Frost Protection With Lost Water; Monitoring And Safety Devices - Kärcher SB MU Manual De Instrucciones

Frost protection with lost water

1 Safety valve
2 Pressure switch
3 Pressure reducer
4 Back up valve
5 Solenoid valve emergency frost protec-
tion, open without power
6 Locking valve
7 Fresh water supply
8 Sieve
9 Aperture
10 Back up valve
Frost protection with 4th type of
water
1 Safety valve
2 Fresh water supply
3 Solenoid valve emergency frost protec-
tion, open without power
4 Back up valve
5 Pressure switch
6 Solenoid valve frost protection, normal-
ly closed
7 Pressure reducer
8 Filter
9 Back up valve
10 Pump 4th type of water
11 Tank 4th type of water
12 Backflow of frost protection water
13 Sieve
14 Aperture
15 Back up valve
16
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EN

Monitoring and safety devices

Overflow valve of high-pressure pump
– Opens when the permissible operating
pressure is exceeded - also even the le-
ver for hand-spray gun is released and
circulates the water. The high-pressure
jet is available when the hand-spray
gun is opened again.
The overflow valve is set by the manufac-
turer and sealed. Setting only by customer
service.
Motor protection switch
– The motor protection switch interrupts
the electric circuit if the motor is over-
loaded.
Hard water sensor
If the residual hardness of the softened wa-
ter exceeds a limit value, the system is
switched over to the second base exchang-
er bottle. The depleted base exchanger
bottle is regenerated.
Pressure switch water shortage
For each type of water there is one pres-
sure switch.
In case of water shortage, an error mes-
sage is displayed.
Level switch Buffer tank is full
Switches off the pump when the buffer tank
for permeate is full.
Level sensor pump RO on
Switches on the RO pump to produce per-
meate.
Level switch Buffer tank is empty
Emits a signal to the system when the per-
meate buffer tank is empty.
Temperature monitoring hot water
If the warm water temperature exceeds 60
°C, it is switched over to fresh water for pro-
tection of the pumps.
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