English
5.906-736.0 Rev. 00 (07/15)
177
1 Water pipes
2 High pressure hose
Disconnect the trigger gun from the high-pressure
hose.
Connect the high-pressure hose to the frost protection
inlet.
Disconnect the water hose from the water supply.
Connect the water hose to the return flow of the frost
protection.
Set the operating mode switch to the operating mode
"frost protection".
With cold engine only:
To preheat the motor, turn the key switch to the left and
hold it until the indicator light preheating goes out.
Turn key switch to position "I". The indicator lamp for
operational readiness lights up.
The control voltage is switch on and the display shows
the operating status "Antifreeze".
Turn the key switch to the right until the motor is run-
ning.
The descaling fluid is pumped in the circuit through the
device.
Repeat the procedure 3-4 times, then rinse with clear
water and, if necessary, some brine; collect the desca-
ling fluid for later environmentally friendly disposal.
The dissolved rejects are filtered in the filter of the water
inlet. Finally clean it.
NOTE
In the frost protection mode flow is recognised, however,
no pressure. This is OK in this operating mode and does
not lead to a fault message!
The fault message "water shortage" is deactivated with the
operating mode.
The frost protection mode has a maximum work time of 5
minutes, then the motor is switched off automatically.
In case of a faulty operation that leads to a pressure build-
up, the following could happen:
–
the safety valve opens or
–
the control switches off the diesel engine, as flow and
pressure are synchronous. After 5 seconds, the error
message ERROR 5 occurs
NOTE
Following the descaling, a maintenance of the pump is rec-
ommended.
NOTE
In order to dispose of the descaling water in an environ-
mentally friendly way, it may be necessary to neutralise it.
Dilute the collected descaling water with approx. 10-
20 litres of water.
Dip pH indication paper 6.768-006.0 into the descaling
water and determine the pH value.
While constantly stirring, add sodium acetate (1 kg:
6.287-172.0) until a pH-value of approx. 7 is reached.
The test is done with the pH indicator paper again.
After that, the descaling water can be disposed of via
the public sewer system.
Summary of Contents for HDS 9/50 De Tr1
Page 46: ...46 English 5 906 736 0 Rev 00 07 15 1 Reflector on both sides 2 Marker light on both sides...
Page 182: ...182 English 5 906 736 0 Rev 00 07 15 13 3 Troubleshooting Yanmar diesel engine...
Page 184: ...184 English 5 906 736 0 Rev 00 07 15...
Page 185: ...English 5 906 736 0 Rev 00 07 15 185 14 3 Maintenance plan Yanmar diesel engine...
Page 189: ...English 5 906 736 0 Rev 00 07 15 189 HDS 13 20 and 17 20 safety block...
Page 190: ...190 English 5 906 736 0 Rev 00 07 15 HDS 9 50 and 13 35 pump head...
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