TB-3043
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© 2019 DESCO INDUSTRIES INC
Employee Owned
DESCO WEST
- 3651 Walnut Avenue, Chino, CA 91710 • (909) 627-8178
DESCO EAST
- One Colgate Way, Canton, MA 02021-1407 • (781) 821-8370 • Website:
Voltage Selection Header
Power Jack
Jumpers
Figure 3. 110V jumper setting
Voltage Selection Header
Power Jack
Jumpers
Figure 4. 220V jumper setting
Adjustments and Compliance
Verification
BALANCE OFFSET VOLTAGE ADJUSTMENT
The High Output Benchtop Ionizer is an auto-balancing unit.
However, tuning or manual adjustment can be accomplished
by inserting a small screwdriver or trimmer adjustment tool
into the balance adjustment hole located at the rear of the
unit (see Figure 2). To increase the output in a positive
direction, turn the potentiometer clockwise. To increase
the output in a negative direction, turn the potentiometer
counter-clockwise.
MAINTENANCE / ALARMS
In the event of circuit failure, the unit will enter shutdown
mode.
When the unit enters shutdown mode, ionization will be
stopped, the LED on the front of the unit will illuminate a
constant red, and the audible alarm will continuously sound.
The user must then reset the unit by turning it OFF and back
ON.
WARNING - RISK OF ELECTRIC SHOCK
THESE SERVICING INSTRUCTIONS ARE FOR USE BY
QUALIFIED PERSONNEL ONLY. DO NOT PERFORM
ANY SERVICING OF INTERNAL PARTS UNLESS YOU
ARE QUALIFIED TO DO SO.
NOTE: The AC power cord MUST always be disconnected
before the unit is disassembled.
The input voltage may be verified or reset by removing the
3 screws located on the back of the unit then removing the
back case.
The input voltage can be selected using the two internal
jumpers shown in Figures 3 and 4.
If the supply voltage drops from 110 Volts to below 85 Volts
or from 200 Volts to below 170 Volts, the unit will shut down,
the audible alarm will beep and the LED will blink red. The
unit will automatically reset when the minimum voltage is
restored.
Compliance Verification should be per ESD TR53. Offset
voltage (balance) and both polarity’s discharge time should
be checked on every ionizer periodically using an Ionization
Test Kit or a Charged Plate Analyzer. Measure offset
voltage (balance) and both polarity’s discharge times. Clean
the emitter points (with electrical power off), adjust offset
voltage (balance) to zero and then re-test for offset voltage
(balance) and discharge times recording the measurements.
