HDS-14LSX / HDS-14LSXE Lifts 19 P/N 5900162 — April 2018 — Rev. F3
About Safety Locks
Safety Locks hold the Runways in place. Once engaged, Safety Locks hold the Runways in place,
even if the power goes out or the Hydraulic Lines break or leak. Your Lift has 15 Safety Locks, spaced
every four inches. Each Post has its own Safety Lock mechanism, for a total of four for the Lift.
Important: Simply raising the Runways does not necessarily engage them on the Safety Locks.
You must back the Runways down onto the Safety Locks to engage them.
⚠ WARNING Safety Locks are dependent on correct installation of the ‘Ladders’. Pay careful
attention when installing the Ladders, thus ensuring correct operation of the Safety
Locks on your Lift.
The Ladders, one per Post, are steel pieces with holes spaced every four inches. As you raise the
Runways, the Safety Locks move into the holes in the Ladder. When you move the Runways back
down a little after passing a Safety Lock, the Safety Lock engages. Once they are engaged, Safety
Locks stay engaged until you are ready to lower the Runways. Even if the power goes out or one of
the Hydraulic Lines breaks or leaks, the engaged Safety Locks hold the Runways in place.
⚠ WARNING Always leave the Runways either fully lowered or engaged on their Safety Locks.
When you engage the Safety Locks at a desired height, check to make sure that all
four Safety Locks (one per Post) are engaged.
So how do the Runways come down if the Safety Locks are engaged? To lower the Runways, you
raise them a few inches (to get them off the Safety Locks), then
the pushbutton
on the Pushbutton Air Valve. While you hold down the pushbutton, the Safety Locks are moved away
from the Ladders; they cannot engage, which allows the Runways to be lowered.
Out of an abundance of caution, your Lift has a second, independent Safety Lock system called the
Slack Safety. In total, your Lift has two Safety systems:
• Safety Locks: The primary system to hold up the Runways on your Lift are the Safety Locks.
When you move the Runways up, you can hear clicks as the Safety Locks go into the holes in the
Ladders. When you want to keep the Runways at a certain height, you go slightly past the height
you want, then back the Safety Locks down in to the holes in the Ladders, which engages them.
• Slack Safety: The Slack Safeties are next to the Safety Locks on the ends of the Crosstube
Gussets. They are different from the Safety Locks in that when the Cables are taut (which they are
during normal operation), they hold the Slack Safeties away from the Ladder so that the Slack
Safeties cannot engage. However, if a Cable were to break (which very rarely happens), the Slack
Safety for the broken Cable immediately engages, preventing the Runways from falling.
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