Calibration; 17 5.3 Service Intervals; 17 5.3.1 Half-Yearly Maintenance; 17 5.3.2 Annual Maintenance - Bosch BEA 055 Manual Original

en | 22 | BEA 055 | Maintenance
5.

Maintenance

!
Work on electrical equipment is only to be
performed 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

Calibration

For applications demanding mandatory calibration,
regular calibration is essential. (depending on the
regulations of the respective country).
5.3 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.
5.3.1 Half-yearly maintenance
¶
Replacement of coarse filter GF1 (fig. 3, pos. 8) in
sampling hose.
¶
Replacement of coarse filter GF2 (fig. 3, pos. 1),
refer to Section 5.4.4.
¶
Check whether both PVC hoses are connected to
the gas outlets (fig. 3, pos. 6 and 7).
¶
Visual inspection of sampling probe (fig. 3, pos. 10).
¶
Sampling probe leak test (refer to Section 5.4.1).
5.3.2 Annual maintenance
This work is to be performed by a qualified
maintenance service. It includes the half-yearly
maintenance and the following additional items:
¶
Checking of BEA 055 measurement accuracy with
a test gas.
¶
Replacement of activated charcoal filter (fig. 3,
pos. 4) in zero gas path.
¶
Replacement of coarse filter GF3 (refer to
Section 5.4.4)
Compliance with the specifications of the relevant
authorities must be ensured.
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11-16V
20 W
459907_4Ko.eps
11
Fig. 3:
1 Coarse filter GF2
2 Coarse filter GF3
3 8 m hose
4 Activated charcoal filter AF1
5 O sensor
2
6 Measurement gas outlet (transparent PVC hose)
7 Gas outlet 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
5.4
5.4.1
To ensure accurate exhaust emissions tests, it is
essential 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.
5.4.2
Keep the opening at the tip of the exhaust gas
sampling probe clean. In the event of HC residue and
condensate, detach the exhaust gas sampling probe
from the hose and blow compressed air through it in
the opposite direction to the intake flow.
5.4.3
Check for damage. In the event of HC residue or
condensate, detach the hose from the measuring
device and blow compressed air through it in the
opposite direction to the intake flow.
BEA 060
GF 3 GF 2
O2 AF I
7 6
5 4
10
BEA 055
Maintenance
Leak-tightness of sampling system
Exhaust gas sampling probe
Exhaust gas sampling hose
1
2
3
8
9
Robert Bosch GmbH