26
Trouble Shooting
25
Trouble Shooting
Trouble Shooting
20
Problem Cause Solution
The motor head
cannot be
affixed to the
filter case
Water leakage
from the motor
head
The motor is
not operating
Reduced
water flow
Air build up
The respective “ ” marks on the filter
container and the filter case are not aligned
Incorrect arrangement of the filter
containers
Too much filter media has been put into the
containers
The lift buckles and/or safety buckles are not
properly closed
There are foreign substances or dirt on the
filter case or O-ring
The O-ring is displaced, damaged and/or missing
The edge of the motor head is damaged
Improper assembly of the hose adaptor unit
The power is off
The impeller shaft is broken
The impeller is missing or is clogged with
foreign materials such as pebbles and shells
Hose adaptor unit is excessively dirty
Hoses have been incorrectly connected
Excessive dirt build up in the hoses
Water intake strainer is clogged
Filter media is clogged
Filter media have been put in nets or materials
other than those supplied by the manufacturer
Filter media have been improperly combined
Filter floss is too dirty
Dirt build up in the impeller chamber
Water is not circulating
Components other than those supplied by the
manufacturer have been attached to the hoses
There is insufficient distance between the filter
and the water surface level of the tank
Filter media is clogged
Make sure that the “ ” marks are properly
aligned
Make sure that the connection pipes of the filter
media containers are properly aligned
Take out excess filter media and flatten remaining
media
Close all the lift buckles and safety buckles
properly
Thoroughly clean the adjoining section of the
O-ring and filter case
Set or replace the O-ring
Replace the motor head (*consult place of
purchase)
Properly assemble the hose adaptor unit
Make sure that the power is on
Replace the impeller shaft (*consult place of
purchase)
Set or clean the impeller
Detach the hose adaptor unit and clean the inside
under warm water
Check whether the hose is entangled or crimped
Periodically clean the inside of the hoses and the
intake and drainage pipes
Remove all foreign substances, clean off the dirt
Remove the filter media and wash with tank water
taken from the tank
Do not place the filter media in nets or nylon
stockings. Doing so may cause clogging, which in
turn may block the water flow
Check that the filter media have been set as per
the manual
Replace it with a new one
Thoroughly clean the impeller chamber/impeller
under warm water
When starting, check that the return pipe is
above the water surface level of the tank (required
to remove air in the filter), then press the start
button (water Priming function)
Avoid using accessories other than those provided
by the manufacturer, as this will inhibit water flow
The top of the motor head should at least be
10 cm below the water surface. The larger the
distance the better (see recommendations)
Clean the filter media
Problem Cause Solution
Air build up
Automatic
Priming is not
functioning
smoothly
Abnormal sound
emitted when
starting the
filter
Abnormal sound
emitted when
operating the
filter
Air is coming in through the overflow pipe
Filter media has not been sufficiently cleaned
Filter media has been put in nets etc.
Air is entering from the hose connection
Air is remaining in the filter case
Insufficient lubrication of o-ring
Inconsistent intake of water due to lack of water
intake
The top of the motor is at the same level or higher
than that of the water surface
Air is remaining in the filter
Damaged impeller/drive magnet or spindle
Every 10 seconds a sound of air being expelled
from the return pipe is emitted
Decrease in water flow due to water staining or
dirt on the impeller/drive magnet
The “start” button is being pressed
Replace the O-ring on the overflow pipe or ensure
that the connection between the overflow pipe and
water intake pipe is below the water surface level
of the tank.
Remove the filter media from the containers and
clean them with tank water taken from the tank
Do not place the filter media in nets or nylon
stockings. Doing so may cause clogging, which in
turn may block the water flow
Check whether the hoses are connected properly
Leaving the power on, shake the unit to help
remove remaining air
Apply ample vaseline to all of the O-rings
Press the “start” button and repeat procedure
from the beginning
Ensure that the top of the motor is at least 10cm
below water level (see recommendations)
Remove and replace the plug in the socket 3-4
times Gently shake the filter to remove remaining
air
Please consult place of purchase
Due to breathing of bacteria and photosynthesis of
water plants, air bubbles may accumulate and
sounds of it being let out from the Tetratec®EX
Filter may be heard. Corrective measures are not
necessary.
The motor is cooled by water hence if water in the
drive system is dirty or dirt is allowed to
accumulate, water flow will be inhibited and life of
the motor will be decreased. Periodically clean the
impeller/drive magnet and the surrounding area
under warm water.
Do not press the “start” button or put anything on
top of it while the filter is running
Note: For purposes of product improvements, specifications may be altered without notification.
Safety First
Always isolate the unit from the mains electricity before
carrying out any maintenance work.
The electrical cord cannot be replaced. If the cord is
damaged the appliance should be scrapped. On no
account must an unqualified person attempt to carry out
any electrical repairs on this unit.
For more information on fishkeeping please contact Tetra
Information Centre at the address above.
Tetratec®Tip:
Tetra offers you a wide choice of high-
quality products which are available at your
local retailer. If you need further advice do
not hesitate to contact us.
Tetra GmbH
D-49304 Melle,
Germany
www.tetra.net
3 Year Guarantee
Thanks to modern production processes, high-quality components and strict quality controls we allow a
guarantee of 3 years from the date of purchase on the accuracy of the Tetratec®EX Filter. Please keep proof
of purchase! The guarantee does not cover improper use, normal wear and tear as well as modification to
the appliance. In case of complaints please contact your local retailer or address to Tetra (UK) Ltd, P.O. Box
271, Southampton, SO18 3ZX.
