Chapter 4 – Safety Devices
16 S2255RT S2755RT - 15286-1
Drive (reverse)
The DRIVE (reverse) alarm alerts people that the
S2255RT / S2755RT is traveling backwards along the
ground. This alarm beeps twice as fast as the DRIVE
(forward) alarm.
Drive (forward)
The DRIVE forward alarm alerts people that the
S2255RT / S2755RT is traveling forward along the
ground. The alarm beeps half as fast as the DRIVE
(reverse) alarm.
Load Sensing System
As soon as the scissor stack rises from its stowed po-
sition the overload protection system becomes active.
Ÿ If 90% of rated capacity is reached in the platform
the overload light will illuminate.
This is a warning to the operator that the platform is
reaching rated capacity. Normal function will remain and
the machine can continue to be used.
Ÿ If 100% of the rated capacity is reached in the plat-
form the overload light will continue to be illuminated
and an alarm will sound.
This is a warning to the operator that rated capacity has
been reached and the platform load must be reduced.
Normal function will remain to allow the platform to be
positioned to remove some load from the platform.
Note
The machine should not be operated continuously with
the overload alarm sounding.
Ÿ if 110% of rated capacity is reached in the platform
the overload light will continue to be illuminated and
an alarm will continue to sound and all functions will
be disabled.
The operator must remove load from the platform.
Normal function will resume once the platform load has
been reduced below 110% continuously for at least two
(2) seconds.
Figure 4.4 – Platform Overload Light
Level Sensor
The level sensor alarm warns the S2255RT / S2755RT
operator that the machine is not level.
When you hear this alarm, immediately lower the plat-
form completely down. When the platform is completely
down, determine and correct the cause of the tilt before
raising the platform again.
Note
While the alarm is sounding it is not possible to drive the
S2255RT/ S2755RT nor raise the platform.
Dual Tilt Limits
The machine is equipped with Dual tilt limits; this gives
the machine a greater tilt limit at low scissor elevations
and a smaller tilt limit at higher scissor elevations. The
Dual tilt limit is applicable on both wheels and stabi-
lisers. The change in tilt limit is automatic and no user
intervention is needed.
The Auto Level function will aim to bring the platform
as close to level as possible regardless of the tilt limit.
When the Auto Level function fi nishes if the level is within
the tilt limits the controller will turn on the lift enable light.
If the scissor stack is raised from a lower elevation
through the changeover height and the tilt would be
outside the tighter tilt limits the unit will automatically
stop lifting further and sound the tilt alarm. If this occurs
stow the machine and re-level it.
Refer to the specifi cation sections or the serial plate for
the specifi c tilt limits.
Primary Fall Restraint System
Figure 4.5 – Fall Restraint
The handrails, including mid-rail and toe board com-
bined with the gate, form a Fall Restraint System.
The System Prevents the operator from reaching the Fall
Hazard. Ensure that all handrails are located correctly
with each other and that all pins and bolts are in place.
If any part of the Fall Restraint System is not in place the
System is compromised and the operator must review
the Risk and Hazard analysis and determine ways to
provide adequate fall protection e.g. the use of Fall
Restraint Harnesses, Lanyards and Anchors.
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