Erbauer ERB121SDS, User Manual

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11. REPLACE A DAMAGED PROTECTIVE
RING IMMEDIATELY!
(See Fig. 16)
To replace the protective ring, pull back the lock-
ing sleeve (2) grasp the protective ring and pull
it towards you at an angle. Place the new protec-
tive ring onto the spindle and press home hard.
12. SERVICE INDICATOR (MAINTENANCE
REQUIRED)
(See Fig. 17)
When the red light-emitting diode (10) begins to
blink while the machine operates normally, re-
placement brushes will be needed.
After approximately 8 hours further operation,
the brushes are worn out completely and the
safety switch actuates. The Machine will stop
and the red diode light will blink constantly. Take
the machine to an authorised repair agent for
new brushes and preventative maintenance.
If the machine does not work before the 8-hour
warning period is over and the warning Red light-
emitting diode (10) keeps blinking, this probably
indicates the motor is damaged. If there is no
light indicator showing and the machine does
not operate, this could mean that there is no
power supply to the switch and either the auto-
matic switch or the power cord is faulty.
13. PREVENTIVE MAINTENANCE
This Power tool should be sent periodically to a
ERBAUER authorised service agent for preven-
tive maintenance, which will lengthen the life of
the machine.
Check 1
After approximately 70 hrs use, the machine
should be evaluated and if necessary repaired.
Check 2
After approximately 140 hrs use or the brushes
wearing out. The machine shall be cleaned thor-
oughly evaluated for potential and ascertained
faults repaired (brushes and O ring seals should
be replaced).
Check 3
After approximately 250 hrs use or the brushes
Fig. 17