Thetford EasyFit User manual

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Features
• Contemporary design and compact size.
• Glazed vitreous china bowl for homelike appearance, maximum
flush performance, easy cleaning and minimal maintenance.
Available in white or bone color, and short or standard profiles.
• Enamel-coated wood seat and cover provide firm support.
• Programmable Wall Switch allows installer/user to increase or
decrease level setting for water refill. Includes both black and
bone Bezel.
• Wall Switch Keypad includes Power-On, Tank Level and Lock-
Out indicators.
• Lock-Out electronics prevent flushing if holding tank is full.
• User-selectable water refill level.
• Quiet flush operation.
• Standard nozzle flush system and vertical outfall insures com-
plete bowl coverage and low water use.
• Easy to winterize using common, non-toxic propylene glycol.
Congratulations…
Owner’s Manual
• Optimized for minimal water use:
– 1.75 liters/flush for liquid waste
– 2.25 liters/flush for solid waste
• Fully-integrated, non-corroding pump/ motor system macerates
waste and resists clogging. Available in 12- or 24-volt configu-
rations. Capable of discharging waste 6 feet (2 m) above toilet.
Warranty
Tecma EasyFit has a Limited 2-Year Warranty. This Warranty does
not apply to applications where toilet can be exposed to shock lev-
els in excess of 10 g’s and has been installed without specific base
isolation dampening. See the Tecma EasyFit Installation Manual for
installation guidelines.
Questions?
If you have any questions or need assistance, please contact Tecma
Service at 1-800-543-1219.
THE WARNINGS BELOW MUST BE READ AND UNDER-
STOOD BEFORE INSTALLATION, OPERATION, OR
SERVICE OF UNIT BEGINS. ANY MODIFICATION OF
THIS UNIT COULD RESULT IN PROPERTY DAMAGE,
INJURY OR DEATH.
THETFORD CORPORATION ACCEPTS NO RESPONSIBILI-
TY OR LIABILITY FOR DAMAGE TO EQUIPMENT, INJU-
RY OR DEATH THAT MAY RESULT FROM PRODUCT’S
IMPROPER INSTALLATION, SERVICE OR OPERATION.
THETFORD CORPORATION RECOMMENDS THAT ONLY
A TRAINED AND QUALIFIED MARINE TECHNICIAN OR
ELECTRICIAN INSTALL OR SERVICE THIS PRODUCT.
Danger of Electric Shock, Fire and Flooding
Failure to heed these warnings can result in loss of
property, injury and death.
• Always be sure unit’s ELECTRICAL POWER is TURNED
OFF and that SEACOCKS are CLOSED or in the “OFF” posi-
tion before beginning work.
WARNING!
• If Toilet is connected to any through-hull fittings, ALWAYS CLOSE
or TURN OFF ALL SEACOCKS when BOAT IS UNATTENDED
– even if only for a minimal time.
• For units using fresh water that are (at any time) connected
to shoreside municipal water supply systems, SHORESIDE
SYSTEM must be DISCONNECTED IF BOAT IS LEFT UN-
ATTENDED – even if only for a minimal time.
• IF WATER DOES NOT FLOW INTO TOILET DURING
THE FIRST TWO OR THREE FLUSH CYCLES, it has been
improperly installed or has malfunctioned. Discontinue use of
toilet until installation has been corrected or repairs are made.
Please review this manual’s Installation section or refer to the
Troubleshooting section.
• Only human waste and toilet paper should be put into the toilet.
Never flush FOREIGN MATERIALS (e.g. paper towels, pre-
moistened wipes, condoms, feminine hygiene products, dental
floss, household garbage, etc.).
…on your purchase of the Tecma EasyFit marine toilet. Please read this Manual completely to
ensure satisfaction. Thetford’s Technical Support Team is committed to providing quality service and
parts for your high-quality, high-tech marine toilet.
Orig. 10.12.06 Form No. 38493

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Operation
The toilet’s wall switch control has two pri-
mary functions:
• An ADD WATER button – Adds ap-
proximately 0.5L of water each time
it is pushed momentarily. Electronics
prevent overfill.
• A FLUSH button – Starts an add water
and macerate sequence that runs the
motor and adds water twice for maxi-
mum cleansing and minimum water
usage. Sequence ends with a small
amount of water added to the bowl to
provide an odor trap. Recommended
to minimize water use and for liquid
waste disposal without adding water.
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EasyFit Service Kits
1. Seat & Cover
2. Nozzle
3. Controller
4. Pump & Discharge Tube
5. Motor Bracket
6. Water Inlet
8. Floor Mount Hardware
9. J-Bolt
11. Discharge Tube
12. Grommet
13. Wall Switch
14. Bezel
15. Lower Discharge Check Valve
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Lighting
• Blue backlighting of the buttons provides identification at night.
Buttons shut off to preserve power if not used for an extended
interval (see Sleep Mode, next page).
• A red warning light in the lower left corner indicates full-tank
lockout protection is off.
• The holding tank indicator in lower right corner normally is
green. It turns red to show the holding tank is full (or nearly full)
and the flush lockout is activated.
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Flush Lockout
This toilet is equipped with an electronic holding tank level sensing
feature that automatically prevents FLUSH button operation when
the holding tank is full and, thus, prevents waste overflow.
Single Flush Override of Flush Lockout
If holding tank is full, system will not allow a flush to occur. (If a
flush is taking place, it will be completed.) This can be overridden
by holding the FLUSH button for about 8 seconds.
This override function is intended for emergency use only. Because
the sensor is not located at the exact top of a tank, the override
function can be used about 5 times before overflowing. Size and
shape of the holding tank determine the actual number of times it
can be used. Contact manufacturer for more detailed information.
WARNING: An excess of flushes after flush lockout is disabled can cause
waste to overflow tank through plumbing.Thetford Corporation accepts no
responsibility or liability for damage to equipment, or injury or death for
overflow of waste holding tank when full-tank lockout is overridden. Waste
holding tank should be checked after using EasyFit in override mode.
Disabling/Re-enablling Lockout Protection
Flush Lockout normally occurs when the holding tank becomes al-
most full. When this occurs, pushing the flush button causes tank
symbol to flash, but does not cause a flush.

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To switch modes of operation, go to the top of this diagram to enter water refill
programming mode.
Flush Modes
The toilet has two modes of operation: Marine
and Residential. It is shipped in the Marine mode,
which leaves the bowl with a minimal amount of
water in the trap at the bottom of the bowl.
The Residential mode leaves the bowl with a
greater amount of water, similar to a home toilet.
Modes can be changed by a user (see diagram).
The toilet also has a Sleep mode to save power
(see box below).

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Bowl Emptying
To empty bowl without adding water or starting a flush sequence,
push and hold both buttons simultaneously until bowl contents are
discharged. Pushing either button returns toilet to normal operation.
Correct Water Level Usage
Water usage is not adjustable in the Marine Mode.
The recommended water level in the Residential Mode is 5” below
the toilet rim. To set this in the programming mode, release your
fingers 4-5 seconds after water begins flowing into the toilet. Set-
ting the water deeper than this level creates excessive water use and
fills the holding tank too quickly.
CAUTION: Raw Water systems are designed to perform op-
timally with pumps rated at approximately 3.0 Gallons per
Minute (similar to the pump supplied). Lower rated pumps
will provide a less vigorous flush, while use of higher-rat-
ed pumps will cause excessive water consumption.
Maintenance
Cleaning
Use Thetford’s Aqua-Clean, a non-abrasive, all-purpose cleaner,
on the bowl and macerator pump. It is specially formulated and
thoroughly tested to be safe for all components of your toilet sys-
tem. It safely removes iron stains and hard water deposits and can
be safely used on many other surfaces, including countertops,
sinks, showers and tubs. Just squeeze Aqua-Clean onto surface.
Allow to sit a few minutes and clean with a sponge. For severely
soiled toilets, allow Aqua-Clean to soak overnight.
Never use household cleaners, which can contain bleach, in the
toilet system. Household toilet bowl cleaners contain harsh acids.
Bleach, petroleum-based products, strong acids and abrasives can
cause irreversible damage to the toilet system and components.
Winterizing
Use only propylene glycol based, non-toxic antifreeze when storing
toilet during freezing conditions.
Never use automotive antifreeze or windshield washer
solvent to winterize.
Make sure that both the entire supply and discharge systems are thor-
oughly winterized to ensure complete protection for your system.
Storage
When storing the system for more than two weeks, thoroughly
clean toilet and hoses by flushing with Thetford’s Aqua-Kem,
SupremeGreen or Aqua-Clean.
Deodorants
Thetford holding tank deodorants deliver ex-
ceptional deodorant performance, tank clean-
ing and waste digestion.
Formaldehyde-based deodorants like Thetford’s
Aqua-Kem deliver unsurpassed odor control
even in the hottest conditions. SupremeGreen
provides the best non-formaldehyde based odor
control. Both are available as liquids in various
sized bottles, granular in foil packets, and granu-
lar as water-soluble Toss-Ins.
Aqua-Zyme, a liquid available only in a 32-oz. bottle, provides
enzyme-based waste digestion and odor control.
Tissue
It is important to use a RV/Marine tissue that disintegrates rapidly,
which household tissues cannot be relied upon to do. Thetford of-
fers 1- and 2-ply tissues that are specifically made for rapid disin-
tegration, yet provide household tissue softness and feel. Thetford
continually tests its tissues to assure they dissolve rapidly.

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Troubleshooting Guide
PROBLEM CAUSE ACTION/SOLUTION
Toilet does not flush or Waste tank is full (tank indicator Empty waste tank before continuing to use toilet.
flush performance is poor light on wall switch is RED) Override full tank lock-out. WARNING: THIS MAY
CAUSE WASTE TANK TO OVERFLOW.
Clog at pump inlet Clear clog. DO NOT flush foreign objects.
Solid object in macerator Do not attempt to remove object from pump body. Contact Thetford/
Tecma Service (1-800-521-3032). DO NOT flush foreign objects.
Low voltage Check that toilet supply voltage is 12V+/-2V (24V+/-2V)
AND that there is no more than a 10% decrease in voltage
when macerator is running. If voltage decreases more than
this, there may be a wiring problem in the boat.
Water does not enter bowl Water supply line kinked or not Check that supply line is properly connected to fresh
during flush or water add cycle connected water supply.
Check for kinks in the supply line.
No power to water pump Check that fuse/circuit breaker has not tripped.
Ensure all electrical connectors to pump are fully mated.
Water supply has been turned off Open water supply valves or reconnect power to supply pump.
Solenoid not plugged into Ensure wiring harness to solenoid is fully mated at both ends.
controller (where applicable)
Electronics control problem Contact Thetford/Tecma Service (1-800-521-3032).
Water level in bowl has Flush refill mode has been See “Programming” section in Owner’s Manual.
changed after flush changed
Water continues dripping briefly into Toilet is installed below water line with Normal operation – if only a small amount of water drips
bowl after flush cycle is complete vacuum breaker in water supply line from nozzle.
Bowl drains dry after flush Water is siphoning out of bowl Discharge hose from macerator pump bent. Straighten hose .
Wall switch does not appear to No power to toilet Check that fuse/circuit breaker has not tripped
light up or does not stay lit Ensure all electrical connector are fully mated.
Wall switch not properly connected Ensure wall switch electrical connector is fully mated at
to toilet. controller.
Wall switch has entered Sleep Mode Wall switch enters Sleep Mode after eight hours of continuous
inactivity but remains functional. No action required.
Wall switch electronics problem Contact Thetford/Tecma Service (1-800-521-3032).
Toilet is inoperative and there is No power to toilet Check that fuse/circuit breaker has not tripped
no lighting in the wall switch Ensure all electrical connector are fully mated.
Contact Thetford/Tecma Service (1-800-521-3032).
NOTE: This Troubleshooting Guide is intended to provide a basic service aid in the case of incorrect toilet operation. If the suggested actions above do not
resolve the issue, it may be necessary to bring unit in for professional service. Thetford Customer Service – 1-800-521-3032