Care And Maintenance; Tools And Accessories; Troubleshooting - Hilti UH 650 Manual De Instrucciones

8. Care and maintenance

Unplug the supply cord from the mains socket.
8.1 Care of insert tools
en
Clean off dirt and dust deposits and protect your insert
tools from corrosion by wiping them with an oil-soaked
rag from time to time.
8.2 Changing the chuck
The quick-release chuck must be tightened to the spec-
ified torque of 40 Nm.
The key-type chuck must be tightened to the specified
torque of 40 Nm.
8.3 Care of the electric tool
The outer casing of the tool is made from impact-resis-
tant plastic. Sections of the grip are made from a syn-
thetic rubber material.
Never operate the tool when the ventilation slots are
blocked. Clean the ventilation slots carefully with a dry
brush. Do not permit foreign objects to enter the inte-
rior of the tool. Clean the outside of the tool at regular
intervals with a slightly damp cloth. Do not use a spray,

9 Tools and accessories

Chuck
Chuck

10. Troubleshooting

Fault
The tool doesn't start.
No hammering action.
The tool does not achieve
full power.
The drill bit makes no
progress.
8
Printed: 07.07.2013 | Doc-Nr: PUB / 5071287 / 000 / 00
Possible cause
Fault in mains supply.
Supply cord or plug defective.
Control switch defective.
The function selector switch is set to
rotary drilling.
The extension cord is too long or has
inadequate cross section.
Control switch not fully pressed.
The forwards/reverse switch is set to
reverse rotation.
The drill bit is blunt or damaged.
steam pressure cleaning equipment or running water
for cleaning. This may negatively affect the electrical
safety of the tool. Always keep the grip surfaces of the
tool free from oil and grease. Do not use cleaning agents
containing silicone.
8.4 Maintenance
Check all external parts of the tool for damage at regu-
lar intervals and check that all controls operate fault-
lessly. Do not operate the tool if parts are damaged or
when the controls do not function faultlessly. If neces-
sary, your electric tool should be repaired at a Hilti repair
center.
Repairs to the electrical section of the tool may be car-
ried out only by trained electrical specialists.
8.5 Checks after care and maintenance
After carrying out care and maintenance on the tool,
check that all protective equipment has been refitted and
that all parts function faultlessly (side handle, chuck
tightened to specified torque).
UH 650
Quick-release chuck
Key-type chuck with key
Remedy
Plug in another electric appliance and
check whether it works.
Have the cord checked and, if necessary,
replaced by an electrical specialist.
Have it checked and, if necessary,
replaced by an electrical specialist.
Set the function selector switch to ham-
mer drilling.
Use a shorter extension cord or a cord
with adequate cross section.
Press the control switch as far as it will
go.
Set the switch to forwards rotation.
Regrind the drill bit tip or replace the drill
bit.