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8024019/AE00/V1-0/2019-02| SICK A D D E N D U M T O O P E R A T I N G I N S T R U C T I O N S | FWE200DH
Subject to change without notice
MAINTENANCE 4
4.4 Checking the spray pattern
The effect of water back purging can be reduced by contamination or damage in the area of
the swirl chamber. For this reason the spray pattern must be checked regularly.
Proceed as follows:
1 Set device to Maintenance mode.
2 Remove the plug of the WBP swirl chamber cover (see “Sealing plug on WBP swirl cham-
ber cover”, page 23).
3 Illuminate swirl chamber with suitable light source.
4 Trigger the control cycle and check the water back purge function (see “Water purging
function test”, page 23).
5 Put the device back into operation.
If the spray pattern is not correct or does not hit the correct points, clean and check the
pipes of the WBP swirl chamber cover and readjust when necessary. If this does not solve
the problem, replace the WBP swirl chamber cover (see “Spare parts / consumables”,
page 27).
Fig. 21: Sealing plug on WBP swirl chamber cover
Fig. 22: Water purging function test
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