Putzmeister MP 25 - Adjusting the Water Valve Fitting Pressure Switch

Item Designation
1 Switch-off pressure adjusting screw
2 Pressure differential adjusting screw
1. Remove the housing lid on the pressure switch.
2. Using the “Switch-off pressure adjusting screw” (1) , adjust the
switch-off pressure. (+ increasing pressure, - decreasing pres‐
sure)
3. Using the “Pressure differential adjusting screw” (2) , adjust the
pressure differential and thereby the switch-on pressure. (Switch-
on pressure = switch-off pressure – pressure differential)
4. Refit the housing lid on the housing.
The pressure switch requires a pressure differential of at least
1 bar.
8.6.9 Adjusting the water valve fitting pressure switch
The switch-on and switch-off values for the pressure switch on the
water valve fitting can be adjusted as follows.
Pressure switch setting values:
● Switch-on value: 3.0 bar
● Switch-off value: 1.8 bar
Maintenance
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