Magnum Industrial MI-91500 User manual

MODEL NO.: MI-91500
OPERATING MANUAL

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MAINTENANCE
MAGNUM INDUSTRIAL MI-91500 DELUXE 14” BAND SAW
Wheel Alignment
When wheels are aligned, or coplanar, the bandsaw cuts straighter, with much less vibration,
heat, and blade wear because the blade is automatically balanced on the wheel. See Figure
55 to better understand coplanarity. If your bandsaw develops tracking problems that can't be
f ixed by adjusting the upper wheel tracking knobs, then check the wheel alignment before
taking any other steps. Verifying Upper/Lower Wheels are Coplanar
1. DISCONNECT BANDSAW FROM POWER!
2. With the blade on and properly tensioned, hold a straightedge or a self-made "coplanarity
gauge" (Figure 55) close to the center of both wheels. Make sure the straightedge or
gauge fully extends across the wheels as shown in Figure 55.
— If the wheels are coplanar, the straightedge will evenly touch the top and bottom of both
wheels.
— If the wheels are not coplanar, place the straightedge on the lower wheel first (ensuring
that it touches both the top and bottom rim), then adjust the upper wheel tracking knob
to make the upper wheel parallel with the lower wheel.
— If the straightedge does not touch both wheels evenly, the upper wheel needs to be
shimmed or the lower wheel needs to be adjusted.
Shimming Upper Wheel
1. DISCONNECT BANDSAW FROM POWER!
2. Make sure the top wheel is adjusted parallel with the bottom wheel.
3. With the straightedge touching both points of the wheel that does not need to be
adjusted, measure the distance away from the incorrect wheel with a fine ruler
(see Figure 56).
4. Remove the blade from the saw, then remove the wheel that needs to be shimmed.
5. Determine how many shim washers you need to compensate for the distance
measured in Step 3 and place them on the wheel shaft.
6. Replace the wheel, the original washers, and the securing nut.
7. Tighten the blade, then check the wheels. (Coplanar wheels may pull out of alignment
when the blade is tightened.)
8. When the wheels are coplanar, place a mark on each wheel where you held the
straightedge. This assures repeated accuracy every time you adjust your wheels.
Note: When wheels are properly coplanar, the blade may not be centered on the crown
of the wheel, but
it will be balanced.
Adjusting Lower Wheel
Only do this procedure if you cannot make the wheels coplanar with the tracking knob
or by shimming the upper wheel. Make sure the upper wheel is adjusted as close as
possible to being coplanar with the lower wheel before beginning. Do this procedure
with the blade fully tensioned.
To adjust the lower wheel, do these steps:
1. DISCONNECT BANDSAW FROM POWER!
2. Loosen the four hex bolts on the lower wheel adjustment hub (Figure 57).
3. Rotate the wheel adjustment sleeves to tilt the lower wheel as necessary
to make it coplanar with the upper wheel.
4. Tighten the hex bolts to lock the wheel adjustment sleeves in position.

1. Use cross screwdriver to loosen the screws and remove the switch plate.
WARNING!
Always disconnect the machine from the power source before
servicing.
2.Remove the connecting wire of the indicator light by cross screwdriver, and turn the
nut on the indicator light counterclockwise; then remove the indicator light set.
3.Take the 220V indicator light and install at reverse direction by the above steps , and connect the connecting wire.
4.Dismantle the nut of the temperature controlled switch by 14mm wrench, and remove
the temperature controlled switch.

INSTALLATION OF THE FRONT AND REAR MOUNTING
BRACKETS TO THE BANDSAW’S TABLE
INSTALLATION OF THE FRONT AND REAR RAILS
Note: The M6 bolts, washers, lock washers and hex nuts required for this step are
provided with your Excalibur® Universal Bandsaw Rip Fence System. However, if
with your original fence.
Note: The front rail is the wider one of the two rails.

INSTALLATION OF THE FENCE