21
11. TROUBLESHOOTING & MAINTENANCE
Machine will not
start.
1. Fuse blown or circuit breaker
tripped.
2. Cable damaged.
1. Replace fuse or reset circuit
breaker.
2. Have cable replaced by
authorised service agent.
Problem
Probable Cause
Remedy
Machine
vibrates.
Accessory not
turning in
flexible drive
shaft.
1. Wheel out of balance.
2. Wheel loose.
1. Flexible drive shaft, not correctly
fitted to the machine.
2. Collet loose.
1. Check and re-fit connection, as
described in section 9.6 on pg.16.
2. Check collet size is correct to the
size of the mandrel and
re-tighten.
1. Dress wheels.
2. Stop machine immediately.
Tighten wheel.
3. Replace wheel
†
.
11.1 TROUBLESHOOTING
Warning:
For your own safety, turn the switch off and remove the plug from the power
supply socket before carrying out any maintenance or troubleshooting.
11.2 MAINTENANCE
Regular inspection and cleaning reduces the necessity for maintenance operations and will
keep your tool in good working condition.
– The motor must be correctly ventilated during tool operation. For this reason avoid
blocking the air inlets with hands. After use disconnect the tool from the power supply
and vacuum the ventilation slots.
– If the replacement of the supply cord is necessary, this has to be done by the
manufacturer or his agent in order to avoid a safety hazard.
Wheel dressing
New grinding wheels are often out of true and over time can become grooved, misshapen or
glazed. Use of a grinding wheel dresser will re-cut the surface of the wheel, providing a true,
sharp cutting surface. A Grinding wheel dresser (stock No.30479 can be obtained from your
local Draper stockist).
†
Replacement abrasive wheels and other accessories can be obtained from your local Draper
stockist
