TESTO 570 User manual

testo 570 · Digital manifold
Instruction manual
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2
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1 Contents
3
1Contents
1Contents ...................................................................................................3
2Safety and the environment....................................................................4
2.1. About this document........................................................................4
2.2. Ensure safety...................................................................................5
2.3. Protecting the environment..............................................................5
3Specifications ..........................................................................................6
3.1. Use ..................................................................................................6
3.2. Technical data .................................................................................6
4Product description.................................................................................9
4.1. Overview..........................................................................................9
5First steps ..............................................................................................11
6Using the product ..................................................................................15
6.1. Preparing for measurement ...........................................................15
6.1.1. Connecting temperature probe, Testo 552 and accessories ..........................15
6.1.2. Switching the instrument on...........................................................................17
6.1.3. Choosing the measuring mode ......................................................................18
6.2. Performing the measurement ........................................................19
6.2.1. Measuring......................................................................................................19
6.2.2. Tightness test / pressure drop test.................................................................20
6.2.3. Evacuation / vacuum display..........................................................................21
6.2.4. Vacuum measurement...................................................................................21
6.2.5. Charging ........................................................................................................22
6.2.6. Emptying........................................................................................................22
6.2.7. Pressure/Compressor ....................................................................................23
6.2.8. Current...........................................................................................................23
6.2.9. Efficiency calculation......................................................................................23
6.3. Saving measurement values .........................................................23
6.4. Printing measurement values ........................................................25
7Maintaining the product ........................................................................26
8Tips and assistance...............................................................................28
8.1. Questions and answers .................................................................28
8.2. Measurement parameters .............................................................28
8.3. Error reports ..................................................................................29
8.4. Accessories and spare parts .........................................................29
9Appendix ................................................................................................30
9.1. Basis of calculation COP ...............................................................30
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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.
1. ...
2. ...
Action: more steps, the sequence must be
followed.
> ... Action: a step or an optional step.
- ... Result of an action.
Menu Elements of the instrument, the instrument
display or the program interface.
[OK] Control keys of the instrument or buttons of
the program interface.
... | ... Functions/paths within a menu.
“...” Example entries
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2 Safety and the environment
5
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 instrument. For online
measurement (instrument connected to PC/laptop) or when
using the mains unit in particular, you should therefore integrate
all components (system, valve manifold of the manifold gauge,
refrigerant bottle, etc.) into the equipotential bonding (earthing
system) prior to measurement. 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.
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3 Specifications
6
3Specifications
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 Values
Measurement
parameters
Pressure: kPa/MPa/bar/psi
Temperature: °C / °F / K
Vacuum: hPa / mbar/ Torr / inH2O / Micron /
inHg / Pa
Current: A1
Measuring sensor Pressure: 2 x pressure sensor
Temperature: 3 x NTC
Measuring cycle 0.75 s
Connections Pressure connections: 3 x 7/16" UNF+ 1x
5/8“
NTC measurement
Interfaces 3x Mini-DIN, 1x Mini-USB, 1 x IR
1via clamp probe (optional accessory)
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3 Specifications
7
Feature Values
Measurement
ranges
Pressure measurement range
HP/LP: -100…5000 kPa / -0.1…5 Mpa
/ -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
Overload 52 bar, 5200 kPa, 5.2 Mpa, 754 psi
Resolution Resolution pressure: 0.01 bar / 0.1 psi /
1 kPa / 0.001 Mpa
Resolution temperature: 0.1 °C / 0.1 °F /
0.1 K
Vacuum resolution: 1 hPa / 1 mbar / 0.5 Torr
/ 0.5 inH2O / 0.02 inHg / 500 Micron / 100 Pa
Accuracy (nominal
temperature
22 °C/71.6°F)
Pressure: ±0.5% of final value (±1 digit)
Temperature (-40…302 °F/-40…+150 °C):
±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.
Memory capacity 10000 single measurements or 50 series
measurements (each with a measuring cycle
of 2 s, measurement period 100 h)
Measuring cycle 2 s...24 h (freely selectable)
Measurable media Measurable media: all media that are stored
in the testo 570. Not measurable: ammonia
(R717) and other refrigerants which contain
ammonia
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3 Specifications
8
Feature Values
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
Housing Material: ABS / PA / TPE
Dimensions approx. 280 x 135 x 75 mm
Weight: approx. 1200 g (without batteries)
IP-class 42 (position in use hanging down)
Power supply Current source: 4 x 1.5 V rechargeable/non-
rechargeable batteries
Type AA / Mignon / LR6
Battery life: > 40h (display light off)
Display Type: Illuminated LCD
Response time: 0.5 s
Directives,
standards and tests
EC Directive: 2004/108/EC
Warranty Duration: 2 years
Terms of warranty: see website
www.testo.com/warranty
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4 Product description
9
4Product description
4.1. Overview
Display and control elements
1Sensor socket Mini-DIN for NTC-temperature sensor, with
socket cover.
2Suspension 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.
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.
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4 Product description
10
4Battery compartment. Charging rechargeable batteries inside
the instrument is not possible!
5Multi-function keys: The relevant function appears in the
display.
6 Control keys:
Key Function
[ ] Save or print measurement data.
[ESC] Exit the menu option.
[▲] Up-key: Change display view.
[▼] Down-key: Change display view.
[p=0] Zero the pressure sensor in the range +1 to
-1.3 bar.
[] Switch instrument on / off; short actuation
during operation: switches illumination on /
off.
7Inspection glass for refrigerant flow.
84 x valve actuators.
94 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.
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5 First steps
11
Interfaces
1Mini-DIN connection for optional temperature sensors, testo 552
and accessories
2IR-interface for testo protocol printer
3Mini-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!
5First 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.
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5 First steps
12
Switching the instrument on
> Press [].
- Initializing phase:
• All display segments light up (duration: 2s).
- Measurement view is opened.
The first time the instrument is switched on after a battery has been
inserted or replaced, the following factory settings are stored:
• Language: English UK
• Date: 01/01/2011
• Time: 12:00
• Temperature unit: °C
• Pressure unit: bar
• Vacuum unit: mbar
• Pressure mode: prel
• Weight unit: kg
• Refrigerant: R12
To change the default settings:
See Making settings, page 13.
Display
1Selected pressure mode
2Condensation 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 19.
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 19.
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5 First steps
13
5[Set] selectable via the left multi-function key
6Evaporation temperature / acc. to temperature sensor A /
superheating
7Chosen refrigerant
8Battery 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
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 19.
See also Basis of calculation COP, page 30.
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.
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5 First steps
14
Vacuum pressure mode: Select the pressure mode for the
evacuation mode.
See also Performing the measurement, page 19.
Weight unit: Select the desired unit from the list.
Measuring mode: Select normal mode, combi mode
Display Mode Function
none Normal mode
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.
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6 Using the product
15
WARNING
Tighten the valve actuator only hand-tight. Do not use any tools for
tightening, this could damage the thread.
WARNING
Valve positioner tightened too tightly.
• Damage to the PTFE seal (1).
• Mechanical deformation of the valve piston (2) leading to the
PTFE seal (1) falling out.
• Damage to the thread of the threaded spindle (3) and the valve
screw (4).
• Broken valve knob (5).
Tighten the valve positioner only hand-tight. Do not use any tools
to tighten the valve positioner.
6Using the product
6.1. Preparing for measurement
6.1.1. Connecting temperature probe, Testo 552 and
accessories
Sensors must be connected before the measuring
instrument is switched on, so that they are recognised by
the instrument.
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6 Using the product
16
• In combination with the testo 570, the testo 552 can be
used as an external high-precision vacuum probe, if
connected to the front of the testo 570 using the
connection cable 0554 5520. The firmware version 1.09
or later must be installed for this.
• Before connecting both devices, the testo 552 must be
switched on.
• The testo 570 will only connect to the testo 552 once
Evacuation mode has been activated.
• The required pressure unit display must be set in the
testo 570.
• In order to be able to use the readings from the testo
552 via the testo 570 in the EasyKool software, you
need EasyKool software version 4.0 or later.
• (See testo 552 instruction manual.)
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.
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6 Using the product
17
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 At the end of the evaporator / inlet of
compressor
Subcooling At the end of the condenser / inlet of
expansion valve
Differential temperature On the measurement object
Current measurement On the electrical consumers
Charging/emptying On the system
Oil lubrication of the
compressor
On compressor oil measurement
fitting
6.1.2. Switching the instrument on
> Press [].
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.
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6 Using the product
18
✓ 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.
Key functions
Representation Explanation
[▲]or [▼]Select measuring mode
[Ok] Enable measuring mode
[ESC] Exit the menu
Selectable functions
• Pressure/Temperature
• Tightness test
• Evacuation
• Charging
• Emptying
• Pressure/Compressor
• Current
• Efficiency calc.
See also Performing the measurement, page 19.
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6 Using the product
19
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.
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 (toh <--> tcu). Dependent on
this assignment, the display will show toh/T1 resp. ∆toh/SH
or tcu/T2 resp. ∆tcu/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.
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6 Using the product
20
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 toh/T1
Condensation pressure
Measured temperature tcu/T2
or (only with inserted temperature sensor)
Evaporation pressure
Superheating ∆toh/SH
Condensation pressure
Subcooling ∆tcu/SC
or (only with third inserted temperature sensor T3)
Condensation pressure
Measured temperature T3/T3
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 Pext
With two inserted NTC sensors (T1/T2) ∆t is additionally displayed.
> [Min/Max/Mean/Normal]: Show Min. / Max. measurement
values, mean values (since switching on).
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 16.
This provides information about the temperature
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