Low level loading, Class1 – Class1 Digital Aerial Warning Display User Manual
Page 6

page 6 of 6 pages
Engineering
Standards
Name
Digital Aerial Warning Display
Identifier
Installation Information
Engineering Standard Number
C1-102342-A
The
Class1
Aerial Loading Display is designed to warn aerial operators of
dangerous loading conditions when an aerial device is operated at low angles
of elevation. Live loads (factors that increase this load such as ice, occu-
pants on the ladder, water load, extra equipment, etc.) are instantly taken into
account by the system and displayed to the operator.
The display presents load information in an easy to interpret LED bar graph
display as a percentage of maximum calibrated load and includes a visual
and aural warnings.
When the aerial load approaches the maximum load (approx. 80%), 18 bars
will be illuminated on the display. When the load is increased to 90%-100%,
19-20 bars will be displayed and the display will begin to flash, when the
maximum load is exceeded by 50-100 pounds, an alarm output is activated
that can be used to drive a variety of warning systems that can notify the
operator of a potentially hazardous condition.
The alarm resets when the device comes out of an overload condition.
NOTE:
T
HE
DISPLAY
PROVIDES
A
WARNING
ONLY
AND
CANNOT
PREVENT
A
TIPOVER
. T
HE
AERIAL
DEVICE
MUST
BE
OPERATED
IN
STRICT
ACCORDANCE
WITH
THE
MANUFACTURER
’
S
IN
-
STRUCTIONS
AND
OPERATORS
MUST
BE
THOROUGHLY
TRAINED
.
A test switch can be installed to test the alarm output. This function is only
available when the unit is displaying less than 11 bars.
LOW LEVEL LOADING
0 25 50 75 100
Operation
c:\manuals\digital\LoadLevel\aerialESN.p65