DLM HED Series, Owner & User Manual

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16
Manual No. 4111-0027
Sept. 2009
May 2012
16
INSTALLATION
A flush mount bolt on application is used when there is
no steel on dock edge, and the dock height is adequate.
Additional steel ramp plate and bolting is required with this
type of installation.
Installation Steps:
1. Remove all existing bumper material and protruding
objects from dock edge. Clean and sweep dock edge
free of debris and flammable chemicals before installing
unit.
2. At chosen location for Edge of Dock leveler, locate the
center of space and mark a point half of the base plate
width to the left and right.
3. At the points marked to each side of center, measure
and mark points 7-1/2” below dock level (for ¼” ramp
plate) to locate position for bottom of base plate. This
position will place the top of the base plate ¼” above
the dock floor. This position will vary with ramp plate
thickness.
4. Mark line connecting these points and position support
angles. Position angles as shown in installation drawing
provided. Mark center of holes in each of the support
angles.
5. At center marks, drill holes 5/8” dia. by 5” deep in
concrete. Install anchor bolts with washers through
support angles into holes in concrete. Tighten bolts until
support angles are secure. Follow anchor manufacturers
installation instructions for proper installation.
6. Using a proper lifting device, raise and position the
leveler base plate to marked position, while resting
on the support angles. While holding base plate tight
against dock face, tack weld securely to support angles.
7. Drill 5/8” dia. by 5” deep holes in concrete through holes
in base plate, and install anchor bolts with washers and
tighten securely.
8. Position bump blocks out approximately 5/8” out from
the edge of the inside flange of the bump block to the
end of the base plate. Position the top of the tread
cover plate on the bump blocks to be ¼” above dock
level. Note that this placement will vary with ramp plate
thickness. Mark centers of holes in bump block flanges.
9. Drill 5/8” dia. by 5” deep holes at center marks.
Reposition bump blocks, insert anchor bolts with
washers and tighten securely to dock face.
10. Place steel ramp plate in position, flush with top
backside of base plate. Mark along full length of back
edge of ramp plate. Slide ramp plate forward over dock
leveler the width of bushing tool, approximately 2”.
11. Place bushing tool on marked line at each end of ramp
to ensure proper alignment at both ends, and tack weld
ramp plate to dock leveler to hold ramp plate in place
while bushing. A Skil Roto Hammer #736 or similar tool
is recommended.
12. Using the back edge of the ramp plate as a guide,
groove concrete approximately 5/8” deep by 2” wide,
and should be the entire length of ramp plate.
13. Break tack welds holding ramp in place, slide ramp
plate back into position with the top of the ramp plate
flush with the top of the base plate. Tack weld each end
and center of ramp plate to base plate.
14. Drill 5/8” dia. by 5” deep holes through ramp plate
at back edge. Install anchor bolts per manufacturers
specifications, and tighten securely. Weld anchor bolt
nuts to ramp plate using a ¼” fillet weld all the way
around the nut. Cut off any portion of the anchor bolt
exposed through the nut, and plug weld around the top
of the nut to the anchor bolt. Ensure the top of the nuts
are well rounded for smooth rollover.
15. Complete welding of tacked parts as follows:
A. Apply continuous weld across top of each bumper
and base plate to ramp plate. Skip welding is
acceptable to prevent warping, but complete weld
must be completed.
B. Weld bottom of base plate to support angles using
a ¼” fillet weld.
16. Installer must remove all welding slag, and repaint
welded areas.
17. Drill 5/8” dia. by 5” deep holes in concrete through holes
in lower cylinder mount, and install anchor bolts with
washers and tighten securely.
18. Field mount control box to inside wall. Field wire control
box and hydraulic power unit per electrical schematic(s)
provided. Read and comply with all local electrical
codes.
19. Before install is complete, installer must make a final
operational check of dock leveler to verify all phases
of install are correct. Installer must complete, sign,
and return the Installation Checklist upon completion.
Reference page 24.
H.E.D. Installation Instructions - Flush Mount - Bolt On