Monoprice 7843 MLA-100-M - Manual (Page 5)

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Installation to Solid Concrete or Cinder Block
Use wall plate ( AA) as template to mark mounting
holes.Drill two 5/16" (8 mm) dia. holes 1.5" (40 mm) deep as
shown in fig. B.1. Insert concerte anchor in holes flush with
wall as shown (right). Place wall plate over anchors and
secure with M6x 60 cross slotted head screw
fasteners.
• When installing the wall mounts on cinder block, verify that you have a minimum of 1-3/8" of actual concrete
thickness in the hole to be used for the concrete anchors. Do not drill into mortar joints! Be sure to mount in a solid
part of the block, generally 1" minimum from the side of the block. Cinder block must meet ASTM C-90 specifications.
It is suggested that a standard electric drill on slow setting is used to drill the hole instead of a hammer drill to avoid
breaking out the back of the hole when entering a void or cavity.
• Concrete must be 2000 psi density minimum. Lighter density concrete may not hold concrete anchor.
• Make sure that the supporting surface will safely support the combined load of the equipment and all attached hard-
ware and components.
WARNING
CU
TA
W
AY
V
IE
W
INCORRECT
concrete
surface
1
3
2
Drill holes and insert anchors
CORRECT
Tighten all fasteners.
wall plate
plaster/
dry wall
concrete wall plate concrete
plaster/
dry wall
• Always attach concrete anchors directl to load-
bearing concrete.
• Never attach concrete anchors to concrete covered
with plaster, drywall, or other finishing material. If
mounting to concrete surfaces covered with a finishing
surface is unavoidable, the finishing surface must be
counterbored as shown below. Be sure concrete
anchors do not pull away from concrete when tighten-
ing screws. If plaster/drywall is thicker than 5/8",
custom fasteners must be supplied by installer.
WARNING
WARNING
B
solid concrete
fig. B.1
cinder
block
y
AA
• Tighten hex head bolts so that wall arm assembly
is firmly attached,but do not overtighten. Overtightening
can damage the screws, greatly reducing their holding
power.
concrete
anchor
concrete
anchor
concrete
anchor
corss slotted head screw
corss slotted head screw