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WMF 1200 S Service manual edition 06/2012
WMF 1200 S Service Manual
4.4
Replacing steam boiler
The steam boiler is filled from the hot water boiler via the
supply valve having replaced the steam boiler and switched
ON the machine. The supply valve is opened until the
electrode reports “contact”. Then the machine is heated up.
4.5
Replacing hot water boiler
The hot water boiler is not filled automatically after the
replacement. If the steam boiler electrode got in contact
with water, the steam boiler and hot water boiler would
heat up. Therefore keep the heating unplugged having
replaced the hot water boiler. Then fill up the hot water
boiler via the Servicetool / component test until hot water
runs out of the spout:
• Voltage 24 V OK
• Hot water valve
• Oscillation pump
• machines with constant water supply are equipped with
an additional hot water supply valve
Then unplug the coffee machine mains plug and plug the
hot water boiler mains plug in the CPU.
4.6
Check and set pressure reducer
Press the unlighted P-button for 3 s in the machine
program under Information/Production date. So the hidden
routine for setting the pressure reducer is started.
Remove screw plug on water tank union.
Screw in auxiliary nipple (33.2320.8000) for plug
connector adapter.
Place auxiliary tool on union.
keep the unlighted P-button pressed in the machine
program under Information/Production date. After 3
s the boiler infeed valve opens; Read pressure from
manometer and set to 1.8 bar.
The boiler infeed valve closes again when P-button is
released
Remove setting controller and remove auxiliary nipple.
Replace screw plug.
4.7
Descaling, Filter replacement, Filter
rinsing
Information see User Manual.
