User guide

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12
maintenance / clearing blockages
With flat sides of turbine retainers (A) pointing down, slide
retainers into grooves (B) in tool housing and snap into
place (Fig.6/18).
Replace brushbar, belt guard, and bottom plate as
described previously.
7. Clearing blockages
IMPORTANT: Disconnect cleaner from electrical
outlet before attempting to clear blockages.
Low suction or pick up may be due to a blockage in the
system. Refer to the following steps to check for blockages
continuing with each step until the blockage is found:
Check fullness of dirt container; empty if needed.
Checking Airflow Path
Plug cleaner in and turn ON. Check for suction at end of
hose (A) (Fig.7/1). If there is suction, continue with next
step.
Turn cleaner OFF and unplug.
Check connection at hose tube (A); remove any blockage
(Fig7/2).
Checking Airflow Path Through Hose Inlet Tube on
Back of Cleaner
Turn cleaner OFF and unplug.
If blockage can be seen in tube (A), remove 5 screws using
a crosshead screwdriver. Pull tube from cleaner, remove
blockage (Fig.7/3).
Fig.6/18
Fig.7/1
Fig.7/2
!
A
A
A
B
U90-M3 & M4 Series User Guide v1.4.qxd:UG 15/7/10 15:37 Page 12