AVL AVL DiCom 4000, Service Manual

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4-/5-Gas Measuring Instruments Unit AVL 4000
5-12 Service Manual
5.7 Cleaning the Condensate Part of the 4/5-Gas Bench
This part should be cleaned every six months or once a year, especially if the instrument
is often used to test non-catalytic-converter vehicles or 2-stroke engines. It should also be
cleaned if the condensate end of the pump starts to leak.
Accessories:
−
Cleaning hose with filter
Length l = 0.5…1 m; diameter d
i
= 6 mm and hole diameter max. 1 mm
(the best way to clean it is by drawing through a 50/50 % mixture of air and
cleaning fluid)
−
Connector
Hose fitting for connecting the condensate discharge hose and the probe hose
−
Cleaning fluid
approx. 2…5 l (water with non-foaming detergent)
Procedure
•
Switch the instrument off.
•
Open the hose connection between the condensate filter and check valve.
•
Connect the cleaning hose with filter straight to the check valve.
•
Clean the probe hose and probe with clean, oil-free compressed air.
Caution: the probe hose must not be connected to the exhaust gas tester!
•
Connect the probe hose and the probe to the condensate discharge hose (on the
pump) using a connecting piece
•
Now set up a rinsing fluid circuit as shown:
1
2
3
4
5
6
7
8
9
10
Fig. 5-8
1..... Cleaning hose with aperture
2..... Filter
3..... Check valve
4..... Pump
5..... Connecting piece
6..... Probe hose
7..... Probe
8..... Cleaning fluid
9..... Condensate filter
10..... Condensate collector
Hole