multicomp pro MP780053 Manual Download Page 3

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CLEANING

• 

Clean the tester with a clean, soft cloth.

• 

Do not use any chemicals, abrasives or solvents that could damage the tester.

MAINTENANCE

1.  Carefully unscrew the battery cap at the rear (flashlight end) of the tester.

2.  Replace the batteries with two AAA 1.5V batteries observing the polarity.

3.  Carefully align the 2 flashlight contact springs on the cap with the contacts above 

the batteries.

4.  Press the cover onto tester and rotate clockwise until engaged. Do not use 

excessive force.

5.  The IP67 dust and water ingress protection level is 

determined by the correct fitting of this cap. 

NOTE:

 When batteries are loaded for the first time, 

please remove the white, rectangular security strip 

before installing the batteries.

•  High Voltage Mode (100 to 1000V AC): 

Place the tip of the tester near an AC 

voltage. If the tester detects voltage within the defined detection range, the green 

LED will turn off, the red LED will turn on, and the sounder will beep rapidly.

•  Low Voltage Mode (12 to 1000V AC):

 Press and hold the 12V button (4). The 

green LED will change to yellow to indicate the tester is in the low voltage mode. 

While pressing the 12V button, place the tip of the tester near an AC voltage. When 

AC voltage is detected, the yellow LED will turn off, the red LED will flash and the 

sounder will beep. 

NOTE:

 The flash rate and beeping rate will increase as the tester gets closer to the 

voltage source. If the tester detects high voltage, it will automatically change over to 

the high voltage mode: The red LED will change to a steady glow and the sounder will 

beep rapidly. The tester cannot determine the actual voltage. The voltage level where 

the tester switches from the low to high voltage mode is effected by insulation type and 

thickness, distance from the voltage source, and other factors.

•  Low Battery Indication:

 Replace the batteries if the green LED does not turn on. 

When the tester is on and the batteries are too low for reliable operation, the beeper 

will beep three times and the green LED will turn off indicating the tester is not 

operational. Replace the batteries to restore operation.

•  Auto Power Off:

 To conserve battery life, the tester will automatically turn off after 

approximately 5 minutes of inactivity. When powering down, the beeper will beep 

twice and the green LED will turn off.

•  Flashlight: 

Momentarily press the Flashlight button (3) to turn the flashlight 

on or off. To conserve battery life, the flashlight will automatically turn off after 

approximately five minutes. The beeper will beep twice as the flashlight turns off.

NOTE:

 If the battery voltage is too low to operate the flashlight, the tester will indicate 

this condition by beeping three times and the flashlight will turn off. The voltage detector 

has it’s own low battery threshold and may remain operational, verify it’s condition before 

using the tester.

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