WILMS EL 12 User manual

Operating Manual
Electric Heaters
EL 12 / EL 20
Perfection is our aim.

EC –Declaration of Conformity
in sense of EC machine directive 2006 / 42 / EEC
Type of machine:
Electric Heater EL 12 / EL 20
are designed, constructed and manufactured in accordance with the above-mentioned
directive, the directive for low tension 2014 / 35 EEC 26.02.2014 and EMV directive
2014 / 30 EEC 26.02.2014. Furthermore, the directive 2011/65 EEC 08.06.2011 Rohs
Directive and 2012/19 04.07.2012 EEC WEEE.
Distributor: Hans Wilms GmbH & Co. KG
Erftstrasse 34
D- 41238 Mönchengladbach
The following harmonized standards have been used:
- EN 60335-2-30/ 2, 2021-05 Safety of electrical equipment
- EN 60335-1, 2020-08 Safety of electrical equipment
- EN 61000-3-11, 2021-03 Electromagnetic Compatibility
- EN 61000-3-3, 2020-07 Electromagnetic Compatibility
- EN 55014-1, 2018-08 Electromagnetic Compatibility
- EN 55014-2, 2016-01 Electromagnetic Compatibility
Mönchengladbach,
02.07.2021 Managing Director
______________ ______________________ ____________________________
Place, Date Signature

CONTENTS PAGE
1. SAFETY INFORMATION ...........................................................................................................................1-4
2. INSTALLATION.............................................................................................................................................4
3. TRANSPORT AND STORAGE ..................................................................................................................4-5
4. INSTALLATION CONDITIONS......................................................................................................................5
5. OPERATING PRINCIPLES...........................................................................................................................5
6. APPLICATION...............................................................................................................................................5
7. DESCRIPTION..............................................................................................................................................6
8. OPERATING INSTRUCTIONS...................................................................................................................6-7
9. TECHNICAL DETAILS..................................................................................................................................7
10. TROUBLESHOOTING AND REMEDY........................................................................................................8
11. SPARE-PARTS-LIST ..................................................................................................................................9
12. WIRING DIAGRAM........................................................................................................................................9
13. CLEANING AND MAINTENANCE.............................................................................................................10
14. END-OF-LIFE OF THE APPLIANCE............................................................................................................11

This sign warns of a potential hazard that may occur if the described
procedures are not taken into account.
Note that this sign is always preceded by:
Danger: Risk of serious or fatal injury.
Warning: Risk of serious and irreparable injury.
Caution: Risk of material damage and further information that may be
useful to users of the heater.
1. SAFETY INFORMATION
DANGER!
Risk of injury due to improper handling.
This appliance may only be put into operation by duly
qualified personnel.
Risk of incorrect repair.
Never attempt to alter/modify or repair the heater.
This heater may only be altered/modified or repaired by a
specialised technician.
Risk of injury.
Always unplug the appliance from the power outlet before
cleaning or performing maintenance.
WARNING!
Take due note of the following safety instructions!
Failure to follow them may result in serious consequences for
users, property and damage to the environment.
In order to avoid overheating, do not cover the heater.
Some parts of this appliance may reach high temperatures, and
may cause burns to the operator.
Take particular care in the presence of children or vulnerable
people.
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•This appliance may be used by children over the age of 8 and by
persons with physical, sensory or mental limitations or a lack of
experience and knowledge if supervised or where they have
received instructions regarding the safe use of the appliance and
they understand the risks involved.
•Children must never be allowed to play with the appliance.
•Cleaning and maintenance should not be performed by children
unless under supervision.
•Children under 3 years should be kept away from the appliance
unless under continuous supervision.
•Children between the ages of 3 and 8 may only switch the
appliance on and off provided it has been placed or installed in
its intended normal operating position and they are under
supervision or have been given instructions as to how to use the
appliance safely and they understand the dangers involved.
•Children from 3 to 8 years should not connect, adjust or clean
the appliance, or perform any kind of maintenance.
Risk of Explosion!
•Do not install the heater in areas where there is a risk of fire
and/or explosion.
•Take the environment into consideration at all times.
•Do not install the heater in areas where fuel is present.
•Remove flammable materials and chemicals.
Precautions for preventing possible damage!
•Check whether or not the appliance is switched on.
•Keep the air intake and exhaust outlet unobstructed.
•Do not cover the appliance during operation.
•Only unplug the appliance once the unit is completely idle.
•Do not use chemicals to clean the appliance.
•Never use the heater as a support base.
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Injuries that may be caused by the use of defective parts!
•Before each use, check that all the accessories are connected
correctly. Check for any defective parts of the appliance.
•Check the power cord for damage. Any damage to the power
cord poses a serious health hazard.
Risk of electric shock!
•Only connect the appliance to power sources that correspond to
the specifications of the appliance.
•Never use damaged power outlets.
•Connect the appliance to a grounded power outlet.
•Disconnect the power cord from the outlet by carefully removing
the plug.
•Do not touch the power cord with wet hands.
•Protect electrical wiring from damage caused by, for example,
animals.
•Do not make any changes or repairs to the appliance!
•Do not allow any liquids to come into contact with the appliance.
•Do not allow any liquids to enter the appliance. Should this occur,
unplug the power cord and arrange for it to be checked by a
qualified technician.
•The heater should not be located immediately below a power
outlet.
•Do not use this heater in the immediate vicinity of a bathtub,
shower, or pool.
Risk of injury
•Changes and repairs to the heater must be performed by
qualified personnel.
•If the power cord is damaged, to avoid hazards, it should be
replaced by the manufacturer, after-sales service or by qualified
personnel.
•Do not insert any objects into the air intake or outlet of the
appliance.
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•Do not insert anything into its openings.
•Do not leave children or animals unattended near the appliance
when it is in use.
CAUTION!
Overheating of the heater can damage the appliance
•Never unplug the appliance by the power cord as this may cause
the appliance to overheat.
2. INSTALLATION
Before operating your heater for the first time, you should carefully read the instructions
manual.
After receiving the unit, you should check if your heater has been damaged during transport.
In the event of damage, you should inform the sender immediately.
Damage during transport should be reported after unpacking the equipment. The seller or
specialised reseller should be contacted immediately.
Keep the packaging of the heater in a safe place in order to be able to dispatch the heater
safely should it require servicing. In order to save space, you can simply cut through the
adhesive tape using a knife and fold up the cardboard box.
During installation and use, proceed as follows:
•Check the contents of the box of your electric heater. If the appliance is damaged or any of
the accessories are missing, contact the point of sale immediately.
•Check the unit for damage.
•Check the appliance before each use and that the conditions are suitable for proper operation.
•Carefully read the “Installation Requirements”, which describe what you need to install your
heater.
•Make sure that the characteristics of the electrical system match the characteristics referred
to in the “Technical data”;
•Before connecting, make sure that there are no foreign objects in the unit preventing rotation
of the fan. If there are, you may try to remove them using compressed air.
Where this fails, contact a qualified technician. As described in “Maintenance and cleaning”,
the dismantling and repair of the equipment must only be carried out by qualified personnel!
•Plug the power cord into a power outlet (400 V / 50 Hz).
•Place the heater in the desired location.
•Lock the front casters to ensure stability.
•The appliance is ready for use.
3. TRANSPORT AND STORAGE
Transport
•Turn off the power.
•Wait until the unit has cooled down.
•Transport the heater using the handle on the top of the heater.
•Ensure that the unit does not slip and remains stable during transport.
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Storage
When the heater is not used for an extended period of time, it must be properly covered and
stored in order to avoid damage.
You should therefore:
•Unplug the appliance from the power outlet.
•Choose a dust-free storage location and cover the appliance.
•Store the appliance in a dry place and prevent moisture from entering the appliance.
•Store the appliance at all times protected from lightning and other unpredictable atmospheric
conditions.
•Locate the appliance in a safe place to avoid possible falls that may endanger people or
damage the appliance.
4. INSTALLATION CONDITIONS
When installing the heater, you should take into account some specific technical conditions.
Failure to comply with these conditions could endanger people and property. Operation of the
heater and its accessories should be tested. When installing the heater, the following must be
observed:
•The heater should be installed on a horizontal surface, safely and in a non-combustible
environment.
•The location must be dry and it must be ensured that no moisture enters the appliance. If any
fluid gets into the appliance, unplug it immediately from the power outlet and arrange for it to
be checked by a qualified service technician.
•The appliance must be connected to a power outlet in accordance with the required technical
specifications (see “Technical data”).
•The heater should not be placed in dusty environments.
•The appliance should be placed at least 2 metres away from any obstruction on all sides.
•It must be at least 50 cm from walls.
•The site should not be excessively humid so as not to cause condensation inside.
•The air intake and outlet of the appliance must not be obstructed.
5. OPERATING PRINCIPLES
This electric heater is a mobile appliance used for heating ambient air. For improved heating,
thawing or drying of spaces, this area should be closed.
The built-in thermostat allows regulation to a constant ambient temperature.
Operating principles
The air to be heated is drawn through an axial fan and subsequently flows through the interior
of the appliance. It is warmed by flowing past a heating element. This air is then expelled by
the air outlet panel into the environment (see description).
The heater may be used in continuous operation.
6. APPLICATION
This electric heater is designed for heating and air ventilation, and may be used indoors. It is
used for drying, thawing, heating or simply for ventilation.
This electric heater has been designed and developed for professional use and is therefore
suitable for use in locations that are under construction, construction sites or for heating and
drying buildings, greenhouses or other industrial areas, cellars, thaw machinery or pipelines.
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7. DESCRIPTION
1Plastic grips
2Housing
3Air outlet grille
4Industrial cam switch (4 stages)
5Thermoregulator (0-40° C)
6Air intake grille
7 Power cord
8Industrial 5 poles plug (3ph + N + E)
9Castors
8. OPERATING INSTRUCTIONS
Turning on the heater
Make sure that the CAM switch (a) is in position “0“ before
plugging in the unit to the mains socket.
Turn the knob of the CAM switch (a) to the desired stage (1-4):
Pos. 1 –Fan only;
Pos. 2 –Heating elements turned on at 50% of the rated power;
Pos. 3 –Heating elements turned on at 75% of the rated power;
Pos. 4 –Heating elements turned on at 100% of the rated
power;
Rotate the rotary knob of the thermoregulator (b) to the desired
setpoint (0-40 °C).
Turning off the heater
To switch the appliance off, turn the CAM switch’s knob to position “0” and remove the plug from the
mains socket.
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Adjusting ambient thermostat
Set the thermostat to the desired operating temperature by turning the thermostat knob (3) - located on
the back of the appliance).
• To raise the temperature: Turn the knob counter clockwise.
• To lower the temperature: Turn the knob clockwise.
Temperature setting may be adjusted during operation. When the ambient temperature reaches the
setpoint determined on the thermostat, the heating elements will be cut. They will resume their heating
function when the ambient temperature drops below the setpoint.
9. TECHNICAL DETAILS
Specifications
EL 12
EL 20
Rated Power
10 kW
18 kW
Nominal Voltage
380 - 415 V~50Hz
380 - 415 V~50Hz
Nominal Current
15 A
26 A
Plug
Industrial plug 16 A
(3ph+N+E)
Industrial plug 32 A
(3ph+N+E)
Heat stages
5 / 7,5 / 10 kW
9 / 13,5 / 18 kW
Air Flow
600 m³/h
850 m³/h
Output temperature (ΔT)
27,3 / 40,7 / 52,2 C
36,3 / 53,9 / 70,5° C
Thermoregulator
0 - 40° C
0 - 40° C
Safety thermostat
90° C
90° C
Dimensions (L x W x H)
300 x 275 x 360 mm
300 x 275 x 360 mm
Weight
30 kg
30 kg
Noise level
56,1 dB (A)
54,8 dB (A)
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10. TROUBLESHOOTING AND REMEDY
Fault
Cause
Remedy
Fan not working
Plug connections
Connect the heater to the power outlet
No supply voltage
Connect heater to a compatible outlet
Consult technical specifications, as
described in the “technical data” section.
Installation fuse blown
Replace the fuse;
Warning! Fuses should not be repaired, but
rather replaced with new ones;
The circuit breaker may be off. Turn the
circuit breaker back on.
Faulty CAM switch
Replace with a new switch. This operation
must be performed by a qualified
technician!
Faulty fan motor
Replace fan motor. This operation must be
performed by a qualified technician.
Abnormal noise
from the fan motor
Fan dirty
Clean the fan as described in the “cleaning
and maintenance” section.
Damaged fan
Replace the fan. This operation must be
performed by a qualified technician!
Faulty fan motor
Replace the fan motor. This operation must
be performed by a qualified technician!
Dirty fan blades or objects
preventing normal rotation of the
fan
Clean the fan blades and fan as described in
the "cleaning and maintenance" section
Damaged fan blades
Repair or replace the fan. This operation
must be performed by a qualified
technician!
Vibrations
The heater is on an uneven surface
Place the heater on a level surface.
The hood is not adjusted or the
bolts are not tightened properly.
Check the hood tightening bolts.
Air intake and/or outlet blocked
Remove any parts that may be blocking the
air intake and exhaust.
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11. SPARE-PARTS-LIST from manufacturer year 49
Pos. Part.-No. Part.-No. D e s c r i p t i o n Qty.
EL 12 EL 20
01 6163300 6163300 Air outlet panel 1
02 6163301 6163301 Air inlet panel 1
03 6163302 6163302 Side panel 2
04 6163330 6163330 Heating elements base plate 1
05 6163304 6163304 Control panel 1
06 6163305 6163305 Air outlet grille 1
07 6163306 6163306 Air outlet shield 1
08 6163307 6163307 Air duct 1
09 6163308 6163308 Fan ring plate 1
10 6163309 6163327 Heating element 6
11 6163310 6163328 Fan blade 1
12 6163311 6163311 Fan motor 1
13 6163331 6163331 Fan motor bracket 3
14 6163313 6163313 Capacitor 1
15 6163314 6163314 Industrial CAM switch 1
16 6163332 6163332 Contactor 1
17 6163316 6163316 Room thermostat 1
18 6163317 6163317 Knob for room thermostat 1
19 6163318 6163318 Safety thermostat 1
20 6163319 6163319 Handle 2
21 6163320 6163333 Supply cable 1
22 6555005 6163202 CEE-plug 1
23 6163321 6163321 Cable gland 1
24 6163322 6163322 Spinning castor without brake 2
25 6163323 6163323 Spinning castor with brake 2
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12. WIRING DIAGRAM
HE 1 - Heating element 1 IS - Industrial CAM switch
HE 2 - Heating element 2 S - Room thermostat
HE 3 - Heating element 3 C - Industrial contactor
HE 4 - Heating element 4 M - Fan motor
HE 5 - Heating element 5 NSR-TCO - Non-self-resetting thermal
HE 6 - Heating element 6 cut-out
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13. CLEANING AND MAINTENANCE
Cleaning
• Clean the exterior of the appliance with a damp cloth. Paint and plastic surfaces should not
be rubbed. Wait until it is completely dry before starting the appliance. Do not use solvent
cleaners.
Make sure that the appliance has no moisture inside.
• To clean the inside, compressed air must be used. The inside may be cleaned through the
air intake or outlet openings.
Maintenance
•Check for any damage to the power cord or any damaged components before operating the
appliance.
•Check the entire structure of the appliance.
•Make sure it is working properly.
•If you hear any unusual noises, stop the heater immediately. Damage may be caused to the
ventilation propeller.
•In the event of malfunction, contact a qualified technician.
•Check before each use of the appliance that there are no objects that may prevent normal
rotation of the fan. Should you find any object, try to remove it with the aid of compressed
air. If you cannot remove it, you should contact a qualified technician.
14. END-OF-LIFE OF THE APPLIANCE
This appliance is marked with the symbol for compliance with European Directive
2012/19/EU on Waste Electrical and Electronic Equipment (WEEE), which means
that this appliance should not be disposed off as household waste at the end of
its life cycle.
The end user is responsible for complying with local law when recycling this
product.
This equipment should be disposed off at a used electrical and electronic equipment
collection centre near you.
You may request further information regarding national recycling options from any local
authority.
Separate collection of used electrical and electronic equipment enables re-use, recycling or
the reduction of adverse impacts from the production and management of such waste,
reducing the overall impact of resource use, improving the efficiency of such use and
contributing towards sustainable development.
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