Bendix-commercial-vehicle-systems LP-3 LOW PRESSURE INDICATORS Manual do Utilizador descarregar pdf

Bendix

LP-2

™

& LP-3

™

Low Pressure Indicators

SD-06-1600

DESCRIPTION

The low pressure indicator is a safety device designed to

give an automatic warning to the driver whenever air pressure

in the air brake system is below the safe minimum for normal

vehicle operation. It is usually used to operate an electrical

buzzer or warning light, or both, which are audible or visible

to the driver.

Two styles of low pressure indicators are currently

manufactured.

The LP-2

™

low pressure indicator, which is the older style

and consists of a die cast body with a spring loaded

diaphragm clamped between the body and the Bakelite

cover.

The LP-3

™

low pressure indicator is the newer style,

consisting of a die cast body, nylon cover and employs a

spring loaded o-ring diaphragm and piston. The LP-3

™

indicator is available with either one terminal or two. The

single terminal unit utilizes a metallic gasket between body

and case to ground the lower contract strip. The two terminal

unit utilizes a phenolic insulating gasket to isolate both

terminals from the vehicle frame.

The electrical contacts provided in both the LP-2

™

and LP-3

™

indicators remain closed by spring force until the air brake

system pressure below the diaphragm is above the setting

(force) of the low pressure indicator spring. The setting of

the indicator and piece number is marked on a label on the

valve body. If a label is not present, then the vehicle manual

should be consulted for the proper setting. The nominal

setting of the indicator is 60 psi; however, pressure settings

may vary depending upon the vehicle.

FIGURE 1 - LP-2

™

LOW PRESSURE INDICATOR FIGURE 2 - LP-3

™

LOW PRESSURE INDICATOR

COVER

DIAPHRAGM

BODY

SPRING

CONTACT

POINTS

COVER

SPRING

CONTACT

POINTS

PISTON

BODY

O-RING

DIAPHRAGM

1 2 3 4

Resumo do Conteúdo

Página 1 - Low Pressure Indicators

1Bendix® LP-2™ & LP-3™ Low Pressure IndicatorsSD-06-1600DESCRIPTIONThe low pressure indicator is a safety device designed togive an automatic warn

Página 2

2OPERATIONTo describe the operation, we shall assume that the lowpressure indicator is set for 60 psi. When air pressure at thesupply port and under t

Página 3 - PERSONAL INJURY OR DEATH:

3LP-3™ INDICATOR1. Lubricate bore of body and both sides of the o-ringdiaphragm with silicone lubricant BW-650-M (Bendixpiece no. 291126).2. Install o

Página 4

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Bendix-commercial-vehicle-systems LP-3 LOW PRESSURE INDICATORS Manual do Utilizador

Consulte online ou descarregue Manual do Utilizador para Equipamento Bendix-commercial-vehicle-systems LP-3 LOW PRESSURE INDICATORS. Bendix Commercial Vehicle Systems LP-3 LOW PRESSURE INDICATORS User Manual Manual do Utilizador

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