Bacharach H-10PM User manual

Congratulations! You have just

purchased the most versatile, high

performance service leak detector

available in the industry today. It

will detect refrigerants with a sen-

sitivity to effectively pinpoint both

small and large leaks quickly and

efficiently.

We encourage your review of this

manual to assure satisfac-

tory performance and a long

service life.

Refrigerant

Leak Detector

H-10PM

WARNING: This deviceis not to be

used in any application that is beyond its

intended purpose or beyond the scope of its

specifications. For details on appropriate

use, refer to the rest of this manual. Before

risking equipment damage or personal

injury, contact Bacharach if you are unsure

of the validity of a particular combustion

analyzer application.

How the H-10PM Works

The sensor in the H-10PM uses positive

ion emission technology, commonly known

as a heated diode. It is very sensitive to only

halon substances (refrigerants) making this

product highly resistive to false alarming,

while retaining superior sensitivity for pin-

pointing the most difficult to find refriger-

ant 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 setting the three

position Leak Size switch.

Panel Operating Controls

Charger

Plug

Battery

Charge

Light

Calibration

Reference

Bottle

Sensor

Leak Size

Switch

Manual Balance

Control

Heater

Adjustment (turn

clockwise

to increase heat)

Power

Switch

Low Battery

Indicator

Heater Adjust

LEDs

Mode Switch

MANUAL /

AUTO

Before you use the unit the first time . . .

1. 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 refrigerant

to last approximately six months.

2. With the Power switch in the OFF posi-

tion, charge the internal battery using the

furnished wall adapter. Charge time is

8–10 hours or, until the red Full Charge

LED turns green.

Adjusting the Sensitivity

Set the Leak Size switch as follows:

SMALL switch position is the highest sen-

sitivity. The unit will indicate 0.1 ounce or

greater leak rates and is used for fluorine

based gases like R134a and SF6. This posi-

tion also assures highest repeatability for

locating 0.5 ounce or greater R134a leaks

(per SAE Std. J1627 moving probe test con-

ditions). It must always be used to verify

performance and calibration when using the

Calibration Reference Bottle.

MEDIUM switch position 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 switch position is used to zero

in on large leaks of any refrigerant. If a

large leak is suspected, switch unit to its

Manual mode. Adjust the Manual Balance

control for 2-3 ticks per second and slowly

approach the test equipment/area. Adjust

the Manual Balance control counterclock-

wise 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, readjust the Manual

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 the 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.

Operating Instructions

1. Slide mode switch to AUTO position.

2. Slide power switch to ON position and

sensitivity switch to SMALL position.

3. Check Low Battery LED. If it glows red,

the battery needs charging, or you may

operate the unit from a 12VDC source, or

with optional AC Adapter of the correct

voltage and current.

4. Check for sufficient airflow by pointing

the probe tip toward the floor, covering

it with your finger, then releasing your

finger. If proper flow exists, the red ball

should noticeably rise up into the probe

when you uncover the probe tip. Note

that the actual height and final resting

position of the red ball are not important.

If the airflow ball does not rise:

- Tap the probe lightly to ensure the

ball is not sticking.

- Check the filter in the probe tip, as

described in the Maintenance

section.

If the flow is still insufficient, then the

unit should be forwarded for repair to the

nearest Authorized Service Center.

5. Allow two minutes for the sensor to

warm up, after which 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 reference bottle

(make sure sticky label is removed). The

unit should respond with a rapid flash

rate and sound verifying correct opera-

tion and optimum sensitivity for detecting

all refrigerant leaks. During product life,

if unit does not respond correctly, see

“Heater Adjustment” section.

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 back-

ground 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 is held station-

ary over 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

unit to re-establish sensitivity. Returning

to the leak site, the unit will alarm again.

Continuing this procedure will reliably and

repeatedly pinpoint the leak with each pass

over the leak site.

If a large leak is present, the auto zero cir-

cuit may reduce sensitivity to an unaccept-

able 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 effec-

tive means to determine if a large leak of

any refrigerant exists prior to searching for

leaks (see “Adjusting the Sensitivity”).

WARNING: Personal Injury Hazard

Do not use the H-10PM in an explosive or com-

bustible 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.

Manual Mode

In the Manual Mode the auto-zero

circuit is disabled. The unit will not zero out

the leak if the probe is held over the leak

site. This mode may require frequent read-

justment of the Manual Balance control to

maintain the required 2-3 ticks per second

that indicates proper adjustment and calibra-

tion for all three sensitivity switch positions.

In this mode you may notice sensitivity is

slightly greater (10-20%) than the auto-zero

mode. This is normal.

Heater Adjustment

(for optimum performance and calibration)

The Calibration Reference Bottle sensor

heater circuit controls the sensitivity of the

unit. A heat setting that is too high causes

instability due to excessive sensitivity

and shortens sensor life. The LOW / OK /

HIGH LEDs in conjunction with the Heater

Adjustment and Calibration Reference Bottle

is a unique system for setting the correct

sensor heat (sensitivity) for optimum perfor-

mance and long sensor life.

The unit is pre-set for optimum initial

operation. To check the setting, slide the

mode switch to AUTO, turn ON the unit and

allow it to stabilize (approximately 2 min-

utes). When stabilized, at 2-3 clicks per sec-

ond, briefly touch the Calibration Reference

Bottle with the probe (after removing the

sticky label disc from the top of the bottle).

If adjusted properly the red LOW LED will

go out and the green OK LED will briefly

glow. This indicates the sensor’s heat/sensi-

tivity is adjusted for optimum performance.

If the red LOW LED remains on when you

briefly touch the bottle, the sensor heat is

set too low and the Heater Adjustment must

be turned slightly clockwise. Allow unit to

stabilize about one minute and retest. Repeat

this procedure until the green OK LED

briefly glows.

If the red HIGH LED glows, the heat is set

too high and the Heater Adjustment should

be turned slightly counterclockwise. Allow

the unit to stabilize and then repeat the test.

Continue this procedure until the proper

green OK LED indication has been achieved.

NOTES:

A. After initial check for correct adjustment,

disregard the LOW / OK / HIGH LEDs. Their

indication is meaningless 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

sensitivity 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

couple of weeks for heavy duty service and once

every few months for light duty

service. The sensor LED status indicators will

accurately tell you when adjustment is necessary

during the daily check.

D. Over the usable sensor life, when heater

adjustment is fully clockwise and the green OK

LED will not come on, it is time to replace the

sensor. Before plugging in a new one, turn the

Heater Adjustment fully counterclockwise then

plug in the new sensor and test and adjust as

described above to calibrate the instrument.

Application Notes

1. Start leak checking anywhere and con-

tinue in a logical progression through the

entire system to locate all leaks. If sur-

faces are particularly dirty, or wet, wipe

them off with a clean, dry cloth to reduce

filter clogging 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 switch

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 suf-

ficient to verify that the system is free of

leaks that require repairing.

Caution: Equipment Damage Hazard

A. Submerging the probe in liquid will damage

the air pump.

B. Exposing the probe to a stream of pure refrig-

erant coming out of a tank will severely reduce

the life or destroy the sensor. Life of this rare-

earth sensor technology 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.

C. Exposure to high concentrations of refrigerant

may require adjustment of sensor heat. To check,

repeat the test procedure in “Heater Adjustment”

section.

Maintenance

(replacing the filter and airflow indicator)

To protect the air pump from damage due

to foreign particles and moisture, replace

the filter as it becomes dirty. With mod-

erate use (15 to 30 minutes a day), it is

recommended that the filter be replaced

once a month. In dirty environments or

with heavy use, replace the filter more

frequently. 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 ball into

the tip.

4. Reattach the probe tip to the probe

assembly.

Filter

Rubber

Probe Tip

Airflow

Indicator Ball

Probe Tip

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