Harbor Freight Tools CEN-TECH 66400 - Manual (Page 3)

Page 3 For technical questions, please call 1-800-444-3353. SKU 66400
Set Up
Read the ENTIRE IMPORTANT SAFETY
INFORMATION section at the beginning of
this document including all text under
subheadings therein before set up or use
of this product.
Battery Installation
1.
Battery Compartment
Before use, install four ‘AA’ batteries (not supplied).
2. To install batteries, remove Bolt (18)
from Battery Cover (17).
3. Remove Battery Cover (17) from Back Cover (12).
4. Install four ‘AA’ batteries in battery compartment.
Match battery polarity to battery case markings.
5. Replace Battery Cover (17).
Reinstall Bolt (18). Do not overtighten.
6. Whenever the Low Battery Indicator
appears, replace the batteries.
7. Do not short the battery terminals
together when replacing batteries.
8. Do not dispose of old batteries in fire. Always
dispose of batteries in accordance with
guidelines provided by local authority.
Note: This tool may be powered using an AC adaptor
instead. Plug adapter (not included) into
adapter Socket and into a 120 V~ outlet.
Installing Adapters
1.
Installing Adapter
Before use, the correct Adapter must be installed.
- Cone RPM Adapter (24, 25)
- Funnel RPM Adapter (23)
- Linear Speed Adapter (19, 20)
2. The Adapters are held in place by the Spring Ball
Bearing (26). Slide the Adapter on or off as needed.
Operation
RPM Measurement
1. Attach the Cone or Funnel Adapter to
the Axle (27) as described above.
2. Set Function Switch to CONTACT.
3. Press the tip of the cone to the center of the rotating
shaft to read shaft RPM. Keep the Tachometer’s
Axle in line with the center of the shaft at all times.
4. Press and hold the TEST button.
5. When the cone gains steady rotational speed,
read the RPM on the LCD screen.
Linear Speed Measurement
1. Attach the Linear Speed Adapter Wheel (20)
to the Axle (27) as described above.
2. Set the Function Switch to FT/MIN (Feet per
minute) or M/MIN (Meter per minute).
3. With the Axle parallel to the rotating shaft, touch the
side of the shaft with the side of Adapter Wheel (20).
Maintain light and steady pressure against the shaft.
4. Press and hold the TEST button.
5. When the cone gains steady rotational speed,
read the RPM on the LCD screen.
REV 09c