Telwin GX EN175 F CE Manuel D'instructions page 7

speed (2) and High speed (3).
• To shut-off: press the On/Off button for 1 second until the acoustic alarm and the
ventilator stop.
The danger indicator (4) switches on, the alarm sounds and the ventilator vibrates if the
level of the battery is low or the air flow is reduced due to a dirty filter, an obstructed
breathing tube or other problems.
The battery level indicator (5) displays the residual load of the battery:
• Green led on if the battery level is over 90%;
• Yellow led on if the battery level is under 90% but over 50%;
• Red led on if the battery level is under 30% but over 10%;
• Red led flashing if the battery level is under 10%.
6.2.2 Air flow test (Fig. F)
Disconnect the breathing tube from the helmet. Insert the flowmeter (1) in the breathing
tube (3). Keep the flow rate gauge upwards and start the ventilator: the flow rate gauge
sphere should be over the "Minimum" mark (2). If the sphere is under the minimum value,
check the battery and correct cleaning and assembly of the filter components.
6.2.3 No air flow alarm test (Fig. F)
Disconnect the breathing tube from the helmet, then start the ventilator and block the air
flow by positioning the palm of your hand on the open end of the breathing tube.
Continue to block the air flow until the alarm sounds and the vibrator vibrates. If the alarm
does not sound and the ventilator does not vibrate, check the battery and the filtering
element.
6.2.4 Complete respirator test
Before using the respirator, check the following elements:
• Air filter unit: check the air filter is suitable for application. Furthermore, check the filter is
not damaged, is correctly assembled and firmly connected to the blower unit.
• Breathing tube: ensure the tube is not damaged and is correctly connected to the blower
unit and the hood of the helmet.
• Battery: check the battery is completely charged and firmly connected to the blower unit.
• Air flow: test the air flow according to the tests described in the previous paragraphs.
• Air flow alarm: switch on the blower unit and check the acoustic, visual and sensory
(vibration) alarms as described in the previous paragraphs.
• Facial seal: inspect the front gasket and replace it, if damaged.
6.2.5 Wearing the respirator (Fig. H)
• Position the blower unit on the lower part of your back with the breathing tube extending
upwards.
• Connect the belt around your waist and adjust it to ensure it is comfortable but secure
fastening of the blower unit.
7. MAINTENANCE AND CLEANING
7.1 HELMET MAINTENANCE AND CLEANING
• Replace the batteries when the "RED" led lights up.
• Replace the transparent internal/external protection plates of the filter in the event of
breakage, scratches, nicks and deformations. Cheap guards compromise good vision of
what you are doing, dangerously lowering the level of protection of the helmet.
• Regularly clean the surface of the filter and the protection plates with a soft cloth with
non-aggressive cleaning solutions, for example window cleaning formulas (do not pour
the product directly on the filter).
• Regularly check the solar cells and sensors are not blocked or covered by dirt. If this is the
case, clean them with a soft paper tissue, possibly lightly soaked with window cleaner (do
not pour the product directly on the filter).
• Clean and disinfect the helmet only with water and soap or solvent-free products. Use
of chemical products causes aesthetic defacing even up to a complete reduction in the
intactness of the helmet.
• Good general care of the helmet allows to reduce its obsolescence to the minimum, both
from the point of view of use and that of components on the helmet.
• Regularly clean the surface of the filter with a soft cloth with non-aggressive cleaning
solutions, for example window cleaning formulas (do not pour the product directly on the
filter).
7.2 RESPIRATOR MAINTENANCE AND CLEANING
Disconnect the battery, the breathing tube and the blower. Inspect all the parts to search for
any damage. Replace all the damaged parts before storage or next use.
• Blower: clean the outer surfaces of the PAPR unit and the battery pack with a soft cloth
soaked in a solution of water and pH neutral detergent.
Do not immerse the blower or the battery pack in water. Do not use solvents or abrasive
detergents. Do not try to clean inside the blower with compressed air.
Ensure the electrical contacts of the blower and the battery pack are dry.
If the blower will not be used for a long period of time, remove the filter and the battery
and keep it in a dry and cool place, without solvent based vapours.
• Breathing tube: clean the connection zones of the breathing tube with water and
detergent solution. The breathing tube can be immersed in water for cleaning. Inside the
tube must be completely dry before use or storage. Dry in air or dry connecting it to the
blower unit and use it to force the air through the tube until it is dry.
• HEPA filter: open the cover of the filter and inspect the HEPA filter. Replace, if excessively
dirty.
TAB. 1
Welding process
and related technics
Coated electrodes
MAG
TIG
MIG on heavy metals (*)
MIG on light alloys
Air-arc cutting
Plasma-jet cutting
Microplasma arc welding
(*) The term "Heavy metals" refers to steel and its alloys, copper and its alloys.
Numbers of shades and uses recommended for arc welding
1.5 6 10 15 30 40
8
8
8
9
9
4 5 6
1.5 6 10 15 30 40
8. TROUBLESHOOTING
During helmet operation, common problems may arise, listed here with the relevant
solutions:
• The filter does not darken or is unstable when switching from light to dark and vice versa.
Possible solution:
- The external transparent guard of the filter is dirty or damaged (change the external
transparent guard).
- The sensors are dirty (clean the sensor surface).
- The level of welding current is too low (increase the sensitivity, if present, or replace the
helmet with another one having a suitable filter for the purpose).
• Slow switching.
Possible solution:
- Operating temperature too low (do not use at ambient temperature under -5°C (+23°F).
• Poor visibility.
Possible solution:
- The external guard and/or the internal guard of the filter and/or the filter are dirty or
damaged (clean the dirty components and replace damaged ones).
- The surrounding ambient does not have sufficient light (provide more light to the
surrounding ambient).
- The scale gradation number is not correctly set (select the correct value in the models
where possible).
• The ventilator does not provide air to the helmet.
Possible solution:
- Press ON / OFF to start the ventilator.
- Recharge the battery.
- Check the battery is correctly connected to the ventilator.
- Remove blockage from the ventilator output and from the breathing tube.
• Battery charge lasts less than planned.
- Ensure the battery pack is fully charged.
- Replace the battery.
- Replace the battery charger.
- Check the air filter and, if necessary, replace it.
• The ventilator cannot be switched off.
- Press ON/OFF for 1 second.
• The red level signal light of the battery flashes.
- Charge or replace the battery.
• The danger signal light is on, the alarm sounds or the fan vibrates.
- Check the air flow rate of the ventilator, as indicated in the previous paragraphs.
ATTENTION!
If the aforementioned malfunctions cannot be resolved, immediately
suspend use of the helmet and contact your nearest distributor.
Amper Current
60 70 100 125 150 175 200 225 250 300 350 400 450 500 600
9 10
9 10
9 10 11
10
10
10
10 11
7 8 9 10
60 70 100 125 150 175 200 225 250 300 350 400 450 500 600
- 7 -
11 12
11 12
12 13
11 12
11 12 13
11 12 13
12 13
11 12
13 14
13 14
13 14
14
14 15