CHIEF 25MWR Service manual

Large Flat Panel
Single Arm Wall Mount, Model 25MWR ™
The 25-MWR is wall-mounted,rugged, versatile, and
installer-friendly. The 25-MWR is compatible with the
midsized (200 x 200mm) and 25-MSB interfaces in which
a display can be mounted in either the landscape or
portrait position.
The single arm on the 25-MWR:
• Extends from the wall 24-7/8” in length
• Pivots up to 90º left or right of center
The standard 25-MWR is shipped with the support post
for the single arm centered in the mount. The support
post can be moved laterally right or left of center to
readily accommodate sites with limited wall space.
The tilt range for the display is 5º up and 15º down.
The 25-MWR was designed for fast installation. After
drawing the plumb line and installing the two top lag
bolts into the dual wall studs, the installer hangs the
MWR on its top bracket and installs two lag bolts in the
bottom bracket. Next, the installer mounts the display
and connects the power/audio/video cables, which are
diverted into the built-in path in the flexible single arm.
After making the lateral, rotational, and tilt adjust-
ments, the installation process is complete.
BEFORE YOU BEGIN
•Caution: To prevent damage to the 25-MWR, which could affect or void the Factory warranty, and to the equip-
ment that will be attached to it, thoroughly study all instructions and illustrations before you begin the
installation. Pay particular attention to the “Important Warnings and Cautions” on Page 2.
• The combined weight of the components installed on the 25-MWR must not exceed 125 lbs. (56.7kg).
•The 25-MWR wall mount must be installed on dual wall studs or supporting framework. The wall to which the 25-MWR is
anchored must be capable of supporting five times the total weight of the mount and all attached equipment.
• If you have any questions about this installation, contact us at 1-800-888-6024.
INSTALLATION INSTRUCTIONS

Installation Instructions
2
IMPORTANT WARNINGS AND CAUTIONS!
WARNING: A WARNING alerts you to the possibility of serious injury or death if you do not follow the instructions.
CAUTION: ACAUTION alerts you to the possibility of damage or destruction of equipment if you do not follow the cor-
responding instructions.
•WARNING: Improper installation can result in serious personal injury! Make sure that the structural members can
support a redundant weight factor five times the total weight of the equipment. If not, reinforce the
structure before installing the 25-MWR.
•WARNING: Be aware also of the potential for personal injury or damage to the unit if it is not adequately mounted.
•WARNING: The installer is responsible for verifying that the wall to which the 25-MWR is anchored will safely support
the combined load of all attached components or other equipment.
•WARNING: The weight of the display placed on the 25-MWR must not exceed 125 lbs. (56.7kg), the maximum load
capacity of the 25-MWR.
•WARNING: Watch for pinch points. Do not put your fingers between movable parts.
•WARNING: Make sure the mount and brackets are correctly oriented.
•WARNING: Make sure the flag securing the display is completely lowered at all times except when removing or
installing the display.
•CAUTION: Check the unit for shipping damage before you begin the installation.
NOTE: Hardware for attaching this unit to the wall is not supplied.
CONTENTS
IMPORTANT WARNINGS AND CAUTIONS! ..................................... 2
DIMENSIONAL DRAWING ................................................................. 3
INSPECT THE UNIT BEFORE INSTALLING ..................................... 4
MWR SPECIFICATIONS .................................................................... 4
INTERFACES ..................................................................................... 4
TOOLS REQUIRED FOR INSTALLATION ......................................... 4
PARTS LIST ....................................................................................... 4
MWR INSTALLATION ........................................................................ 5
Locate Wood Studs 16” Apart on Center ...................................... 5
Mount the 25MWR ........................................................................ 6
MOUNT THE DISPLAY ...................................................................... 7
CABLE MANAGEMENT ..................................................................... 8
TENSION ADJUSTMENTS ................................................................ 9
Vertical Tilt Tension Adjustment ................................................... 9
Lateral Tilt Tension Adjustment .................................................... 9
Rotational Tilt Tension Adjustment ............................................... 9
SWING ARM ADJUSTMENTS ........................................................... 10
Adjusting the Swing Arm Off Center ............................................. 10
Reconfiguring the Swing Arm to the Left or Right of Center ......... 11
REMOVE THE DISPLAY .................................................................... 11

3
Installation Instructions
DIMENSIONAL DRAWING

Installation Instructions
4
INSPECT THE UNIT BEFORE
INSTALLING
WARNING: Watch for pinch points. Do not put your fin-
gers between movable parts.
1.Carefully inspect the 25-MWR for shipping damage. If any
damage is apparent, call your carrier claims agent and
do not continue with the installation until the carrier has
reviewed the damage.
NOTE: Read all instructions before starting installation.
2. Lay out components to ensure you have all the required
parts before proceeding. See “DIMENSIONAL DRAW-
ING” on page 3.
MWR SPECIFICATIONS
Table 1 on page 4 provides the 25-MWR specificiations.
*Dimension does not include the MSB interface bracket.
INTERFACES
Table 2 on page 4 provides the applicable MWR interfaces.
TOOLS REQUIRED FOR
INSTALLATION
• Allen wrench set
• Drill and bit set
• Wrench set
NOTE:Other tools may be required depending on the
method of installation.
PARTS LIST
Unpack the carton and verify the contents listed in Table 3 on
page 4. If you are missing any of the listed parts, contact
Customer Service at: 1-800-888-6024.
Table 1: 25-MWR Specifications
Model Max Support Weight
25-MWR
Extended
from Wall
25-MWR 100 lbs. (56.7kg)24-7/8” *
Table 2: 25-MWR Interfaces
Model Interfaces
25-MWR 200mm x 200mm Mid Sized Brackets (MSB)
Table 3: Parts List
REF DESCRIPTION QTY
10 25-MWR Wall Mount 1
20 Cover Plates 2
30 End Caps 4
40 Tiewraps 12
— Lag Bolts (required, not supplied) 4
— Flat Washers (required, not supplied) 4

5
Installation Instructions
MWR INSTALLATION
WARNING: Improper installation can result in serious
personal injury!
WARNING: It is the responsibility of the installer to verify
that the wall to which the 25-MWR is anchored
will safely support five times the combined
load of all attached components and equip-
ment. If not, reinforce the structure before
installing the 25-MWR.
Locate Wood Studs 16” Apart on Center
1. Determine the exact mounting location prior to installa-
tion, considering screen size and the unit’s total swing
arm radius. Keep in mind that the 25-MWR must be
mounted to wood studs that are 16” apart on center.
NOTE:Mount the 25-MWR between parallel wall studs
or other supporting framework that is vertical
or horizontal.
2. Using a stud sensor, locate the two wood studs where
you will mount the 25-MWR.
3. Draw a level plumb line to indicate the desired height of
the top mounting bracket.
4.With an assistant, lift and hold the 25-MWR against wall.
Use a pencil, awl, or small nail to mark the mounting
holes where two pilot holes will be drilled into the cen-
ter of the wood studs. Make sure the mounting holes are
level.
5.With an assistant, lay the 25-MWR down on the floor.
6. Drill two pilot holes where the mounting holes were
marked for anchoring the top bracket on the 25-MWR. See
Figure 1.
NOTE: Do not tighten the lag bolts down at this time.
Leave enough space between the wall and lag
bolts to hang the 25-MWR.
NOTE: Lag bolts and flat washers are not supplied.
7. Install two lag bolts and two flat washers in the pilot
holes drilled in step 6.
Figure 1. Two Wood Studs 16” Apart On Center
16”
Wood Studs
Pilot Holes
Wall

Installation Instructions
6
1. Mount the top bracket on the 25 MWR, as follows:
WARNING: Improper installation can result in serious
personal injury!
a.With an assistant, lift and hang the 25 MWR on the
two lag bolts and washers previously installed on
the wall. See Figure 2.
NOTE: Make sure washers are installed in front of the
top bracket, not behind the bracket.
b.Slide the 25 MWR into the desired position on the
wall and tighten the two lag bolts.
2.Mount the bottom bracket on the 25 MWR, as follows:
a. Mark the two mounting holes in the bottom
mounting bracket (see Figure 3). Make sure to
align the holes parallel to the holes drilled in the
top bracket.
b. Drill two pilot holes in the wall studs, as follows:
• If using 5/16” lag bolts, use a 7/32” drill bit.
• If using 3/8” lag bolts, use a 9/32” drill bit.
c. Install two lag bolts and two washers into the
pilot holes.
• If you used a 7/32” drill bit, use 5/16” lag bolts
(40) and 5/16” washers (50).
• If you used a 9/32” drill bit, use 3/8” lag bolts
(not supplied) and 3/8” washers (not supplied).
d. Tighten the two lag bolts.
Use Lag Bolts and Washers to .
Figure 3. Mount Bottom Bracket on Wall
Mount the 25-MWR
Mount (Hang) the 25-MWR on Lag Bolts
Figure 2. Mount 25-MWR on Lag Bolts
Fasten 25-MWR to the Wall

Installation Instructions
7
MOUNT THE DISPLAY
1. Make sure power is not supplied (turned off) to the display
and the locking device is in the unlocked (down) position
(see Figure 4) before attempting to mount the display.
2. Following the instructions for mounting the 25 MSB interface
bracket of your specific plasma display panel, install the
mounting bracket on your plasma display panel.
WARNING: Watch for pinch points. Do not put your fin-
gers between movable parts.
3.With an assistant, slide the display down over the 25 MWR.
Make sure buttons of 25 MSB interface bracket fully engage
all teardrop slots of the 25 MWR.
WARNING: Make sure the locking device securing the dis-
play is completely engaged at all times except
when removing or installing the display. The
locking device must be completely engaged
during installation/removal of cables when the
display is mounted.
NOTE: A padlock may be used on the locking device for
increased security.
5. Connect and secure power/audio/video cables, making
sure to leave sufficient slack to allow for movement of the
swing arms.
Figure 4. Locking Device
Lock
Unlock
25 MSB
Teardrop
Slot
(Typical)
Bracket
Interface

8
Installation Instructions
CABLE MANAGEMENT
WARNING: Make sure your cables do not run through
a pinch point.
1. Route power/audio/video cables through the cable channel
in top arm (see Figure 5), allowing sufficient slack in
cables for extension and avoiding pinch points, and secure
cables using two clips and two tiewraps (40, not shown).
2. Route power/audio/video cables along bottom arm (see
Figure 6), using tiewraps (40, not shown) to secure cables
to each arm, and through cable channel.
CAUTION: To prevent equipment damage, do not route
cables through holes in the display mounting
plate.
3. Route power/audio/video cables to an open area behind
the mounting plate (not shown). Leave a sufficient amount
of slack in cables to allow for connection and extension
where needed.
Cables
Tiewraps
Top Cable
Management Channel
Figure 5. Cable Management Channel (Top)
Management Channel
Bottom Cable
Figure 6. Cable Management Channel (Bottom)

Installation Instructions
9
TENSION ADJUSTMENTS
Vertical Tilt Tension Adjustment
1. Using 5/32” Allen wrench, slightly tighten or loosen two
screws, one on each side, equally (see Figure 7).
2. With display mounted, check for desired vertical tilt ten-
sion.
3. Repeat Step 1 and Step 2 until desired vertical tilt tension
is obtained.
Lateral Tilt Tension Adjustment
CAUTION: Overtightening lateral adjustment will cause
excessive wear and may distort adjustment
components.
1. Using a 9/16” wrench, slightly tighten or loosen lateral tilt
tension adjustment nut (see Figure 8).
2. Mount the display and check for desired tilt tension.
3. Repeat Steps 1 and 2 until desired tilt tension is obtained.
Rotational Tilt Tension Adjustment
1. If necessary, loosen or tighten bottom rotational tilt
tension adjustment nut (see Figure 9).
2. Mount the display and check for desired rotational tilt ten-
sion.
3. Repeat Steps 1 and 2 until desired rotational tilt tension is
obtained.
Adjustment
Nut
Vertical Tilt
Adj. Screw
Figure 7. Vertical Tilt
Adjustment Nut
Lateral Tilt
Figure 8. Lateral Tilt
Figure 9. Rotational Adjustment
Rotational
Adjustment Nut

10
Installation Instructions
SWING ARM ADJUSTMENTS
The single swing arm, which is jointed, is shipped installed in
the center of the top and bottom mounting brackets, which is
the standard mounting configuration.
The top and bottom mounting brackets have slotted holes,
allowing for lateral adjustment of the swing arm.
After the top and bottom mounting brackets have been
installed between two wood studs 16” on center, the swing arm
can be adjusted or moved off center, depending on the location
of the mount, the size of the display, and the lateral movement
needed to rotate the display.
The swing arm can be adjusted, as follows:
•Adjusting the Swing Arm Off-Center
With some disassembly and reassembly, you can adjust the
swing arm up to 1-inch to the left of center or up to 1-inch
to the right of center.
•Reconfiguring the Swing Arm Left of Center
With some disassembly and reassembly required, you can
move the swing arms to the left of center by reconfiguring
the mount. Use the first and third slotted holes in the top
and bottom mounting brackets.
•Reconfiguring the Swing Arm Right of Center
With some disassembly and reassembly, you can move the
swing arms to the right of center by reconfiguring the
mount. Use the third and fifth slotted holes in the top and
bottom mounting brackets.
Adjusting the Swing Arm Off Center
Perform this procedure to adjust the adjust the swing arm up to
1-inch to the left of center or up to 1-inch to the right of center.
1. Remove the display from the mount.
2. Remove four bolts (two on the top and two on the bottom)
securing the swing arm assembly to the top and bottom
mounting brackets (see Figure 12).
3. Move the swing arm assembly to desired location.
• For left of center, use the mounting hole slots shown
in Figure 12.
• For right of center, use the mounting hole slots shown
in Figure 12.
4. Reinstall four bolts (two on the top and two on the bottom)
on the top and bottom mounting brackets.
5. Tighten the bolts.
6. Install the display on the mount.
Figure 12. Swing Arm Adjustment –
Slightly Off Center
Top B o lts
Mounting Holes Mounting Holes
Left of Center Right of Center

Installation Instructions
11
Reconfiguring the Swing Arm
to the Left or Right of Center
Perform this procedure to change of the single swing arm
mount configuration.
1. Remove the display from the mount.
2. Remove four bolts (two on the top and two on the bottom)
securing the swing arm assembly to the top and bottom
mounting brackets (see Figure 13).
WARNING: The next step will release the arm assembly
from the mount. The arms and plate may fall
if you are not careful.
3. Move the swing arm assembly to desired location.
• For left of center, see Figure 13.
• For right of center, see Figure 14.
4. Install retaining pin assemblies (one top and one bottom)
and secure using two bolts (one top and one bottom).
5. Install four bolts (two on the top and two on the bottom) to
secure the swing arm assembly to the top and bottom
mounting brackets (see Figure 13).
6. Tighten the bolts.
7. Install the display on the mount.
REMOVE THE DISPLAY
Perform this procedure when maintenance is required.
WARNING: Plasma screens are heavy and extremely
fragile. Exercise caution when removing or
installing the plasma screen to avoid serious
injury.
1. Disconnect power/audio/video cables.
2. Release the locking device (see Figure 4).
3.Using two people, lift the display up from the 25-MWR.
Top B o l ts
Figure 13. Adjust Swing Arm – Left of Center
Figure 14. Adjust Swing Arm – Right of Center
To p B ol t s