Troubleshooting; Section 14 Troubleshooting - Steel City 20520 User Manual

TO PREVENT INJURY TO YOURSELF or damage to the drill press, turn the switch to the OFF position and unplug
the power cord from the electrical receptacle before making any adjustments.
PROBLEM LIKELY CAUSE(S)
Motor does 1. START button not completely depressed. 1. Push green START button in fully (1/2 inch).
not start or
2. Defective switch.
does not come
up to full 3. Defective capacitor.
speed
4. Low line voltage.
5. Defective motor.
Motor stalls or 1. Circuit overload.
circuit breakers
2. Low line voltage.
open frequently
3. Motor overload.
4. Incorrect fuses on circuit breakers.
5. Short circuit in motor; loose connections 5. Inspect terminals in motor for damaged insulation and
Motor running
1. Restricted air circulation due to dust
too hot
2. Motor overload.
Drill bit stalls 1. Belt is incorrectly tensioned.
or slips
2. Drill bit is not securely tightened in
Drill bit or 1. Incorrect spindle speed.
material
smokes or
2. Chips not exiting out of drill hole.
burns
3. Dull drill bit.
Excessive drill bit 1. Bent drill bit.
runout or wobble
2. Drill bit not properly installed in chuck.
Spindle returns too 1. Return spring has incorrect tension.
slow or too fast
Chuck will not
1. Grease, dirt or oil on spindle taper or
stay onto spindle
TROUBLESHOOTING GUIDE
or worn insulation on lead wires.
accumulation.
chuck.
in chuck taper.
SOLUTION
2. Have switch replaced.
3. Have capacitor replaced.
4. Correct low line voltage condition. If machine is
plugged into an extension cord, disconnect and plug
directly into wall outlet.
5. Have motor replaced.
NOTE: #2, #3, #4, and #5 must be done by a qualified
service technician.
1. Reduce circuit load (turn off other appliances).
2. Correct low line voltage condition. Check line voltage
with a multi-meter. If the machine is plugged into an
extension cord, unplug it from the extension cord and
plug directly to the wall outlet.
3. Reduce load on motor, slow down feed rate.
4. Have correct fuses on circuit breakers installed by a
qualified electrician.
shorted wires and have them replaced. Check all
power lead connections.
1. Clean dust and restore normal air circulation around
motor.
2. Reduce load on motor, slow down feed rate.
1. Adjust belt tension. See changing speeds and adjusting
belt tension in "OPERATIONS AND ADJUSTMENTS".
2. Install drill bit properly. See installing and removing drill
bit in "OPERATIONS AND ADJUSTMENTS".
1. Reduce spindle speed. See speed diagram on the
underside of the belt cover.
2. Retract drill bit frequently during drilling operation to
clear chips from hole.
3. Replace or sharpen drill bit.
1. Replace with a straight or new drill bit.
2. Install drill bit properly. See installing and removing drill
bit in "OPERATIONS AND ADJUSTMENTS".
1. Adjust spring tension. See adjusting spindle return
spring in "OPERATIONS AND ADJUSTMENTS".
1. Clean grease, dirt or oil off of spindle taper and chuck
taper. See drill press head and motor assembly in
"ASSEMBLY INSTRUCTIONS".
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