36
ROUTINE CONTROL AND MAINTENANCE OPERATIONS
AND SAFETY CHECKS
!
Caution!
1. The motor-sweeper must be inspected by a skilled technician who checks its safety or for any damage or de-
fects in the following cases:
•
before it is put into operation.
• after
modifi cations or repairs.
•
at regular intervals, as indicated in the “Routine maintenance and control operations” table.
2. Every six months check that the safety devices are in good working order.
To ensure that the safety devices are operating properly, the machine must be overhauled by specialist staff every
5 years.
3. The person in charge of the machine must make an annual check on its condition. During this check, he must
decide whether the motor-sweeper still complies with the technical safety regulations, and then apply a mar-
ker plate to the machine to indicate that the check has been made.
Periodical maintenance checks table
Intervals in hours
8
40
150
500
1500
1
Check belts
√
2
Check that the main brush is free fom wires, strings, etc.
√
3
Check dust fi lter
√
4
Replace dust fi lter
√
5
Check main and side brushes trace width
√
6
Check the battery liquid
√
7
Check motor brushes
√
TROUBLESHOOTING
Fault
Cause
Corrective action
The motor-sweeper fails to pick up large parti-
cles of dirt or leaves traces of dirt behind.
Travel speed too high
Reduce travel speed
Brush pressure too light
Adjust brush pressure (trace on fl oor)
Brush worn
Lower or replace brush
Bristles bent, or string or wire, etc., entangled
in brush.
Remove string or wire and straighten bristles
in warm water.
Sweeper leaves dust on fl oor or dust comes
out from side fl aps.
Filter clogged
Clean fi lter
Flaps worn out or broken
Replace fl aps
Dust comes out of the suction fan
Filter torn
Replace fi lter
Motor-sweeper throws dirt forwards
Front fl ap broken
Replace front fl ap
The main brush lifts the front fl ap
Front fl ap too long
Replace front fl ap
Rapid brush wear
Excessive brush pressure
Reduce brush pressure (narrower trace).
Main brush noise diff erent or excessive.
Material wound around brush
Remove entangled material
The main brush does not turn
Drive belt broken
Fit new drive belt
Battery does not maintain its charge
Electrolyte level low
Top up electrolyte level
Battery cell burned out
Replace battery
Motor over-loaded
Check motor current absorption
Battery terminals loose
Check and tighten battery terminals
Material entangled in main brush
Remove entangled material
Bearings seized
Replace bearings
Excessive brush pressure
Reduce brush pressure (narrower trace)
Battery discharges quickly
Insuffi
cient charge time
Increase charge time
Battery terminals loose or oxidized
Clean terminals and tighten
Summary of Contents for Brava 900 ET
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