times.
After the battery is completely charged, the charger will switch over to trickle charging. This
will expand the lifetime of the battery beyond 500 charge cycles. If the unit is used for more
than 8 hours a day, it is recommended that user carry a second battery for backup.
Batteries may be charged on or off the unit.
3.1.4 Filter assembling
Open the front cover by releasing the retaining clip on the side of the unit by hand (do not use
tools). Fit the filter squarely into the power unit by aligning the three concave points of the filter
box to the three convex points in the cavity. Then press the filter hard and rotate a small angle
clockwise to lock. To unlock the filter , press it and rotate anticlockwise. When air flow alarm is
caused by blockage of filter, it should be replaced in time. Spare filters must be supplied by
the manufacturer.
The pre-filter and the activated carbon filter should be installed
on the inner side of the upper cover, assembled in the order and direction indicated in Figure 1,
and then pressed by the frame. Three notches on the frame are aligned with three buckles on
the top cover. Press the frame and rotated clockwise to lock. To disassemble them, press the
frame and rotated anticlockwise to unlock.
3.2Switching on
The unit can be switched on by pushing the ON/OFF button for about three seconds. A voice
signal will be heard and the LCD will display the real statuses of air flow, filter and the battery
power. Then the unit will run on the low flow level. The flow digit on LCD will be stable in
about 30 seconds after adjusting to each air flow level.
3.3During use
This product has three levels of air flow. By shortly pressing the " SET" button, the flow level
will change according to "low - medium - high - low..." circulation accompanied by a voice
signal. The icon on LCD also changes synchronously. At the same time, the digit on LCD
indicates the real air flow rate. If during use the air supply drops or fails entirely, leave the
work area immediately. If a signal for low battery (2 beeps repeatedly ) or a clogged filter
element is given(a single short beep repeatedly), leave the workroom immediately, and check
according to chapter 6.
3.4After use
By pressing the ON/OFF button for 3 seconds, the motor will stop gradually accompanied by a
long tweet. When the icons on LCD disappeared after about 15 seconds, the apparatus will
turn off completely.
Cleaning and disinfecting
After each session clean the unit, using a mixture of water and a mild detergent.
Subsequently, rinse thoroughly with clean water. Do not use any solvent. During cleaning
ensure that no water is allowed to enter the apparatus. The unit must not be immersed in fluid.
Dry the unit with a cloth and/or leave it to dry in the open air.
Advice
For reasons of hygiene each operator should be equipped with his/hers own hood or mask.
