24
Troubleshooting and basic settings
Unit switches on and off continuously
Detergent non-return valve leaking
– Remove detergent non-return valve. If neces-
sary replace defective parts. Do not grease
steel ball and O-ring before installing.
Overflow valve disassembled
Overflow valve leaking
– Disassemble overflow valve completely and
check all O-rings/support rings. Replace de-
fective parts if necessary.
– Lubricate all O-rings with silicone grease
6.288-080.
– Adjustment, see page 22.
Detergent non-return valve
Adjust pressure switch
Setting pressure switch
– Unit switches on and off continuously when
operated with the original accessories. Reset
(see page 22).
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...
