Labconco Precise HEPA-Filtered Glove Boxes 5220231 - Manual (Page 51)

Appendix D: Ionizer Fan Performance Criteria
Product Service 1-800-522-7658 47
Test Point Locations and Voltage Levels
Metal
Housing
Inlet
HEPA
Metal
Housing
Exhaust
HEPA
Metal
Transfer
Chamber
Handle
Back
Interior
Surface
Left
Interior
Surface
Right
Interior
Surface
Interior
Lamp
Window
Center
Work
Surface
Electrostatic with
Glove Box Blower &
Ionizer Fan OFF + 420 + 220 + 734 + 375 + 106 + 151 + 242 + 153
100 CFM Blower &
Ionizer Fan ON
After 1 Hour + 96 + 114 + 290 + 93 + 45 + 52 + 46 + 35
100 CFM Blower &
Ionizer Fan ON
After 2 Hours + 28 + 58 + 51 - 52 - 15 - 20 - 28 - 22
The mini zero volt ionizer’s neutralization time will be shortest when objects are
approximately 12" to 36" directly in front of the ionizer and will increase as the
distance from the ionizer increases. Set the fan speed switch on the side of the
ionizer to the LOW or HIGH position. Higher airflow will result in faster
neutralization rates. Position the ionizer so that the maximum airflow is directed
at the items or area to be neutralized. The LED will turn on during power up and
remain GREEN during normal operation. The ionizer has a grounding jack and
must have a good earth ground to maintain proper balance. Always plug the AC
power adaptor into the ionizer and then into the appropriate AC power source.
The ionizer has no On/Off switch so it should be running as soon as it is plugged
in. The ionizer is designed to run off of 24VDC ±10% 300mA.
The balance adjustment for the ionizer can be accomplished by inserting a small
screwdriver or trimmer adjustment tool into the balance adjustment hole located
on the side of the unit. To increase the output in a positive direction, turn the
potentiometer in a clockwise direction. Conversely, to increase the output in a
negative direction, turn the potentiometer in a counter clockwise direction. It is
recommended that you use a surface DC voltmeter when adjusting the balance of
the ionizer.
Under normal conditions, the ionizer will attract dirt and dust (especially on the
emitter electrodes). To maintain optimum neutralization efficiency and operation,
cleaning with isopropyl alcohol should be performed on a regular basis. If the
performance of the ionizer degrades because of dirty or corroded points, the LED
on the front of the unit will turn YELLOW; the audible alarm will sound
continuously. Under this condition, the unit is not able to maintain balanced
ionization. The input power cord must be disconnected before the unit is opened
for maintenance. The emitter electrodes should be cleaned using the alcohol
cleaners included or a swab wet with isopropyl alcohol. Unscrew the 4 screws on
the back of the unit and then remove the screen. After cleaning the emitter
electrodes, reinstall the screen and 4 screws. The emitter electrodes should not
require replacement during the life of the unit with normal handling. Verify the
balance of the ionizer with a surface DC voltmeter after cleaning.
Static Electricity Test Results (VOLTS) on the Glove Box
(Neutralization is best between +/-100V)