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Summary of Contents for Magnum Industrial MI-76750
- Page 1 MODEL NO.: MI-76750 OPERATING MANAUL...
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Page 2: Safety Rules
SAFETY RULES WARNING: FAILURE TO FOLLOW THESE RULES MAY RESULT IN SERIOUS PERSONAL INJURY. FOR YOUR OWN SAFETY, READ INSTRUCTION MANUAL BEFORE OPERATING THE TOOL. Learn the tool’s application and limitations as well as the specific hazards peculiar to it. 2. - Page 3 14. SECURE WORK. Use clamps or a vise to hold work when practical. It’s safer than using your hand and it frees both hands to operate tool. 15. DON’T OVERREACH. Keep proper footing and balance at all times. 16. MAINTAIN TOOLS WITH CARE. Keep tools sharp and clean for best and safest performance.
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Page 4: Grounding Instructions
suitable support is used. 7. Make sure blade is not contacting the workpiece before turning on the power switch. 8. Always keep hands and fingers away from the blade when the machine is running. 9. Hold workpiece firmly against table and feed into blade at a moderate speed. 10. - Page 5 The plug must be plugged into a matching outlet that is properly installed and grounded in accordance with all local codes and ordinances. Do not modify the plug provided – if it will not fit the outlet, have the proper outlet installed by a qualified electrician.
- Page 6 should be made by qualified service personnel; and after reconnection, the tool should comply with all local codes and ordinances. FIGURE 1 Grounding methods METAL SCREW GROUNDING COVER OF GROUNDED OUTLET BOX Note : In Canada, the use of a temporary adaptor is not permitted by the Canadian Electrical Code.
- Page 7 Table 1 Minimum gage for cord Volta Total length of cord in feet 120V 25ft. 50ft. 100ft. 150ft. Ampere Rating 240V 50ft. 100ft. 200ft. 300ft. More More Than Than Recommended...
- Page 8 A. Switch Plane B. Depth Stop C. Coarse Downfeed Handle D. Table E. Belt Tension Lever F. Control box G. Crank Handle...
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Page 9: Machine Data Sheet
MACHINE DATA SHEET Horsepower………………….…………………………………………………..2HP Voltage…………………………………………………………………………220V Phase………………………………………………………………….……..1-Phase Cycle………………………………………………………………………………60HZ Type…………………………….……………………………………….……..Induction Amps……………………………………………………………………….……6.6A Speed………………………………………………………………………...1720RPM P o we r Tr a n s f e r … … … … … … … … … … … … … … … … … … … B e l t D r i ve Power input …………………………………………………...…………..220V/3PH Swing…………………………………………………….…………………………22”... -
Page 11: Nylon Nut
PARTS LIST FOR MI-76750 Description Description MI-76750-101 PULLY COVER MI-76750-S01 LIGHT MI-76750-102 COVER BASE R/L MI-76750-S02 SELECTOR SWITCH MI-76750-103 SWITCH TABLE MI-76750-S03 STOP BUTTON MI-76750-104 COVER BASE MI-76750-S04 VARIABLE RESISTOR MI-76750-105 HEAD MI-76750-S05 BUTTON,YELLOW MI-76750-106 CONTROL BOX MI-76750-S06 PUSH BUTTON SWITCH... - Page 13 PARTS LIST FOR MI-76750 Description Description MI-76750-201 BELT MI-76750-231 KNOB BOLT MI-76750-202 PULLY MI-76750-232 HANDLE BODY MI-76750-203 SHAFT MI-76750-233 HANDLE MI-76750-204 BEARING 6009ZZ MI-76750-234 1/2" KNOB MI-76750-205 SPACE (I) MI-76750-235 PINION CONNECTOR ASSEMBLY MI-76750-206 SPACE (O) MI-76750-236 FEED SHAFT MI-76750-207...
- Page 14 PARTS LIST FOR MI-76750 MI-76750-311 RETAINING COLLAR...
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Questions and answers
Why does the rpm increase randomly while im drilling?it increased from 370 rpm to 1140 rpm.it then settled at 900rpm
The random RPM increase on the Magnum Industrial MI-76750 while drilling could be caused by several factors:
1. Belt Slippage – The belt (MI-76750-201) may be loose or worn, causing inconsistent speed. Check and adjust or replace the belt if necessary.
2. Motor Issues – The 2HP motor (MI-76750-240) may have electrical fluctuations or faulty wiring. Inspect connections and ensure proper grounding as per the manual.
3. Pulley Malfunction – Worn or misaligned pulleys (MI-76750-202, MI-76750-242) may cause irregular speed changes. Inspect and adjust or replace if needed.
4. Loose Feed Mechanism – Components like the feed shaft (MI-76750-236) or pinion connector assembly (MI-76750-235) may be loose or worn, affecting speed control.
5. Electrical Supply Issues – Unstable voltage or improper grounding can cause speed fluctuations. Ensure the tool is connected to a properly rated circuit as described in the manual.
Checking and maintaining these components should help resolve the issue.
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