815_217(1).pdf

Test Bench -

Operating Instructions

2nd Edition

815 000 217 3

8150002173

This publication is not subject to any update service.

New versions are available in INFORM at

www.wabco-auto.com

 Copyright WABCO 2004

Vehicle Control Systems

An American Standard Company

The right of amendment is reserved.

Version 002/11.04

815 000 217 3en

Test Bench

Table of Contents

1 Safety Instructions

2 Design and Function

2.1 Purpose

2.2 Structure

2.3 Function

3 Operation in Connection with

WABCO Test Instruction

4Eion

5 Maintenance

Annex

Technical Data

Accessories (Part of Delivery)

Safety Information

Test Bench

1 Safety Information

Before erecting test bench and testing sample,

carefully peruse following safety information.

WARNING

CAUTION

Only specialist personnel with specific system

knowledge is authorized to testing sample.

Before starting any repair work, first read and

understand all of this instruction document.

Test sample on calibrated test bench only.

Ensure before starting any test that the shut-off

cocks are having their correct normal position (see

test instructions).

While performing sample test, absolutely keep to

pertinent test instruction.

In case of doubt about correct setting of sample

you should consult vehicle manufacturer for the

allowed values.

Keep to company's relevant accident prevention

regulations and national regulations.

See to it that quick disconnects are safely plugged

on test bench and test sample.

Take care to have test sample safely clamped in

vise.

Only loosen lock screws, hoses and equipment

parts then when the respective lines of the test

bench are vented.

Symbolism

WARNING

- ction step

• Enumeration

↑ see preceding figure

↓ see following figure

Possible dangers

grave personal injuries or death

CAUTION

Immediately impending dangers

Personal injury or material loss

Additional hints, info, tips

1/6

Test Bench

Design and Function

2 Design and Function

2.1 Purpose

The test bench is designed for testing equipment

from compressed-air braking systems for instance.

2.2 Structure

Fig. 1

Test Bench Components

1 Magnet test equipment

2 Shut-off cocks with backend nozzles

3 Test bench ports

4 Precision control valves

5 Shut-off cocks with backend nozzles

6 Insert

7 Button actuator for draining

8 Pressure reducing valve

9 Drawers

10 Central locking system

11 Test bench plate

12 Vise (drawing shown offset)

13 Circuit diagram

14 Dash panel

15 Pressure gauge

16 Nozzles

2/6

Design and Function

Test Bench

2.3 Function

FH = Precision Control Valve, High Pressure

FN = Precision Control Valve, Low Pressure

fig. 2

Circuit Diagram

High-pressure line runs to precision control valves

FH1 and FH2, via shut-off cocks 12 and 22, to test

bench ports and as well as to pressure

gages 1 and 2.

- Set pressure-reducing valve D ( ↑ see Fig. 1, 8)

for directing compressed air to low pressure

part.

Adjustment up to 10 bar possible.

Air Squeezer Tests

Exclusively use test port for air squeezer

tests only.

- Open shut-off cock B for connecting both 20

liter tanks.

- Open shut-off cock V for maintaining gener-

ated pressure at desired level.

Both 20 liter tanks are secured by safety valve.

Using test bench port you may withdraw max

10 bar of compressed air after opening shut-off

cock F.

- Open shut-off cock A.

You may read set pressure from pressure gage V.

Low-pressure line runs to precision control valves

FN1 and FN2, via shut-off cocks 11 and 21, to test

bench ports and as well as to pressure

gages 1 and 2.

Test bench ports , , and run to iden-

tical measuring units. The measuring units consist

of one 1 liter air reservoir, one shut-off cock and

one backend nozzle each.

Electropneumatic Brake and Control Equipment

Test bench is equipped with magnet test equipment

( ↑ see Fig. 1, 1) for testing electropneumatic brake

and control equipment. It is suitable both for testing

pulse magnets or permanent magnets.

3 4 6

3/6

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