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only regular maintenance suggested is emitter point cleaning, ion balance checking 
and ion output checking, Emitter point cleaning takes only seconds with the patented 
point cleaner. The BLOWER OVERHEAD contains an patented balancing circuit 
that is inherently self balancing. This circuit compensates for dirt build – up on 
emitters, emitter point wear, line voltage fluctuations and variations in air velocity. 
Scheduled checking of the ion output and balance should be considered to assure 
quality audit requirements. 
 
Emitter Cleaning 
To clean the ion emitter points: simply rotate the point cleaner knob located at the 
center of the outlet grille clockwise to the stop (approximately one turn)and release, 
The spring loaded point cleaning brush will return to its parking spot. 
Recommended frequency of cleaning is once a week. 
 
Air Inlet and Outlet Cleaning 
The air inlet grille on the rear of the unit and the ionized air outlet should remain 
clean to prevent restriction of air flow. They can be cleaned with a soft brush or 
vacuum. 
 
Air Filter Cleaning 
Remove the air filter from the rear 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. Install filter on air inlet and secure by snapping the filter retainer in place. 
IMPORTANT: If an air filter is used, clean the air filter regularly. 
Ion Output Check   
To test the unit for ion output the use of a charged plate monitor is recommended. 
Discharge times can be measured and checked against the Ion Output tables in 
Section3, Specifications. If a charged plate monitor is not available, but a static 
meter such as a SIMCO handheld electrostatic field meter SHISHIDO electrostatic 
Analyzer or warmbier charged plate monitor is available, ion output may be checked 
with the following procedure. Take a piece of plastic and rub it with cloth until a 
static charge can be read with the static meter. Turn on the BLOWER OVERHEAD 
and set the fan speed to high. Hold the plastic one foot away from the ionized air 
outlet for five seconds. Remove the plastic from the ionized air stream and measure 
the static charge. The plastic should be neutralized. 
If no instrumentation is available, the unit’s operation can be verified with the 
following procedure. Tear-off about a 10 inch length of    transparent tape. Approach 
the nonadhesive side of the tape with your free hand note the electrostatic attraction 
of the tape to your hand. Pass the tape through the ionized air stream approximately 

Содержание OVERHEAD Series

Страница 1: ...OVERHEAD is a two Fan unit designed to provide targeted coverage for electrostatic problems MATTERS FOR DAILY INSPECTION Clean high voltage needles Verify grounding connection Inspect equipment for da...

Страница 2: ...y The high voltage AC is applied to a circular arrangement of stainless steel ion emitter points which results in an intense alternating electric field at the tip of the emitter points It is this elec...

Страница 3: ...ations Unit Part Number OVERHEAD 120VAC OVERHEAD 230VAC Line Voltage 120 VAC 60 Hz 230 VAC 50Hz Current Draw Max 2 Amp 1 Amp Air Volume Output Fan Speed Flow Low 2 35 CFM High 2 70 CFM Air Velocity Fa...

Страница 4: ...3 15 300mm Tp2 1 5 tp6 3 5 p10 7 0 tp14 11 0 300mm Tp3 1 5 tp7 3 5 tp11 7 0 tp15 11 0 300mm blower Tp4 5 5 tp8 8 5 tp12 11 0 tp16 15 0 1 Offset voltage and discharge time determined as per ESD Associa...

Страница 5: ...The BLOWER OVERHEAD should be placed approximately 1 to 3 feet from the critical work area or objects to be neutralized It should be positioned to cover as much of the area as possible with the ionize...

Страница 6: ...he time required to neutralize a static charge on an item in the air stream depends on many factors Two important factors are distance to ionizer and air velocity Air ions constantly neutralize each o...

Страница 7: ...is stubborn wash the filter in mild soap and water then rinse Blot the filter dry with paper towels and allow to dry Install filter on air inlet and secure by snapping the filter retainer in place IMP...

Страница 8: ...ting value can be changed with difference of temperature humidity and ambient environment Do not try to determine ion balance by holding a static meter in the ionized air stream This will result in s...

Страница 9: ...SECTION 8 How to hang...

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