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20
Troubleshooting and basic settings
Unit does not reach required pressure
Checking flow rate
Setting operating pressure
Fitting the shut-off valve
Check flow rate
– Mount the water inlet hose.
– Mount the shut-off valve at the high-pressure
outlet.
– Connect the high-pressure hose with hand-
gun (no nozzle) to the shut-off valve.
– With the handgun open, start up the unit.
– Use the shut-off valve to set operating pressu-
re (see technical data).
– Using a suitable container, time and measure
the water flow volume (e.g., liters per minute).
If there is too little water, there may be an
external water loss (visible water leakage) or
an internal water loss (concealed water leaka-
ge), e.g., pressure valves, suction valves,
overflow valve leaking.
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Summary of Contents for HD 1090
Page 1: ...HD 1090 Service Handbook 0 I 5 905 212 03 02...
Page 4: ...2 Unit function Equipment 10 15 12 9 10 13 11 14 16 1 8 2 3 4 5 6 7 0 I...
Page 6: ...4 Unit function Functional diagram 5 3 7 8 9 10 11 12 13 14 2 1 15 16 17 4 6...
Page 8: ...6 Unit function Pump 15 17 18 10 12 13 11 14 16 20 9 12 11 1 8 2 3 4 5 6 7 11 19 21...
Page 10: ...8 Unit function Pressure and flow control with the Servopress handgun 1 2 4 3...
Page 14: ...12 Unit function Handgun with pressure and flow control Servopress with low effort version...