Poweramp HED SERIES HYDRAULIC - Manual (Page 16)

14 Manual No. 4111-0027
Sept. 2009
May 2012
14
INSTALLATION
A ramp mount-weld on application is used when adequate
dock steel is securely anchored in the concrete at the dock
edge, but the existing dock height is too low and the dock
leveler must be installed above this height to correct this
situation.
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 7-3/4” below dock level less height
the unit is to be raised to locate bottom of base plate.
This will locate the top of the base plate X” above dock
level.
4. Using a proper lifting device, raise and position the
leveler base plate to marked position. While holding
base plate tight against dock face, tack weld securely
to dock steel on left hand end of leveler. Check right
hand end of base plate, ensure that end is against
dock steel and that the bottom of the base plate is
even with the marks made previously. Tack right hand
end to dock steel. Support unit until final welding is
ready to complete.
5. 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 flush with the
top of the base plate. Tack weld bump blocks to dock
steel.
6. 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”.
7. 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.
8. Using the back edge of the ramp plate as a guide,
groove concrete approximately 3/4” deep by 2” wide,
and should be the entire length of ramp plate.
9. 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.
10. 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.
11. 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 vertically along each end of base plate and
on both inboard and outboard flanges of bump
blocks.
C. Fully plug weld all holes in base plate.
12. Installer must remove all welding slag, and repaint
welded areas.
13. 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.
14. 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.
15. 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 - Ramp Mount - Weld/Bolt On