The unit ensures a constant supply of air. The microprocessor inside the unit
automatically regulates the motor speed to compensate the filter clogging and the
battery state. If the microprocessor cannot keep the set airflow, the alarm starts
(an acoustic signal can be heard and the LED diodes come on red). If possible, the
microprocessor automatically reduces the airflow to the next lower level. When the
airflow falls below the minimum level, the alarm intensifies. At that very moment
the user must stop working and recharge/change the battery or change the filter.
To check the alarm function: see chapter air flow test.
To check the battery capacity: Press and hold the small fan-icon for more than
1 second. The more LED diodes come on (red) the higher the remaining battery
capacity is. (fig. 1)
To check the filter capacity: Press and hold the large fan-icon for more than
1 second. The more LED diodes come on (orange), the more clogged the filter
is. (fig. 1)
After releasing the fan-icons, the LED diodes return back to the green light,
indicating the actual airflow.
Initial operation
Inspection before use
Each time before starting work check that:
• All components are in good condition with no visible damage (like holes, tears
etc.) Carefully examine the air hose, seals and the welding helmet.
• Replace any damaged or worn parts.
• There is a good connection between the air hose and the helmet as well as the
blower unit
• There is sufficient air flow. (See chapter air flow test)
• The air is supplied through the whole respiratory system from the blower into
the helmet.
Charge the battery before the first use. (See chapter batteries)
Air flow test
1. Disconnect the air hose from the helmet.
2. Cover the disconnected end of the air hose with your hand. The blower starts
to increase the rotation speed and after about 20 seconds, the audible alarm
activates and the LED diodes on the control panel start blinking. (fig. 7)
3. Release the hand. The blower rotation speed should decrease. If the rotation
speed does not change, it is necessary to check the unit as described in chapter
possible errors.
Maintenance / Cleaning
It is recommended to clean the respiratory system after each use. Also inspect all
parts and replace any which are damaged or worn.
• Always clean the respiratory unit in a ventilated room or outside. Be aware of
harmful dust settled on any parts of the unit.
• Never use flammable cleaning liquids or abrasive cleaners!
• The outer surface of the blower unit can be cleaned with a soft cloth wet slightly
in a mild solution of clean water and mild detergent. Dry it properly afterwards.
• Ensure that no water or detergents enter into the blower unit!
• The air hose itself, detached from the blower unit can be rinsed in clean water.
Spare parts / Replacing spare parts
The blower unit Optrel e2100 may be used only with all three filters installed. Strictly
use three identical filters at one go (one set of 3 filters).
It is prohibited to clean the filters by any procedure!
Changing the filters (see cover):
Fig. 8: Dismount the filters from the unit by unscrewing them one by one.
ATTENTION! Check that the new filters are within the expiry date and that the
packaging is undamaged and sealed. Also check that the rubber sealing in the
thread of the unit is not damaged and clean all the sealings.
Fig. 9: Mount the new filters onto the blower unit one by one. Screw all 3 filters
tightly to prevent leaks.
Selection of the filter acc. to the type of contamination
Ordering
Filter type*
code
4088.030
TH2P R SL
4088.031
TH2A2P SL
4088.032
TH2A2B
2E2SXP
SL -
Ozone
*Filters for Optrel e2100 blower units are marked acc. to EN 12941
Batteries
NOTE! Batteries are delivered discharged. All batteries must be charged before they
are used for the first time. The battery can be charged separately or on the blower
unit. The charger must not be used for any other purpose than that for which it was
manufactured. Do not charge the battery in a potentially explosive atmosphere. The
battery charger is intended for indoor use. It must be protected against damp. The
charger controls the charging automatically. After the battery has been charged, the
charger switches to the trickle charging mode and keeps the battery fully charged.
The charging time is 10 hours.
Battery charging
1. Check that the line voltage is suitable for the battery charger.
2. Plug the charger into the socket.
3. The battery can be charged directly in the blower unit or separately. Connect the
blower unit (fig. 10) (connector on the side) or the battery (fig. 11) (connector on
the back) to the charger. The charging process is signalised by a red LED diode
light on the charger.
4. After charging has been completed, the trickle charging mode is activated. Both
red and green LED diodes illuminate.
5. Disconnect the charger from the power supply. Do not leave the charger in the
power supply if not in use!
Battery changing
Fig. 12: Removing the battery: Turn the blower unit upside-down with the battery
positioned away from your body. Press the two latches with your thumbs in the
direction of the arrows. This will release the battery.
Fig. 13: Slide the battery downwards until it is completely removed from the blower
unit.
Fig. 14: Fitting the battery: Hold the blower unit in the same position as before. Put
the battery on the rails, which are along the sides of the blower unit.
Fig. 15: Push the battery back until the latches get in position again.
Possible errors
If there is a sudden change in air supply, it is necessary to check the following:
• That all parts of the air-supplying system are assembled properly.
• The battery and its connector.
• Filters and their clogging.
• That there is not a hole in the air hose.
• Whether the helmet seal is not damaged.
• Whether the working time after a full recharging of the battery has not decreased
(if so, it is necessary to replace the battery. Please dispose of the used battery in
accordance with the national regulations for special waste).
2
Colour
Type of contaminant
code
White
Solid and liquid particles (Aerosols)
Brown
Organic gases and vapours with boiling
point >65°C
White
Solid and liquid particles (Aerosols)
Brown
Organic gases and vapours with boiling
point >65°C
Grey
Inorganic gases and vapours such as Chlorine,
hydrogen sulphide (H2S), hydrogen cyanide
(HCN)
Yellow
Sulphur dioxide (SO2)
Violet
Ozone (O3)
White
Solid and liquid particles (Aerosols)