Conrad OWL-1 Mode D'emploi page 3

O P E R A T I N G I N S T R U C T I O N S
Motor pre-heater
OWL-1 Item no. 85 74 90
OWL-2 Item no. 84 18 43
The product meets the requirements of the current European and National guidelines.
The engine preheater must under no circumstances (not even for testing purposes) be
connected to the power supply prior to installation in the vehicle. This also applies to test
assemblies for testing purposes.
Due to the lack of ventilation, it is inevitable that the product would be destroyed imme-
diately.
The warranty becomes null and void in the event of improper use.
In addition, improper use poses a danger to life!
Intended use
The motor pre-heater is used to pre-heat the cooling water and thus, also the motor components of a vehicle
prior to a cold-start. This allows to achieve a low wear and reduced fuel consumption during the cold-start
phase.
The product is only to be powered by a proper 220-240V AC/50Hz mains Schuko (earthed safety socket)
socket of the public power grid. Never connect the device to any other power supply.
Any other use than that described above, could lead to damage to this product and involves the risk of short
circuits, fi re, electric shock, etc.
No part of the product should be modifi ed or reassembled.
Always observe the safety instructions.
Safety Instructions
The warranty will be void in the event of damage caused by failure to observe these safety
instructions! We do not assume liability for any resulting damage.
We do not assume any liability for material and personal damage caused by improper
use, wrong installation, unauthorised opening of the housing or non-compliance with the
safety instructions. The warranty will be null and void in such cases.
An exclamation mark inside a triangle indicates important instructions in the operating
manual. Please read all of the operating instructions completely before installing or using
the device for the fi rst time; they contain important information on its correct operation.
☞
The "hand" symbol indicates special information and advice on operating the device.
• For safety reasons, unauthorised conversion and/or modifi cations to the product are not permitted.
• Check the product for any damage before using it. If the device is damaged, do not put it into use.
• As source of voltage only an approved mains socket (230 V~/50 Hz) in Schuko design connected to the
national grid system may be used. The installation of this mains socket must comply with the applicable
safety regulations and an earth leakage circuit breaker (GFCI/RCD) must be connected upstream.
• Extra care should be taken when mounting and using the product for the fi rst time. Therefore, please follow
the operating instructions carefully. In case of doubt, let a specialised workshop carry out the installation.
• If you have doubts about how the equipment should be operated or how to safely connect it, consult a
trained technician.
• Check the product and the connections from time to time for damages. An expert must repair the product
in case the device or the connection cables are damaged.
• The product has no place in the hands of children! Children do not understand how dangerous electrical
devices can be. Keep the device out of the reach of children.
• Do not leave packaging material lying around carelessly. It may become a dangerous plaything for child-
ren.
• Please read this manual carefully prior to the installation. In cases of doubts or questions please contact
our technical service or another expert.
• Please, also observe the additional safety instructions in each individual section of these instructions.
Functional Description
Explanation of the cooling system
The cooling system for combustion engines consists of a thermostat, water pump, heat exchanger, cooling
unit and different hoses. In principle, the design is similar for all motors.
The thermostat controls the circulation of the cooling agent. If the motor is cool, the cooling agent circulates
via a so-called "small cooling circuit" (a bypass-line). If the heat regulator is turned to the "heating/warm"
position, the coolant circulates through the heating distance "motor to the interior" and the interior is being
heated.
When the motor has reached its operating temperature, the "large cooling circuit" is opened by the thermos-
tat and in addition, the fl ow to the cooling unit is released.
Short description of the functioning of the motor pre-heater
The motor pre-heater is integrated in the vehicle's cooling circuit.
It heats up the cooling water of the vehicle. By means of the inbuilt pump the cooling water circulates and
heats up all components automatically so that e.g. a temperature of approx. 30-50°C is reached on the
motor's cylinder liners.
This affects the start-behaviour in a positive way and reduces the cold-start wear as well as the fuel/diesel
consumption during the warm-up phase.
Installation
www.conrad.com
Version 08/12
Identifi cation of the connections:
• The inlet of the motor pre-heater is the connection which is secured laterally by screws and which is, as a
delivery setting, slightly inclined upwards.
• The outlet is the other connection which is fi xed to the housing (not rotatable).
• The pre-heater does not require a mounting support, but is fastened and carried by the coolant hoses.
• Search for the return fl ow hose from the indoor heat exchanger to the motor. If it is not clear which of the
two hoses is the correct one (usually there are two hoses), let the motor run for a short time, while the
heater is turned off, so that the motor gets lukewarm. Turn the motor off and touch both hoses. The hose
that is cold is the return fl ow hose you are searching for.
☞
• Check if the installation is possible and suffi cient space is available. The pre-heater must always be moun-
ted vertically (hose connection on top, power connection on the bottom).
• Make sure the installation position of the pre-heater is below the height of the cooling water compensation
tank. The pre-heater is not self-priming!
• Drain off the cooling agent into a clean container. It might be enough to drain only so much that the hose,
to which the pre-heater shall be mounted, is not fi lled any longer.
☞
• The pre-heater's inlet connecting piece "Cold" can be rotated as required so that it points in the opposite
direction (when delivered, the connecting piece points upwards). For this purpose, untighten the screws
which are located on the left and right on the connecting piece insertion and slowly pull out the insertion.
Make sure the components inside the device do not change their position! Rotate the nozzle/insertion so
that it points in the opposite direction. Pay attention that the sealing located on the insertion nozzle does
not turn out of position and is mounted in the correct position. In some cases, an additional sealing of the
insertion nozzle with sealing agent (e.g. silicon) might be required. Apply the sealing agent only on the
sealing surface, and not on the housing! Insert the nozzle carefully in the desired position and press it
tightly on the housing. Tighten the two fastening screws on the left and right side.
• Let the sealing agent bond in accordance with the manufacturer's instructions. Observe all safety instruc-
tions of the manufacturer.
• After observing and considering all previous points, you can now disconnect the selected coolant hose at
a suitable position.
• If there is no non-return valve built-in the cooling circuit, the pre-heater can be installed so that either the
motor or the indoor heat exchanger are preheated fi rst, as required (the outlet connecting piece "warm" is
the nozzle that is fi xed to the housing).
• Lay the coolant hoses to the nozzles of the pre-heater and secure them using the hose clamps included in
the delivery.
• Lay the electric connection cable as desired complying with the safety instructions described above.
• It is possible to lay the connection plug until the radiator grill of the vehicle so that the device can be ope-
rated without previously opening of the engine bonnet. In this case please cover the connection plug with
a cover plug if the device is not to be operated.
• An alternative would be the laying into the vehicle's interior.
Caution, risk of injury while working in the engine compartment
Motor components may be hot even though the motor is not running; cooling ventilators
may start up even when the motor is not running.
The installation must be carried out by a specialist or expert.
Modifi cations to the vehicle which are made necessary through the installation of the
device must always be carried out in such a manner that neither the traffi c safety nor the
designed stability of the car is impaired. If you are in doubt, when selecting a place for
installation, consult your car dealer.
Prior to installation check that the pre-heater can be build in and that the cooling agent
fl ows through the heating system while the ignition is being switched off and thus, the
cooling system is not being blocked.
The pre-heater and its connecting cable must not come in contact with hot or moving
components; the connecting cable must not be squeezed, overstrained or bent strongly.
The pre-heater must be mounted freely and must not touch any motor components.
While mounting the pre-heater the connecting cable must not be connected to a mains
socket.
The connecting cable remains in the vehicle and is to be laid on a suitable position and
secured with a cable tie. The connection plug must be placed at a location that is protec-
ted from humidity or otherwise protected from moisture (e.g. with a cover), in order to
avoid short-circuits or risks of electric shock when connected to the power supply.
Make sure you are not getting injured or come into contact with hot components! If available, use
e.g. an infrared thermometer.
If you do not replace the cooling agent by a new one, avoid any type of soiling! The latter may
block the pump of the pre-heater and thus, damage the device.
Caution! Depending on the coolant used or the additives used in the coolant, the disposal ins-
tructions of the manufacturer are to be observed. The cooling agent must be disposed of in a
professional manner and it must not enter the soil or the normal sewer. Consult the manufacturer
or a specialised workshop regarding the professional disposal and handling of the coolant.
Cooling agents contain glycol/ethanediol and are detrimental to your health if swallowed. Con-
tact with skin and eyes. Must not get into the hands of children. If swallowed, consult a doctor
immediately and show package or label.