10
the stop bracket.
4. Place a machinist's square against the table and
belt or platen.
5. If adjustment is required, turn the adjusting screw
(Figure 20) until the table is exactly square to the platen.
6. Check
the pointer. If it is not on 0
o
, loosen the
pointer screw and adjust the pointer until it is on 0
o
.
7. Tighten the pointer screw.
8. Loosen the table lock handle and tilt the table until its
stop contacts the 45
o
stop position.
9. Using a machinist's protractor set on 135
o
(90
o
+
45
o
) adjust the screw until the table and platen are in
correct adjustment. DO NOT reset the pointer after this
operation.
Figure 19: Using an adjustable square to check and
set miter slot parallelism on the belt table.
Figure 20: Location of adjustment (socket head) screws
and pointer attachment screw for table angle
adjustment.
Figure 21: Locations of stop lugs and stop bracket for zero
and 45
o
table positions.
Adjusting or Replacing the Platen
1. Disconnect the electrical power to the machine to
prevent accidental start-ups.
2. Remove the top cover, side guard and belt as outlined
in
Belt Replacement
.
3. Remove the table by unscrewing the locking handling
and lifting the complete table assembly, from the machine.
4. If you are replacing the platen, remove the three screws
that hold it to its mount -- then install the new platen and
replace the mounting screws finger tight.
5. If you are only adjusting the platen, loosen the three
mounting screws to allow adjustment.
6. Using a straight edge as shown in Figure 22, adjust the
platen height until it is 1/32 inch higher than the crown of
both the drive and idler drums.
7. Tighten the platen adjustment screws.
8. Reinstall the table and belt.
9. Check and adjust, if necessary, the tracking of the belt
according to instructions in
Belt replacement
.
10. Reinstall the guards and covers.
11. Check and adjust the table angles and miter slot
squareness, according to table adjustment instructions in
this manual.
12. Reconnect the electrical power to the machine.
Figure 22: Method for adjusting height of platen above
drive and idler drums.
Electrical
Caution:
The sanders are available in a wide variety of
electrical configurations to meet the needs of the
purchaser with respect to power available and compliance
with electrical codes. Each machine is tested at the
factory for operation before shipment and the power cord
is tagged with the power requirements for the machine, as
shipped.
HOWEVER, before attempting any electrical
hookup, you should be certain:
1. The electrical characteristics of the service branch
match the requirements of the motor.
2. The service branch is equipped with wires of the
required gauge or size.
3. The branch circuit intended for the machine is protected
with a time delay fuse or circuit breaker with a rated
amperage just slightly greater than the full load current of
the motor.
CAUTION:
All electrical service work on your
Wilton sander should be performed by a qualified,
licensed electrician who is familiar with all safe standard
electrical installation practices and all applicable electrical
Summary of Contents for BTM250
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