Philips 608669 - Manual (Page 9)

OPERATION
9 Viper R Upright Vacuum Cleaner (06–03)
FIG. 13
2. Remove exhaust cover and inspect exhaust filter
(Figure 14). Replace filter if needed.
FIG. 14
3. Inspect brush bristles for wear. If bristles are worn
to 14mm (0.56 in.) or less in length, see Brush
Maintenance.
QUARTERLY MAINTENANCE
(Every 250 Hours of Operation)
Check motors for carbon brush wear. Replace brushes
when worn to a length of 10mm (0.38 in.) or less.
Contact an Authorized Service Center for carbon
brush inspection.
FOR SAFETY: When servicing machine, unplug
cord from wall outlet.
FOR SAFETY: When servicing machine all repairs
must be performed by a qualified service person.
BRUSH MAINTENANCE
If brush bristles are worn to 14mm (0.56 in.) or less,
rotate the bearing blocks to extend brush life as
follows:
FOR SAFETY: When servicing machine, unplug
cord from wall outlet.
1. Remove metal brush shoe from brush base
(Philips screwdriver is required).
2. Remove brush assembly. Grip brush on opposite
side of belt and pull outward.
3. Inspect drive belt(s) for wear; replace if necessary.
4. Rotate both bearing blocks 180
_
and reinstall
brush (Figure 15).
NOTE: Brush bearing blocks are labeled with
numbers. To extend brush life, position label “2”
outwards when reinstalling brush.
1
1 2
2
FIG. 15
5. Replace metal brush shoe after brush is properly
installed.
FOOT LATCH ADJUSTMENT
Foot latch adjustment is required if machine handle
doesn’t lock in the upright position and/or brush motor
continues to run while in the upright position.
Follow adjusting instructions below:
FOR SAFETY: When servicing machine, unplug
cord from wall outlet.
1. Lay vacuum cleaner face down.
2. Loosen foot latch screw,10mm wrench required
(Figure 16).
3. Turn adjustment bushing to realign foot latch,
16mm wrench required. Bushing has an off-center
hole to allow for foot latch adjustment.
Foot Latch
Screw
Adjustment
Bushing
FIG. 16
4. Retighten foot latch screw.
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