BGS technic 8557 User manual

SW-Stahl und Werkzeugvertriebs GmbH Tel. [phone] / 46438-0
F56essartSresukreveL ax +49 (0) 2191 / 46438-40
ed.lhatsws@ofni:liaM-EdiehcsmeR79824-D
Art. 8557
Leak Detector for Air Condition
GENERAL
The electronic leak detector simplifies leak detection on cars, trucks, and suitable for other air
conditioning systems and is suitable for refrigerant: R134a, R12, R11, R500, R503, R22, R123, R124,
R502, R404a, R125, AZ 50, HP62, MP39 is adjustable in sensitivity and has a visual and audible
signal upon detection of a leak.
TECHNICAL DATA
adjustable sensitivity
battery life: 30 hours under normal condition
working temperature: 0°C ~ 52°C
working mode: Continuous and no limit
short reaction time
resetting time: 2 seconds
warm-up time: about 6 seconds
size: 22.9 x 6.5 x 6.5 cm
weight: 560 grams
power supply: 3V DV (2x 1,5V)
probe length: 35.5 cm
SAFETY
Read the instructions before using, carefully and keep them in a safe place.
Always wear safety glasses and safety gloves when working on an air conditioner.
Do not loosen connections as long as the climate system is pressurized.
Work on air conditioning systems may be only performed by trained persons.

SW-Stahl und Werkzeugvertriebs GmbH Tel. [phone] / 46438-0
F56essartSresukreveL ax +49 (0) 2191 / 46438-40
ed.lhatsws@ofni:liaM-EdiehcsmeR79824-D
INSTRUMENT
1. Sensor
2. Buzzer
3. LED Battery Indicator
4. Indicator Concentration
5. Mute
6. Higher Sensitivity
7. Reset
8. Lower Sensitivity
9. ON / OFF
10. Battery Check
11. Battery
BATTERY
Note: please properly fix the battery according to the picture above.
Battery Voltage Indication
The leftmost LED is the indicator for the two-color voltage.
Green-- Battery voltage is normal, sufficient for proper operation.
Orange--Battery voltage is approaching the lower threshold for operation, replace as soon as
possible.

SW-Stahl und Werkzeugvertriebs GmbH Tel. [phone] / 46438-0
F56essartSresukreveL ax +49 (0) 2191 / 46438-40
ed.lhatsws@ofni:liaM-EdiehcsmeR79824-D
AUTOMATIC CIRCUIT/RESET FEATURE
This item features an Automatic circuit and a Reset function key that set the unit to ignore ambient
concentrations of refrigerant.
Automatic circuit: Upon initial power on, the unit automatically set itself to ignore the level of
refrigerant present at the tip. Only a level, or concentration, greater than this will cause an alarm.
Reset Feature: Pressing the RESET key during operation performs a similar function. When the
RESET key is pressed, it programs the circuit to ignore the level of refrigerant present at the tip.
The unit can be moved to fresh air and reset for maximum sensitivity. Resetting the unit with no
refrigerant present (fresh air) causes any level above zero to be detected.
Whenever the unit is reset, the LED (except the leftmost power indicator) will all turn off.
NOTE
Make a leakage test after any repair or service of climate systems.
SENSITIVITY ADJUSTMENT
The unit features sensitivity adjustment and can be adjusted during the course of detecting.
Press the button (▲Sensitivity) causes an increase of sensitivity.
Press the button (▼Sensitivity) causes an decreases of sensitivity. It does not mean, when to select,
the higher the flexibility is adjusted, the better the unit will work, because if the air is not fresh,
selecting higher flexibility will cause an improper alarm.
LEAK ALARM
When the leaked gas is detected, the buzzer will respond loudly according to the leaked quantity and
the number of the leak indicators will change as well.
OPERATING INSTRUCTIONS
Switch the unit on by pressing the ON/OFF key. The leftmost indicator will light with intermittent
humming noise.
Verify the battery level by observing the constant power indicator.
Select appropriate sensitivity and the unit can be adjusted at any time, which does not intemupt
detection.
Press RESET key to detect 6 seconds later after the unit is switched on.
Please reset the unit far away from the leak source so as to ensure the unit to detect accurately
with firm reliability.
OPERATING TIPS
Adjust the sensitivity up, only when a leak can't be found. Adjust the sensitivity down only when
resetting the unit does not allow you to "home in" on the leak.
When the buzzer alarms for leak, if the probe is remained at the part being detected long enough,
the circuit will equalize it.
In areas that are heavily contaminated with gas, the unit may be reset to block out ambient
concentrations of gas.
In windy areas, even a large leak can be difficult to find. Under these conditions, it its best to
shield the potential leak area.
Be aware that the detector may alarm if the sensing tip comes in contact with moisture and/or
solvents, therefore, avoid contact with these when leak checking.

SW-Stahl und Werkzeugvertriebs GmbH Tel. [phone] / 46438-0
F56essartSresukreveL ax +49 (0) 2191 / 46438-40
ed.lhatsws@ofni:liaM-EdiehcsmeR79824-D
RECOMMENDED PROCEDURE
Note: On Automotive A/C Systems leak test with the engine not in operation.
The air conditioning or refrigeration system should be charged with sufficient refrigerant to have a
gauge pressure of at least 340 kpa (50 psi) when not in operation. t temperatures below 15"C
(59"F), leaks may not be measurable, since this pressure may not be reached.
Take care not to contaminate the detector probe tip if the part being tested is contaminated. If the
part is particularly dirty, or condensate (moisture) is present, it should be wiped off with a dry shop
towel or blown off with shop air. No cleaners, or solvents should be used, since the detector may
be sensitive to their ingredients.
Visually trace the entire refrigerant system, and look for signs of air conditioning lubricant leakage,
damage, and corrosion on all lines, hose, and components. Each questionable area should be
carefully checked with the detector probe, as well as all fittings, hose to line couplings, refrigerant
controls, service ports with caps in place, brazed or welded areas, and areas around attachment
points and hold-downs on lines and components.
Always follow the refrigerant system around in a continuous path so that no areas of potential
leaks are missed. If a leak is found, always continue to test the remainder of the system. At each
area checked, the probe should be moved around the location, at a rate no more than 25 to 50
mm/second and no more than 5 mm from the surface, completely around the position, which
could reach the best effect and when there's a rapid buzzing noise, it means the leak point is
found.
At this time, the instrument should be moved away and be readjusted to appropriate position so
as to locate the specific leak point.
An apparent leak shall be verified at least once as follows:
a) Blow shop air into the area of the suspected leak, if necessary, and repeat the check of the
area. In cases of very large leaks, blowing out the area with shop air often helps locate the exact
position of the leak.
b) First move the probe to fresh air and reset. Then hold the probe tip as close as possible to the
indicated leak source and slowly move around it until the leak is confirmed.
Note on car air conditioners:
Leak testing of the evaporator must be with switched on fans before. Testing as follows: Start the
engine, air-conditioning and blower fan on and let run at the highest level for 3 min..
Air conditioning and engine off, leave the blower fan for about 15 seconds at the highest level and
then switch off. The leak detector probe tip through the opening of blower resistor and vents introduce
into the blower / evaporator housing. Make sure that the blower / evaporator housing is dry to avoid
false readings. In case of leakage the item will be sounds a alarm.
MAINTENANCE
Appropriate maintenance to the unit is really very critical and please carefully follow.
The instructions below in order to reduce performance problems and enhance the life of the unit.
Warning: Turn unit off before removing the sensing tip. Failure to do so may result in a mild electrical
shock. Keep the sensing tip clean: Prevent dust, moisture and grease build-up by utilizing the
provided tip protector. Never use the unit without the protector in place.
Before using the unit always inspect the tip and protector to see that they are free of dirt and grease.
To clean:
1. Remove protector by grasping and pulling off tip.
2. Clean protector with shop towel and/or compressed air.
3. If the tip itself is dirty, it can be cleaned by being immersed in a mild solvent, such as alcohol, for a
few seconds, and then using compressed air and/or a shop towel to clean.
Note: Never use solvents such as gasoline, turpentine, mineral spirits, etc ... as these will leave a
detectable residue and desensitize your unit.
Hinweis: Verwenden Sie niemals Lösungsmittel wie Benzin, Terpentin, Waschbenzin,
etc., diese können Rückstände hinterlassen, auf die das Gerät anspricht.
DISPOSAL
Never recycle batteries or the product with your domestic waste. Collect worn out
batteries or electrical appliances and recycle them at your local collecting point.