WMF 800 - Page 148

Service, Start-up, Maintenance
T5-9
© WMF800 / 900 / 1000S / 1000proS Edition 07/2014 - KMT
5/2.4.3 Service Maintenance Procedure
1. Prepare coffee machine
Coffee machine must be cold and depressurized.
 Switch off coffee machine, disconnect mains plug
 Position coffee machine so that it is easily accessible from all sides
2. Open coffee machine
 Remove all product containers
 Remove all lids
 Remove the coffee machine covers down to the pedestal
3. Fan
 Unscrew fan and adapter from side panel
 Clean fan
 Refit fan, adapter and side panel
4. Replace safety valves, if required
 Remove top
 Remove hose from safety valve and unscrew safety valve
 Install new safety valve and replace hose
 Re-install top
5. Replace solenoid valves
Valves must be checked for leakage and lime scale. If required, replace valve base.
 Remove top
 Remove the safety clip
 Remove solenoid
 Remove hoses completely
 Replace valve base (observe direction of flow)
 Replace hoses
 Replace solenoid
The brewing valve must be installed against the direction of flow. The arrow on the
valve must point away from the hot water boiler.
Cappuccinoventil
Brühwasserventil
Zulaufventil
Heißwasserventil
Steam-Jet Ventil
Steam Jet valve
Cappuccino valve
Brewing water valve
Inlet valve
Hot water valve