Dometic 706 User Manual

®

VACUFLUSH

SANITATION SYSTEM

OWNER’S MANUAL

500 Plus Series, 1000 Series, Model 706 Toilets

IMPORTANT NOTICE

VacuFlush

must be installed according to

Dometic’s recommended procedures.

Do not attempt installation without

®

sanitation systems

first contacting a SeaLand

Product certified dealer or

Dometic Corporation.

!

This manual must be read and understood
before adjustment, maintenance, or service is
performed. Modification of this product can
result in property damage.

WARNING

Dometic Corporation • Sanitation Systems

13128 State Rt. 226, P.O. Box 38

Big Prairie, OH 44611-0038 USA

SeaLand Product Hotline [phone]

(8:00 a.m. - 5:00 p.m. ET)

www.DometicSanitation.com

1

TABLE OF CONTENTS

Page Page

Product Features . . . . . . . . . . . . . . . . . . . . . . 2

Marine Sanitation Regulations . . . . . . . . . . . . 3

Important Information Before Operation . . . . . 3

Key System Components . . . . . . . . . . . . . . . . 4

System Start-Up . . . . . . . . . . . . . . . . . . . . . . . 5

Proper Cleaning . . . . . . . . . . . . . . . . . . . . . . . 5

Winterizing . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Clearing Discharge Lines . . . . . . . . . . . . . . . . 6

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Spare Parts . . . . . . . . . . . . . . . . . . . . . . . . . . 6

VacuFlush Maintenance Kit . . . . . . . . . . . . . . 7

Ordering Parts . . . . . . . . . . . . . . . . . . . . . . . . 7

WARNING – HIGH VOLTAGE SYSTEM.
Turn off electrical power before servicing.

Toilet Model Identification . . . . . . . . . . . . . . . . 7

Pedestal and Pedal Cover Installation . . . . . . 7

Deodorants and Special Tissue . . . . . . . . . . . 8

Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Vacuum Tester . . . . . . . . . . . . . . . . . . . . . . . . 9

Service Tip . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Troubleshooting Guide . . . . . . . . . . . . . .10 - 12

Dimensional Specifications . . . . . . . . . . . . . 13

Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . 14

Parts Distributors . . . . . . . . . . . . . . . . . . . . . 15

Manufacturer’s One-Year Limited Warranty . 16

WARNING – PUMP STARTS AUTOMATICALLY.

Turn off electrical power before servicing.

PRODUCT FEATURES

Dometic brings the technology, comfort and efficiency of VacuFlush Sanitation Systems in an
easy-to-use and easy-to-maintain package.

• Freshwater Flush

• Eliminates the unpleasant sulfide odors which plague saltwater systems.

• Eliminates the need to draw flush water through the through-hull, seacock and vented loop.

• Significantly extends life of system components by eliminating saltwater and impurities from
accumulating in the system over time.

• Efficient Design

• Consumes a little over a pint of water per flush and allows boat owners to use a small waste tank.
The VacuFlush system fills a ten-gallon (28.4 liter) tank in the same time that an electric toilet fills a
40-gallon (113.6 liter) tank.

• Uses only 4-6 amps per flush on 12 VDC.

• Delightful Operation

• Simple one-lever flush control. No complex instructions needed.

• Comfortable adult-sized seat.

• Large water surface maintains clean bowl.

• Vitreous china bowl.

• Reliability is Built-In

• USCG Certified Type III Marine Sanitation Device.

• No impellers or macerators – vacuum pump motor can run dry without burning up. No dynamic
seals.

• Vacuum generator design eliminates clogging problems associated with other systems.

• Dispose of Sewage Conveniently and Safely

• Toilet can be used without discharging sewage into sensitive waters.

• Holding tank discharge is at a dockside pump or at sea with optional overboard discharge.

• No portable toilet tanks to haul or dump.

• Backed by the Best in Service and Quality

• The VacuFlush system is from the leader in marine sanitation.

• Worldwide parts availability and technical backup.

Dometic reserves the right to change specifications without notice.

2

MARINE SANITATION REGULATIONS

All boats with fixed toilets in U.S. waters and in the waters of some other countries are required to be equipped
with an operable marine sanitation device (MSD). The VacuFlush system is a holding tank or Type III system
as defined by the U.S. Coast Guard.

Type III systems are designed to permit operation of the toilet without the direct discharge of untreated waste
after every flush. This means onboard toilet facilities can be used when the boat is near swimmers, beaches
or shellfish beds.

Type III systems can be discharged at marina dockside pump-out stations or, if in coastal waters, a minimum
of three miles offshore. Overboard discharge capability must remain secured while within the three-mile

limit. The overboard discharge pump is activated by a keyed switch located in the toilet compartment. This
key should be removed at all times except when discharge pump is operating.

Sewage from any source should not be discharged directly into our waters. If you are interested in learning
more about this issue, please contact Dometic at the phone number or address listed on the back page of this
manual. Request Clean Water Notebook, Volumes 1 and 2.

IMPORTANT INFORMATION BEFORE OPERATION

1. Fill freshwater tank and add deodorant to holding tank through toilet bowl.
(See System Start-Up Section, page 5.)

2. Make sure all guests understand the operation of the VacuFlush system
and the instruction label is in plain sight and easy for guests to read.

If this label is not included in this manual, please contact the
SeaLand Product Customer Service Department immediately.

3. Remember the vacuum pump starts automatically. Shut off the system before servicing and do not leave
the boat with toilet system breaker on.

4. Never use drain openers, alcohol, solvents, etc. in the system.

5. If the system does not function properly, refer to the Troubleshooting Section of this manual and repair as
necessary. If problem persists, contact your local SeaLand dealer or see the Parts Distributor section of
this manual.

1. To add water to the toilet before
using, raise flush lever until desired
water level is reached. Generally, more
water is required only when flushing
solids.

NORMAL OPERATION

2. To flush toilet, press flush lever
sharply down to the floor until contents
clear bowl. A sharp popping noise is
normal when the vacuum seal is broken
and flushing action begins. Be sure to
hold lever down for three (3) seconds.
If flush lever is accidentally released
before waste clears bowl, do not at­tempt to flush toilet again until vacuum
pump stops running. A small amount of
water should remain in the bowl after

flushing.

3. Do not dispose of sanitary napkins
or other non-dissolving items in toilet,
such as facial tissue or paper towels.
These items can cause plugging of the
system. Refer to the Deodorants and
Special Tissue section in this manual
for more information.

3

KEY SYSTEM COMPONENTS

Vacuum Toilet: The VacuFlush toilet operates in a way different from other marine toilets. VacuFlush systems use

a small amount of water (a little more than a pint or .5 liter) per flush in addition to a simple vacuum. The toilet is
connected to a pressurized freshwater system. Fresh water is the key to an odor-free bathroom compartment.
VacuFlush toilets are equipped with an integral vacuum breaker which prevents the possible contamination of the
potable water supply.

Vacuum Tank: The vacuum tank stores vacuum energy. System vacuum level is monitored by a vacuum switch
located on the vacuum tank. When this switch senses a drop in vacuum in the system, it automatically signals the
pump to energize and bring the vacuum to operating level. This process is normally completed in less than one min­ute. In a properly operating system, the stored vacuum will slowly dissipate between flushes, permitting the vacuum
pump to quickly renew the vacuum.

Vacuum Pump: The vacuum pump is an electric, straight-through bellows type. It is manufactured of long-lasting
polypropylene and draws only 4 to 6 amps of current at 12 VDC. This unique pump design is both an efficient air and
liquid pump that handles solids without a problem. It has two duckbill valves on each side of the pump chamber to
prevent backflow of waste and vacuum.

Vacuum Generator: The vacuum generator combines the vacuum tank and vacuum pump in one unit.
It greatly reduces installation time and eliminates the hose run between the tank and pump. Its compact size makes
it especially well-suited to smaller crafts.

Holding Tanks: Holding tanks from Dometic are made of super-strong, 3/8" (9.5mm) thick polyethylene — 50% thicker
than most other holding tanks. Each unit has a solid, one-piece construction with no seams for unmatched durability.
Tanks come in several capacities and shapes. Contact Dometic for details. A deodorant additive is required to keep
the holding tank odor-free. See Deodorants and Special Tissue section for further information.

TankWatch® Level Indicator: The TankWatch unit utilizes micro-float switches which activate an indicator panel. The
inspection cap in the holding tank contains the micro-float switch units. The adjustable probe assemblies are flexible
polybutylene tubing and are designed to flex when tank contents move.

In-Line Vent Filter: Our SaniGardTM vent filter has special odor-removing filter materials to help keep your boat smelling
clean and pleasant. Heavier-than-air malodors accumulate in the holding tank. The SaniGard vent filter has a special
type of activated filter media to remove these odors before they offend. Each cartridge is good for an entire season,
and is easily replaced for a fresh start. Replacement cartridges are available from your local marine dealer.

Dockside Discharge Deck Fitting: The holding tank is connected to a deck discharge fitting. This fitting, in turn,
can be connected to a dockside pump which may have a rubber, cone-shaped nozzle or a cam lock fitting. Refer
to Accessories section for further information on the NozAll™ fitting which makes using a dockside pump easy and
convenient.

Discharge Pump: Our T-series SaniPumpTM discharge pump can run dry without harm and draws just 6 amps at 12
VDC. The discharge pump has a flow rate of just over 5.25 gallons per minute (11.4 liters per minute). Emptying an
onboard tank usually takes four to six minutes. The T-pump is connected to a through-hull fitting. Check the section
on Marine Sanitation Regulations for information on areas where discharge is allowed.

4

SYSTEM START-UP

1. Turn on inlet water supply.

2. Turn on electrical power to system.

3. Flush water into system by depressing flush lever until water starts flowing to the vacuum pump, approxi­mately 15 seconds. The vacuum pump will run for approximately 60 to 90 seconds until system reaches
operating vacuum level and then will shut off.

PROPER CLEANING

The SeaLand toilet should be cleaned regularly for maximum sanitation and
operational efficiency. You can clean it just as you would a household toilet.

Do not use caustic chemicals, such as drain-opening types, as they
will damage the seals.

BOWL CLEANING: For stubborn stains, use SeaLand® Bowl and Seal

Cleaner (Fig. A). It’s manufactured especially for use with SeaLand toilets.
In certain locations where water is hard, a build-up of lime may dull the toilet
bowl finish. Restore the shine with this SeaLand cleaner. If you cannot find
it in your area, contact Dometic for your nearest dealer. If the cleaner is not
available, you can also use Bar Keepers Friend® cleanser. It is not necessary
to vigorously scrub with either product. Please follow label instructions.

SEAL CLEANING: After an extended time, mineral deposits from hard
water can build up under the edge of the rubber bowl seal, resulting in a
slow leakdown of water from the bowl. To prevent this mineral build-up,
periodically clean under the bowl seal with SeaLand Bowl and Seal Cleaner
(Fig. B).

1. Shut off water supply.

2. Apply cleaner onto the seal cleaning tool (supplied with new toilet),
open the flush ball by pressing on flush lever, and scrub under the seal.
Make sure to push bristles between bottom of seal and top of flush ball
surface to scrub all parts of seal that come into contact with flush ball.

3. Close ball and wait 2-3 minutes.

4. Open flush ball. Use brush and water to rinse away cleanser and loosened deposits.

Fig. A

Fig. B

WINTERIZING

At the end of each season, the SeaLand toilet should be winterized for
storage, by either draining or using potable water-safe antifreeze in the
system.

To drain:

1. Thoroughly flush system with fresh water.

2. Empty holding tank.

3. Shut off water supply to toilet(s), and remove inlet waterline (Fig. C).

Do not remove brass cap on bottom of valve.

4. Press flush lever until all water is drained from toilet(s).

To use antifreeze:

1. Drain potable water tank.

2. Add freshwater antifreeze to potable water tank.

3. Flush potable water antifreeze and water mixture through toilet(s) and into the waste holding tank. Each
installation is different, so amounts may vary. User discretion is required to assure adequate protection.

4. Empty holding tank.

NOTE: Use nontoxic antifreeze designated for potable water systems. (See vehicle owner’s manual.)
CAUTION: Never use automotive-type antifreeze in freshwater systems.

5

Fig. C