9. Other Information
9.13 Air in the cleaning pump -> automatic venting
If there is air in the washing line when the washing pump starts, it is impossible for the
pump to circulate the washing water. The remedy: short switch-on and switch-off
impulses when the pump starts can remove air bubbles.
The number of impulses and the time interval between them must be set.
Parameter [r80] - Setting 1 =
On/off impulse with fixed quantity for all cleaning stages.
r81 - Number of switch-on and switch-off impulses
r82 - Duration of switch-on impulses A
r83 - Duration of switch-on impulses B
Parameter [r80] - Setting 2 =
-as 1 however, premature termination when pressure via pressure switch
After each switch-on impulse, the pressure switch is contacted. If no pressure has
been built up, a further impulse interval follows. If there is pressure in the line the
washing pump switches on and runs continuously. Parameter [r81] is used to limit
the maximum number of impulses.
r81 - Max. number of switch-on and switch-off impulses
r82 - Duration of switch-on impulses A
r83 - Duration of switch-on impulses B
Parameter [r80] - Setting 3 or 4
If permanent impulses of the cleaning pump are requested (improved rinsing effect) in
the rinsing steps (rinsing cycles 0 and 9) select settings 3 and 4.
N :B
During automatic venting with pressure switch evaluation, parameters [r11] and [r38]
do not come into play.
The digital input in parameter [A25] (5=Pressure switch water "Default setting") is
used directly for evaluation.
A B
A B
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