Espresso Pump - WMF 5000 S+ Service Manual

Service
2.3

Espresso pump

The espresso pump used in the WMF 5000 S+ has a „balanced" pump head. The output pressure is
regulated to the pump pressure setting, regardless of the input pressure. The standard factory
setting is 7.5 bar.
The pump head is available as a separate spare part. When the pump head is replaced, make sure
than the alignment is correct. The pump connections must be at right angles to the pump motor
mounts.
Setting the pump pressure:
 The setting screw on the espresso pump can be accessed via the brewer shaft.
 The standard installed pressure sensor can be used for adjusting the pump pressure. The
service routine „Adjust espresso pump" displays the pump pressure on the screen.
Important notes for technicians / Note to customer
 The espresso pump is NOT self-priming.
 Risk of damage to the espresso pump when running empty.
 The coffee machine must therefore have an upstream pressure on the line side of 0.2 bar. This means:
 Under no circumstances must the coffee machine be operated with tank which DOES NOT HAVE a supply pump between it and the machine.
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