WMF espresso User Manual

Service 15
2.7 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 gage and replace it with an approximately 1.0m 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.)
 Open water supply.
2.8 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
Illustration 1

WMF espresso Specifications

General

Product Type	Espresso Machine
Brand	WMF
Pressure	15 bar
Material	Stainless Steel
Features	Automatic milk frother, removable water tank