Desco EMIT 50664 Guide

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© 2006 DESCO INDUSTRIES INC.
Employee Owned
50664/50665 (120V)
50671/50672 (220V)
OVERHEAD ZERO VOLT IONIZER
–
Installation, Operation, and Adjustment
Instructions
3651 Walnut Avenue, Chino, CA 91710
Phone: [phone]
Fax [phone]
DescoEMIT.com

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© 2006 DESCO INDUSTRIES INC.
Employee Owned
50664/50665 & 50671/50672
OVERHEAD ZERO VOLT IONIZER
Installation, Operation, and Adjustment Instructions
The Overhead Zero Volt Ionizer combines the effectiveness of steady-state DC
ionization with ease of adjustability, communication capability, and the flexibility of a micro-
controller based design to produce a versatile and stable ionization system. Three fans
produce extended ionization coverage, and are ideal for areas where bench space is limited.
(Note: for the 2 fan unit, disregard any instructions relating to the 3 fan unit or fan 3.
Optional network software and remote control (ZVI-IR) for adjustments are available.
Installation
Remove the ionizer from the carton and inspect for shipping damage. Included with the unit
are:
1. 50664/50665 or 50671/50672 Overhead Ionizer
2. AC Power Cord
3. Keys (to power on)
4. Hanging Kit
The AC input voltage should be set to the user’s specification prior to shipping (120v or
220v). It can be verified or reset by referring to the Maintenance / Cleaning section of these
instructions.
Before installing unit verify that the AC outlet is properly connected to earth ground.
The unit must have a good earth ground to maintain proper balance. Install the unit in the
desired location, making sure that the airflow will not be restricted through the unit. Make sure
the ON/OFF key switch, located on the side of the unit, is in the “OFF” position. Plug the
power cord into the unit and then into the appropriate AC power source. This equipment has a
grounding type plug that has a third (grounding) pin. This plug will only fit into a grounding
type power outlet. If the plug does not fit into the outlet, contact qualified personnel to install
the proper outlet. Do not alter the plug in any way.
Setup and Operation
The unit is powered on and off by using the keys supplied with the unit. The key switch
is located on the left end of the unit along with the RS485 input/output ports for the optional
ZVI software package. The control buttons along with the LED display are located on the front
of the unit. The control buttons are numbered left to right as shown in Figure 1. Button #1 (W)

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© 2006 DESCO INDUSTRIES INC.
Employee Owned
corresponds to “Back”, button #2 (T) corresponds to “Decrease”, button #3 (S) corresponds
to “Increase” and button #4 (X) corresponds to “Forward”.
When the ionizer is first powered on, the unit will display its default address “000”.
Figure 1
Setup Mode
P r o g Press Wand Xbuttons simultaneously to get into the ionizer setup mode.
JJJJWhen the buttons are released, the unit should beep once and “Prog” should
WTSXappear momentarily on the LED display. The display will then move to the fan
speed settings.
S P d 5 Press Tor Sbuttons to adjust the fan speed from “SPd 1” (lowest), to “SPd 9”
JJJJ(highest) for operator comfort and satisfactory decay times. Press the Xbutton
WTSXto go to the next menu. The next menu is for the balance adjustment. Starting
with fan 1 and moving down to fan 3.
fan #1 fan #2 fan #3
controls

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© 2006 DESCO INDUSTRIES INC.
Employee Owned
B A L 1 Place the charge plate monitor under the left fan (fan 1). Press and hold the T
JJJJbutton (negative), or the Sbutton, (positive), to adjust the balance under fan 1 to
WTSXzero. For finer adjustment, use single clicks of the buttons. Press the Xbutton
to go to the next fan. By pressing the Wbutton you can go back to the previous
fan or menu.
B A L 2 Move the charge plate monitor under the middle fan (fan 2). Press Tor S
JJJJbuttons to adjust the balance under fan 2 to zero. Press the Xbutton to go to
WTSXthe next fan, or press the Wbutton to go to previous menu.
B A L 3 Move the charge plate monitor under the right fan (fan 3). Press Tor Sbuttons
JJJJto adjust the balance under fan 3 to zero. Re-check each fan and repeat Bal 1,
WTSXBAL2, and BAL3 adjustments as necessary to eliminate the effect of airflow
interference between the fans. Press the Xbutton to go to the next menu.
S A V E To save and exit at any time during the setup mode press Wand Xbuttons
JJJJsimultaneously. The 50665 will save all settings and return to normal
WTSXoperation. The 50665 will display “SAVE” and the status of the buttons (“On b,”
meaning that the buttons are enabled), then the unit address.
O n b
JJJJ(Note: the control buttons can be disabled, “OFF b”, by the ZVI-IR remote
WTSXcontrol only.)
To change the three digit network address and enable or disable the remote control, use the
following procedure. Note: Address can only be 000 to 254. If an invalid address is selected
the display will blink, the buzzer will sound three times, and the unit will not continue to other
menus until a valid address has been selected.
1 2 3 Press Wand Xbuttons simultaneously to go into the ionizer setup mode.
JJJJ
WTSX
S P d 5 The unit will display “Prog” momentarily and go to the “fan speed” menu. Press
JJJJthe Wbutton to go back to the “address” menu.
WTSX
1 2 4A The last digit of the address will be flashing. Press Tor Sbuttons to change
JJJJthe last digit (0 to 9). Press the Wbutton to go to the second digit of the
WTSXaddress.
1 54 A The second digit of the address should now be flashing. Press Tor Sbuttons
JJJJto change the second digit (0 to 9). Press the Wbutton to change the first
WTSXdigit of the address.

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© 2006 DESCO INDUSTRIES INC.
Employee Owned
25 4 A The first digit of the address will be flashing. Press Tor Sbuttons to change
JJJJthe first digit (0 to 2). Press the Wbutton to go to the enable or disable remote
WTSXmenu.
O F F r After pressing the Wbutton to get to the enable or disable remote menu the
JJJJdisplay will show “OFF r” for remote off (default setting). This means that the unit
WTSXwill not respond to the remote control. To enable the remote, press the Tor S
buttons until the display reads “On r” for remote on.
Alarm Conditions
The ionizer is able to detect various problems that may occur through normal use. The
unit can detect low and high line voltages, and inoperable high voltage power modules. The
unit will sound a continuous audible alarm during all alarm conditions.
A C L If the unit detects that the AC line voltage is too low, it will display “AC L” and
JJJJsound the alarm. If the unit detects that the line voltage is too high, it will
WTSXdisplay “AC H” and sound the alarm.
S H d 1 If the unit detects that there is something wrong with the high voltage modules, or
JJJJthe sensor circuitry, it will shutdown the high voltage modules of the fan for which
WTSXit detected the problem. If this occurs for fan #1 the unit will display
“SHd 1” and sound the alarm.
Maintenance / Cleaning Procedure
WARNING – RISK OF ELECTRIC SHOCK – These servicing instructions are for use
by qualified personnel only. To reduce the risk of electric shock, do not perform any servicing
of internal parts unless you are qualified to do so.

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© 2006 DESCO INDUSTRIES INC.
Employee Owned
The AC input voltage can be verified or changed by removing the top cover of the unit.
The figures below show the jumper (JH2) configuration for 120 and 220 VAC settings. (Note:
the AC power cord MUST always be disconnected before the unit is disassembled.)
To clean the ionizer first turn off and unplug the unit. Remove the top lid by removing
the six screws along the top of the unit with a Phillips screwdriver. Once the lid is removed the
three fan modules are easily accessible. To remove a fan module disconnect the ribbon cable
connector from the socket and lift the fan module out. The eight emitter points can be easily
cleaned using Semtronics part number S204-200 emitter point cleaner, or 99% rubbing alcohol
and a clean brush. To clean any excess dirt off of the fan and or fan guard it is recommended
to use compressed air. Once the fan modules are clean slide them back onto the alignment
posts, connect the ribbon cable, and replace the lid.
Neutralization (Decay) Times
+19.2
-19.3
+ 32.7
- 28.6
+20.7
- 26.5
+ 1.8
- 2.4
+ 3.3
- 4.3
+ 3.5
- 4.2
+ 1.9
- 2.9
+ 4.0
- 5.9
+ 1.9
- 3.1
+ 10.2
- 12.1
+ 16.7
- 25.4
+ 14.3
- 16.4
+ 6.4
- 9.7
+ 9.9
-17.0
+ 4.8
- 5.1
15” 15”
fan #3fan #2
12”
12”
16” 16”
fan #1
Note: Reference ESD STM 3.1-2000. The distance from the ionizer to the charge plate is 18”.
(Readings are typical and taken at maximum fan speed.)
120VAC 220VA

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© 2006 DESCO INDUSTRIES INC.
Employee Owned
Specifications
•Air Flow
100 cfm each of 3 Fans.
•Balance
0V ±3 volt (typical), 0V ±5 volts (maximum.)
•Dimensions
3-1/2” D x 6-1/2” W x 42” L
•Emitter Points
Machined Tungsten
•Fuse
400 mA slow blow
•High Voltage Power Supply
5kV
•Input Power
115V AC 60Hz or 220/230V AC 50Hz Internal Jumper Selectable
•Ion Emission
Steady State DC
•Ozone
Less than 0.05ppm
•Weight
10 pounds
Area of Optimum Charge and Neutralization for 50671 and 50672

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© 2006 DESCO INDUSTRIES INC.
Employee Owned
TECHNICAL SUPPORT:
USA Europe
Desco EMIT Charleswater
3651 Walnut Avenue Unit 17, Millbrook Business Park, Sybron Way
Chino, CA 91710 Crowborough, East Sussex, TN6 3JZ, U.K.
Tel: [phone] Tel: [phone]
Fax: [phone] Fax: [phone]
NOTE: Unauthorized servicing or modifications to your monitor will void the product warranty
and may create dangerous conditions. Servicing should be performed only at the factory, or
by a Desco EMIT approved technician.
LIMITED WARRANTY
Desco EMIT expressly warrants that for a period of one (1) year from the date of purchase, Desco
EMIT
50665/50664 will be free of defects in material (parts) and workmanship (labor). Within the
warranty period, a unit will be tested, repaired, or replaced at our option, free of charge. Call Customer
Service at 909-627-8178 (Chino, CA) or 01892 665313 (Crowborough, U.K.) for Return Material
Authorization (RMA) and proper shipping instructions and address. Include a copy of your original
packing slip, invoice, or other proof of date of purchase. Any unit under warranty should be shipped
prepaid to the Desco EMIT factory. Warranty replacements will take approximately two weeks.
If your unit is out of warranty, Desco EMIT will quote repair charges necessary to bring your unit up to
factory standards. Call Customer Service at 909-627-8178 for proper shipping instructions and address.
Ship your unit freight prepaid.
WARRANTY EXCLUSIONS
THE FOREGOING EXPRESS WARRANTY IS MADE IN LIEU OF ALL OTHER PRODUCT
WARRANTIES, EXPRESSED AND IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE WHICH ARE SPECIFICALLY DISCLAIMED. The express warranty will
not apply to defects or damage due to accidents, neglect, misuse, alterations, operator error, or failure
to properly maintain, clean or repair products.
LIMIT OF LIABILITY
In no event will Desco EMIT or any seller be responsible or liable for any injury, loss or damage, direct
or consequential, arising out of the use of or the inability to use the product. Before using, users shall
determine the suitability of the product for their intended use, and users assume all risk and liability
whatsoever in connection therewith.