Bretford MDMLAP20NR Manual

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Side 1/2
The “Power Manager” has two LED indicator lights that let you know what it is happening
The left light is Amber and the right one is Red
Amber
Red
1.  When the power button is switched to the “On” position, both
indicator lights will light up for approximately 2 seconds.
2.  Both lights will then turn off while the “Power Manager” evaluates
the power required to charge the first set of devices.
3.  The Amber light will come on and stay lit indicating that the “Power
Manager” is now in “Smart Charge” mode. This means that laptops
will be charged in groups, three minutes at a time.
4.  Once the power needed to charge all of the devices in the cart
reaches a level that will not trip the circuit, the “Power Manager”
enters “All Charge” mode and both lights will be off. All devices are
now charging.
1.  If the Amber light displays single blinks, it means the current required to power the auxiliary outlet is too high. Unplugging whatever
is in the auxiliary outlet should allow the “Power Manager” to resume charging the devices.
2.  If both the Amber and Red lights start to blink, it means one set of devices is drawing too much current and the “Power Manager”
needs to be reset by turning it off and back on. If the problem persists there may be a faulty device that needs to be removed.
3.  If the Amber light displays double blinks, the internal temperature of the cart is too high. Open the doors of the cart and/or move the
cart to a cooler room. The cart should cool down without having to turn off the “Power Manager”
MDMLAP20NR
20 Laptop Computers in Vertical Slots
Maximize your Tech Investment
The MDM Network Ready Laptop Cart provides
you the infrastructure to secure, charge and
update 20 computers.
The cart ships fully assembled with:
•  21 Ethernet cables pre-wired and ready to
plug into your laptops
•  Dedicated space for your 19” rack-mounted
network switch
•  Two thermally-controlled fans to dissipate
heat while your computers are updating
Save time and money by sending patches,
updates and content to all of the devices in the
cart at once.
Adding your Network Switch
Upon Delivery
The MDMLAP20NR Laptop Cart has
space in the top for the addition of your
network switch. Below are step by step
instructions for installation of the
network switch.
•  Open the rear door of the cart and remove the 2
Phillips screws from upper right and upper left
corners on rear side of cart.
•  Lift off top cover.
•  Set (purchaser provided) rack mounted network
switch on provided shelf and attach with 4
Phillips rack mount screws.
•  The MDM Laptop Cart features the new and improved Power Manager, which is designed to continuously charge even
the most power hungry laptops using only one wall outlet.
•  The system uses a “Round Robin” charging cycle that constantly evaluates the demand for power and allows each
electrical strip time to cool down. Cooler batteries last longer, and extended battery life saves you money.
•  When the total draw of the devices allows it, the Network Switch will turn on automatically and receive continuous power
until the unit is powered off.
•  Two Heat Sensors inside the cart communicate the internal temperature to the Power Manager. When it exceeds 77°F
the fans will turn on and if it gets above 100°F the system will stop sending power until the cart cools down.
Power Management System … The “Power Manager”
11000 Seymour Avenue Franklin Park, IL 60131 USA 800 521 9614
www.bretford.com
•  Lock the two locking wheel casters to
prevent the unit from moving.
•  Open front door of the cart and remove the 2
Phillips screws from upper right and upper
left corners on front side of cart, with narrow
handled screwdriver. (see pictures below)
•  If preferred, connect the LAN cables to the
switch before replacing top cover.
•  Plug your network switch into the dedicated
outlet located on the rear of the power
manager.
•  Replace the top cover and screw in the 4
Phillips screws in front and back corners.
Cut Here - Finished size = 16”W x 11”H - Folded three times, like a map
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Please Note: It is recommended that
nothing be plugged into the Auxiliary
outlet while charging
What is the “Power Manager” doing?
Basic Troubleshooting
Part #: 031-9498 10/08/2012
MDM Network Ready
Laptop Cart
USER GUIDE
®
Directional Locking
Casters can be locked as a
rigid caster for easy rolling down
the hallway, or unlocked to swivel
for easily getting into tight spaces.
Security provided by dual-
locking handles built right into
the steel constructed doors
Front View
Two Fans in the front of
the cart vacate heat, keeping
the internal temperature of the
cart within recommended
operating levels.
Removable Cord
Management panels let IT
Coordinator wrap cable sets at a desk.
No more kneeling or bending behind
the cart organizing the power cords.
Ethernet Cables
pre-wired in the rear of
the cart.
Back View
MDM Network Ready
Laptop Cart
USER GUIDE
11000 Seymour Avenue Franklin Park, IL 60131 USA 800 521 9614
www.bretford.com
MDMLAP20NR
20 Laptop Computers in Vertical Slots
How Does the Network Ready Cart Manage Heat?
When computers are charging, the source of heat is the adapter/transformer.
However, when they are receiving updates from your network, the computers must
be powered on meaning the source of the heat inside the cart is the computers’
ventilating themselves to keep their internal batteries cool. The air emitted from each
computer is very hot and with all 20 laptops ventilating at once, the internal
temperature of the cart rises dramatically while they are updating.
Computer manufacturers recommend a safe temperature range of 50°F to 95 °F for
operating laptops. To keep the internal temperature of the cart within these limits,
the MDM Network Ready Laptop Cart features ventilation on the side panels and is
equipped with two thermally-controlled fans that turn on when the temperature
inside the cart exceeds 77°F. Bretford has conducted extensive testing that
confirms the effectiveness of these features.
ELECTRICAL: Avoid sparks. Avoid arcing Always turn OFF the power to the cart before plugging IN or OUT!
ELECTRICAL: For Safety Purposes, make sure all electrical components do not exceed the the maximum load rating of 12 amps.
ELECTRICAL: Risk of electrical shock. Do not plug the power cord into another extension cord or relocatable power tap.
ELECTRICAL: The power strips inside the laptop cart are only for charging laptop computers. Any other use may cause an
overload for the Power Management System, causing the “Power Manager” to shutdown. To reset the “Power Manager”, turn off the
main power switch, unplug the non-laptop device, then turn the main switch back on.
CAUTION: Be sure each laptop computer is turned OFF before plugging into the cart..
CAUTION: Do Not block the ventilation holes or fans on the cart. Proper air flow is required for safe operation of equipment.
CAUTION: Cart with computers should be kept in a room with a maximum temperature not to exceed 77° F or 25° C.
CAUTION: Maximum weight of accessories on top of cabinet is 25 pounds.
CAUTION: Avoid loading equipment in the cart in a uneven fashion. Uneven weight distribution could cause a hazardous condition.
Laser-Cut ID #’s in
front & back keep computers
and their cable sets in the right
place and make it easy to
identify if something is
missing.
The “Desktop” Cord Management system allows you
to organize the computer cord sets while seated at a
table. No more bending or kneeling behind the cart!!
Simply remove the four steel panels, secure the
adapters with the Velcro straps, and re-hang them in
the rear of the cart.
Cable Management … Done at your Desk!
Power Manager
Uses the power from a
single wall outlet to charge
and update laptops safely
and efficiently.
When the Power Manager has moved through all of power modes described in the blue
box on the reverse side of this guide, the power required for all six power strips will be
below 10 amps and the network switch will be powered on. Once on, the network switch
will ALWAYS receive power until the Power Manager is manually turned off.
If the combined draw of the power strips and network switch exceeds 10 amps, the cart will
revert to “Smart Charge” mode. The network switch will continue to get power but some
computers will be running on battery power every three minutes as the Power Manager
redistributes the current.
Note that if the computers are updated remotely, they must be receiving AC power to
receive a “wake up” packet. Therefore, when using Wake-On LAN we recommend the
computers be “awakened” in stages to prevent the Power Manager from reverting to
“Smart Charge” mode. For example, the “wake-up” packet would be sent to the computers
in slots 1-5; once they are on, the packet would be sent to the computers in slots 6-10 and
so on, until all 20 devices are powered on.
Since computers can receive updates while operating on battery power, the update can
now be sent to all 20 of them at once. If the computers are powered on manually, updates
can be sent to the entire cart simultaneously.
Dedicated Space
for your 19” rack-mounted
network switch.
For Best Results When Using the Networking Functionality,
We Recommend that All of the Computers in the Cart be
Fully Charged
Networking with the Power Manager
The cable management channel includes
a cut-out designed to hold the Ethernet
cable and power cord in place. Place the
power cord on top of the Ethernet cable and
loop it into the “notch” and over the hook at
the front.
Be sure to leave enough slack at both
ends of the power cord to be able to
plug one end into the power strip and
pass the other end through the divider
panel to the front of its assigned
storage slot. Use the Laser Cut ID
Numbers to quickly match computers
with their cord sets.
The MDM Network Ready Laptop Cart ships with 20 Ethernet cables pre-wired
in the rear of the cart. One end will be routed to the dedicated space for your
network switch and the other end will be threaded through the divider panel into
the cable management channel in the front section of the cart.
Network updates sent to computers using the MDMLAP20NR are the responsibility of
your IT Department. The information above explains how the Power Manager will
potentially affect these efforts and all recommendations are based on results of
Bretford’s internal tests.
®

Produkt Specifikationer

Mærke: Bretford
Kategori: Ikke kategoriseret
Model: MDMLAP20NR

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