6
4.4
Optional Air Filter Cleaning
Remove the air filter element from the top of the unit by unsnapping the filter retainer. Rinse the filter in plain water while
gently squeezing. If the dirt is stubborn, wash the filter in mild soap and water then rinse. Blot the filter dry with paper
towels and allow to dry. Reinstall filter on air inlet and secure by snapping the filter retainer in place.
Important
: If an air filter is used, clean the air filter once every three months or more frequently if needed.
4.5
Ion Output Check
To test the unit for ion output, the use of a charge plate monitor such as 3M
™
Charge Analyzer/Charge Plate Monitor 711
is recommended. If a charge plate monitor is not available, but a static meter such as a 3M
™
Static Sensor 718 and 3M
™
Air Ionizer Test Kit, 718A is available, ion output may be checked with the following procedure in accordance with ANSI/
ESDSP 3.3-2006.
It is recommended that the user be familiar with ionizer test standards ANSI/ESD S3.1 if the 3M Air Ionizer Test Kit 718A
is used to perform verification testing on ionizer performance.
Assembly
: slide the charge plate over the 3M Static Sensor 718 until it stops. The charge plate slides onto the lower groove,
on the sides of the Static Sensor 718.
Charging the plate: holding the Static Sensor 718 (with charge plate attached) in one hand, use the other hand to touch the
probe of the Air Ionizer Test Kit 718A charger to the charge plate. Press either the + button (for a positive voltage) or the
– button (for a negative voltage), then remove the probe from the charge plate. Be sure to keep the button pressed while
removing the probe from the charge plate. The display on the Static Sensor 718 will indicate a positive or negative charging
voltage (1.1kV minimum). If a voltage of less than ±1.1kV is displayed, check to see if the low battery indicator on the Air
Ionizer Test Kit 718A Charger is illuminated. If illuminated, replace the battery in the charger. If the unit continues to supply
an incorrect voltage to the charge plate, please contact 3M for additional instructions.
Testing ionizer discharge time: after charging the plate, hold the Static Sensor 718 approximately one foot (30.5 cm) away
from the ionizer. Monitor the display to see how quickly the 1.1 kV charge is dissipated to 0.1 kV. The speed at which this
occurs (the discharge time) indicates how well the ionizer is operating. Repeat this procedure for both a positively and a
negatively charged plate.
Testing ionizer offset balance: zero the charge plate by touching it with a grounded object. This can either be the finger of a
grounded person or some other item which is connected to electrical ground. In either case, zeroing the charge plate should
make the display on the Static Sensor 718 read zero. Hold the Static Sensor 718 approximately one foot (30.5 cm) in front
of the ionizer.
Monitor the display. The value displayed is the offset balance of the ionizer, which is the difference between the number of
positive and negative ions being emitted.
4.6
Ion Balance Check
To test the unit for ion balance, the use of a charge plate monitor such as the Charge Analyzer/Charge Plate Monitor 711 is
recommended.
