PFT RITMO M - Pressure Reducing Valve; Check Pressure Switch; Pressure Switch Water; Pressure Switch Compressor

Mixing pump RITMO L / RITMO M Overview - Operation
Maintenance work
66 2016-02-17
50.1.1 Strainer screen
Fig. 113 : Strainer screen
1. Remove the locking screw (1) of the pressure reducer valve.
2. Remove the strainer screen (2) and clean it (every two weeks).
3. Replace the screen in case of heavy contamination.
4. Insert strainer screen and screw on the locking screw.
Strainer screen for pressure reducer: Article number 20156000
 Execution by service technician.
50.2 Pressure reducing valve
Fig. 114: Pressure reducing valve
Check the setting of the pressure reducer valve:
1.4 bar at maximum flow.
Needle valve (1) opened completely.
50.3 Check pressure switch
50.4 Pressure switch water
Fig. 115: Pressure switch
If faults occur increasingly, replace the water pressure switch (1).
The pressure switch is firmly engaged and cannot be readjusted.
 Execution by service technician.
Pressure switch
water (1)
Machine switches
“ON”
Machine switches
“OFF”
Water 1.7 bar 1.4 bar
50.5 Pressure switch Compressor
Fig. 116: Pressure switch
Pressure switch-off
for compressor (1)
Compressor
switches “ON”
Compressor
switches “OFF”
Compressor 1.1 bar 1.4 bar
Pressure switch-off
for cleaning
machine (2)
Machine switches
“ON”
Machine switches
“OFF”
Cleaning machine 0.9 bar 1.2 bar
The safety valve (3) for the air compressor is set to 1.8 bar.
2
1
1
1
3
2
1