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testo 549

- testo 550 . Digital manifold

Instruction manual

1.800.561.8187info@Testo-Direct.ca www.Testo-Direct.ca

1 Contents

3

1Contents

1Contents ...................................................................................................3

2Safety and the environment....................................................................4

2.1. About this document........................................................................4

2.2. Ensure safety...................................................................................4

2.3. Protecting the environment..............................................................5

3Specifications ..........................................................................................5

3.1. Use ..................................................................................................5

3.2. Technical data .................................................................................6

3.2.1. Bluetooth module (testo 550)..............................................................................6

3.2.2. General technical data ........................................................................................7

4Product description.................................................................................9

4.1. Overview .........................................................................................9

5First steps ..............................................................................................10

6Using the product..................................................................................12

6.1. Preparing for measurement...........................................................12

6.1.1. Switching the instrument on..............................................................................12

6.1.2. Connecting the temperature sensor .................................................................13

6.1.3. Switching Bluetooth® on and off (testo 550) ....................................................15

6.1.4. Selecting the measuring mode .........................................................................15

6.2. Performing the measurement ........................................................16

7Maintaining the product ........................................................................18

8Tips and assistance...............................................................................19

8.1. Questions and answers .................................................................19

8.2. Measurement parameters .............................................................19

8.3. Error reports ..................................................................................20

8.4. Accessories and spare parts .........................................................20

9EC declaration of Conformity ...............................................................21

1.800.561.8187info@Testo-Direct.ca www.Testo-Direct.ca

2 Safety and the environment

4

2Safety and the environment

2.1. About this document

Use

> Please read this documentation through carefully and

familiarize yourself with the product before putting it to use. Pay

particular attention to the safety instructions and warning advice

in order to prevent injuries and damage to the products.

> Keep this document to hand so that you can refer to it when

necessary.

> Hand this documentation on to any subsequent users of the

product.

Symbols and writing standards

Representation

Explanation

Warning advice, risk level according to the

signal word:

Warning! Serious physical injury may occur.

Caution! Slight physical injury or damage to

the equipment may occur.

> Implement the specified precautionary

measures.

Note: Basic or further information.

Menu

Elements of the instrument, the instrument

display or the program interface.

[OK] Control keys of the instrument or buttons of

the program interface.

2.2. Ensure safety

> Do not operate the instrument if there are signs of damage at

the housing, mains unit or feed lines.

> Do not perform contact measurements on non-insulated, live

parts.

> Do not store the product together with solvents. Do not use any

desiccants.

1.800.561.8187info@Testo-Direct.ca www.Testo-Direct.ca

3 Specifications

5

> Carry out only the maintenance and repair work on this

instrument that is described in the documentation. Follow the

prescribed steps exactly. Use only original spare parts

from Testo.

> Dangers may also arise from the systems being measured or

the measuring environment: Note the safety regulations valid in

your area when performing the measurements.

> If the measuring instrument falls or another comparable

mechanical load occurs, the pipe sections of the refrigerant

hoses may break. The valve positioners may also be damaged,

whereby further damage to the interior of the measuring

instrument may occur that cannot be identified from the outside.

The refrigerant hoses must therefore be replaced with new,

undamaged refrigerant hoses every time the measuring

instrument falls or following any other comparable mechanical

load. Send the measuring instrument to Testo Customer

Service for a technical check for your own safety.

> Make sure that your refrigeration system is properly earthed, as

otherwise the measuring instrument might get damaged.

2.3. Protecting the environment

> Dispose of faulty rechargeable batteries/spent batteries in

accordance with the valid legal specifications.

> At the end of its useful life, send the product to the separate

collection for electric and electronic devices (observe local

regulations) or return the product to Testo for disposal.

> Refrigerant gases can harm the environment. Please note the

applicable environmental regulations.

3Specifications

3.1. Use

testo 549 and testo 550 are digital manifolds for maintenance and

service work on refrigeration systems and heat pumps. They may

only be used by qualified authorized personnel.

The functions of the testo 549 and testo 550 mean they can replace

mechanical manifolds, thermometers and pressure/temperature

charts. Pressures and temperatures can be applied, adapted,

tested and monitored.

1.800.561.8187info@Testo-Direct.ca www.Testo-Direct.ca

3 Specifications

6

testo 549 and testo 550 are compatible with most non-corrosive

refrigerants, water and glycol. testo 549 and testo 550 are not

compatible with refrigerants containing ammonia.

The instruments must not be used in explosive environments!

3.2. Technical data

3.2.1. Bluetooth module (testo 550)

The Bluetooth®

option may only be operated in countries in

which it is type approved.

Feature Values

Bluetooth Range > 20 m (free field)

Bluetooth type LSD Science & Technology Co., Ltd

L Series BLE module (08 May 2013) based

on TI CC254X chip

Qualified Design ID B016552

Bluetooth radio

class

Class 3

Bluetooth company 10274

Certification

Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic,

Denmark, Estonia, Finland, France, Germany, Greece, Hungary,

Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands,

Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden,

United Kingdom.

EFTA countries

Island, Suisse, Norway, Lichtenstein.

1.800.561.8187info@Testo-Direct.ca www.Testo-Direct.ca

3 Specifications

7

Other countries

USA, Canada, Turkey, Hong Kong, Australia, New Zealand.

Information from the FCC (Federal Communications Commission)

This device complies with part 15 of the FCC Rules. Its

commissioning is subject to the following two conditions: (1) This

device may not cause harmful interference and (2) this device must

be able to accept interference, even if this could have undesired

effects on the operation.

Changes

The FCC demands that the user be informed that any changes or

modifications to the instrument that are not explicitly approved by

testo AG may void the user's right to use this instrument.

3.2.2. General technical data

Characteristic

Values

Parameters Pressure: kPa / MPa / bar / psi

Temperature: °C/°F/K

Sensor Pressure: 2 x pressure sensor, temperature:

2 x NTC

Meas. cycle 0,5 s

Measurement

channels

Quantity: 4

Interfaces Pressure connections: 3 x 7/16" UNF

NTC measurement

Measuring ranges HP/LP pressure measuring range: -100 to

6000 kPa / -0.1 to 6 Mpa / -1 to 60 bar (rel)

/ -14.7 to 870 psi

Temperature measuring range: -50 to

+150 °C / -58 to 302°F

Vacuum measuring range (rel): -1 to

0 bar / -14.7 to 0 psi

Overload 65 bar, 6500 kPa, 6,5 Mpa, 940 psi

Resolution Pressure resolution: 0.01 bar/0.1 psi/

1 kPa/0.001 MPa

Temperature resolution: 0.1 °C/0.1 °F

Accuracy (nominal

temperature

22 °C/71.6 °F)

Pressure: ±0,5 % of full scale (±1 digit)

Temperature (-40…150°C): ±0.5 °C (±1 digit)

/0,9°F (±1 Digit)

No. of refrigerants 60

1.800.561.8187info@Testo-Direct.ca www.Testo-Direct.ca

3 Specifications

8

Characteristic Values

Selectable

refrigerants

No refrigerant, R11, R12, R22, R123,

R1234ze, R125, R13B1, R134a, R14,

R142B, R152a, R161, R23, R227, R290,

R32, R401A, R401B, R401C, R402A,

R402B, R404A, R406A, R407A, R407B,

R407C, R407D, R407F, R408A, R409A,

R410A, R411A, R412A, R413A, R414B,

R416A, R417A, R420A, R421A, R421B,

R422A, R422B, R422C, R422D, R424A,

R426A, R427A, R434A, R437A, R438A,

R502, R503, R507, R508A, R508B, R600,

R600a, R718 (H2O), R744 (CO2) (only in

measuring range up to 60 bar), R1234yf

Measurable media Measurable media: All media that are stored

in the testo 549 and testo 550 Not

measurable: Ammonia (R717) and other

refrigerants which contain ammonia

Ambient conditions Operating temperature: -20 to 50 °C/

-4 to 122 °F

Storage temperature: -20 to 60 °C/

-4 to 140 °F

Housing Material: ABS/PA/TPU

Dimensions: 265 x 135 x 75 mm

Weight: approx. 1000 g (without batteries)

IP class 42

Power supply Current source: Rechargeable

batteries/batteries 4x 1.5 V, type

AA/mignon/LR6

Battery life: approx. 250h

(display light off, Bluetooth off)

Display Type: Illuminated LCDResponse time: 0.5 s

Directives,

standards and tests

EC Directive: 2014/30/EC

Warranty Duration: 2 years

1.800.561.8187info@Testo-Direct.ca www.Testo-Direct.ca

4 Product description

9

4Product description

4.1. Overview

Display and control elements

1 Mini-DIN probe socket for NTC temperature probe, with socket

cover

2 Foldable suspension device (on rear)

3 Display. Instrument status icons:

Icon

Significance

Battery capacity

Bluetooth®, (see Switching Bluetooth® on and

off (testo 550), page 15)

/ / Select measuring mode (see Selecting the

measuring mode, page 15)

1.800.561.8187info@Testo-Direct.ca www.Testo-Direct.ca

5 First steps

10

4 Battery compartment. It is not possible to charge rechargeable

batteries in the instrument!

5 Control keys:

Key

Function

[Set] Set units

[R, ►, ■] Select refrigerant/ Start/stop / Tightness

test

[Mode] Switching measuring mode

[Min/Max/Mean] Display min./max./mean values

[▲] Up key: Change display view

[P=0]

Pressure zeroing

Esc Switches to the measurement/home view

[▼] Down key: Change display view

[ / ] Switching the instrument on/off

Switch the display illumination on/off.

6 Sight glass for refrigerant flow

7 2 x valve positioner

8 3 x hose parkers for refrigerant hoses

9 3 x connections 7/16" UNF, brass

Left/right: Low pressure/high pressure, for refrigerant hoses

with quick connect fitting, passage can be locked via valve

positioner. Centre: for refrigerant bottles, for example, with

sealing cap.

10 On the back below the battery compartment cover, mini-USB

connection for firmware update.

5First steps

Inserting batteries/rechargeable batteries

1. Fold out the suspension device and open the battery

compartment (clip lock).

2. Insert batteries (included in delivery) or rechargeable batteries

(4x 1.5 V, type AA/Mignon/LR6) in the battery compartment.

Observe the polarity!

3. Close the battery compartment.

- After inserting the batteries, the instrument switches on

automatically and goes into the settings menu.

1.800.561.8187info@Testo-Direct.ca www.Testo-Direct.ca

5 First steps

11

When not in use for long period: Remove

batteries/rechargeable batteries.

Performing settings

1. Press [Set] repeatedly,

2. Press [▲] or [▼] to select the unit/parameter.

−The settings will be accepted once the last selection has been

made.

Key functions

Representation Explanation

[▲]

or [▼] Change parameter, select unit

[Set] Select units/parameters

Adjustable parameters

Representation Explanation

°C, °F

Set temperature unit.

bar, kPa, MPa, psi Set unit of pressure.

Pabs, Prel

or psig

Depending on the selected unit of pressure:

Switch between absolute and relative

pressure display.

14.7 psi

1.013 bar

Set current absolute pressure

/ / Select measuring mode

AUTO OFF Automatic switch-off time, instrument

switches off after 30 minutes if no

temperature probe is connected and there is

no pressure apart from ambient pressure.

Tfac Temperature compensation factor, icon is

shown on the display if the function is

disabled.

− Settings will be applied following the final selection.

Operating valve positioner

The digital manifold acts like a conventional two-way manifold with

regard to the refrigerant path: The passages are opened by

opening the valves. The adjacent pressure is measured with valves

closed as well as with them open.

> Open valve: Turn valve positioner anticlockwise.

> Close valve: Turn valve positioner clockwise.

1.800.561.8187info@Testo-Direct.ca www.Testo-Direct.ca