Harbor Freight Tools CEN-TECH 66400 - Manual (Page 2)

Page 2 For technical questions, please call 1-800-444-3353. SKU 66400
3. This product is not a toy. Do not allow
children to play with or near this item.
4. Position batteries in proper polarity and
do not install batteries of different types,
charge levels, or capacities together.
5. Use as intended only.
6. Inspect before every use; do not use
if parts are loose or damaged.
7. Maintain product labels and nameplates.
These carry important safety information.
If unreadable or missing, contact Harbor
Freight Tools for a replacement.
Important Components and Controls
Axle
Function Switch
MEMORY Button
TEST Button
Display
Axle: Install the selected Adapter on this Axle.
TEST Button: Use to perform Tests.
LCD Display: Information is displayed on this screen.
MEMORY Button: Use to recall last reading, minimum
reading and maximum reading of last test.
Function Switch: Use to select desired measurement:
a. FT/MIN Surface speed in Feet per Minute
b. M/MIN Surface Speed in Meters per Minute
c. CONTACT Rotation speed in RPM
Display
CONTACT RPM
MAX MIN
ft/min m/min
Symbol Meanings:
Battery Symbol: Batteries need to be replaced.
Operating with discharged batteries
may cause erratic results.
MAX: Maximum reading is displayed.
MIN: Minimum reading is displayed.
CONTACT: Unit is ready to start test.
ft/min: Surface speed in Feet per minute.
m/min: Surface speed in Meters per minute.
RPM: Rotational speed in revolutions per minute.