7. Flush until the antifreeze is drained from the toilet.
   8. Disconnect the power to the toilet.
   9. Reconnect all intake and drain hoses.

Troubleshooting

The flush function works, but the water in the bowl empties slowly or not at all.| The discharge piping is pinched or kinked.| Check the discharge piping.
The discharge piping is too high. All upward vertical loops should not exceed a total of 4 ft (1.2 m) in height.| Reroute the discharge piping.
The macerator pump or discharge piping is blocked.| Close the seacocks and clear any blockage.
The macerator pump makes unusually loud noises or continually trips the circuit breaker.| There is foreign material in the pump chamber.| Close the seacocks and clear any foreign material.
The flush cycle is not activated after pushing the Flush switch.| The holding tank is full and the signal from the tank has shut down the electrical power to the toilet.| Empty the holding tank.
The electrical power to the toilet is shut off or disrupted.| Check the wiring and circuit breakers (or fuses).
The Flush switch is malfunctioning.| Replace the Flush switch.
The electric motor is malfunctioning.| Replace the electric motor.
Insufficient or no water enters the bowl.| The water supply line is pinched or kinked.| Check the water supply line.
The screen in the water valve is blocked.| Clear the blockage at the water valve.
The intake water filters are blocked (in the raw water system).| Clear the water filters.
The water valve is malfunctioning.| Replace the water valve.
The water impeller is malfunctioning (raw water flush toilet).| Replace the raw water impeller.

Disposal
Place the packaging material in the appropriate recycling waste bins, whenever possible. Consult a local recycling center or specialist dealer for details about how to dispose of the product by all applicable national and local regulations.

Warranty information

Refer to the sections below for information about warranty and warranty support in the US, Canada, and all other regions.

United States and Canada
LIMITED WARRANTY AVAILABLE AT DOMETIC.COM/EN-US/TERMS-AND-CONDITIONS- CONSUMER/WARRANTY.
IF YOU HAVE QUESTIONS, OR TO OBTAIN A COPY OF THE LIMITED WARRANTY FREE OF CHARGE, CONTACT:
DOMETIC CORPORATION
SANITATION CUSTOMER SUPPORT CENTER 13128 STATE ROUTE 226
BIG PRAIRIE, OHIO, USA 44611
1-800-321-9886

Asia-Pacific (APAC) countries
If the product does not work as it should, please contact your retailer or the manufacturer’s branch in your country (see the back of this instruction manual for the web addresses to locate your region or retailer). The warranty applicable to your product is ONE year.
For repair and warranty processing, please include the following documents when you send in the device:

• A copy of the receipt with the purchasing date
• A reason for the claim or description of the fault

Australia only
Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and for compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure.

1. New Zealand only
   This warranty policy is subject to the conditions and guarantees that are mandatory as implied by the Consumer Guarantees Act 1993(NZ).

2. All other regions
   The statutory warranty period applies. If the product is defective, please contact the manufacturer’s branch in your region or your retailer (see the back of this instruction manual for the web addresses to locate your region or retailer).
   For repair and warranty processing, please include the following documents when you send in the device:

   • A copy of the receipt with the purchasing date
   • A reason for the claim or description of the fault

Note that self-repair or nonprofessional repair can have safety consequences and might void the warranty.

dometic.com

YOUR LOCAL DEALER
dometic.com/dealer

YOUR LOCAL SUPPORT
dometic.com/contact

YOUR LOCAL SALES OFFICE
dometic.com/sales-offices

A complete list of Dometic companies, which comprise the Dometic Group, can be found in the public filings of: DOMETIC GROUP AB Hemvärnsgatan 15 SE-17154 Solna Sweden

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