Instruction manual

Brushes
Brush cap
7. MAINTENANCE
The tool must be maintained and used with care to ensure it operates at its peak performance. This is relatively
simple as the tool has only a few user-serviceable parts.
NOTE: Only authorised service centres should perform any repair requiring
splitting of the aluminium castings or removal of the motor.
The following checks should be made regularly and maintenance carried out as necessary:
For spare parts information please contact the manufacturer.
7.1 Motor
• Because this machine operates in a rugged environment, the motor brushes must be inspected for wear after
the first 15 hours and every few hours after that. (See Brush maintenance below). Brushes are a wearing
component and are not a warranty item.
• The motor power cord, strain relief and plug should be regularly checked to ensure it is not chafed, cut or
otherwise damaged. These components should only be repaired or replaced by a qualified person.
• The motor cooling vents on the rear cover should be frequently inspected and cleared of obstructions which
would reduce cooling flow. Use air pressure to clean the vents effectively.
7.2 Brushes
Inspect & replace brushes before they wear to minimum length.
To do this, unplug tool from power socket and unscrew the plastic brush covers on either side of the tool.
Carefully remove the brushes. Measure the brush length & replace if worn to 7mm (
9
/32”) (See fig.14).
CAUTION: UNPLUG TOOL BEFORE CHECKING/REPLACING BRUSHES.
IMPORTANT: DO NOT OVER-TIGHTEN THE BRUSH CAPS.
Insert new brushes, replacing in the same orientation as the original brushes.
Ensure brush contact correctly engaged in brush holder
Fig.14
Min. length:
7mm (
9
/32”)
12
AS160