Bacharach H-10PA Manuale utente

H-10PARefrigerant

LeakDetector

Congratulations! You have just

purchased the most versatile, high

performance service leak detector

available in the industry today. This

product has all the capability of

the proven H10PM model except

it does not contain the recharge-

able battery and charger. The

H10PA is powered by an external

mobile 12 VDC battery using the

included battery clamp and/or

cigarette lighter power cable. This

provides for ongoing testing with-

out the need for frequent overnight

recharge as is required with the

H10PM.

It will detect refrigerants with a

sensitivity to effectively pinpoint

both small and large leaks quickly

and efficiently. We encourage your

review of this manual to assure

satisfactory performance and a

long service life.

For technical support call:

1-800-736-4666

How the H10PA Works

The sensor in the H10PA uses a posi-

tive ion emission technology, commonly

known as the heated diode. It is very

sensitive to only halon substances

(refrigerants) making this product highly

resistive to false alarming, while retaining

superior sensitivity for pinpointing the

most difficult to find refrigerant leaks.

A pump inside the unit draws air

through the sensor. Any presence of

halogen gases (such as refrigerants)

causes an ionized current to flow that

sounds a speaker and illuminates a

neon light in the probe. Sensitivity to

pinpoint both large and small leaks can

be controlled by adjusting a three-posi-

tion switch.

Panel Operating Controls

Before you use the unit for the first time:

Remove the sticky-label disc from the

cap of the CALIBRATION REFERENCE bottle.

This disc can be reused to help seal the

vial when the leak detector is not in use

or it can be discarded. DO NOT attempt

to unscrew the cap; you may damage

the bottle! It is filled with enough refriger-

ant to last approximately six months.

Power

Plug Sensor

Sensor Heat

Adjustment

(turn clockwise

to increase heat)

Power

Switch

Sensitivity Switch

Calibration

Reference

Bottle

Sensor “Set”

Indicators

Mode

Switch

Operating Instructions

1. Using the included cables, connect

to the 12VDC Battery and plug cable

into the unit.

2. Slide LEAK SIZE switch to its SM (small)

position.

3. Slide POWER switch to its ON position.

4. Check for sufficient airflow by point-

ing the probe tip toward the floor and

observing the red airflow ball in the

probe tip. It should be floating inside

the probe tip.

5. Allow two minutes for the sensor to

warm up; the flashing probe light and

sound indicator will idle at 2–3 clicks

per second.

6. Test operation by quickly touching

the top of the CALIBRATION REFER-

ENCE bottle (make sure sticky label is

removed). The unit should respond

with a rapid flash rate and sound ver-

ifying correct operation and optimum

sensitivity for detecting all refrigerant

leaks. During product life, if unit does

not respond correctly, see Section

Sensor Heater Adjustment.

Setting the Sensitivity

Small (SM) switch position is the

highest sensitivity. The unit will indi-

cate 0.1 ounce or greater leak rates

and is used for fluorine based gases

like R134a and SF6. This position also

assures highest repeatability for locating

0.5 ounce or greater R134a leaks (per

SAE Std. J1627 moving probe test

conditions). It must always be used to

verify performance and calibration when

using the CALIBRATION REFERENCE bottle.

Medium (MED) position sensitivity is

used for chlorine and chlorine based

gases like R12, R22, R123, etc. and will

indicate a 0.1 ounce per year or greater

leak rate. This position supports finding

a 0.5 ounce or greater leak during the

moving probe test as defined in SAE

J1627. It is also useful for locating larger

R134a leaks of one ounce or greater.

Large (LARGE) position is used to zero

in on gross leaks of any refrigerant. If

a large leak is suspected, set mode

switch to MANUAL. Adjust BALANCE knob

for a sound of 2–3 ticks per second

and slowly approach the test equip-

ment/area. Continue to turn the BALANCE

knob counterclockwise as necessary to

maintain 2–3 ticks per second. As you

approach the vehicle or equipment, the

gas concentration will increase, causing

an alarm condition. Each time an alarm

occurs, re-adjust the BALANCE control.

Continue this process until the leak is

located. Blowing out the test site with

shop air may enable you to locate the

leak more quickly.

Note: After a large leak is located and

repaired, blow out the area again with

shop air, set the unit on the small leak

sensitivity and double check equipment

for small leaks.

Warning! Personal Injury Hazard.

Do not use the H10PA in an explo-

sive or combustible atmosphere. The

ambient atmosphere is drawn through

the probe and through the sensor,

which operates at approximately

1472°F (800°C). The resulting hot

mixture of air and combustible gas

could explode.

NOW…

YOU’RE READY TO FIND THE LEAK!

(You have a choice of two modes)

Auto Mode

This mode is preferred because the

unit effectively auto zeros to block out

background levels of refrigerants and

changes in background contamination.

This greatly reduces and/or eliminates

false alarms while retaining sensitivity

to quickly locate small or medium size

leaks. Pinpointing leaks in this mode

requires continuous probe movement.

(We recommend 2 inches per second

as specified in SAE J1627 and J1628).

If the probe remains on the leak the

unit will zero out the leak, going into

the idle 2–3 ticks/second condition.

Briefly moving the probe away from the

leak for 1–2 seconds permits the fast

auto recovery to re-establish sensitivity.

Returning to the leak site, the unit will

alarm again. The unit will reliably and

repeatedly pinpoint the leak with each

pass over the leak site.

If a large gross leak is present, the

auto zero circuit may reduce sensitivity

to an unacceptable level to find small

and medium sized leaks. If this condition

exists, the manual mode will enable you

to pinpoint the large leak. The manual

mode is also an effective means to

determine if a gross leak of any refrig-

erant exists prior to searching for leaks

(see Section Setting the Sensitivity).

Manual Mode

In the Manual Mode the auto zero

function is disabled, causing the unit

not to zero out the leak if the probe is

held at the leak site. This mode may

require frequent re-adjustment of the

BALANCE control to maintain the required

2–3 ticks per second that indicates

proper adjustment and calibration for

all three sensitivity switch positions. In

this mode you may notice sensitivity

is slightly greater (10–20%) than the

100% auto zero mode. This is normal.

Sensor Heater Adjustment

The sensor’s

HEATER ADJUSTMENT con-

trols the sensitivity of the unit. A heat

setting that is too high causes instability

due to excessive sensitivity and short-

ens sensor life. The Low, OK, and High

LED indicators in conjunction with the

HEATER ADJUSTMENT and the CALIBRATION

REFERENCE bottle, is a unique system

for setting the correct sensor heat (sen-

sitivity) for optimum calibrated perfor-

mance and long sensor life.

The unit is preset for optimum initial

operation. To check the setting, slide

the LEAK SIZE switch to its SM (small)

position, turn ON the unit and allow it

to stabilize (approximately 2 minutes).

When stabilized, at 2–3 clicks per sec-

ond, briefly touch the CALIBRATION REFER-

ENCE bottle with the probe (after remov-

ing the sticky label disc from the top of

the bottle). If adjusted properly, the red

Low LED light will go out and the green

OK LED will briefly light. This indicates

the sensor heat/sensitivity is adjusted

for optimum performance.

If the red LED Low light remains on

when you briefly touch the bottle, the

HEATER ADJUSTMENT is set too low and

must be turned slightly clockwise; after-

which, allow the unit to stabilize about

one minute and retest. If necessary,

continue to rotate the HEATER ADJUSTMENT

clockwise and retest until the green OK

LED briefly comes on. If during this test

the red High LED comes on, the heat is

set too high and the HEATER ADJUSTMENT

should be turned slightly counterclock-

wise. Allow the unit to stabilize and then

repeat the test. Continue this procedure

until proper green OK LED operation

has been achieved.

NOTES:

A. After initial check for correct adjust-

ment, disregard Low, OK, High LED

indication. Their indication is meaning-

less during subsequent leak testing

activity.

B. Check for proper heat adjustment

the first time the unit is turned on and

repeat on a daily basis. This assures the

product is calibrated for the correct sen-

sitivity in all leak size switch positions

for your daily test activity.

C. Frequency of sensor heat adjustment

is a function of how much exposure the

sensor has to refrigerant. Adjustment

may be required every 2 weeks for

heavy duty service and once every few

months for light duty service. The sen-

sor LED status indicators will accurately

tell you when adjustment is necessary

during the daily check.

D. It is time to replace the sensor when

the HEATER ADJUSTMENT is fully clockwise

and the green OK LED will not come

on. Before replacing the sensor, turn the

HEATER ADJUSTMENT fully counterclock-

wise; plug in a new sensor; then test

and adjust as previously described to

correctly calibrate the instrument.

Application Notes

1. Conduct a leak check in a logical pro-

gression through the entire system to

locate all leaks. If surfaces are particu-

larly dirty, or wet, wipe them off with a

clean, dry cloth to reduce filter clog-

ging and extend sensor life. DO NOT

allow the unit to ingest moisture. Use

of the supplied rubber probe tip helps

prevent moisture from being drawn

into the unit. Check ports for moisture

before inserting the probe.

2. After locating and repairing any leaks

requiring the use of the LARGE setting,

switch to the MEDIUM setting and verify

the system is free of leaks. For HFC

refrigerants only (such as R134a), you

also must verify the system is leak free

using the SMALL setting. For CFC and

HCFC systems (such as R11, R12,

R22, R123), the MEDIUM setting is

sufficient to verify that the system is

free of leaks that require repairing.

Maintenance

To protect the air pump from damage

due to foreign particles and moisture,

replace the filter as it becomes dirty. With

moderate use (15 to 30 minutes a day),

it is recommended that the filter be

replaced once a month. In dirty environ-

ments or with heavy use, replace the

filter more often. Always replace the filter

when it is visibly dirty or wet.

Replacing the Filter:

1. Remove the black rubber probe tip.

2. Pick out the filter with a pin or tweezers.

A fine screen will remain in the tip of

the probe.

3. Insert the new filter in the probe tip.

Make sure that the filter is firmly

seated against the fine screen.

4. Replace the rubber probe tip.

Replacing Airflow Ball Indicator:

1. Remove the clear plastic section of

the probe tip by gently pulling and

twisting the white grip.

2. Turn the probe tip upside-down and

tap on it to remove the old airflow

indicator ball.

3. Insert the new airflow indicator bal

into the tip.

Filter

Rubber

Probe Tip

Airflow

Indicator Ball

Probe Tip

Caution: Equipment Damage

Hazard. Submerging the probe in

liquid will damage the vacuum pump.

Exposing the probe to a stream of

refrigerant coming out of a tank will

severely reduce the life or destroy the

sensor. The life of this unique rare

earth sensor is directly proportional to

the amount of refrigerant that passes

through it. With normal intermittent

service, the sensor can last for one

year or longer. Exposure to high con-

centrations of refrigerant may require

adjustment of sensor heat. To check,

repeat the test procedure in the

“Heater Adjustment” section.

4. Reattach the probe tip to the probe

assembly.

Replacing the Sensor:

The sensor is a disposble plug-in unit.

Replace it when the H10PA no longer

responds to the CALIBRATION REFERENCE

bottle, even with the sensor HEATER

ADJUSTMENT turned fully clockwise

(make sure the CALIBRATION REFERENCE

bottle contains some refrigerant).

1. Set the POWER switch to OFF.

2. Unplug the power cord if the unit

is plugged in and open the sensor

cover.

3. Allow the sensor to cool before handling.

4. Unplug and discard the sensor.

5. Insert a new sensor and close the

sensor cover.

6. Turn the sensor HEATER ADJUSTMENT to

its full counterclockwise position.

7. Apply power to the unit and reset

the HEATER ADJUSTMENT (see Section

Sensor Heater Adjustment).

Warning! Personal Injury Hazard.

Sensor surface temperature may reach

390°F (200°C) during operation, and may

cause a burn if not allowed to cool.

Indice

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