Safe Servicing - Southworth LS Serie El Manual Del Propietario

SAFE SERVICING OF THE LIFT
WARNING !
Only authorized personnel should perform
inspection or maintenance and service pro-
cedures. Unauthorized personnel attempting
these procedures do so at the risk of severe
injury or death.
DANGER !
Failure to properly adhere to lift blocking
procedures is to risk the sudden and uncon-
trolled descent of the lift during maintenance
or inspection. A falling lift can cause severe
injury or death.
This procedure describes the only factory-approved
method of working under a lift. Follow these instruc-
tions EVERY time you plan to reach or crawl beneath
the lift to perform service or maintenance – no matter
how momentary that might be.
If the factory-provided maintenance device is dam-
aged or missing, stop immediately and consult the fac-
tory for assistance. The manufacturer is not liable for
your failure to use the approved maintenance device(s)
and procedures that have been provided.
1. Any load must be removed from the lift prior to engag-
ing the maintenance device(s). These devices are
designed to support an unloaded lift only. Failure to
remove the load from the lift prior to blocking could
cause the failure of the maintenance device(s) and
allow the lift to fall unexpectedly. This can result in
personal injury or death, or permanent damage to
the maintenance device(s) and/or the lift.
2. Raise the lift to its fully raised position. If you do not,
the maintenance device(s) may not be able to be
placed properly in its/their designed blocking posi-
tion. Please note that this may require electrically
by-passing the up limit switch, ensure that doing so
will not operate the up limit switch beyond its physical
limits. This should only be done by qualified mainte-
nance personnel. If electrical by-pass is not possible
and the up limit switch needs to be moved in order
to place the unit on the maintenance devices then
the lift will need to be supported before working on
the switch, support the top and leg set with a crane,
fork truck, or blocking from floor to the table top.
Ensure that the switch is properly set and functions
once complete.
3. Remove the maintenance device(s) from its/their
storage location and place it/them into the engaged
Note: In some cases the upper travel limit
switch may need to be overridden to utilize
the maintenance devices
Rotate the
maintenance
devices
into position
Working
position
Storage
position
position as shown in Figure 1. Note: For LST models ensure
all supplied maintenance devices are utilized.
4. Lower the lift until it makes complete contact with the mainte-
nance device(s). Re-check to ensure that all provided devices
are fully and securely engaged. If the device(s) is/are not fully
engaged the lift could fall unexpectedly, resulting in permanent
damage to the device(s) or the lift.
If for any reason you are unable to lower the lift completely
onto the maintenance device(s), stop immediately and
consult the factory. Failure to properly use the factory
approved maintenance device(s) could result in severe
injury or death.
5. (For single-acting hydraulic, and pneumatic lifts) Once the
maintenance device(s) is/are properly and securely engaged,
continue to press the down button, valve or switch for an ad-
ditional 5-10 seconds to relieve all pressure in the operating
system
Failure to relieve operating system pressure could result in
the sudden and unexpected release of high pressure fluids
(or air) during maintenance and/or repair of the lift and result
in severe injury or death.
6. Follow OSHA electrical lock-out/tag-out procedures. Disconnect
and tag all electrical and/or other power sources to prevent an
unplanned or unexpected actuation of the lift.
7. Once inspection or work is complete, reverse the performance
of the steps above to raise the lift off the maintenance device(s)
and place the device(s) back into its/their designated storage
position(s).
HIGH VOLTAGE ! – Disconnect and/or lock out the electri-
cal supply to the power unit prior to any installation or
maintenance being performed.
Figure 1:

Safe Servicing

of Lift
Working
position
DANGER !
WARNING !
DANGER !
Southworth Owner's Manual -- LS Series
7