Set pressure reducer
The pressure manometer 33 2745 3000 (with aperture 1.1) can be used to check and adjust the output pressure of the
pressure reducer. Requirements: The water system and steam boiler are depressurized (according to the routine), the main
water tap is closed, the machine is disconnected from the power grid.
Disassemble to the level shown: Top lid
Checking and adjusting the output pressure:
• Close water tap
• Pull the hose off of the plug-in nipple after the inlet assembly (illustration 1 and 2)
• Remove the hose from the test pressure manometer and replace it with an approximately 1.0 m
hose.
• Place the hose on the plug-in nipple of the inlet assembly (illustration 1 and 2), run the free
end to the drip tray and set it down there (illustration 3)
• Open water supply valve
o For the low pressure option, the power must be switched on here and the espresso
pump must be actuated by the software under Service > Component test > Water
system > Espresso pump .
• Adjust the pressure reducer by turning the adjustment screw to 2.4 ± 0.1 bar
• Close water tap
• Remove the pressure manometer, attach the hose plug-in nipple again, replace the pressure
manometer, open water supply valve. (Replace hose again.)
Illustration 1
• Open water supply
Set the hot water temperature
The adjustable aperture on the pressure reducer can be used to adjust the cold water proportion for the hot water
dispensing.
• Temperature too low -> turn screw (illustration 4) clockwise -> less cold water mixed in
• Temperature too high -> turn screw (illustration 4) counterclockwise -> more cold water
mixed in Set the hot water temperature to the customer's requirements - but no higher than 96 °C
Illustration 2 Illustration 3
Illustration 4
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