1 689 989 111
2019-07-24
|
Robert Bosch GmbH
Operation | BEA 055 | 23
en
5.5
Spare and wearing parts
Designation
Order number
BEA 055
1 687 023 550
O
2
sensor
<)
1 687 224 727
NO sensor
<)
1 687 224 954
Coarse filter
<)
1 687 432 005
Active carbon filter
<)
1 687 432 014
Exhaust gas sampling hose for the BEA 055
and exhaust gas sampling probe (gasoline)
1 680 706 043
1 680 790 049
Test hose for leak test
<)
1 680 706 040
Power supply unit for the BEA 055
1 687 023 816
Power cable (1.5 m)
<)
1 684 461 106
USB connection cable (1 m)
<)
1 684 465 491
<)
Wearing part
5.4.5
Checking display stability
¶
Detach the hose at the exhaust gas measurement
inlet of the BEA 055.
i
There must not be any engine exhaust gases,
gasoline or cleaning agent vapors in the atmosphere
in the vicinity of the BEA 055.
Select "Diagnosis >> Engine/gas values" in the Bosch
Emissions Analysis. The current gas values are
displayed following zero calibration and the HC residue
test.
Observe the display for approx. 2 minutes with regard
to limit values and stability.
Fluctuation error limits (noise):
Gas
Set value
Fluctuation
CO
0 % by vol
±0.005 % by vol
CO
2
0 % by vol
±0.2 % by vol
HC
0 ppm by vol
±12 ppm by vol
O
2
20.9 % by vol
±0.4 % by vol
The HC display must have settled after approx.
2 minutes to a value < 12 ppm by volume.
5.4.6
O
2
sensor
Over the course of time, the O
2
sensor is subject to
wear. The oxygen measurement zero point is constantly
monitored. In the event of deviation, a fault message
appears. The message indicates the need for O
2
sensor
replacement.
!
Use is only to be made of a genuine O
2
sensor
with the designation BOSCH A7-11.5 or
CLASS R-17A BOS (order number 1 687 224 727).
The O
2
sensor contains an alkaline solution.
Alkaline solutions cause severe burns on
bare skin.
¶
Do not open or damage the O2 sensor.
¶
Wear safety goggles.
¶
Wear protective gloves.
¶
Immediately rinse any areas of skin affected
with water at least 15 minutes and then
consult a doctor.
!
Old O
2
sensors are classed as
hazardous waste
and must be disposed of in accordance with
the applicable regulations. The disposal code is
16 05 02 (European waste catalog: EAK code).
In addition, these parts can be sent back to the
manufacturer for disposal.
5.4.7
NO sensor
Over the course of time, the NO sensor is subject
to wear. The zero point of the NO measurement is
constantly monitored. In the event of deviation, a fault
message appears. The message indicates the need for
NO sensor replacement.
!
Always use the genuine NO sensor (NOXO 100 Nitric
Oxide Sensor; order number 1 687 224 954).
The NO sensor contains acid.
Acids cause severe burns on bare skin.
¶
Do not open or damage the O2 sensor.
¶
Wear safety goggles.
¶
Wear protective gloves.
¶
Immediately rinse any areas of skin affected
with water at least 15 minutes and then
consult a doctor.
!
Old NO sensors are classed as
hazardous waste
and must be disposed of in accordance with the
applicable regulations. The disposal code is 16 05 02
(European waste catalog: EAK code). In addition,
these parts can be sent back to the manufacturer for
disposal.