Leakage Check - Nespresso ZENIUS ZN 100 PRO Service Manual

8.7 Leakage check

1. Prepare the machine according to menu 8.6.1.
2. Perform the test according to menu 8.6.2 (till point 6) a.
3. Check all the following parts under pressure for audible and visible leaks:
• Extraction unit
• Thermoblock
• Pump
• Solenoid valves
• Hose connections
4. Check low pressure hose connections subsequently.
5. Open the valve and let all water flow out of the pressure tester.
6. Switch machine off to exit the mode.
7. Replace leaky components (refer to repairs chapter).
F U N C T I O N T E S T S
A) Hot water valve - entry
B) Hot water valve - exit
C) Draine valve - entry
D) Draine valve - exit
E) Pump entry
F) Pump exit
Service manual ZN100 V 6.0
Search for leaks as
long as the water
ciruit is under pressure.
If necessary put water circuit
under pressure again untill
the inspection is finished.
All black o-rings
can be replaced
by red O-rings with the
exception of the O-rings
on the electric solenoid
valves.
Refer to the instructions
in chapter 7.6 for repla-
cing O-rings on the
electric solenoid valves.
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