WMF 800 - Page 151

Service
T5-12
© WMF800 / 900 / 1000S / 1000proS Edition 07/2014 - KMT
8. Close coffee machine
 Please check to ensure:
- no electric cables are in contact with hot parts,
- all screw fittings are tightened,
- no cables are pinched,
- hoses are not kinked,
- coffee machine is clean inside
- no beans, coffee grounds or dirt are left
 Replace the coffee machine covers
 Fit all lids
 Insert product container
9. Restart
 Plug in the mains plug
 Fill up the water tank
 Switch on coffee machine and let it warm up
10. Settings
 Fill grinder
 Check/set grinding grade
 Set service in service program
 Check/set cup volumes of beverages
Perform the descaling first, followed by cleaning.
The coffee machine is again ready for operation.
After descaling, check in particular for:
• escaping water
– ascrew fitting may not be tightened properly, or aseal may be missing or
damaged
• rattling noise
– ahose or another part may be vibrating against the casing or the side covers.
11. Replace oscillation pump
 Empty water tank, grounds container, and bean hopper
 Place coffee machine on its back and remove base plate (4screws)
 Loosen both rubber holders and remove pump inlet/outlet
 Disconnect cables and remove and dispose of old pump
 Insert new pump into rubber holder and conect cables
 Fit pump inlet/outlet and refasten rubber holder
 Start up the coffee machine and check pump for leaks
12. Replace/clean flow meter
 Empty water tank, grounds container, and bean hopper
 Place coffee machine on its back and remove base plate (4screws)
 Remove inlet/outlet hose from flow meter and remove flow meter
 To open, turn the top part to the right and remove the turbine
 Clean the bottom part under warm, running water with the little brush
 When reinstalling, make sure that the red O-ring has been properly inserted
 Insert flow meter in holder and ensure hoses are kink-free
 Start up the coffee machine and check pump for leaks