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

Page 6

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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