Hitachi DH 28PD Manual De Instrucciones página 11

(2) Adjusting the dust-collecting unit
(a) Adjusting the position of the dust-collecting
nozzle
Push the nozzle in and adjust to the desired
position. Pull the adjuster on the nozzle in the
direction of the arrow to release the lock and
move until it contacts with the adjuster rod.
Push the adjuster in the opposite direction to
the arrow to lock (Fig. 11).
Nozzle
Ajuster
rod
(b) Setting the hole-drilling depth
Pull the adjuster on the handle in the direction
of the arrow to release the lock, move to the
desired position to determine the stroke, and
push the adjuster in the opposite direction to
the arrow to lock.
The nozzle travel distance when the tip of the
nozzle matches the tip of the drill bit is the hole-
drilling depth (Fig. 12).
Nozzle
Ajuster rod
Dust box capacity
Guide to replacement of dust box
Arrow Ajuster
Fig. 11
Ajuster
Fig. 12
The maximum hole-drilling depth when using
the dust-collecting unit is 85 mm.
When using the dust-collecting unit, it is
possible to use HITACHI drill bits between
5/32" (4 mm) and 23/32" (18 mm) in diameter
and up to 3-15/16" (100 mm) in effective length.
(3) Drilling holes
When drilling holes, hold the rotary hammer so that
the tip of the nozzle contacts with the concrete
surface. Dust-collecting effectiveness is reduced if
the unit is not in contact with the surface (Fig. 13).
(4) Removing dust
Excessive dust in the dust box will reduce dust-
collecting effectiveness. Empty the dust box
regularly.
Push the lever to remove the dust box from the dust-
collecting unit, and empty and clean the box (Fig.
14).
Dust-collecting effectiveness is reduced if the filter
in the dust box becomes blocked.
Use the table below as a guide to replacement of
the dust box.
Lever
Arrow
Drill diameter of 6 mm / depth of 28 mm: 130 holes
Drill diameter of 8 mm / depth of 30 mm: 75 holes
Drill diameter of 12 mm / depth of 50 mm: 20 holes
Dust box has been filled and emptied 100 times
English
Fig. 13
Dus-collecting
unit
Dust box
Fig. 14
11