Inficon D-TEK User manual

D-TEK

Refrigerant Leak Detector

OPERATING MANUAL

Declaration of Conformity

This is to certify that this equipment, designed and manufactured by:

INFICON Inc.

2 Technology Place

East Syracuse, NY 13057

USA

meets the essential safety requirements of the European Union and

is placed on the market accordingly. It has been constructed in

accordance with good engineering practice in safety matters in

force in the Community and does not endanger the safety of

persons, domestic animals or property when properly installed and

maintained and used in applications for which it was made.

Equipment Description:

D-TEK Refrigerant Leak Detector

Applicable Directives:

73/23/EEC as amended by 93/68/EEC

89/336/EEC as amended by 93/68/EEC

Applicable Standards:

EN 61010-1 : 1993

EN50081-1 : 1992

EN50082-1 : 1992

CE Implementation Date:

January 3, 1995

Authorized

Representative:

Gary W. Lewis

Vice President-Quality Assurance

INFICON Inc.

ANY QUESTIONS RELATIVE TO THIS DECLARATION OR TO THE SAFETY OF INFICON’S PRODUCTS SHOULD BE

DIRECTED, IN WRITING, TO THE QUALITY ASSURANCE DEPARTMENT AT THE ABOVE ADDRESS.

THIS SYMBOL IS INTENDED TO ALERT THE USER TO THE PRESENCE OF IMPORTANT

OPERATING AND MAINTENANCE (SERVICING) INSTRUCTIONS IN THE LITERATURE

ACCOMPANYING THE INSTRUMENT.

Thank you for buying the

INFICON D-TEK Refrigerant Leak Detector!

D-TEK combines sophisticated technology with durability for an

instrument with outstanding sensitivity that’s still Laboratory

Accurate, Toolbox Tough

. With normal use and little special care,

your D-TEK Refrigerant Leak Detector from INFICON will give you

years of trouble-free service.

The D-TEK’s High-Performance Features

• Electrochemical heated-diode sensor

• “No-reset” detection of CFCs, HCFCs, and HFCs

• Automatic adjustment (zeroing) to refrigerants in leak test area

• Rugged flexible probe

• Foam filter for sensor protection

• High/Low leak-sensitivity switch

• Convenient ON/OFF switch with LED indicator

• Variable-pitch audible leak-source signal

• Progressive yellow LED leak-magnitude indicators

• Rechargeable, replaceable NiCd power cells

• AC mains power adapter (100, 120, 220, 240 VAC models

available)

To get the best performance from your D-TEK Leak Detector,

please read this manual carefully before you start using the

instrument. If you have any questions or need additional assistance,

please call 800-344-3304. We’ll be happy to help you.

Green LED’s

Yellow LED’s

On/Off

switch

Rubberized

grip

Flexible probe

High/Low sensitivity switch

Power-cell

compartment

Power jack

Headphone jack

Heated-diode sensor

Tip protector

Getting Started

WARNING:

DO NOT OPERATE THIS INSTRUMENT IN THE

PRESENCE OF GASOLINE, NATURAL GAS, PROPANE, OR IN

OTHER COMBUSTIVE ATMOSPHERES.

Installing the Sensor

The D-TEK Refrigerant Leak Detector is shipped with the heated-

diode sensor packed separately. The sensor is located in the foil

protective package along with a desiccant capsule to keep it dry.

Installation of the sensor in the tip of the leak detector is required

before use. The steps for installation are:

• Locate the end of the leak detector probe and unscrew (counter-

clockwise) the tip protector. The three sockets are for the leads

of the D-TEK sensor to fit into.

• Remove the sensor from the foil protective package. The sensor

is the small metal “can” with a hole in the top.

Installing the Sensor (Continued)

• Carefully align the 3 leads (small wires coming out of the bottom

of the cap) on the sensor with the 3 sockets in the top of the

probe. Insert the leads into the sockets and press them together.

Note:

You must be careful not to bend the sensor leads because this

can cause erratic operation (see Troubleshooting.)

• Place the tip protector (with filter installed) over the sensor and

tighten snugly by turning cap in clockwise direction.

Charging the Power Cells

Because the D-TEK’s power cells are nickel/cadmium, they are not

yet charged. To charge them, connect the cord of the AC power

adapter to the power jack at the rear of the instrument, and plug the

adapter into the appropriate mains outlet. Allow 10 hours for the full

charge.

Even while the power cells are being charged,

your D-TEK Leak Detector’s power cords allow it to

operate (see Using Your INFICON D-TEK)

Note:

Power cells must be installed in the detector for proper operation.

Using Your INFICON D-TEK

WARNING:

DO NOT OPERATE THIS INSTRUMENT IN THE

PRESENCE OF GASOLINE, NATURAL GAS, PROPANE, OR IN

OTHER COMBUSTIVE ATMOSPHERES.

Using the D-TEK Refrigerant Leak Detector is simple: Make sure

the sensitivity switch is set on HIGH, then slide the power switch to

the ON position. The green ON indicator lamp will light, and some

or all of the yellow warm-up indicator lamps will come on. When the

yellow lamps all go off, the unit is ready to use.

The INFICON D-TEK Refrigerant Leak Detector provides similar

responses to all CFC’s, HCFC’s, HFC’s and refrigerant blends (i.e.,

Using Your INFICON D-TEK (Continued)

R-404A, R407C, R-410A) as well as SF

. There is no need to select

the refrigerant you’re working with.

Headphone sets may be used with the D-TEK Refrigerant Leak

Detector. When the headphones are plugged into the detector, the

audio signal will only be heard through the headset.

WARNING:

ONLY USE HEADPHONE SETS SUPPLIED BY

INFICON, PART #032-404. SERIOUS HEARING DAMAGE MAY

OCCUR IF OTHER HEADPHONE SETS ARE USED.

Finding Leaks

• Place the tip of the leak-detector probe as close as possible to

the site of the suspected leak. Try to position the probe within

1/4 inch of the possible leak source.

• Slowly (approximately 1-2 inches per second)

move

the probe

past each possible leakage point.

Note:

It is important to move the tip of the probe past the leak to get a

correct reading. The INFICON D-TEK only responds to changes in

concentration of the refrigerant from the leak. Moving the probe permits

the instrument to respond properly to these changes.

• Watch for the yellow lamps to light, and listen for a tone. When

the instrument detects a leak source, its yellow lamps will light,

and it will emit a different audible tone.

• When the D-TEK signals a leak, pull the probe away from the

leak for a moment, then bring it back to pinpoint the location.

• If the concentration of the refrigerant gas is high, slide the

sensitivity switch to LOW before repositioning the probe at the

suspected leak source. The LOW sensitivity setting helps find

the exact site when a leak is large.

• Once you have isolated the leak source, return the sensitivity

setting to HIGH to continue using the D-TEK.

Note:

When you reset the instrument to HIGH, as when you turn it on

initially, the yellow lamps will relight and the tone will sound again

momentarily.

• When you’ve finished leak-testing, turn OFF the instrument.

• Store your INFICON D-TEK in a clean place, protected from

shock, impact, or other possible damage.

Choosing Power Options

The INFICON D-TEK Refrigerant Leak Detector will operate either

on charged power cells or by connection to the AC power adapter.

When the unit is plugged in using the AC power adapter, the power

cells will continue to be charged while the D-TEK is operating,

although somewhat more slowly than if the instrument is OFF.

Two DC power cords are also available, designed to charge and

power the D-TEK from your vehicle’s battery. One DC power cord

plugs into your cigarette lighter; the other has battery clips. As with

the AC adapter, the D-TEK can be operated while connected to the

12-volt supply.

Note:

Power cells must be installed in the detector for proper operation.

Maintaining Your INFICON D-TEK

Recharging the Power Cells

Fully charged power cells should provide power for greater than 6

hours of continuous operation. When the charge is getting low, the

green light starts to flash. The flashing light indicates that you have

about 1 hour of useful charge in the power cells. To recharge the

power cells, use one of the instrument’s power cords.

WARNING:

DO NOT ATTACH ANY OTHER POWER

CORDS TO THE D-TEK’S POWER JACK EXCEPT THE AC

POWER ADAPTER AND DC CORDS DESIGNED FOR THIS

INSTRUMENT.

• Connect the AC power adapter cord to the instrument, and plug

the adapter into a working outlet

•Connect one of the DC cords to the D-TEK, and tap the power

from your vehicle’s battery.

Allow 10 hours for a full charge. You can operate the leak detector

on any of its power cords while the power cells are charging. Using

the instrument while the power cells are charging, however, will

lengthen the time required for a complete charge. The leak

detector will not overcharge the power cells, but for maximum

power cell life, disconnect the power adapter when the power cells

are fully charged.

Maintaining Your INFICON D-TEK

Recharging the Power Cells (Continued)

Probe

Sensor

Filter

Tip protector

Changing the Filter

The foam filter at the probe tip should be replaced if it becomes

plugged with water or oil. To replace the filter, unscrew the tip

Changing the Filter (Continued)

protector (counter clockwise) and simply push out (with a paper

clip or similar diameter object) the filter from the sensor side (larger

end) of the tip protector. Slide the new filter into the small hole in

the tip protector, then replace the tip protector.

If the sensor unplugs when you remove the tip protector, take it out

and plug it back in, as described in the next section.

Changing the Sensor

The D-TEK’s electrochemical heated-diode sensing element is

located in the tip of the probe. This specialized sensor will operate

for about 100 hours. At that point, you should replace the sensor:

•Turn OFF the leak detector.

•Locate the end of the leak detector probe and unscrew (counter

clockwise) the tip protector. Pull the sensor (the sensor is the

small “can”with the hole in the top) straight out, which unplugs

it.

•Remove the replacement sensor from the foil protective

package.

•Carefully align the 3 leads (small wires coming out the bottom of

the can) on the sensor with the 3 sockets in the top of the probe.

Insert the leads into the sockets and press them together.

Note:

You must be careful not to bend the sensor leads because this

can cause erratic operation (see

Troubleshooting

•Take this opportunity to change the filter, too. (see

Changing

the Filter

•Place the tip protector over the sensor and tighten snugly by

turning cap in clockwise direction.

Sensitivity Check

The D-TEK has a circuit that allows the operator to check the

sensor’s operation, insuring your instrument will be able to sense

refrigerant at the specified rate. To do this check you should:

•Turn on the D-TEK with the sensitivity switch in the HIGH

position. Be sure you either have charged power cells or you

are operating the D-TEK off the AC adapter.

•After the D-TEK goes through its warm up and all the yellow

LED’s turn off, move the sensitivity switch from HIGH to LOW

and then back to HIGH.

•If you do

not

see three (3) or more yellow LED’s light then zero

out, your sensor has either lost its ability to pick up the specified

refrigerant leak or your D-TEK has a malfunction (see

Trouble-

shooting

Removing/Replacing the Power Cells

If you have a

set of three

fully charged power cells, you may

exchange the

complete set

with the three used cells in the leak

detector, then recharge the originals later.

Note:

Power cells must be installed in the detector for proper operation.

Remove the battery compartment door on the back of the D-TEK by

pressing on both release buttons on the grip and pulling the door

straight out. See the photo below for location of parts. The batteries

are free to slide out into your hand.

Release Button

(Other side not shown)

Battery Door

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