21
To perform a phase sequence test:
1. Turn the rotary switch to the
position.
2. The primary (upper) display shows:
• 123 for correct phase sequence.
• 321 for reversed phase sequence.
• Dashes (---) instead of numbers if insufficient voltage is sensed.
MAINTAINING THE TESTER
Cleaning
Periodically wipe the case with a damp cloth and mild detergent. Do not use abrasives or
solvents.
Dirt or moisture in the terminals can affect readings.
To clean the terminals:
1. Turn the meter off and remove all test leads.
2. Shake out any dirt that may be in the terminals.
3. Soak a new swab with alcohol. Work the swab around each terminal.
Testing and Replacing the Batteries
Battery voltage is continuously monitored by the tester. If the voltage falls below 6.0 V
(1.0 V/cell), the low battery icon
M
appears on the display, indicating that there is minimal
battery life left. The low battery icon continues to appear on the display until you replace
the batteries.
W
Warning
To avoid false readings, which could lead to possible electric shock or personal injury,
replace the batteries as soon as the battery icon (
M
) appears.
Be sure that the battery polarity is correct. A reversed battery can cause leakage.
Replace the batteries with six AA batteries. Alkaline batteries are supplied with the tester
but you can also use 1.2 V NiCd or NiMH batteries. You can also check the battery charge so
that you can replace them before they discharge.
W
Warning
To avoid electrical shock or personal injury, remove the test leads and any input signals
before replacing the battery. To prevent damage or injury, install ONLY specified
replacement fuses with the amperage, voltage, and speed ratings shown in the General
Specifications section of this manual.
To test the batteries:
1. Turn the rotary switch to the V position.
2. Press F3 > 2 seconds to initiate the battery test. The Voltage function display clears and
is replaced by the measured battery voltage in the secondary display for 2 seconds, the
Voltage function display then returns.
