Hilti DD 130, Руководство по эксплуатации, Страница: 17 / 19

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9. Troubleshooting
Fault Possible cause Remedy
The tool doesn't start. Fault in mains supply Plug in another electric appliance
and check whether it works.
Supply cord or plug defective The cord should be checked and
replaced if necessary by an
electrical specialist.
Switch defective The switch should be checked and
replaced if necessary by an
electrical specialist.
Motor runs but the core bit Gearing defective The tool should be repaired at a
doesn't rotate. Hilti service centre.
Rate of drilling progress decreases. Water pressure / water flow rate too Regulate the water flow rate at the
high side handle.
Core bit defective Check the core bit for damage and
replace it if necessary.
Gearing defective The tool should be repaired at a
Hilti service centre.
Core bit segments polished Resharpen the core bit on a sharp-
ening plate under water flow.
Motor cuts out. Tool stops running. Guide the tool straight.
Tool has overheated. The motor's Ease the load on the tool and allow
thermal overload protection has been it to run up to full speed by press-
activated. ing the switch several times.
Electronics defective The tool should be repaired at a
Hilti service centre.
Cooling fan defective The tool should be repaired at a
Hilti service centre.
Water does not flow. Filter or water flow indicator blocked Remove the filter or water flow
indicator and flush it through.
Water escapes at the gear housing. Shaft seal / water swivel / extraction The tool should be repaired at a
head defective Hilti service centre.
The core bit cannot be inserted in Connection end or chuck dirty or Clean the connection end and
the chuck. damaged chuck. Replace parts if necessary.
Water escapes at the chuck. Connection end or chuck dirty Clean the connection end and
chuck.
Chuck seal defective Check the seal and replace it if
necessary.
Excessive play in the drilling Excessive play at the guides Readjust the guides.
system. Chain inadequately tensioned Tension the chain.
Pivot mechanism loose Tighten the pivot mechanism
adjusting lever (6.11).