MEIER-BRAKENBERG D-Line + MBWeich 4, Assembly Instructions And Operator'S Manual, Page: 30 / 59

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In normal operation only a small amount of water is drained within a few seconds after the pump
unit has stopped. An increased volume may indicate a defective main valve or air in the pipes. If
water also escapes while the pump is running, this indicates, for example, a defect in the high-
pressure valve (e.g. due to wear).
4.6.2. High pressure nozzles
The high-pressure nozzles ensure extremely fine at-
omization of the injected water at pressures above
50 bar. They consist of the nozzle body (1), the
spring valve (2), the bolt (3) and the nozzle head (4).
Cleaning:
Blocked nozzles or nozzles with poor spray pattern can be unscrewed and disassembled. If the
nozzle is calcified, it might be cleaned in a descaling bath / acetic acid bath / ultrasonic bath. Af-
terwards rinse thoroughly and blow out.
In case of frequent problems with the nozzles due to calcareous or ferrous water, water treat-
ment should take place.
If it is observed that brass nozzles are not sufficiently resistant (e.g. chemically), they should be
replaced with stainless steel nozzles.