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12
Parts & Service: 020 8988 7400 / E-mail: [email protected] or [email protected]
FAULTFINDING
Problem
Possible Cause
Remedy
Tool will not operate
No power supply
Check supply & rectify as
necessary
Switch is faulty
Consult your Clarke
dealer
Fuse blown
Check & replace if neces-
sary
Motor is faulty
Consult your Clarke
dealer
Motor runs but drill bit
does not move.
Drill fastening not tight.
Secure drill bit.
Drive gear broken
Consult your Clarke
dealer
Heavy internal sparking
Faulty motor
Consult your Clarke
dealer
Warn brushes
Consult your Clarke
dealer
Motor becomes hot
Unduly heavy use
Reduce the force applied
to the tool. Let the tool do
the work.
Air vent have become
blocked.
Clean out the air vents
using compressed air or
clean with a dry cloth.
Low supply voltage
Ensure supply voltage is
correct. If an extension
cable is used, ensure it is
the correct rating and is
fully unwound.
Excessive vibration.
Drill bit bent or not
mounted correctly.
Check and rectify.
Machine bearings worn. Consult your Clarke
dealer
CHD850 Hammer Drill rev 4.fm Page 12 Monday, February 9, 2015 10:47 AM