Castex GTC-170 Operator's Manual page 13

2. Remove the scrub head assembly from the
machine.
3. Flush the scrub head under clean water. Run
water in between the squeegee blades to flush out
the vacuum inlets.
B
SCRUB HEAD VACUUM INLETS
A. Squeegee Blades
B. Scrub Head
C. Vacuum Inlets
4. Flush the dispensing tube with clean hot water.
5. Place the scrub head back in place on the
machine. Pull down on the spring located above
the squeegee height adjustment ring and slip the
top of the scrub head into the machine. The spring
will center the scrub head in the vacuum inlet
bracket.
6. Push the side links back onto both sides of the
scrub head. Every 3 months, lubricate pins and
bearings with light oil.
SCRUB BRUSH
The scrub brush should be checked daily to remove
any string or other material wrapped around it. The
scrub brush should be flipped end-for-end every week
to prevent the bristles from taking a "set" and to
increase brush life. The brush should be changed
when the remaining bristles measure 20 mm (0.62 in)
or less in length.
REPLACING SCRUB BRUSH OR ROTATING AN
OLD BRUSH:
1. Unplug the machine and raise the scrub head by
stepping on the scrub head lift lever with your foot.
WARNING: Hazardous voltage. Shock or
electrocution can result. Unplug machine before
servicing.
GTC-170 (07–99)
A
C
A
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2. Loosen the brush plate knob by turning to the left.
Remove the brush plate knob from the side of the
scrub head.
B
REMOVING BRUSH PLATE KNOB
A. Brush Plate Knob
B. Scrub Head
3. Pull the brush plate off the side of the scrub head.
A
REMOVING BRUSH PLATE
A. Brush Plate
B. Scrub Head
4. Pull the brush out of the scrub head.
A
REMOVING BRUSH
A. Brush
B. Scrub Head
OPERATION
A
B
B
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