8
2. OPERATION
The Model 229-2 is designed to prevent accidental shock when properly
used. However, no engineering design can make an Instrument safe when
used carelessly. Therefore, this manual must be read completely before
making any measurements. Failure to do so can result in a serious or fatal
accident.
This section of the manual contains information required to use and operate
the Model 229-2 in a safe and proper manner.
2.1 Safety Precautions
The Model 229-2 is designed to be used only by personnel qualified to recog-
nize shock hazards and trained in the safety precautions required to avoid
possible injury. Refer to SHOCK HAZARD definition which is located on
page 3 of this manual.
1. Do not work alone when making measurements where a shock hazard
can exist. Notify a nearby person that you are intending to make such
measurements.
2. Remember, voltages might appear unexpectedly in defective equipment.
An open bleeder resistor can result in a capacitor’s retaining a danger-
ous charge. Remove all power and discharge all capacitors in the circuit
being measured before making connections or disconnections.
3. Locate all voltage sources and accessibility paths prior to making any
measurements or connections.
4. For your own safety, before each use, inspect the test leads, and connec-
tors for cracks, breaks or crazes in the insulation. If defective, destroy and
replace immediately.
5. Hands, shoes, floor and workbench must be dry. Avoid measuring under
humid, damp or other environmental conditions that could affect the di-
electric withstanding voltage of the test leads or the Instrument.
6. For maximum safety, do not
touch test leads, circuit, or Instrument while
power is applied to the circuit being measured.
7. Do not use test leads which differ from those originally furnished with the
Instrument.
8. Do not float any measuring terminal more than the rated circuit to ground
voltage as specified in the Table 1, item 9.
!
To Next Page
Loading...
