ATP Electronics Heated Pentode ZX-1A User manual

ZX-1A
Heated Pentode™
REFRIGERANT LEAK DETECTOR
Owner’s Manual
Manual del propietario
Manuel de L’utilisateur
Bedienungsanleitung
Manual d’istruzioni

TABLE OF CONTENTS
1
E
N
G
L
I
S
H
General Description 2
Features 2
Parts & Controls 3
Getting Started
Unpacking 4
Installing and Charging batteries 4
Sensor and Probe installation 5
Operating Features
Constant Power Indication 6
True Battery Voltage Indicator 6
Automatic Circuit / Reset Feature 7
Sensitivity Adjustment 7
Sensor Status Indicator 8
Audible / Visual Alarms – Mute feature .8
Operation 9
Operating Tips 10
Maintenance
Battery 12
Sensor 13
Probe Tip and Filter 15
General care 16
Replacement Parts 17
Specifications 17
Warranty 18
Troubleshooting .19
Español 20
Français .40
Deutsch 60
Italiano 81

Thank you for purchasing the ATP ZX-1AHeated Pentode™ Refrigerant Leak Detector. We are proud to
offer what we believe to be the very best portable electronic leak detector available today.
The ZX-1Aoffers the greatest sensitivity and fastest response of any portable refrigerant detector available.
This is achieved through the employment of a patented Heated Pentode™ sensor combined with a
sophisticated microprocessor controlled circuit using patented technology.
In addition to the supreme performance and functional advantages, the ZX-1Aoffers a leading edge, unique
and ergonomically designed shape to provide greater ease of use, comfort, and of course, appearance.
We are so sure of the quality and performance of this product that we have backed it with one of the best
warranties ever offered in the industry.
In order to gain the fullest benefits of your purchase, please carefully read and review the information in the
following pages. If you have further questions, or need additional assistance, please contact your
Distributor.
• Patented Heated Pentode™ sensor technology
U.S. Patent# D458854; 6644098; 6703840; 6649876; 6679098; 6619103
European Patent# EP1227318; Japanese Patent# JP2002310968
• Refrigerant specific detection
• Detects ALL halogenated refrigerants at levels below 3g/yr
• Sensor cannot be “poisoned” by excessive refrigerant
• Tri-color visual leak size indicator
• Tactile keypad controls with one touch reset and adjustable sensitivity
• True mechanical pump provides instant response and clearing
• Battery test function
• Sensor failure indication
• Ni-MH Rechargeable batteries
• Revolutionary design
• Meets SAE J1627
• Flexible stainless probe
• Re-charger included
• CE Approved
• 2YEAR WARRANTY
GENERAL DESCRIPTION
FEATURES
2

1. On/Off Key 7. Sensor (not pictured)
2. Sensitivity Hi/Lo Key 8. Flexible Probe
3. Reset Key 9. Probe Tip
4. Alarm Key 10. Filter cartridge
5. Constant power indicator (1st LED) 11. Charger input jack (underside)
6. Visual leak size indicators (2nd-6th LEDs) 12. Ni-MH Battery pack
PARTS AND CONTROLS
3

WARNING: PERSONAL INJURY HAZARD
Do not use this Leak Detector in an explosive or combustible atmosphere. The
ambient atmosphere is drawn through the probe and sensor which operates at a very
high temperature.
The resulting hot mixture of air and combustible gas could explode.
Unpacking
Unpack the unit from the carton and carrying pouch. Refer to the Parts and Controls section
(page 3) for parts identification. You will find five (5) major components in the carrying case.
- Unit
- Battery pack
- Sensor
- Probe
- Battery charger
Before using your new leak detector for the first time, you will need to charge the batteries,
install the sensor and install the probe.
Installing and Charging Batteries
CAUTION: Batteries should only be charged in temperatures between 50ºF and 104ºF
(10ºC - 40ºC). Charging batteries outside this temperature range may cause
permanent damage to the batteries.
A new unit comes shipped with the battery pack partially installed and taped in place. Remove
the tape holding the battery pack, remove the battery pack, and then remove the tape and pack-
ing material inside the battery pack compartment, covering the battery socket.
Re-insert the battery pack, NOTING THE CORRECT ORIENTATION, indicated by the ‘rib’ and
square peg on one side of the pack and corresponding groove in the instrument’s compartment
(see Fig 2).
GETTING STARTED
FIG 2
4

Once the battery pack is installed, plug the charging unit into a wall outlet and connect the
charger jack to the unit (see Fig 3). When properly connected, the first LED will indicate the
charging status:
- Quickly flashing orange = battery charging
- Slowly flashing green = battery fully charged
- Slowly flashing red = failed batteries, cannot be recharged
New or completely discharged batteries will take approximately two (2) hours to fully re-charge.
When the LED indicates that the batteries are fully charged, the unit is ready for operation.
Sensor and Probe Installation
Anew unit comes shipped with the probe not installed on the unit and the sensor packaged in
a hermetically sealed foil bag.
1. Open the bag and remove the sensor.
2. Hold the unit with the front end facing you and note the sensor connection inside the
threaded bushing on the end of the unit. Note that there are five (5) holes corresponding to
the five (5) pins on the sensor – three (3) on the left and two (2) on the right (refer to Fig. 4).
3. Grasp the sensor and align the pins with the corresponding holes. CAUTION: the sensor can
only be inserted one way.
When properly aligned, firmly push the sensor into the
connector until it stops.
4. Install the flexible probe by screwing it clock-wise onto the threaded brass bushing around the
sensor until it is finger tight. Note: Do not bend the probe too sharply or the probe can be
damaged.
CAUTION: NEVER operate the unit without the flexible probe properly installed.
Sensor contamination, erratic performance and other problems may occur. Additionally,
the sensor will become quite hot during operation, which could be dangerous.
FIG 3
FIG 4
Threaded Bushing
Pins Sensor
5

Your unit includes an array of operating features designed to increase usability and simplify user
interface. Please refer to the Parts and Controls diagram on page 3 to familiarize yourself with
the indi cators and keypad controls as you proceed through this section.
A proper understanding of each key and its function will enhance your experience with this prod-
uct and allow you to get the most from its capabilities.
Constant Power Indication
The Constant Power indicator allows the user to see the battery level at all times.
The first LED (closest to the keypad) in the display is an ‘intelligent’ battery status indicator and
will remain on whenever the unit is powered on. The LED will illuminate in one of three colors to
indicate the battery voltage level.
If the LED is green, this indicates that the batteries are fully charged or have sufficient voltage
for normal operation.
If the LED is orange this is an indication that the batteries have enough voltage to operate but,
should be re-charged when the current usage of the unit is complete.
If the LED is red, the batteries should be immediately re-charged to prevent erratic performance
and/or failure of the unit during operation.
True Battery Voltage Indicator
The unit also includes a feature that will allow you to display and see the actual battery voltage
at any time.
To activate the True Battery Voltage test, press and hold the key for at least one second (do
not release the key during the one second period or the unit will shut off). The display will show
1 to 6 LED’s in red, orange, and green to indicate the actual battery voltage as follows:
• 1 red = less than 4.4 volts RECHARGE THE UNIT IMMEDIATELY
• 1 red, 1 orange = 4.4 to 4.6 volts
• 1 red, 1 orange, 1 green = 4.6 to 4.8 volts
• 1 red, 1 orange, 2 green = 4.8 to 5.0 volts
• 1 red, 1 orange, 3 green = 5.0 to 5.2 volts
• 1 red, 1 orange, 4 green = greater than 5.2 volts. Fully charged
OPERATING FEATURES
6

Automatic Circuit/Reset Feature
The unit features a patented Automatic Circuit and Reset function that set the unit to ignore
ambient concentrations of refrigerant.
Automatic Circuit - Upon initial power on and the completion of the warm-up, the unit automati-
cally sets itself to ignore the level of refrigerant present at the tip. Only a level, or concentration,
greater than this will cause an alarm.
CAUTION: Be aware that this feature will cause the unit to ignore any refrigerant present at the
probe tip after warm-up is completed, and therefore the unit should only be powered on and
allowed to warm-up in fresh air.
Reset Feature - Resetting the unit during operation performs a similar function; it programs the
circuit to ignore the level of refrigerant present at the tip.
Each time the key is pressed (and released), the unit sets its threshold for detection to a level
above the current concentration being detected. By moving closer to a large leak and pressing
each time a full detection is indicated, the user can 'home-in' on the source of the leak (higher
concentration).
Similarly, 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, i.e. sets the
unit to its maximum sensitivity in the chosen sensitivity level.
To reset the unit press the key.
Each time the key is pressed, the LEDs will briefly light in orange to provide a visual confir-
mation of the reset action.
Sensitivity Adjustment
The unit provides two levels of sensitivity. When the unit is switched on, it is set to the high sen-
sitivity position.
1. To change the sensitivity, press the key. When the key is pressed, the LEDs will light in
orange from top to bottom, providing a visual confirmation and indication that the unit is in
Low sensitivity mode.
2. To switch back to High Sensitivity, again press the key. The LEDs will
light in orange from bottom to top, providing a visual confirmation and indication that the unit
is in High sensitivity mode.
7

The base beeping tone is also an indication of sensitivity level.
- In High sensitivity the unit emits two quick beeps approximately once every two (2) seconds, in
fresh air.
- In Low sensitivity the unit emits only one beep, approximately once every two (2) seconds, in
fresh air.
NOTE: In high sensitivity the unit is extremely sensitive to HFC compounds (e.g. R134a),
responding to levels below 0.1 ounces/year (3grams/year). If searching for large leaks of HFC’s,
new azeotrope blend refrigerants (R400 series) or any size HCFC or CFC (e.g. R22 or R12)
leaks, it is best to start your search in Low sensitivity.
Sensor Status Indicator
The unit’s circuit has the ability to automatically diagnose and indicate the sensor’s status.
Whenever the unit is energized, the circuit automatically senses the condition of the sensor and
can detect a failed or missing sensor.
As the sensor ages the circuit will note and indicate this to the user. Initially, an "Old Sensor
Indication" is displayed by flashing the Constant Power Indicator. If this indication appears, you
should immediately obtain a replacement sensor. However, it is not necessary to replace the
sensor before the "Failed Sensor Indication" is received.
If the circuit detects a failed or missing sensor, the 2nd through 6th LEDs will turn red and flash
quickly. The 1st LED will continue to display the battery status as described above. Additionally
the internal pump will be shut down to prevent unnecessary battery drain.
If this indication appears refer to the Maintenance Section on page 13 for service instructions.
Audible / Visual Alarms – Mute feature
The unit features two primary alarm indications – an internal speaker that produces a multiple
frequency tone, and a series of Tri-color LEDs that will provide an incremental indication of leak
detection and proportional leak size.
You may choose to activate both the audible and visual alarms, or solely the visual alarm. Upon
power on, the unit will activate both. If you wish to cancel the audible alarm, or ‘Mute" the unit -
Press the key.
This will mute the internal speaker, and a detection will be indicated solely by the LED display.
Press the key again, at any time, to reactivate the internal speaker.
The LEDs provide a tri-color, proportional indication of leak intensity. The 2nd through 6th LEDs
are used for this indication, while the 1st LED always remains an indication of battery strength.
See figure 5.
8

When a refrigerant is detected, the visual indicator will light from bottom to top; first in green,
then sequentially in orange, and then sequentially in red. Oftentimes, on anything but the small-
est leak, the extreme sensitivity of the unit may cause the LEDs to all light in orange or red.
As each LED can appear in one of three colors – green, orange or red – this will result in 15
distinct alarm levels.
WARNING: PERSONAL INJURY HAZARD
Do not use this Leak Detector in an explosive or combustible atmosphere. The
ambient atmosphere is drawn through the probe and sensor which operates at a very
high temperature.
The resulting hot mixture of air and combustible gas could explode.
1. Press and release the key to switch the unit on.
2. The LEDs will begin cycling on in orange from bottom to top to indicate warm-up. The warm-
up time is fixed at 20 seconds.
3. After warm-up, all LEDs will flash briefly orange, indicating that the unit is ready for use. The
unit will begin beeping at a steady rate (two quick beeps approximately once every two sec-
onds – indicating high sensitivity) and the first LED will display the battery voltage level as
described in the "Constant Power Indicator" section, above.
4. Choose the sensitivity level in which you wish to start, as described in the "Sensitivity
Adjustment" section, above.
OPERATION
LED Off Power Green Orange Red
Proportional
Indicators
(2nd-6th LED)
Constant
Power
Indicator (1st LED)
Proportional Visual Leak Indicator
FIG 5
9
m

5. Begin searching for leaks. Move the probe tip toward the suspected leak. The flexible probe
may be shaped to provide access to hard to reach areas.
NOTE: If the unit has previously been in service, check that the probe tip is not obstructed with
dirt, grease, etc. and check the condition of the filter as described in the Maintenance section on
page 15.
6. If a refrigerant is detected, the unit will begin to alarm – the audible tone will quicken and the
LEDs will light. The larger the detected concentration, the greater the alarm. The LEDs pro-
vide a proportional indication of concentration
• Green – small concentration
• Orange – moderate concentration
• Red – large concentration
NOTE: The unit is NOT a measuring tool, rather it is simply a proportional detector. That is to
say that the LEDs are not, and cannot be construed to be, indicative of a specific corresponding
leak rate or concentration.
7. If an alarm occurs before the leak source is pinpointed, the key may be used to
"home-in" on the leak, as described in the "Operating Features" section, above. The unit may
be ‘reset’ as many times as necessary to pinpoint the leak source.
NOTE: Due to the high sensitivity of the instrument it is possible it will detect the presence of
high intensity electromagnetic fields.
The following section includes several general operating tips, and the SAE J1628 recommended
procedure for leak detection.
LEAK DETECTION TECHNIQUES
1. Prior to each use, inspect the probe tip and filter element as described in the Maintenance
Section on page 15.
2. Be aware that refrigerants are invariably heavier than air and will tend to ‘fall’ from, or collect
below, actual leak points/sources. Searching below areas of potential leaks is invariably the
most effective and reliable way of locating such.
3. In areas that are heavily contaminated with refrigerant, the unit may be reset to block out
ambient concentrations of gas. The probe should not be moved while the unit is being reset.
The unit can be reset as many times as needed.
OPERATING TIPS
10

4. In windy areas, even a large leak can be difficult to find. Under these conditions, it is best to
shield the potential leak area from wind or breezes.
5. Remember that a leak is a constant source of refrigerant and therefore when a true leak
source is located it should produce a repeatable alarm each time it is approached.
Intermittent (non-repeatable) alarms are often caused by accumulations of refrigerant near or
around leak points.
6. If an alarm occurs, and is not repeated when the probe tip is replaced to the same point, it is
unlikely that there is any significant leak present at that point. However, this may be
indicative of a leak nearby – and can be used as a diagnostic aid in leak finding.
SAE J1628 Recommended Procedure
FIG 6
NOTE: On Automotive A/C Systems leak test with the engine not in operation.
1. The air conditioning or refrigeration system should be charged with sufficient refrigerant to
have gauge pressure of at least 340 kPa (50psi) when not in operation. At temperature below
15ºC (59ºF), leaks may not be measurable, since this pressure may not be reached.
2. Take care not to contaminate the detector probe tip and that the part being tested is not
contaminated. If the part is particularly dirty, or condensation (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.
3. Visually trace the entire refrigerant system, and look for signs of air conditioning lubricant
leakage, damage, and corrosion on all lines, hoses, and components. Each questionable
area should be carefully checked with the detector probe, as well as 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.
4. 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.
5. At each area checked, the probe should be moved around the location, at a rate no more
than 25 to 50 mm/second (1-2 in/second), and no more than 6.35mm (1/4 in.) from the sur
face, completely around the position. Slower and closer movement of the probe greatly
improves the likelihood of finding a leak (see fig. 6). Any increase in beep rate is indicative of
a leak.
11

BATTERY MAINTENANCE
Charging Batteries
CAUTION: Batteries should only be charged in temperatures between 50ºF and
104ºF (10ºC - 40ºC). Charging batteries outside this temperature range may cause
permanent damage to the batteries.
Whenever the Constant power indicator LED appears Red, and/or the True battery
voltage indicator shows only the Red LED, the batteries must be re-charged.
To recharge the batteries:
1. Plug the charging unit into an appropriate wall outlet and connect the charger jack to the unit
(see Fig 3, page 5).
MAINTENANCE
6. 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 tips as close as possible to
the indicated leaksource and slowly move around it until the leak is confirmed.
Automotive A/C Systems only-
7. Leak testing of the evaporator core while in the air conditioning module shall be accomplished
by turning the air conditioning blower on high for a period of 15 seconds minimum, shutting it
off, then waiting for the refrigerant to accumulate in the case for 10 minutes.
After such time, insert the leak detector probe into the blower resistor block or condensation
drain hole, if no water is present, or into the closest opening in the heating/ventilation air condi-
tioning case to the evaporator, such as the heater or vent duct. If the detector alarms, a leak
apparently has been found.
12

2. When properly connected, the first LED will indicate the charging status:
- Quickly flashing orange = battery charging
- Slowly flashing green = battery fully charged
- Slowly flashing red = batteries failed, cannot be recharged
New or completely discharged batteries will take approximately two (2) hours to fully
recharge.
3. When the LED indicates that the batteries are fully charged (slowly flashing green), the unit
is ready for operation.
NOTE : It is recommended that whenever the unit is not in use, it be left connected to the charg-
er in order to ensure full battery power is later available. The internal charging circuit will prevent
over charging and will provide a continuous maintenance charge if and when required by the
batteries.
Storage
Even when powered off, the unit will slowly discharge the batteries over time. Before storing the
unit for extended periods (over 4 weeks), the battery pack should be removed from the unit.
Nevertheless, the Ni-MH batteries will eventually self-discharge, and will require re-charging
before use.
When replacing batteries take care to insert the battery in the correct fashion as described in the
"Getting Started’ section, and depicted in figure 2, page 4.
Disposal
Ni-MH batteries are recyclable and must be disposed of properly. Do not
incinerate or expose to open flames.
SENSOR
The patented Heated Pentode™ Sensor is a precise device that, in conjunction with the
advanced circuit, provides the extreme performance of the unit.
The sensor is a consumable element and will eventually require replacement. The circuit contin-
uously compensates for sensor aging to maintain a constant performance level; so sensitivity
and response remain the same throughout the life of the sensor.
13

As described above in the Operating Features section, the unit’s circuit will automatically diag-
nose and indicate the sensor’s status.
If an "Old Sensor Indication" is received, you should obtain a new sensor as soon as possible.
Ensure that you have a replacement sensor (see the Replacement Parts section on page 17 for
the correct part number) before proceeding.
If a failed or missing sensor indication is received:
1. Remove the flexible probe by firmly grasping it and rotating counter-clockwise. This will
expose the sensor in the end of the unit (see Fig 7). Verify that the sensor is installed.
A. If a sensor is present proceed to step 2.
B. If no sensor is present, skip ahead to step 3.
CAUTION: The sensor is heated to high internal temperatures during operation and
consequentially, the sensor case becomes hot. Use caution when removing the
sensor – it is preferable to allow the unit to remain powered off and at rest for at least
5 minutes before removing the sensor.
2. Remove the old sensor by firmly grasping under the flange and pulling straight away from the
unit. Discard the old sensor.
3. A new sensor comes packaged in a hermetically sealed foil bag. Open the bag and remove
the sensor.
4. Hold the unit with the front end facing you and note the sensor connection inside the threaded
bushing on the end of the unit. Note that there are five (5) holes corresponding to the five (5)
pins on the sensor – three (3) on the left and two (2) on the right (refer to Fig. 8).
FIG 7
Unit
Sensor
14

5. Grasp the sensor and align the pins with the corresponding holes. CAUTION: the sensor can
only be inserted one way. When properly aligned, firmly push the sensor into the connector
until it stops.
6. Install the flexible probe by screwing it clock-wise onto the threaded brass bushing around
the sensor until it is finger tight.
CAUTION: NEVER operate the unit without the flexible probe properly installed.
Sensor contamination, erratic performance and other problems may occur.
Additionally, the sensor will become quite hot during operation, which could
be dangerous.
PROBETIP AND FILTER
The pointed tip of the flexible probe is removable for cleaning and access to the filter cartridge.
(see Figure 9). Once the tip is removed access to the filter cartridge is possible.
1. Remove the probe tip by firmly grasping both the probe and the tip and rotating the tip
counter-clockwise.
2. Inspect the filter inside the filter cartridge. If any discoloration or particulate is
visible, the filter cartridge should be discarded and replaced. A pack of replacement filter
cartridge is included with your unit. Additional filter cartridge may be ordered – refer to the
Replacement Parts section on page 17 for the correct part number.
FIG 8
Threaded Bushing
Pins Sensor
15
FILTER CARTRIDGE
INSTALL AS SHOWN
TIP “O” RING
PROBE ASSEMBLY
FIG 9

3. Filter cartridge and tip installation instructions:
A. Remove existing tip and old filter. Replace existing "O"-ring if needed.
B. Make sure the probe is clean. Blow both ends out with air pressure if
possible.
C. Install new filter cartridge on to the probe, as pictured Fig.9, with "pointed"
end of the raised ribs toward tip.
D. Screw the new tip on (with new "O"-ring in place on the threads). The filter
cartridge should be snug against both "O" rings.
4. Filter cleaning instructions:
During operation, if the filter becomes blocked with liquid, the pump will
sound like it is laboring, and normally all of the LED's will light up, and the
alarm will sound. If this occurs, the filter is easily cleared:
A. Turn the unit off to avoid the possibility of liquid getting inside the unit.
B. Remove the tip and filter and tap both ends of the filter cartridge directly
on a clean hard surface, several times, until all of the liquid is removed.
Also make sure the tip is clear of liquid or grease.
C. Turn the unit back on. If the pump sounds normal, it is ready for use.
Otherwise replace the filter.
Extremely contaminated filter cartridges can be washed under running water.
After rinsing, tap it from both ends on a clean hard surface to remove all
droplets of water. Alcohol can also be used.
5. If dirt, oil, grease, etc… is visible on the probe tip it can be cleaned by rinsing
it in a mild solvent such as denatured alcohol. Make certain that the tip dries
completely before replacing.
Note: The filter does not have to be thoroughly dried out before using it again.
6. Replace the probe tip by firmly grasping both the probe and the tip and
rotating the tip clockwise until finger tight.
CAUTION: NEVER operate the unit without the probe tip and filter
properly installed. Filter and sensor contamination, erratic performance
and other problems may occur.
GENERAL CARE
Take care not to obstruct the charging port or speaker outlet grill (right hand side
above the rubber grip) with dirt or grease. If it becomes necessary to clean the
unit use only a soft cloth dampened with a mild soap to wipe down the body and
probe.
The unit is a precision electronic device. Avoid extreme mechanical shock, expo-
sure to strong magnetic fields and extreme temperatures. Never immerse the
probe tip or any part of the unit into liquids of any sort.
16

Several components of the unit are consumable and will eventually require replace-
ment. Additionally, optional accessories for the unit are available through your dealer.
Always specify the part number below to ensure obtaining the correct part.
TIF ZX-2 Replacement Heated Pentode™ Sensor
TIF ZX-3 Battery Charger (110V, 60Hz) (North and South America)
TIF ZX-3E Battery Charger (230V, 50Hz) (Europe,Asia, and Australia)
TIF ZX-3J Battery Charger (100V, 50/60Hz) (Japan only)
TIF ZX-5 Soft Nylon Carrying Case
TIF ZX-6 Charging Base
TIF ZX-20 N ickel- Metal Hydride (NiMH) Battery Pack
TIF ZX-9 Probe Tip
TIF ZX-10 Flexible Probe
TIF ZX-11 Battery Charger 12V (Cigarette lighter)
TIF ZX-14 Replacement Kit:filter,“O”-Ring (2) and tip
TIF ZX-15 Filter cartridge (5 pk)
Sensor Technology: Patented Heated Pentode TM (advanced heated diode).
Electronic Technology: Patented microprocessor controlled circuit including constant
battery and sensor condition detection.
Sensitivity: Per SAE J1627 Criteria:0.5 oz/yr (14 gr/yr) for R134a, R22 and
R12.
Ultimate Sensitivity: Less than 0.1 oz/year (3gr/yr) R134a, in high sensitivity; as low as
0.05 oz/yr R12 in low sensitivity.
Warm-up period: 20 seconds
Excessive refrigerant
tolerance: Sensor cannot be poisoned by excessive refrigerant.
Battery life: Satndard Ni-MH battery pack - 5 to 6 hours,
depending on sensor age.
Integral constant power indication.
Battery technology: Ni-MH.
SPECIFICATIONS
17
REPLACEMENT PARTS

Battery recharge time: 2 hours, Integral charge status indication.
Failed sensor
indication: Top 5 LEDs flash red, pump off
Sensor life: 100 to 150 hours.
Operating
environment: 32ºF to 122ºF (0ºC to 50ºC), 0% to 95%
RH non-condensing
Dimensions: 10.25" L x 2.5" Dia (26cm L x 6.5 cm Dia)
Weight: Approximately 16 ounces (452 grams)
This instrument has been designed and manufactured to provide unlimited serv-
ice. Should the unit be inoperative, after performing the recommended mainte-
nance, a no-charge repair or replacement will be made to the original purchas-
er if the claim is made within TWO years from the date of purchase.
This warranty applies to all repairable instruments that have not been tampered
with or damaged through improper use. This warranty does not cover batteries,
sensor, battery charger, or any other materials that wear out during normal oper-
ation of the instrument.
Before returning your instrument for repair please make sure that you have
carefully reviewed the Unit Maintenance section of this manual to determine if
the problem can be easily fixed. Make sure that you have either replaced or
cleaned the filter and verify sensor functionality and that the batteries are work-
ing properly BEFORE returning the unit. If the instrument still fails to work prop-
erly contact customer service at the toll free number below to obtain an RMA
number and instructions. Repaired or replaced tools will carry an additional 90
day warranty. For more information please contact [email protected].
WARRANTY
18

Symptom Possible Cause Cure
Power indicator LED Batteries not charged Connect charger and
does not light (unit charge, see page 4.
does not switch on)
Top 5 LEDs flash Red Failed sensor Replace sensor as
and pump does not described on page 13.
run
Audible alarm does MUTE feature De-activate MUTE
not sound even engaged, feature, see page 8.
though LEDs light
Unit behaves Probe tip or flexible Tighten tip and/or probe.
erratically – alarms probe loose – causing
in fresh air disturbed airflow
Constant Power Old Sensor Indication Sensor may soon
Indicator flashes on require replacement.
and off. Obtain replacement,
but it is not necessary
to replace before a
Failed Sensor
Indication is received,
See page 13.
During battery Batteries have failed, Obtain replacement
charging, the charge cannot be recharged battery pack, refer
indicator goes out to Replacement
after 10 minutes Parts section for p/n.
During battery Batteries have failed, Obtain replacement
charging, the charge cannot be recharged battery pack, refer
indicator begins to to Replacement
flash red. Parts section for p/n.
TROUBLESHOOTING
19
Note 1: If an apparent malfunction of the instrument appears, remove and re-fit the battery.
Note 2: See page 15 for filter instructions.