Nilfisk-ALTO DELTABOOSTER 7309021 - Manual (Page 40)

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3.3 Functional diagram
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22 12
14
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15
13 10 11
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25
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9
26
1. Water filter
2. Water tank
3. Overflow pipe
4. Level sensor (lack of water)
5. -
- (start inlet of water)
6. - - (stop inlet of water)
7. Relief valve
8. Flow switch (flow back to tank)
9. Excess-pressure valve (overflow valve)
10. Pressure switch (low pressure)
11. Pressure switch (high pressure)
12. Solenoid relief valve
13. Pressure gauge
14. Difuse filter, return
15. Non-return valve
16. Accumulator
17. Motor pump unit
18. High pressure hose, machine outlet
19. Temperature sensor
20. Drain cock for cleaning of water filter
21. Water inlet for hot water
22. Water inlet for cold water
23. Solenoid valve, hot water
24. Solenoid valve, cold water
25. Pipeline, high pressure
26. Oil glas with level sensor