INST6210 – 4/09
Installation / Operation / Maintenance
Sentinel Benchtop Ionizing Blower
Model 6210
Troubleshooting
The internal state-of-the-art circuitry of the Sentinel Blower
monitors the ion balance of the air exiting the blower, main-
taining optimal offset voltage (balance) to protect ESD
sensitive components and products. If the circuit detects an
offset in the ion balance due to dirty emitter pins or other
conditions, it manipulates the output of the internal DC high
voltage power supplies to compensate for the offset and cor-
rect the condition. When the Ionizer status light is green, the
system is functioning properly and sensing balanced ioniza-
tion. When the status light turns amber an audible alarm
sounds warning of a “fault” condition, which can usually be
resolved easily by the end user.
To troubleshoot a fault condition, follow these steps:
•
Turn the switch to “OFF”.
•
Remove the power cord from the back of the Ionizer.
•
Using a small, soft nylon (or similar) bristle brush,
lightly dampened in isopropyl alcohol (not more than
70% solution), clean the eight (8) stainless steel emitter
electrode pins, the fan blades and the internal sensing
grill from the back side of the Ionizer to remove any dirt
or dust. A toothbrush can be used if the back cover is
removed from the Ionizer but power must be discon-
nected from the Ionizer before opening up the chassis to
prevent an electrical shock hazard. If available, blow
out the Ionizer with compressed air to clean it out and to
dry the alcohol before powering back up.
•
Reconnect to power and turn the Ionizer on.
If the alarm condition persists, adjust the balance of the Ion-
izer using the small potentiometer screw accessed through
the tiny hole at the bottom left corner at the back of the Ion-
izer. This should only be done by an experienced technician
using proper equipment and procedures as specified in the
EOS/ESD-S3.1-1991 Standard. NRD LLC can calibrate and
certify the Ionizer performance for a nominal fee. If unable
to correct a fault condition, the Ionizer must be returned pre-
paid to the factory for evaluation, repair and/or calibration.
Contact NRD for a Return Authorization number and ship-
ping address.
IMPORTANT NOTE:
In some cases, if the balance-
sensing grill inside the blower becomes contaminated, the
Ionizer may not be able to detect an out-of-balance condition
and may continue to run in a “green light” status.
The presence of contamination on the backside (the side
nearest the fan) of the balance-sensing grill can cause the
Ionizer to overcompensate due to a false reading of the bal-
ance. Keeping the Ionizer clean as recommended in the
Maintenance section of this manual will help insure optimal
performance from your Sentinel Blower. A filter has been
provided for applications and/or environments outside of the
Cleanroom and Medical Industries. It is strongly recom-
mended that industrial manufacturing type users install the
filter onto the back grill using the
¾
” round hook fastener
dot (included with the Ionizer) to keep the inside of the Ion-
izer clean. This filter should be changed every 2 – 4 weeks,
or as needed per visual inspection.
Contact NRD for service, replacement filters, parts infor-
mation and pricing.
Limited Warranty
NRD expressly warrants that for a period of one (1) year
from the time of purchase, the Ionizer will be free of defects
in material (parts) and workmanship (labor). Within the
warranty period, the Ionizer will be tested, repaired, or re-
placed at discretion of NRD, free of charge. Any Ionizer
under warranty should be shipped prepaid to the NRD facto-
ry. Call Customer Service at (716) 773-7634 for a Return
Authorization number and shipping instructions. Include a
copy of your original packing slip, invoice, or other proof of
purchase date.
If the Ionizer is out of warranty, NRD LLC will quote repair
charges necessary to bring your Ionizer up to factory stand-
ards.
Warranty Exclusions
The forgoing express warranty is made in lieu of all other
product warranties, expressed and implied, including mer-
chantability and fitness for a particular purpose that is
specifically disclaimed. The express warranty will not apply
to defects or damage due to accidents, neglect, misuse, alter-
ations, operator error, or failure to properly maintain, clean
or repair products.
Limit of Liability
The user shall determine the suitability of the product
for their intended use, and the user assumes all risk and
liability whatsoever in connection therein.
