testo 570 · Digital manifold
Instruction manual
2
1 Contents
1 Contents
1 Contents ...................................................................................................3
2 Safety and the environment....................................................................5
2.1.
About this document........................................................................5
2.2.
Ensure safety...................................................................................6
2.3.
Protecting the environment..............................................................6
3 Specifications ..........................................................................................7
3.1.
Use ..................................................................................................7
3.2.
Technical data .................................................................................7
4 Product description...............................................................................10
4.1.
Overview........................................................................................10
5 First steps ..............................................................................................13
6 Using the product ..................................................................................17
6.1.
Preparing for measurement ...........................................................17
6.1.1.
Connecting temperature probe and accessories............................................17
6.1.2.
Switching the instrument on ...........................................................................19
6.1.3.
Choosing the measuring mode ......................................................................19
6.2.
Performing the measurement ........................................................20
6.2.1.
Measuring......................................................................................................21
6.2.2.
Tightness test / pressure drop test.................................................................23
6.2.3.
Evacuation / vacuum display..........................................................................23
6.2.4.
Vacuum measurement...................................................................................24
6.2.5.
Charging ........................................................................................................24
6.2.6.
Emptying........................................................................................................25
6.2.7.
Pressure/Compressor ....................................................................................25
6.2.8.
Current...........................................................................................................25
6.2.9.
Efficiency calculation......................................................................................25
6.3.
Saving measurement values .........................................................26
6.4.
Printing measurement values ........................................................27
7 Maintaining the product ........................................................................28
8 Tips and assistance...............................................................................29
8.1.
Questions and answers .................................................................29
8.2.
Measurement parameters .............................................................29
8.3.
Error reports ..................................................................................30
3
1 Contents
8.4.
Accessories and spare parts......................................................... 30
9 Appendix................................................................................................ 31
9.1.
Basis of calculation COP .............................................................. 31
4
2 Safety and the environment
2 Safety 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.
1.
...
2.
...
> ...
- ...
Action: more steps, the sequence must be followed.
Action: a step or an optional step.
Result of an action.
Menu
[OK]
... | ...
Elements of the instrument, the instrument display or the program interface.
Control keys of the instrument or buttons of the program interface.
Functions/paths within a menu.
5
2 Safety and the environment
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.
> 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.
> The objects to be measured or the measurement environment may also pose risks: 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.
> Electrostatic charging can destroy the device. Integrate all the components (system, manifold's valve block, refrigerant bottle etc.) into the potential equalisation (earthing). Please see the safety instructions for the system and the refrigerant used.
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.
6
3 Specifications
3 Specifications
3.1. Use
The testo 570 is a digital manifold for commissioning, maintenance and service work on refrigeration systems and heat pumps. It can be used for fault diagnose and online measurements on refrigeration systems and heat pumps. The testo 570 is only to be used by qualified expert personnel.
With its functions the testo 570 replaces mechanical manifolds, thermometers and pressure/temperature charts. Pressures and temperatures can be applied, adapted, tested and monitored.
Its scope of functions can be considerably extended by means of extensive, separately available accessories, e.g. various temperature sensors, clamp probe, oil pressure probe,
PC software.
The testo 570 is compatible with most of the non-corrosive refrigerants, water and glycol. The testo 570 is not compatible with ammoniac refrigerants.
Then product must not be used in explosive environments!
3.2. Technical data
Feature
Measurement parameters
Values
Pressure: kPa/MPa/bar/psi
Temperature: °C / °F / K
Vacuum: hPa / mbar/ Torr / inH
2 inHg / Pa
O / Micron /
Current: A
1
Measuring sensor Pressure: 2 x pressure sensor
Temperature: 3 x NTC
Measuring cycle
Connections
0.75 s
Pressure connections: 3 x 7/16" UNF+ 1x
5/8“
NTC measurement
1
via clamp probe (optional accessory)
7
3 Specifications
Feature
Measurement ranges
Overload
Resolution
Values
Pressure measurement range HP/LP:
-100…5000 kPa / -0.1…5 M
Pa / -1…50 bar
(rel) / -14.7…725 psi
Temperature measurement range:
-50…+150 °C / -58…302 °F
Measurement range vacuum (rel): -1…0 bar /
-14.7…0 psi
52 bar, 5200 kPa, 5.2 M
Pa, 754 psi
Resolution pressure: 0.01 bar / 0.1 psi /
1 kPa / 0.001 M
Pa
Resolution temperature: 0.1 °C / 0.1 °F /
0.1 K
Accuracy (nominal temperature
22 °C/71.6°F)
Vacuum resolution: 1 hPa / 1 mbar / 0.5 Torr
/ 0.5 inH
2
O / 0.02 inHg / 500 Micron / 100 Pa
Pressure: ±0.5% of final value (±1 digit)
Temperature: ±0.5 °C (±1 Digit),
±0.9 °F (±1 digit), ±0.5 K (±1 digit)
Vacuum: 1% of final value (±1 digit)
No. of refrigerants 40
Selectable refrigerants
No refrigerant, R12, R22, R123, R134a,
R227, R290, R401A, R401B, R402A, R402B,
R404A, R406A, R407A, R407C, R408A,
R409A, R410A, R411A, R413A, R414B,
R416A, R417A, R420A, R421A, R421B,
R422A, R422B, R422D, R424A, R427A,
R434A, R437A, R438A, R502, R503, R507,
R600, R600a, R744 (only in the permissible measurement range up to 50 bar), R1234yf
Further refrigerants can be downloaded under www.testo.com.
Measurable media Measurable media: all media that are stored in the testo 570. 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...60 °C / -4...140 °F
Humidity in area of use: 10 ... 90 %RH
8
3 Specifications
Feature
Housing
IP-class
Power supply
Display
Directives, standards and tests
Values
Material: ABS / PA / TPE
Dimensions approx. 280 x 135 x 75 mm
Weight: approx. 1200 g (without batteries)
42 (position in use hanging down)
Current source: 4 x 1.5 V rechargeable/nonrechargeable batteries
Type AA / Mignon / LR6
Battery life: > 40h (display light off)
Type: Illuminated LCD
Response time: 0.5 s
EC Directive: 2004/108/EC
Terms of warranty: see website www.testo.com/warranty
9
4 Product description
4 Product description
4.1. Overview
Display and control elements
10
1
Sensor socket Mini-DIN for NTC-temperature sensor, with socket cover.
2
Suspension attachment, foldable (backside).
3 Display Instrument status icons:
Icon Meaning
Battery capacity: >75% / >50% / >25% / <10% no battery indication
Instrument is operated with power supply unit.
4 Product description
Icon Meaning
The measurement value is saved; in case of a single measurement the inner circle flashes once, with serial measurements the circle flashes with each save procedure.
4
Battery compartment. Charging rechargeable batteries inside the instrument is not possible!
5
Multi-function keys: The relevant function appears in the display.
[
Key
[
[ESC]
[▲]
[▼]
[p=0]
]
]
Function
Save or print measurement data.
Exit the menu option.
Up-key: Change display view.
Down-key: Change display view.
Zero the pressure sensor in the range +1 to
-1.3 bar.
Switch instrument on / off; short actuation during operation: switches illumination on / off.
7
Inspection glass for refrigerant flow.
8
4 x valve actuators.
9
4 x hose brackets for refrigerant hoses.
10
Connection 7/16“ UNF, brass.
High pressure, for refrigerant hoses with quick release screw fitting, passage for valve actuator lockable.
11
Connection 5/8“ UNF, brass, for vacuum pump.
12
Connection 7/16“ UNF, brass, for e.g. refrigerant cylinders, with screw cap.
13
Connection 7/16“ UNF, brass.
Low pressure for refrigerant hoses with quick release screw fitting, passage for valve actuator lockable.
11
4 Product description
Interfaces
1
Mini-DIN connection for optional temperature sensors and accessories
2
IR-interface for testo protocol printer
3
Mini-USB connection for power supply unit and connection to
PC
CAUTION
Risk of injury from infrared beam!
> Do not direct infrared beam at human eyes!
12
5
5 First steps
First steps
Inserting batteries/rechargeable batteries
1.
Unfold the suspension attachment and open the battery compartment (clip lock).
2.
Insert the batteries (scope of delivery) or rechargeable batteries
(4 x 1.5 V, type AA / NiMH / AA) into the battery compartment.
Observe the polarity!
3.
Close the battery compartment.
When not in use for long period: Take out the batteries / rechargeable batteries.
Recharge the rechargeable batteries completely before using the instrument.
Switching the instrument on
]
.
• All display segments light up (duration: 2s).
- Measurement view is opened.
When switching on the first time after changing the battery:
-
Language
is displayed. This setting has an effect on the date format)
1.
Set the instrument language with
[▲]
and
[▼]
and confirm the input with
[OK]
.
- The display shows date/time.
2.
Adjust the fashing number with
[▲]
and
[▼]
and press
[◄]
and
[►]
to go to the next number.
3.
Confirm the input with
[OK]
.
Unit temperature, pressure, pressure in vacuum mode, weight
- The configuration menu is opened.
13
5 First steps
Display
14
1
Selected pressure mode
2
Condensation temperature/ acc. to temperature sensor right / subcooling / differential temperature sensor left&right. The display reading of measurement values varies in dependence on the set mode
See also Performing the measurement, page 20.
3
[Min/Max/Mean/Normal]
(exemplary for pressure/temperature mode): The middle multi-function key can be used to display the minimum, maximum and mean values.
4
[Mode]
selectable via the right multi-function key
See also Performing the measurement, page 20.
5
[Set]
selectable via the left multi-function key
6
Evaporation temperature / acc. to temperature sensor A / superheating
7
Chosen refrigerant
8
Battery status indication/rech. batt. charge indication
Making settings
1.
Press
[Set]
.
- The configuration menu is opened.
2. Select function and set parameters:
Key functions
Representation Explanation
[▲]
or
[▼]
Choose function/setting
[Ok]
Activate function or confirm parameter/setting
[ESC]
Exit the configuration menu
5 First steps
Adjustable parameters
Refrigerant
: Select the refrigerant from the list:
Representation Explanation
R...
Refrigerant number of refrigerant acc. to
ISO 817
T...
Special Testo designation for certain refrigerants
---
no refrigerant selected.
With the software testo Easy Kool you can feed additional refrigerants into the instrument, see separate operating instructions.
Efficiency calc.
: Select the procedure (COP heat pump) and enter the required parameters (may vary in dependence on selected procedure). The inputs have an effect on the measuring mode efficiency calc.
See also Performing the measurement, page 20.
See also Basis of calculation COP, page 31.
Temperature unit
: Select the desired unit.
Pressure unit
: Select the desired unit.
Vacuum unit
: Set pressure unit for vacuum.
Pressure mode
: Depending on the chosen unit for pressure:
Change between absolute and relative pressure displays.
Vacuum pressure mode
: Select the pressure mode for the evacuation mode.
See also Performing the measurement, page 20.
Weight unit
: Select the desired unit from the list.
Measuring mode
: Select normal mode, combi mode
15
5 First steps
Display Mode
none Normal mode
Function
Normal function of the digital manifold
Auto
Combi mode When combi mode is activated the digital manifold testo 570 automatically reverses the display of high and low pressure. This automatic reversal occurs when the pressure in the low pressure side is 1 bar higher than the pressure in the high pressure side. This switching over is indicated by
----
flashing in the display. This mode is particularly suitable for air conditioning systems that provide cooling and heating.
Date/Time
: Adjust the flashing number with
[▲]
and
[▼]
and press
[◄]
and
[►]
to go to the next numerical block. Confirm the input with
[OK]
.
Language
(This setting influences the date format): Select the language from the list and press
[OK]
to confirm.
Probe type
: Select the desired probe type from the list.
Device info
: Show serial number and firmware version.
Operating the valve actuators
With respect to the refrigerant flow path the digital manifold behaves just like a conventional four-way manifold. The passages are opened by opening the valves. The applied pressure is measured with the valves closed and the valves opened.
> Open valve: Turn valve actuator anticlockwise.
> Close valve: Turn valve actuator clockwise.
WARNING
Tighten the valve actuator only hand-tight. Do not use any tools for tightening, this could damage the thread.
16
6 Using the product
6 Using the product
6.1. Preparing for measurement
6.1.1. Connecting temperature probe and accessories
Sensors must be connected before the measuring instrument is switched on, so that they are recognised by the instrument.
Surface temperature sensor
An NTC temperature sensor (accessory) must be connected for measuring the pipe temperature and for automatic calculation of superheating and subcooling.
Deactivating the surface compensation factor for immersion and air temperature probe
A surface compensation factor has been set in the measuring instrument to reduce the measuring errors in the main field of applications. This reduces measuring errors when using surface temperature probes.
If the measuring instrument testo 570 is used in combination with insertion or air temperature probes (accessories), this factor must be deactivated:
1.
Press
[Set]
.
2.
Select the
Probe type
.
3.
Select
Immersion probe
.
4.
Press
[Esc]
.
- The surface compensation factor has been deactivated in the device.
For measurements with a surface temperature probe the probe type must be reset to surface probe.
Each time the device is switched on the surface compensation factor is activated again as standard.
17
6 Using the product
Accessories
Clamp probe and oil pressure probe can only plugged to connection (1).
Position the accessory as appropriate for the measurement task:
Measurement task
(measurement channel)
Position
Superheating
Subcooling
Differential temperature
At the end of the evaporator / inlet of compressor
At the end of the condenser / inlet of expansion valve
On the measurement object
Current measurement
Charging/emptying
Oil lubrication of the compressor
On the electrical consumers
On the system
On compressor oil measurement fitting
18
6 Using the product
6.1.2. Switching the instrument on
]
.
Zeroing the pressure sensors
Zero the pressure sensors before every measurement.
✓ All connections must be pressureless (ambient pressure).
> Press
[P=0]
to execute zeroing.
Connecting the refrigerant hoses
Before each measurement check whether the refrigerant hoses are in flawless condition.
✓ The valve actuators are closed.
1.
Connect the refrigerant hoses for low-pressure side (blue) and high-pressure side (red) to the measuring instrument.
2.
Connect the refrigerant hoses to the system.
WARNING
The measuring instrument dropping down or any other comparable mechanical load can cause breakage of the pipe pieces in the refrigerant hoses. The valve actuators may also suffer damage, which in turn could result in further damage inside the measuring instrument, which may not be detectable from outside.
> For your own safety you should return the measuring instrument to the Testo Service for technical inspection.
> You should therefore always replace the refrigerant hoses with new ones after the measuring instrument has dropped down or after any comparable mechanical loading.
6.1.3. Choosing the measuring mode
1.
Press
[Mode]
.
- The configuration menu is opened.
2. Choose the measuring mode.
19
6 Using the product
Key functions
Representation Explanation
[▲]
or
[▼]
Select measuring mode
[Ok]
[ESC]
Enable measuring mode
Exit the menu
Selectable functions
•
Pressure/Temperature
•
Tightness test
•
Evacuation
•
Charging
•
Emptying
•
Pressure/Compressor
•
Current
•
Efficiency calc.
See also Performing the measurement, page 20.
6.2. Performing the measurement
WARNING
Risk of injury caused by pressurized, hot, cold or toxic refrigerants!
> Wear protective goggles and safety gloves.
> Before applying pressure to the measuring instrument: Always fasten the measuring instrument on the suspension attachment to prevent it from falling down (danger of breakage)
> Before each measurement check the refrigerant hoses for flawless condition and correct connection. Do not use any tools to connect the hoses, tighten hoses only hand-tight (max. torque 5.0 Nm / 3.7ft*lb).
> Comply with the permissible measuring range (-1…50 bar).
Pay particular attention in systems with refrigerant R744, since these are frequently operated with higher pressures.
20
6 Using the product
6.2.1. Measuring
✓ The actions described in the chapter “Preparing for measurement” have been performed.
The mode
Pressure/Temperature
is set as standard when starting the device.
1.
Apply pressure to the measuring instrument.
2.
Read the measurement values.
With zeotropic refrigerants, the evaporation temperature to/Ev is displayed after the complete evaporation / the condensation temperature tc/Co is displayed after complete condensation.
The measured temperature must be assigned to the superheating or subcooling side (t oh
<--> t this assignment, the display will show t oh cu
). Dependent on
/T1 resp. Δt oh
/SH or t cu
/T2 resp. Δt cu
/SC, depending on the selected display.
- Reading and display illumination are flashing.
• 1 bar before the critical pressure of the refrigerant is reached,
• when the max. permissible pressure of 49 bar is acceded.
Key functions
>
[▲]
or
[▼]
: Change the readings display.
Possible display combinations:
Evaporation pressure
Refrigerant evaporation
temperature to/Ev
Condensation pressure
Refrigerant condensation
temperature tc/Co or (only with inserted temperature sensor)
Evaporation pressure
Measured temperature t oh
/T1
Condensation pressure
Measured temperature t cu
/T2 or (only with inserted temperature sensor)
Evaporation pressure
Superheating Δt oh
/SH
Condensation pressure
Subcooling Δt cu
/SC or (only with third inserted temperature sensor T3)
Condensation pressure
Measured temperature T3/T3
21
6 Using the product or (only with plugged on clamp probe)
Evaporation pressure Condensation pressure
Measured current value
or (only with inserted oil pressure probe)
Evaporation pressure Condensation pressure
Measured oil pressure P ext
With two inserted NTC sensors (T1/T2) Δt is additionally displayed.
>
[Min/Max/Mean/Normal]
: Show Min. / Max. measurement values, mean values (since switching on).
22
6 Using the product
6.2.2. Tightness test / pressure drop test
The temperature compensated tightness test can be used to check the leak tightness of systems. For this purpose both the system pressure and the ambient temperature are measured over a defined period of time. For this purpose a temperature sensor to measure the ambient temperature may be connected (recommendation: Deactivate the surface compensation factor and use NTC air sensors Art.-
No. 0613 1712).
See also Deactivating the surface compensation factor for immersion and air temperature probe, page 17.
This provides information about the temperature compensated differential pressure and about the temperature at the beginning/end of the test as a result. If no temperature sensor is connected, you may also perform the tightness test without temperature compensation.
✓ The actions described in the chapter “Preparing for measurement” have been performed.
1.
Press
[Mode]
.
2.
Select
[Tightness test]
.
- The tightness test view is opened.
ΔP
is displayed.
3.
Start the tightness test: Press
[Start]
.
4.
End the tightness test: Press
[Stop]
.
- The result is displayed.
6.2.3. Evacuation / vacuum display
The measurement takes place in the low pressure side.
✓ The actions described in the chapter “Preparing for measurement” have been performed.
✓ The vacuum pump is connected to the 5/8’’ connection on the valve block.
1.
Press
[Mode]
.
2.
Select
[Evacuation]
.
- The evacuation view is opened. The current pressure and the evaporation temperature of water (H2O) is displayed.
23
6 Using the product
6.2.4. Vacuum measurement
In order to achieve optimal measuring accuracy in vacuum measurement, the measuring instrument must be zeroed at ambient pressure.
Zeroing at ambient pressure must be performed for each vacuum measurement.
✓ The actions described in the chapter “Preparing for measurement” have been performed.
✓ The desired units have been set.
See Making settings, page 14.
1.
Press
[ ]
.
2.
Zero the measuring instrument at ambient pressure
[p=0]
.
3.
Press
[Mode]
.
4.
Select
[Evacuation]
.
- The evacuation view is displayed.
5.
Start evacuation of the system.
6.2.5. Charging
✓ The actions described in the chapter “Preparing for measurement” have been performed.
1.
Press
[Mode]
.
2.
Select
[Charging]
.
- The charging view is opened.
3.
Enter the value read on the refrigerant scales: Press
[Change]
.
4.
Adjust the flashing number with
[▲]
and
[▼]
and press
[◄]
and
[►]
to go to the next number.
5.
Confirm the input with
[OK]
.
6.
Choose the memory location.
7.
Press
[Save]
.
24
6 Using the product
6.2.6. Emptying
✓ The actions described in the chapter “Preparing for measurement” have been performed.
1.
Press
[Mode]
.
2.
Select
[Emptying]
.
- The emptying view is opened.
3.
Enter the value read on the refrigerant scales: Press
[Change]
.
4.
Adjust the flashing number with
[▲]
and
[▼]
and press
[◄]
and
[►]
to go to the next number.
5.
Confirm the input with
[OK]
.
6.
Choose the memory location.
7.
Press
[Save]
.
6.2.7. Pressure/Compressor
✓ Oil pressure probe connected to the upper Mini-DIN connection.
1.
Press
[Mode]
.
2.
Select
[Pressure/Compressor]
.
- The measurement values for low pressure side and oil pressure
(
p ext
) are displayed.
6.2.8. Current
✓ Clamp probe connected to the upper Mini-DIN connection.
1.
Press
[Mode]
.
2.
Select
[Current]
.
- The measurement value of the current measurement is displayed.
6.2.9. Efficiency calculation
1.
Press
[Mode]
.
2.
Select
[Efficiency calc.]
.
- The efficiency calculation is displayed.
25
6 Using the product
6.3. Saving measurement values
The testo 570 is able to record up to 72h. Measurements can be assigned to the individual categories Customer, Measplace,
Installation and Component and saved, already in the device.
In the device the following standard categories have been pre-set:
Customer
/
Measplace
/
Installation
/
Component
.
These categories can be changed (e.g. testo / Cellar 1 /
Office building 1 / Compressor) and supplemented via the testo software Easy Kool, see separate operating instructions.
Saving a single measurement
✓ The desired measuring mode has been selected.
1.
Press
[ ]
2.
Select
Single measurement
.
3.
Select
Save
.
4.
Select the desired memory location: Press
[▲]
and
[▼]
to set the desired value and press
[◄]
and
[►]
to toggle between
Customer
/
Measplace
/
Installation
/
Component
.
- The set measurement view is displayed. The memory symbol is displayed.
5.
Press
[Save]
.
- The memory symbol flashes and disappears after the measurement data have been saved.
Saving a serial measurement
Depending on the duration of the serial measurement electric power supply via power supply unit may be required.
✓ The desired measuring mode has been selected.
1.
Press
[ ]
.
2.
Select
Serial measurement
.
3.
Setting the measuring cycle: Adjust the flashing number with
[▲]
and
[▼]
and press
[◄]
and
[►]
to go to the next number.
Confirm the input with
[OK]
.
26
6 Using the product
4.
Set measurement period: Adjust the flashing number with
[▲]
and
[▼]
and press
[◄]
and
[►]
to go to the next number.
Confirm the input with
[OK]
.
5.
Select the desired memory location: Press
[▲]
and
[▼]
to set the desired value and press
[◄]
and
[►]
to toggle between
Customer
/
Measplace
/
Installation
/
Component
.
- The set measurement view is displayed. The memory symbol is displayed.
6.
Press
[Start]
.
- The memory symbol flashes in the set measuring cycle when saving the measurement values. Clock (
00:00:00
) shows the remaining measuring duration.
7.
Press
[Stop]
.
- The serial measurement was stopped. Clock (
00:00:00
) shows the residual measuring duration.
- The measurement view is displayed.
6.4. Printing measurement values
From the measuring mode
✓ The desired measuring mode has been selected.
✓ The testo printer (0554 0549) has been switched on.
1.
Press
[ ]
.
2.
Select
Single measurement
.
3.
Align IR interfaces testo 570 and testo printer.
4.
Select
Print
.
- The set measurement view and
printing...
is displayed.
- The printout is generated.
From the device memory
1.
Press
[ ]
.
2.
Select
Memory
.
3.
Navigate to the saved measuring protocol.
4.
Align IR interfaces testo 570 and testo printer.
5.
Select
Print
.
- The printout is generated.
27
7 Maintaining the product
7
The saved measuring protocols can be viewed through the software Easy Kool.
Maintaining the product
Cleaning the instrument
cloth.
Do not use any aggressive cleaning agents or solvents! Weak household cleaning agents and soap suds may be used.
Keeping connections clean
> Keep screw connections clean and free of grease and other deposits, clean with a moist cloth as required.
Removing oil residues
> Carefully blow out oil residues in valve block using compressed air.
Ensuring the measuring accuracy
Testo Customer Service would be glad to further assist you if you so wish.
> Check instrument regularly for leaks (recommended: annually).
Keep to the permissible pressure range!
> Calibrate instrument regularly (recommended: annually).
Changing batteries/rechargeable batteries
✓ Instrument is switched off.
28
1.
Fold out the suspension device, loosen the clip and remove the cover of the battery compartment.
8 Tips and assistance
2.
Remove empty batteries/rechargeable batteries and insert new batteries/rechargeable batteries (4x 1.5 V, type AA, Mignon,
LR6) in the battery compartment. Observe the polarity!
3. Set on and close cover of the battery compartment (clip must engage).
4.
Switch the instrument on.
Changing the valve or valve positioner handle
WARNING
Change of the valve positioners and valves by the customer is not permissible.
> Send the measuring instrument to the Testo Customer Service.
8 Tips and assistance
8.1. Questions and answers
Question
flashes
Possible causes / solution
Batteries are almost empty.
The device switches itself off.
uuuu
lights instead of the measurement parameter display
oooo
lights instead of the measurement parameter display
Residual capacity of batteries too low.
The permissible measuring range has been fallen short of.
> Keep to the permitted measuring range.
The permissible measuring range has been exceeded.
> Keep to the permitted measuring range.
8.2. Measurement parameters
Designation Description
Δtoh SH
Δtcu SC to Ev
Subcooling, condensation pressure
Refrigerant evaporation temperature
29
8 Tips and assistance
Designation Description
tc Co Refrigerant condensation temperature toh T1 Measured tcu T2 Measured temperature, condensation
T3 T3 Measured
8.3. Error reports
----
is lit up instead of measurement parameter display
Display
EEP FAIL
Sensor or cable defective
> Please contact your dealer or
Testo Customer Service
Eeprom defective
> Please contact your dealer or
Testo Customer Service
If you have any questions, please contact your dealer or Testo
Customer Service. The contact details can be found on the back of this document or on the Internet at www.testo.com/service-
contact..
8.4. Accessories and spare parts
Clamp probe for temperature measurement on pipes
The pipe wrap probe with Velcro tape for pipes with a diameter of up to 75 mm, Tmax.
+75 °C, NTC
Water tight NTC surface probe
Sturdy precision NTC air probe
0613 5505
0613 4611
0613 1912
0613 1712
Pipe wrap probe for pipe diameters from 5 to
65 mm
0613 5605
Clamp probe for measuring current consumption on compressors with switchable measuring range
0554 5607
Oil pressure probe to check the oil filling level in the compressor
0638 1742
30
9 Appendix
Power supply unit, 5 VDC 500 mA with Euro plug, 100-250 VAC, 50-60 Hz
Software EasyKool
High speed Testo printer with wireless infrared interface, 1 roll of thermal paper and
4 AA-batteries
USB connecting cable Device-PC
Transport case for measuring instrument, probes and hoses
0554 0447
0554 5604
0554 0549
0449 0047
0516 5700
9
For a complete list of all accessories and spare parts, please refer to the product catalogues and brochures or look up our website www.testo.com
Appendix
9.1. Basis of calculation COP
Heat pump
The heating power and the efficiency calculation. COP heat pump are calculated by the testo 570 as follows:
• Heating power = Volumetric flow rate x density of medium x specific heat capacity x ΔT (K) / 3600
• COP = Heating power / power consumption
The following values can be entered via
[Set]
|
[Efficiency calc.]
:
range Factory setting
Description
Power consumption kW 0,000–9,999 Electric consumption of system
(e.g. compressor)
Volume flow m
3
/h 00.0-99.9 20.0 Volumetric flow rate of fluid in the secondary circuit of the heat pump
(e.g. solar circuit)
31
9 Appendix
Description
Density of medium
Specific heat capacity kg/m³ 0000.0-9999.9 1000.0 kJ/(kg x K)
setting
0,000-9,999 4,182
Density of medium in secondary circuit (e.g. water, salt water, etc.)
Specific heat capacity of medium in secondary circuit (e.g. water, salt water, etc.)
The display of the testo 570 shows the following values:
•
COP
power )
• Feed temperature secondary circuit (e.g. solar circuit)
T1
(
°C
)
• Return temperature secondary circuit (e.g. solar circuit)
T2
(
°C
)
32
0970 5700 en 01
