Troubleshooting Guide; Replacement Parts - MasterCool 55800 Manuel D'opération

The unit is also designed to detect leaks in the presence of a background contamination. In order
for the unit to make the determination that there is a contaminated atmosphere, it must have
stored data for the sensor in absolute clean air. This data is determined at production and stored
in memory.
If a sensor is replaced or if the unit displays 'CA' when the operator is 100% confident that
there is no contaminate in the air*, then a manual calibration can be performed by the following
sequence. Hold down the MUTE key simultaneously with the Peak key until a "CL" is displayed
along with a white outline of all the bar symbols. This procedure can take up to a minute or two.
This will store a new set of clean air data into the unit. This new data will now be used each time
the unit is powered up.
*Beside HFC's, contaminated air can also be caused by the presence of other contaminates such
as alcohol, perfumes, hand sanitizers etc. The manual calibration should be done in a very clean
environment such as outdoors.
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 incorporated into the product to detect
such activity and to reduce and minimize such false alarm. In the event such interfer-
ence 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.

TROUBLESHOOTING GUIDE

With the exception of batteries and the sensor, the internal parts of the 55800 are not field
serviceable. If you experience an issue with the product, refer to the troubleshooting table
below.
ISSUE
The unit will not power up
The unit powers up briefly then
shuts OFF
The unit alarms continuously
without stopping
E2 Code Appears on LCD
E8 Code Appears on LCD
E9 Code Appears on LCD
*Power down the unit and retry power up several times.

REPLACEMENT PARTS

Replacement parts and accessories for the 55800 Leak Detector are available through the same
dealer from whom you purchased the instrument or from Mastercool Inc.
REF. # DESCRIPTION
1. Blow Molded Plastic Box
2. Leak Test Vial
3. Battery Cover
4. Sensor
PROBABLE CAUSE
1) Batteries are not installed Install new batteries. Follow
2) Batteries are installed
improperly
Batteries are very weak
The area is contaminated
or there are contaminants
nearby
Clogged tip or fan not
working
Bad Sensor
Missing Sensor
www.mastercool.com
SOLUTION
instructions on page 3.
Check battery installation
polarity on page 3.
Install new batteries. Follow
instructions on page 3.
First reduce the sensitivity of the
unit. If the unit still alarms in the
lowest sensitivity, turn unit off.
Clean the area of contaminants
and try again.
Unscrew probe tip, remove filter
from inside with an o-ring pick
and blow shop air through the
small holes in the tip. Re-as-
semble probe assy and check
unit. If problem continues, return
unit to place where purchased.
Replace sensor follow
instructions on page 4.*
Replace sensor follow
instructions on page 4.*
MC PART #
55800-PB
55800-VL
55800-BATCOV
55800-SEN
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