PVM 220 • Installation Guide (Continued)
2
Installation
Step 1 — Remove device mounting plate from the access door.
a.
Open the access door and remove the two screws* that are located in
the bottom corners of the plate (left and right sides), near the door
latches and door tether "T".
NOTES:
•
*Door screws used are either Phillips screws or
thumbscrews. Overall procedure is the same.
•
Do not remove any of the screws located below the hinges.
b.
Swing the bottom of the plate up to separate it from the door frame,
then slide the plate to the right until it becomes free of the hinge pins
on the door frame.
Retain the device mounting plate for later use
(see
on page 4).
Step 2 — Remove ceiling tile and install suspension cables.
If installing with a threaded rod, see Step 3,
on
next page.
a.
At the location where the PVM 220 is to be installed, remove the ceiling
tile and mark the T-grid for that tile then remove the adjacent tiles to
make working on the grid easier.
b.
At an approximate angle of 10 degrees out from each corner of where
the PVM 220 will be installed, mark and drill four holes in the structural
ceiling for the suspension cable anchors.
c.
Screw a lag eye bolt (or an appropriate anchor) into each hole.
d.
Thread the looped end of the suspension cable though the bolt eyehole,
pass the rest of the cable through the loop and tighten.
Allow each cable to hang down.
Step 3 —Suspend the main PVM 220 enclosure from the ceiling.
a.
Lift and place the PVM 220 enclosure carefully onto the T-grid so
that it sits squarely on the grid.
b.
Holding a cable lock, press the locking pin down (following arrow
directions) and pass the loose end of one the cables down through
the large hole in the lock. Ensure that about 12-15 inches of cable
has exited the bottom of the lock.
c.
Pass the loose end of the cable directly through the corner hole
on the PVM 220 enclosure and then back up through the other
large hole in the lock. Ensure that at least six inches of cable
comes out through the top of the lock.
d.
Repeat for each corner.
e.
Adjust the cable tension through all locks, making each cable taut
without lifting the PVM 220 off the T-grid.
Thread the cable down through
the cable lock, through the hole
on the frame of the enclosure and
back up through the lock.
Cable Lock
Locking Pin
Figure 2.
Remove the mounting plate from the door.
Figure 3.
Tie the cable to the ceiling anchor.
Remove this screw* on
the right and left sides
of the mounting plate.
Swing the mounting plate out from the door frame
and slide the plate to the right, off the hinge pins.
Bottom of Door
(inside right
corner view)
Door Tether “T”
*Screws used are either
Phillips or thumbscrews.
Î
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Figure 4.
Secure the PVM 220 to the ceiling with
cable on all corners.
