Chapter 5 Dismantling components
144 SMSO-2-02.05- 15.07.03
Disconnect the rotary-vane type pump from the motor
6. Completely loosen the connecting clamp; unscrew and
remove the screw
7. Uncouple the rotary-vane type pump from the drive
motor;
8. Take out the coupling and place on one side. Take note
of how the coupling is installed (long side is on the side
of the motor)
Electrical check
See section entitled “control system diagram, rotary-vane
type pump motor”
Capacitors can be tested only on special
measurement instruments. Resistance
measurements etc. are not meaningful and thus
pointless.
Installation
Carry out assembly in reverse order to the dismantling pro-
cedure.
Set pump pressure
The pump pressure is adjusted against a
“closed system”, i.e. all the valves must be
closed. However, in order to be able to read off
the pump pressure on the manometer, the
pressure that has built up must
be vented via a valve at brief intervals. The service function
“system test, set brewing pressure” is used to perform this func-
tion.
1. Using the chip card, select “service, system check, set
brewing pressure”.
2. Loosen the counter nut on the adjusting screw
3. Adjust the pump pressure: Nominal pressure: 7.0 – 7.5
bar
to make it higher = turn clockwise
to make it lower = turn anti-clockwise
to adjust a lower pressure , turn slowly
4. Tighten the counter nut
5. End “system check, set brewing pressure”
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