SERVICE & ROUTINE MAINTENANCE
CAUTION - maintenance and repairs
must be carried out by authorized
personnel only. To prevent injury, always
remove the power cable from the power
supply before undertaking any work on
the machine. Do not operate this
machine unless it is fully assembled and
all guards are in place. Use Hiretech
genuine spare parts only.
General
Visual Inspection
1.
Always make a list when first examining the
machine, to remind you of parts or action
needed on completion of routine maintenance.
2.
The HTF-2 Floor Sander is subject to high speeds
and vibration, all screws should be fitted using a
suitable thread lock compound.
3.
The HTF-2 Floor Sander needs no lubrication
during routine servicing.
4.
Always ensure that the electrical supply is
disconnected before starting any routine
servicing or repair.
5.
Follow a regular schedule of routine
maintenance to keep your HTF-2 Floor Sander
in good working.
1.
To clean the machine and remove dust, use a
vacuum cleaner to avoid damage and prevent
inhalation of dust.
2.
Examine all external parts of the floor sander
making sure there is no damage. Check the
condition of the Dust Brush and Bumper around
the base of the floor sander, both of which should
be undamaged and in good condition. Check
that the Handle Yoke unlocks and moves freely in
its operating position.
3.
Examine the sanding pads. These should be
undamaged and in good condition.
They
should fit firmly to the fixing posts and pivot
slightly forward and back.
4.
Examine the power cable for damage. If the
outer insulation shows the slightest of abrasions
or the inner conductors are exposed then the
cable must be replaced. The cable must not be
repaired with tape or insulation sleeve.
5.
Ensure all labels are sound, readable and
secure.
6.
Check that the rear wheels are sound and
moving freely. If a wheel is found to be loose or
damaged then the floor sander will not sand or
handle properly. Check and reset the wheels (see
Setting the Wheels on page 8). Replace
damaged wheels.
7.
Check the condition of the Dust Bag Frame
making sure that it hinges down in to its
operating position and locks securely when
stowed.
1.
Remove the handle and lay the floor sander on
its face. Remove the sanding pad if fitted and
inspect the underside for the build up of dust or
pieces of abrasive. Clean as required.
2.
Inspect the condition of the Dust Brush.
The
brush should be replaced if damaged or badly
worn.
1.
The dive gears and drive belt do not require
maintenance under normal operating
conditions.
1.
The HTF-2 Floor Sander features sealed for life
bearings which do not require any lubrication.
In the unlikely event that a bearing has to be
replaced use a Hiretech genuine spare part only
as the grease contained in the bearings is
special. A standard bearing is not suitable and
may result in further damage.
1.
The motor must be kept clean and free from
grease and dust.
2.
The motor brushes must be checked regularly.
Replace ALL FOUR motor brushes when any one
brush has worn to 12mm ( / ”) or less in length.
Brushes MUST slide freely in the brush holders.
There is no need to remove or disconnect any
internal leads when changing the brushes, only
the small braided shunt (pigtail) connected to the
motor brush is disconnected to release the brush.
3.
To replace the motor Brushes ;
(1)
Remove the four screws from the Motor
Cover and lift the cover off.
(2)
Remove the four Spring Brushes and set to
one side. The springs are removed by
pushing the spring tag in towards the
brush and lifting out.
(3)
Using a cross recess screwdriver remove
the four brush shunt (pigtail) retaining
screws and lock washers.
(4)
Remove the four brushes.
Dust Control
Drive
Lubrication
Care of Motor
15
32
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