Service Intervals; 18 5.2.1 Half-Yearly Maintenance; 18 5.2.2 Annual Maintenance; Maintenance - Bosch BEA 065 Manual Original

5.

Maintenance

!
Work on electrical equipment is only to be per-
formed by persons with sufficient knowledge and
experience of electrical systems!
5.1 Cleaning
!
Do not use abrasive cleaning agents and coarse
workshop cloths!
¶
The housing and the LCD are only to be cleaned
using a soft cloth and neutral cleaning agents.
5.2

Service intervals

i
Routine maintenance ensures constant readiness for
operation.
The following maintenance intervals are to be observed
unless otherwise specified by the approval authorities.
5.2.1 Half-yearly maintenance
¶
Replacement of coarse filter GF1 (fig. 4, item 8) in
the exhaust gas sampling hose.
¶
Replacement of coarse filter GF2 (fig. 4, item1), see
sec. 5.2.4.
¶
Check whether the PVC hose is connected to the gas
and condensate outlet (fig.4, item 7).
¶
Visually inspect the sampling probe (fig.4, item 10).
¶
Leak test of exhaust gas sampling probe (see
sec. 5.3.1).
5.2.2 Annual maintenance
This maintenance work is to be performed by a quali-
fied maintenance service. It comprises the half-yearly
maintenance and the following additional points:
¶
Checking of BEA 065 measurement accuracy with a
test gas.
¶
Replacement of active carbon filter (fig. 4, item 4) in
zero gas path.
¶
Replacement of coarse filter GF3 (see sec. 5.3.4)
Compliance with the specifications of the relevant au-
thorities must be ensured.
Robert Bosch GmbH
O2
N0
11-16V
7 6
11
Fig. 6: BEA 065
1 Coarse filter GF2
2 Coarse filter GF3
3 8 m hose assembly
4 Active carbon filter AF1
5 O sensor
2
6 Measurement gas outlet
7 Gas and condensate outlet (transparent PVC hose)
8 Coarse filter GF1
9 30 cm Viton hose (black)
10 Exhaust gas sampling probe
11 Plastic hose for leak test
5.3 Maintenance
5.3.1

Leak-tightness of sampling system

To ensure accurate exhaust emissions tests, it is es-
sential that there are no leaks in the sampling system
(exhaust gas sampling probe, hoses, coarse filters). It is
therefore advisable to conduct the leak test daily.
5.3.2 Exhaust gas sampling probe
Keep the opening at the tip of the exhaust gas sampling
probe clean. In the event of HC residue and conden-
sate, detach the exhaust gas sampling probe from the
hose and blow compressed air through it in the oppo-
site direction to the intake flow.
5.3.3 Exhaust gas sampling hose
Check for damage. In the event of HC residue or con-
densate, detach the hose from the measuring device
and blow compressed air through it in the opposite di-
rection to the intake flow.
Maintenance | BEA 065 | 25
459906_4Ko.eps
GF 3 GF 2
AF I
1
2
3
5 4
10
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1 689 989 318
en
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2017-01-20