If The Lift Will Not Raise; If The Lift Fails To Lower - Presto Lifts ECOA DXS Series Installation, Operation And Service Manual

If the lift will not raise:

Do not continue to hold the "up" button for more
than 2 or 3 seconds. You may damage the pump.
WARNING!
Do not change the relief valve setting. This valve
has been included for the protection of workers
who install, use, or service the lift. If it is ever
necessary to repair or reset the valve, contact
Presto/ECOA for instructions.
WARNING!
It maybe necessary to electrically by-pass the up
limit switch to place the lift on the chocks. Ensure
that doing so will not operate the switch beyond
its arms physical limits. This needs to be done by
qualified maintenance personnel. If electrical by-
pass is not possible the up limit switch needs to be
moved in order to place the unit on the maintenance
devices, then the lift platform and legs will need to be
supported before working on the switch, support the
top and leg sets with a crane, fork truck or blocking
from the floor to table top. Ensure switch is properly
FIGURE 2:
Pinch Points for Typical Scissor Lift.
NOTICE
reinstalled any electrical by-pass is removed before
operating the lift. Any final adjustment of limit
switch needs to occur with the legset and platform
supported while working under the lift. If you do by-
pass or remove the switch, when the lift platform
moves up, it may not stop at the correct point. If the
platform rises above the normal stopping point, the
frame of the unit may be damaged. People working
nearby may be hurt.
If cavitation is allowed to continue, the pump may be
damaged, and may have to be replaced.
If the lift elevates, but fails to hold a load:
Failure to insert the maintenance devices may
result in damage to the lift and severe personal
injury!

If the lift fails to lower:

Failure to insert the maintenance devices may
result in damage to the lift and severe personal
injury!
Do not try to adjust the flow control while pressing
the "down" button. If you try this, the lift table may
drop suddenly, and you may be hurt.
Owner's Manual Presto DXS Series - ECOA CDL & CLT Series
NOTICE
WARNING!
WARNING!
DANGER!
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