Weldline Green Zephyr Flip Air LS PAPR Parts FAQs
Spares for a powered air respirator welding helmet system: filters, hose, battery, charger, belt, cover lenses and the auto-darkening filter.
How do I know when the main particle filter needs replacing?
Replaceable filters should be changed when necessary and as the manufacturer instructs, because a clogged filter reduces airflow. Maker manuals tie this to the unit itself: a low airflow alarm that sounds with a fully charged battery, a battery that runs for much less time than before, or a filter that is damaged or wet.
Particle filters are not designed to be washed, tapped clean or blown out with compressed air. The interval depends on how much welding and grinding you do and in what conditions, so follow your manual and risk assessment rather than a fixed number of weeks. Marking the fitting date on the filter is good practice.
How do I check the airflow before I start work?
Check that the fan is providing enough airflow before you use a powered respirator, and never use one that is not providing enough air. Maker manuals add that you should inspect the equipment for damage before every use and test the airflow and alarm as the manual describes.
Fit the filters, spark guard and hose as for normal work, make sure the battery is fully charged, switch on and use the flow indicator or alarm test your manual describes. If flow is too low, check for a loaded filter, a flat battery, a kinked hose, a blocked outlet or a loose connection. If it is still low, do not weld until the unit has been checked.
What should I do if the unit gives a low airflow or low battery alarm?
Treat it as a real warning. Never keep working if the fan stops or the flow rate falls, and leave the work area immediately. Maker manuals say the same for low airflow and low battery alarms, and to leave the contaminated area if the unit stops working for any reason.
Once you are in clean air, look for the usual causes: a loaded filter or pre-filter, a flat battery, a kinked hose, a blocked spark guard or a loose connection. Recharge or replace as needed and repeat the airflow check before going back. If the alarm keeps returning, have the unit examined before it is used again.
How should I look after and charge the battery?
Checking the battery charge is part of routine maintenance for powered respirators, and you should follow the manufacturer's instructions. Charge the battery only as your manual describes: use only the charger the maker supplies for that battery, because a wrong charger can cause a fire, and charge within the temperature range the maker gives. Many makers say to let a hot battery cool before charging.
For long storage, some makers advise keeping the battery part charged and checking it from time to time, and keeping filters in their sealed packs in clean, dry conditions. Much shorter run time is a reason to check the filter first, then replace the battery if it persists. Follow your manual for anything else.