MasterCool 55500, 55500-220, 55750, 55750-220 Instruction Manual

Instruction Manual

ELECTRONIC LEAK DETECTOR

MODEL# - 55500, 55500-220, 55750, 55750-220

KEYPAD FUNCTIONS AND PARTS

1. Turns unit ON and OFF

2. Reset Sensitivity Level to the level of concentration currently detected

3. Increase Sensitivity

4. Decrease Sensitivity

5. Turns Alarm ON/OFF

6. Turns the LED Light ON/OFF

7. LED UV Blue Light

OPERATING PROCEDURES

TURN ON THE UNIT AND WARM-UP

Start the leak detector by pressing the “ON/OFF” key, the unit will show six red illuminated LEDS to indicate automatic
warm-up stage. After warm-up, the unit will sound an audible beep and a green LED will display indicating the unit is
ready for use.

SENSITIVITY LEVELS

The unit offers six sensitivity levels (1-6). When the unit is turned ON, it will default to Level 5.
To view the sensitivity level on the LED, press either the UP or DOWN arrow key. The LED display will illuminate for
approximately two seconds (One Red LED for every sensitivity level). One illuminated Red LED is the lowest sensitivity
setting, six illuminated LEDS is the highest sensitivity setting.

RESET OPERATION

The primary use for the reset function is to pinpoint the leak source. When the unit detects a leak and goes into alarm,
press the RESET button – Resetting will ignore any leaks at that level or lower and only detect leaks of higher
concentration.

UV LED LIGHT FUNCTION

The UV LED Blue Light can be used to help detect leaks in systems containing Ultra Violet Dye. The light can be activated
by pressing the UV light button. This function will operate with the unit ON or OFF.

WEAR SPECIAL PROTECTIVE UV GLASSES!

MUTE

Pressing this button will toggle beeper sound ON and Off.

IMPORTANT LEAK DETECTION TIPS

• For the best leak detection results, the probe should be moved across the leak detection area at the rate of 1” - 2”
per second (25mm to 50mm per second) and held 1/4” (5mm) away from the surface. An increase in the alarm rate
will indicate a leak.

• When unit is used in contaminated area with certain gas concentration, erratic alarming may occur. For best results in
these types of areas, adjust the unit to the existing environment before inspecting. Pressing the “RESET” button will
adjust the unit to the existing environment.

• If the battery is lower than a level at which the unit can work properly, the unit will illuminate 6 GREEN LEDS after unit
pre warm-up. The unit will not operate unless it is turned off and the battery is recharged.

• It is recommended to fully discharge the battery before you recharge. This will give the Ni-MH battery a longer
life span.

• ALWAYS KEEP SENSOR FREE OF GREASE, DUST OR DIRT. Otherwise, these materials will prevent the airflow from
entering the sensor.

LED LIGHT REPLACEMENT

To remove, pull the LED out of the socket. To install, press the LED into the socket with the long terminal to the outside.

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Warm-Up

Ready for Use

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Lowest Sensitivity Setting

Highest Sensitivity Setting