Brightness-Enhanced Display Option and
Moisture Deflector Option
3M Dynapro ET 3250 and ET 3255 Computers
About the options
The Brightness-Enhanced (BE) Display and Moisture
Deflector are options for 3M Dynapro ET 3250 and
ET 3255 Computers.
Your ET 3250/3255 computer with Near Field
Imaging (NFI) touch screen technology comes with
one of the following options:
n Moisture Deflector
n with standard display
n with BE display
n BE Display only (no Moisture Deflector)
Moisture Deflector
The Moisture Deflector (see Figure 1 and Figure 2) is
a durable plastic component that surrounds the touch
screen display of an ET 3250/3255 to improve
performance in conditions in which moisture might
collect on the unit.
Handling and maintaining the
Moisture Deflector
The Moisture Deflector is made of durable plastic
and, like other 3M Dynapro components, is designed
to function in rugged conditions.
The Moisture Deflector is not indestructible,
however. Here are a few guidelines to extend its life
and help ensure optimal performance:
n Before starting the unit, make sure that the
temperature is at least 0
n Do not hang anything from the Moisture
Deflector. Doing so may cause it to perform
poorly.
n Before opening the enclosure of the ET 3250/3255
with Moisture Deflector, make sure that the unit is
completely dry. If water has collected on the top of
the enclosure and is not removed before opening
it, moisture might run into the unit.
n When handling the unit, do not grasp it by the
Moisture Deflector.
n If it is necessary to ship the unit for any reason, use
the original packing materials, if possible. Pack
the unit taking care to protect the Moisture
Deflector from damage during shipping.
ºC.
Figure 1: ET 3250/3255 with Moisture Deflector
Brightness-Enhanced (BE) Display
The BE Display option improves the readability of the
display of an ET 3250/3255 in settings where there is
high ambient light (e.g., brightly-lit workplaces).
Figure 2: Dimensional drawings of ET 3250/3255 with
Moisture Deflector
Page 2
n Do not attempt to repair the Moisture Deflector
yourself. Doing so will void the warranty.
If cracks develop in the Moisture Deflector or if it
breaks, contact 3M Touch Systems (see
“Contacting 3M Touch Systems‚” on page 3).
n Do not allow dirt or debris to build up on the
Moisture Deflector.
Mounting the ET 3250/3255 with
Moisture Deflector
The ET 3250/3255 with Moisture Deflector must be
mounted vertically. There must be no more than 10
degrees variance from vertical for the Moisture
Deflector to operate.
As long as this 10 degree rule is observed, it is
possible to mount the ET 3250/3255 with the
Moisture Deflector in any of the ways described in the
Getting Started Guide and User’s Guide (see
“Related documents‚” on page 3).
Opening the enclosure of
ET 3250/3255 with Moisture
Deflector
To open the enclosure of ET 3250/3255 Computers
(for a task such as adding an expansion card or
replacing a TouchSurround underlay) follow these
steps:
1. Put on a grounding strap and touch a grounded
object to discharge any built-up static.
Standards and certifications
The ET 3250/3255 with Moisture Deflector and the
ET 3250/3255 with BE Display meet the following
specifications and standards.
Enclosure
DimensionsImperial16.30" wide
14.00" high
6.60" deep
Metric414.0 mm wide
355.6 mm high
167.6 mm deep
WeightImperial25.0 lb.
Metric11.4 kg
MaterialDie cast aluminum
Display
Viewing area (diagonal)15.0"
Resolution1024 × 768 XGA
TypeActive color TFT
Panel colors (up to)65,536
BacklightsTwo cold cathode
Backlight life
expectancy
Brightness (typical)
fluorescent tubes (CCFT)
50,000 hr
340 cd/m
2
2. Look on the back of the bezel for four security
screws and remove them with the appropriate
screwdriver.
3. Find the latch screw on the top of the enclosure
and use an Allen key or a flat-blade screwdriver
to turn the screw ¼ turn counter-clockwise, or
until you feel the enclosure open.
4. Place the computer face down on the work bench
and open the main enclosure as far as it will go.
5. Have one person support the enclosure in the
open position. Follow the instructions in the
User’s Guide (see “Related documents‚” on
page 3) to complete your task.
Non-operating conditions
The equipment meets these non-operating conditions:
ConditionRange
ShockAcceleration: 30 G
Pulse duration: 11 ms
Vibration5–57 Hz: 0.015" (0.38 mm)
peak displacement
58–2000 Hz:
2.5 G acceleration
Storage
temperature
Maximum
storage altitude
-13°–140°F (-25°–60°C)
40,000 feet (12 192 meters)
6. When your task is finished, close the bezel
assembly, lock the latch screw, and replace the
four security screws. Tighten the screws to a
torque of 10 inch-pounds.
Brightness-Enhanced Display and Moisture Deflector OptionsPage 2
Page 3
Operating conditions
Computers with
hard disk drives
ShockAcceleration: 15 G
Pulse duration: 11 ms
Vibration5–57 Hz: 0.006"
Temperature0°–50°C (32°–122°F)0°–50°C (32°–122°F)
Humidity 50°C (122°F)
Maximum
altitude
(0.15 mm)
peak displacement
58–2000 Hz:
1.0 G acceleration
Note: These temperatures do not take into
account the effect of solar radiation on the unit.
When correctly installed, the equipment meets these
environmental standards:
UL 50, 1992Enclosures for Electrical Equipment,
NEMA 250Electrical Enclosures, Type 4X, Type 12
CSA C22.2
No. 94-M91
IEC 529Protection of Equipment, IP66
enclosure 4X, enclosure 12
Special Purpose Enclosures, enclosure 4X,
enclosure 12
Safety standards
UL 1950
(1995)
UL 3121
CSA C22.2
No. 950–1995
CSA C22.2
No. 1010-1
EN 60950For Information Technology Equipment
EN 61010-1
For Information Technology Equipment
For Process Control Equipment
For Information Technology Equipment
For Process Control Equipment
For Electrical Equipment for
Measurements, Control, and Laboratory
use
Electromagnetic standards
United StatesFCC Part 15, Subpart J, Class A
CanadaICES–0003 Class A
EuropeCE Mark EMC Directives
General Emission Standard Part 2–Industrial
Environment EN 50081–2: 1993, EN 55022,
Class A
Generic Immunity Standard Part 2–Industrial
Environment EN 50082–2: 1995
Product certifications
United StatesUL/CSA NRTL Information Technology
CanadaCSA Information Technology Equipment
EuropeCE Information Technology Equipment
Equipment
Contacting 3M Touch Systems
AreaContact information
USA and
Canada
Outside
USA and
Canada
Tel 800-667-3074
(Call toll-free between 7:30 a.m. and
5:00 p.m., Pacific Standard Time)
Fax 604-521-4629
E-mail
3mdynaprotechsupport@ mmm.com
Web site www.3Mtouch.com
Tel 604-521-3962
Fax 604-521-4629
E-mail
3mdynaprotechsupport@ mmm.com
Web site www.3Mtouch.com
Related documents
For information on all ET 3200 series computers,
refer to one of the following documents, all of which
may be ordered from 3M Touch Systems or
downloaded (www.3Mtouch.com):
n Getting Started Guide
n User’s Guide
n Field Wiring Guide
n Installing the 3M Dynapro ET 3200 Computer for
Hazardous Locations (for ET 3255).
3M Dynapro ET 3250 and ET 3255 ComputersPage 3
Page 4
3M Touch Systems
3M Optical Systems Division
800 Carleton Court
Annacis Island
New Westminster, BC
Canada V3M 6L3
Tel: 604-521-3962
Toll-free: 1-800-667-0374
Fax: 604-521-4629
E-mail: touch@mmm.com
www.3Mtouch.com