2.9.1.3.2.
Wall Mounting, Wallboard or Drywall
When mounting the IND780 on wallboard, drywall or a similar surface, the anchor should be sized
according to the recommended bolt size of 1/4" (6 mm). The recommended mounting hardware is:
• Four Toggle Bolts, 1/4" (6 mm), minimum length 2-1/2" to 3" depending on wall thickness,
• Four flat washers, minimum 1/2" (12 mm) outside diameter
Figure 2-13 shows an example of mounting hardware.
1. Drill a hole through each of the measurements/locations marked while preparing for wall
2. Clean the holes with a cloth moistened with water.
3. Unthread each toggle bolt and add a 1/4" (6 mm) inside diameter, flat washer with an outside
4. Push the washers to the inside of the heads of all four bolts.
5. Replace each toggle nut and thread onto each bolt approximately 1"
6. Press the toggle nuts through each opening you created in the wall. You should hear a "click"
7. Tighten the bolts down until you feel the toggle nut contact the inside of the wall. Tighten each
8. Back each bolt out enough to leave space for its head and the flat washer to engage the top
9. Turn the screws, by hand, until they are snug against the mounting plate. Figure 2-14 shows
2.9.1.3.3.
Wall Mounting, Concrete and Cement Blocks
When mounting the IND780 to a cement block, poured concrete or similar wall, the recommended
mounting bolt is:
• UL-listed concrete sleeve anchor, size 1/4" (6 mm), minimum embed 1/2" (12.7 mm),
2-20
METTLER TOLEDO IND780 Division 2 and Zone 2/22 Installation Guide
with a pullout force of 900 lb (450 kg)
Figure 2-13: Sample Mounting Hardware, Wallboard or Drywall
mounting. Use a bit with the same size bit as anchor diameter (typically 5/8" (16 mm)). The
depth of the hole should penetrate the wallboard.
diameter of 1/2" (12 mm).
(25 mm). Insure that the ends of the nut fold toward you when you squeeze them.
sound when each snaps open on the other side.
with a wrench (use a screwdriver for flat/round heads), approximately two or three full turns or
until the toggle nuts are against the base material on the inside of the wall.
center of one of the slotted holes in the mounting brackets (see Figure 2-10 and Figure 2-12).
the nut, washer and bolt installed.
minimum pullout force of 500 lb (266 kg).
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