Troubleshooting Guide - MasterCool 55800 Bedienungsanleitung

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Replacing the Sensor

To replace the sensor, firmly grasp the flexible probe near the end with one hand and use the

other hand to unscrew the nozzle portion from the threaded probe tip in a counter-clockwise di-

rection. Next, remove the metal washer, the rubber washer and the sensor in that order. Observe

the orientation of the key on the sensor being removed. It would be advisable to replace the

filter inside the nozzle at the same time. To remove the microfiltration membrane from inside the

nozzle, the assistance of a long thin object such as an o-ring pick or equivalent will be required.

When installing a new sensor, orient the tab key on the sensor with the keys slot on the probe,

making certain that the 3 pins of the sensor are inserted into the appropriate pins inside the

probe end. Verify that the sensor has been properly inserted into the probe. Next install the

rubber washer as shown in Figure 2, followed by the metal washer. Insert new filter and screw

on the nozzle while firmly holding the probe end with the other hand. DO NOT USE ANY TOOLS in

tightening the tip assembly, firmly hand tighten only.

Leak Test Vial

A leak test vial (Figure 3) is provided with each leak detector for the convenience

of the user. To use the vial, unscrew the cap and place the sensor near the opening

of the vial as shown in Figure 3. Do not remove any material from the Test Vial. At

the conclusion of the vial test, replace the cap and tighten firmly.

QUICK START TIPS ON HOW TO FIND LEAKS

A sudden whipping action of the probe or blowing into the sensor may

cause the leak detector to false alarm. Electronic sensors are incorpo-

rated into the product to detect such activity and to reduce and minimize

such false alarm. In the event such interference is detected, the LCD will

display a flashing INT (interference) legend momentarily then normal

operation can resume after the READY legend appears.

1. When starting the search for leaks, without a general knowledge of the magnitude of the leak,

set the instrument sensitivity to LOW. The LOW sensitivity will enable the unit to locate medium

as well as large size leaks.

2. Slowly move the probe approximately 3/8 inch (9 mm) above the areas of suspected leaking.

Move the probe past the leak to allow the probe to clear if a leak is detected. Do not hold the

probe at the site of a leak. Return the probe to the same area where a leak was detected for

verification.

3. In the event no leaks were found with a LOW sensitivity setting, increase the sensitivity to

MEDIUM and repeat step (2) above.

4. For locating extremely small leaks 0.1 oz/yr (2.8 grams) or less, the HIGH sensitivity scale

should be used. Due to the extremely small leak size, the tip of the probe should be moved as

close to the surface as possible (without physically touching any object). Physical touching

of an object will be detected by the probe sensors resulting in a brief INT (interruption) in the

detector.

5. When probing for a leak in a contaminated environment, the sensor will detect the

contaminated area and will automatically adjust for the new conditions. The LCD will display

CA (contaminated atmosphere) on the screen, after going through the re-calibration process

which will take approximately one minute to complete. During the re-calibration process, all

vertical bars become lighted and sequence down until all bars are extinguished. At that point,

the READY light comes on and the leak detection process can continue.