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Troubleshooting and basic settings
No detergent function
Metering valve disassembled
Unscrew the injector
Detergent non-return valve dismantled
Detergent non-return valve stuck
– Unscrew detergent connection, remove and
clean ball, spring, plastic sleeve and O-ring. If
necessary replace defective parts.
Washed-out injector
– If the injector is washed out, no detergent can
be taken in.
– Unscrew injector, if necessary replace O-
rings and injector.
Metering valve defective
– Disassemble and clean metering valve. Re-
place defective parts if necessary.
High-pressure hose defective/too long
– Check the high-pressure hose for any crus-
hed points. Replace if necessary.
Note:
Extended hoses may create a high
resistance. Change the nozzle (cross-
section) if required.
3
5
7
1
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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...