TESTO 316-4 User manual

Bedienungsanleitung de
Instruction manual en
testo 316-4
Leakage detector for refrigerants

Safety and environment12
Safety and environment
On this document
iRead this document through carefully, and familiarize yourself with the product before
you put it to use. Keep this documentation close to hand in order to be able to
consult it if required. Pass this documentation on to later users of the product.
iPay particular attention to information which is marked with the following symbols:
· With the signal word Warning!:
Warns of dangers which can lead to serious injury if the prescribed safety measures
are not taken.
· With the signal word Attention!:
Warns of dangers which can lead to light injuries or material damage if the prescribed
safety measures are not taken.
· Important information
Avoiding personal injury/material damage
iUse the measuring instrument only for the purpose for which it is intended, and within
the parameters stated in the technical data. Do not use force.
iIf damage, malfunction or incorrect display occur, have the instument checked. Do
not use faulty instruments.
iDo not carry out measurements with the product on or near live parts.
iNever store the product together with solvents, acids or other corrosive substances.
iCarry out only repair and maintenance work described in the instruction manual.
Observe the prescribed handling steps. Use only original spare parts from Testo.
Protecting the environment
iDispose of faulty rechargeable batteries/empty batteries at the proper collection
points.
iSend the product back to Testo at the end of its life. We will ensure that it is disposed
of in an environmentally friendly manner.

13
Specifications
Functions and application
The testo 316-4 is a leakage detection instrument for the fast and reliable detection of
leakages on refrigeration systems and heat pumps. Gas concentrations are indicated
optically and audibly. The instrument can be adapted to your requirements thanks to its
exchangeable sensor head.
· 0554 3180: Refrigerant sensor head for R134a, R22, R404a, H2 and further CFC, HCFC, HFC
· 0554 3181: NH3-sensor head for ammonia.
(Details see Tips and assistance)
The testo 316-4 is not a piece of protective equipment! Do not use the testo 316-4
as a monitoring instrument for your personal safety!
Technical data
Technical measuring data
· Sensor: Gas-sensitive semi-conductor
· Reaction threshold: <3g/a / <0.1oz/yr (specified for
reference refrigerants)
· Reaction time: <1s
Further instrument data
· Operating conditions: -5 to 50°C/23 to 122°F/20 to
80%RH, with limited functionality (only audible indi-
cation, reduced accuracy, reduced operating time) can
also be used in the range -20°C to -5°C/-4 to 23°F
· Storage/transp. conditions: -25 to 70°C/
-13 to 158°F/20 to 80%RH
· Minimum bend radius gooseneck: 40 mm
· Current supply: Rech. battery pack NiMh
· Battery life: appprox. 6h (at 22°C/72°F)
· Charging time: approx. 8h
· Dimensions: 57 x 190 x 42mm
· Weight: 348g
Guidelines, norms and tests
· EC guideline: 2004/108/EEC
· Meets SAE J1627 for refrigerant R134a
Warranty
· Duration: 2 years
· Warranty conditions: See web page
www.testo.com/warranty
Specifications
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Product description14
Product description
At a glance
Sensor head with gas sensor, exchangeable.
Flexible probe shaft.
Top: earplug socket, mains unit socket.
Display.
Operating buttons.
Display and operating elements
Display Meaning
Colour of the display illumination
green No gas detected.
red Gas detected.
Symbols
Gas concentration trend display: No gas detected / Gas detected.
Gas concentration trend display: First alarm threshold / Second alarm threshold.
Gas concentration maximum value display : Maximum gas concentration detected
since the last reset of the maximum display or since the last time the instrument
was switched on.
Type of gas to be detected.
Localization mode.
Battery capacity: Battery full / battery partly discharged / remaining capacity <15min.
Audible signal: on / off.
Buttons Function
Instrument: on / off.
Type of gas to be detected: Select.
Audible signal: on / off.
Switch-over search mode / localization mode.
Keep button pressed for 2s: Zeroing.

Product description 15
Audible notification
The audible notification takes place with a signal tone whose interval frequency
increases with increasing gas concentrations. A continuous signal sounds when the
second alarm threshold is passed.
First steps
²Charging bbattery:
Use only the original mains unit 0554 1093!
The rechargeable battery can only be charged at an ambient temperature
of 0 to 45°C ( 32 to 113°F).
If the rechargeable battery is completely discharged, charging takes approx. 8h.
In order to ensure as long a battery life as possible, the battery shoud always be
completely discharged and recharged.
The instrument can continue to be used during charging.
1Plug the mains plug into the country-specific adapter and then plug into the mains
socket.
2Plug the instrument plug into the mains unit socket of the instrument.
- Charging begins: , and light up alternately.
- Charging stops automatically when the rechargeable battery is full: lights up.
²Using tthe eearplug:
Use only the original earplug 0554 5001!
The instrument loudspeaker is deactivated when the earplug is plugged in!
iPlug the connection plug of the earplug into the earplug socket of the instrument.
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Using the product16
Using the product
²Switching oontthe iinstrument:
1Press .
- All display segments light up (duration: 3 sec), the suction pump starts
(ventilator noise).
- The initialization phase is carried out (heating, auto-test). The remaining
duration is displayed.
- After the end of the initialization phase: OK lights up (duration: 2 sec).
Attention! Danger of burning from the hot sensor head after prolonged use!
iBefore touching the sensor head or packing up the instrument, switch off
and allow to cool.
²Selecting ggas ttobbeddetected ((only wwith ssensor hhead 00554 3180):
iPress several times, until the arrow lights up under the desired gas type.
For other gas types, please consult the table in the chapter Tips and assistance .
²Carrying oout zzeroing:
iKeep pressed until two beep sounds are heard.
- The instrument is standardised to the current gas concentration.
²Change ooperating mmode:
After switching on, the instrument is automatically in Localization mode (optimization
of the sensitivity to the change in the signal). If required, Search mode can be
activated (optimization of the sensitivity to the leakage quantity).
iPress .
- disappears. Search mode is activated.
iPress again.
- lights up in display. Localization mode is activated again.
²Carrying oout ggas ddetection:
Attention! Destruction of the sensor by non-desorbant substances (e.g. oils)!
iDo not use the instrument in dirty surroundings.
iMove the sensor head as close as possible, and slowly (3 to 5 cm per second)
over the parts which are to be examined for leaks.

Using the product 17
²Resetting mmaximum vvalue ddisplay:
iPress and simultaneously.
²Switching iinstrument ooff:
iPress and hold until the display switches off.
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Tips and assistance18
Maintaining the product
±Charging tthe rrechargeable bbattery:
See chapter “First steps”
±Changing tthe ssensor hhead:
Attention! Danger of burning from the hot sensor head after prolonged use!
iBefore touching the measurement head or packing up the instrument,
switch off and allow to cool.
1Unscrew the sensor head and remove it from the probe shaft.
2Plug the new sensor head on to the probe shaft and screw tight.
±Cleaning tthe ssensor:
Tobacco smoke, dirty air, oils, grease and evaporating liquids or gases can lead to
deposits on the surface of the sensor. This can result in reduced sensitivity and
falsified display of concentrations. If necessary clean the sensor.
iSwitch on the instrument, wait until the end of the initialization phase and switch
off again. Repeat this procedure several times.
±Cleaning tthe ssensor hhead:
iIf dirty, clean the sensor head with a soft dry cloth.
±Cleaning tthe hhousing:
iIf dirty, clean the housing with a damp cloth (soap solution). Do not use aggressive
cleaning products or solvents!
±Regular sservicing:
Testo recommends yearly servicing of the gas detector by an authorized service
centre.

Tips and assistance 19
Tips and assistance
Questions and answers
Question Possible causes / solutions
“Error 01” · Instrument error: please contact your dealer or Testo customer service.
“Error 02” · Sensor defective (wire breakage): please contact your dealer or Testo customer
service.
“Error 03” · Sensor connection incorrect: check plug connection of sensor head
“Error 04” · Impermissible sensor head: change sensor head.
“Sensor” blinkt · Sensor dirty: clean sensor, see chapter “Maintaining product”.
If we were not able to answer your question, please contact your dealer or Testo
customer service. For contact data, see back of this document or web page
www.testo.com/service-contact.
Detectable refrigerants
Refrigerant Reference refrigerant Detectable Refrigerant selection
Refrigerant group (lower reaction threshold specified) refrigerant in instrument
CFC x R22
HCFC x R22
HFC x R404a
R12 x R22
R22 x R22
R123 x R22
R134a x R134a
R404 x R404a
R407a, b, c, d, e x R134a
R408 x R22
R409 x R22
R410a x R134a
R505 x R22
R507 x R134a
R600 x R22
R600a x R22
Hydrogen x H2
Ammonia x NH3
R124 x R22
R227 x R134a
R422d x R134a
R11 x R22
R290 x H2
R508 x R134a
R427a x R404a
R1270 x R22
R1150 x R22
R170 x R134a
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Tips and assistance20
Accessories and spare parts
Description Part no.
Refrigerant sensor head 0554 3180
NH3sensor head 0554 3181
Earplug 0554 5001
Mains unit 0554 1093
A complete list of all accessories and spare parts can be found in the product
catalogues and brochures or on the internet at: www.testo.com

Appendix 21
Appendix
Electronic Probe-Type Detector Instructions (according to SAE 1627)
1. The electric leak detector shall be operated in accordance with the equipment manufacturer`s
operating instructions.
2. Leak test with the engine not in operation.
3. The air conditioning system shall be charged with sufficient refrigerant to have a gauge pressure of
at least 340 kPa when not in operation. At temperatures below 15°C, leaks may not be
measurable, since this pressure may not be reached.
4. Take care not to contaminate the detector probe tip if the part being tested is contaminated. If the
part is particulary dirty, it should be wiped off with a dry shop towel or blown off with shop air. No
cleaners or solvents shall be used, since many electronic detectors are sensitive to their
ingredients.
5. 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 shall 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 arround attachement
points and hold-downs on lines and components.
6. 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 reminder of the system.
7. At each area checked, the probe shall be moved around the location, at a rate no more than 25 to
50mm/s, and no more than 5mm from the surface completely around the position. Slower and
closer movement or the probe greatly improves the likelihood of finding a leak.
8. An apparent leak shall be verified at least once by blowing shop air into the area of the suspected
leak, if necessary, and repeating 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.
9. Leak testing ot the evaporator core while in the air conditioning module shall be accomplished by
turning the air conditioning blower on high for a period of 15s minimum, shutting it off, then
waiting for the refrigerant to accumulate in the case for time specified by 9.1, then inserting the
leak detector probe into the blower resistor block or condensate drain hole if no water is present,
or into the closest opening in the heating/ventilation/air conditioning case to the evaporator, such
as the heater duct or a vent duct. If the detector alarms, a leak apparently has been found.
9.1The accumulation time for evaporator testing is 10min.
10.Following any service to the refrigerant system of vehicle, and any other service which disturbs the
refrigerant system, a leak test of the repair and of the service ports of the refrigerant system shall
be done.
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testo AG
Postfach 11 40, 79849 Lenzkirch
Testo-Straße 1, 79853 Lenzkirch
Telefon: [phone]
Fax: [phone]
E-Mail: [email protected]
Internet: http://www.testo.com
0973.3164 de en 05
www.testo.com