TESTO 523 Manual de usuario

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Instruction manual en (international)

testo 523

Refrigeration System Analyzer

Safety and environment2

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 Caution!:

Warns of dangers which can lead to injury 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.

iDo not carry out measurements on or near live parts with the measuring

instrument or the probes, if the instrument is not expressly approved for this!

iNever store the instrument together with solvents, do not use dessicants.

iCarry out only repair and maintenance work described in the instruction

manual. Observe the prescribed handling steps. Use only original spare parts

from Testo.

Specifications 3

Warning!

Danger of injury exists if highly pressurized hot, cold and/or toxic

refrigerants escape. For this reason, always wear protective glasses

and protective gloves when carrying out measurements and other

work on the refrigeration system.

If the measuring instrument falls down or is exposed to any other

comparable mechanical strain, the end connections of the refrigerant

hoses can break off. The valve knobs can also be damaged, which

can lead to further damage in the interior of the instrument, which is

not visible externally. For this reason, replace the refrigerant hoses

after any fall or comparable mechanical strain with new, undamaged

refrigerant hoses. For your own safety, send the instrument to Testo

customer service for technical testing.

Protecting the environment

iRefrigerant gases can damage the environment. Observe the relevant

environmental protection regulations.

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.

Specifications

Functions and application

The testo 523 is a refrigeration system analysis instrument for maintenace and

service work on refrigeration systems and heat pumps. It may only be used by

qualified staff.

The functions of the testo 523 enable it to replace mechanical manifolds,

thermometers and pressure/temperature tables. Pressures and temperatures

can be increased, adjusted, checked and monitored.

The testo 523 is compatible with most non-corrosive refrigerants, water and

glycol. The testo 523 is not compatible with refrigerants containing ammonia.

The product may nnot be used in areas where there is danger of explosion!

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Specifications4

Technical data

Measurement parameters

· Pressure: kPa / Mpa / bar / psi, temperature: °C / °F

Measurement sensor

· Pressure: 2x pressure sensor, temperature: Pt100

Measurement channels

· Number: 3

Interfaces

· Pressure connections: 3x 7/16" (1/4 SAE)

· Probes: 1x mini DIN socket for Pt100 temperature

probes

· Printer: IR for compatible Testo printer

Measurement ranges

· Meas. range pressure High Side: 0 to 50bar (rel) / 0 to

725psi (rel) / 0 to 5000kPa (rel) / 0 to 5MPa (rel)

· Meas. range pressure Low Side: 0 to 25bar (rel) / 0 to

362.5psi (rel) / 0 to 2500kPa (rel) / 0 to 2.5MPa (rel),

Overload limit 50bar / 725psi / 5000kPa / 5MPa

· Meas. range temp: -50 to +200°C / -58 to 392°F

Resolution

· Resolution pressure 0.1bar/1.45 psi/10 kPa/0.01MPa

· Resolution temperature: 0.1°C / 0.1°F

Accuracy (Nominal temperature 22°C/71.6°F, ±1 digit)

· Accuracy pressure: ±0.5% of full scale

Refrigerants

· Number: 30

· Measurable media: All refrigerants, nitrogen, water,

glycol. Not measurable: Ammonia (R717) and other

refrigerants containing ammonia

Ambient conditions

· Application temperature: -20 to 60°C / -4 to 140°F

· Storage temperature: -20 to 60°C / -4 to 140°F

Housing

· Material: ABS/PA/TPU

· Dimensions: 265 x 135 x75 mm (10.4 x 5.3 x 3.0“)

· Weight: approx 1200 g (2.7 lbs.)

· Protection class: IP54 / NEMA 3/3S

Current supply

· Current source:rechargeable or standard batteries

4x 1.5V, Type AA/Mignon/LR6

· Battery life: approx. 40h (display illumination off)

Display

· Type:Illuminated LCD

· Refresh rate: 1s

Guidelines, norms and tests

· EC guideline: 2004/108/EEC

Warranty

· Duration: 2 years

· warranty conditions: See web page

www.testo.com/warranty

Product description 5

Product description

At a glance

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IR interface for connection to Testo report

printer

Display: low pressure side (blue), high

pressure side (red)

Display symbols

: Battery capacity ( : full, : empty)

: Print function: data are being transmitted

Probe socket mini DIN for Pt100

temperature probes, with socket cover

Operating buttons

Button functions

: On/Off button: switches instrument on/off.

: Function buttons (4x, orange): respective

function is shown in display.

: Up/Down buttons: change display view.

: Light button: switches display/sight glass

illumination on/off.

: Printer button: transmits data to Testo report

printer

Sight glass for refrigerant flow.

2x valve knobs, with two valve positions

(see ).

3x connections 7/16“ UNF (1/4 SAE), brass.

Left/right: low pressure /high pressure,

for refrigerant hoses with fast screw

connection, flow-through can be closed

with valve.

Centre: for e.g. refrigerant bottles, with

sealing cap.

2x Unlocking buttons for valve knobs

Battery compartment. Rechargeable

batteries cannot be charged in the

instrument!

Fold-away suspension hook, with eye for

a padlock (see ).

Plastic protector

Warning!

Do not remove fitting protector

during measurement and trans-

port. It protects the fittings at the

base of the instrument from un-

due strain or potential breakage.

First steps6

First steps

²Inserting bbatteries/rechargeable bbatteries:

1Fold out the suspension hook and open battery compartment (clip

fastening).

2Insert batteries (included in delivery) or rechargeable batteries (4x 1.5V,

Type AA /Mignon/LR6) into the battery compartment. Observe polarity!

3Close battery compartment.

At longer periods of disuse: Remove batteries.

²Switching iinstrument oon:

iPress .

- Initialization phase:

· All display sements light up (duration: 2s).

· Instrument type, serial number and Firmware version are displayed (duration: 2s).

- The measurement view is opened

-or-

- When switched on for the first time after battery replacement:

StAndArd bAtt flashes.

The battery type used must be entered so that the battery capacity is

correctly displayed. The instrument switches off after one minute, if no

setting is made.

1Press or several times to set the battery type used:

StAndArd bAtt = Standard batteries, rEchArGE bAtt = Rechargeable

batteries.

2Press function button OK to confirm the setting.

- The configuration menu is opened.

3Continue with Making ssettings, step 2.

²Making ssettings:

1Press function button Set.

- The configuration menu is opened and the settable parameter flashes.

First steps 7

2Setting parameters:

Button functions

· : Alter parameter.

· : Change to next parameter.

·OK : Store settings and leave configuration menu.

·esc : Leave configuration menu (without storing).

Settable parameters

·P=0: Set pressure sensors to zero

·bar,kPa,MPa,psi: Set pressure unit.

·Pabs,Prel or psia,psig(depending on pressure unit selected): Switch between display of absolute and

relative pressure.

·°C,°F : Set temperature.

·AutoOff off,on : Automatic switch-off (20min after the last time a button was pressed) switch on/off.

·24hr,am/pm : Switch between 24h and 12h time display.

·88:88 : Set time (hours, minutes).

·day,month,year : Set date (day, month, year).

Example “Set pressure unit”

1 Press function button or several times, until bar,kPa,MPa or psi flashes.

2 Press or several times, until the desired pressure unit appears.

3 Press function button or several times to switch to the next parameter

3Press function button OK to store the settings and leave the configuration

menu.

²Switching iinstrument ooff:

iPress .

²Operating vvalve kknobs:

The function of the valve knobs is independent of the valve position. For

easier operation, unlocking the knobs is recommended. For transport,

stowing the valve knobs is recommended.

iUnlock valve knobs: Press unlocking button.

iStow valve knobs: Press valve knobs into the housing.

The refrigeration system analyzer acts like a conventional two-way manifold

with respect to the refrigerant path: The passage is opened by opening the

valves. The connected pressure is measured measured independently of

whether the valves are open or closed.

iOpen valve: Turn the valve knob anti-clockwise.

iClose valve: Turn the valve knob clockwise.

Warning!

Tighten valve positioner only hand-tight. Do not use tools to tighten

the valve positioner, as the thread may be damaged thereby!

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Using the product8

Using the product

Preparing measurement

²Connecting ttemperature pprobe:

For the measurement of the line temperature and the automatic calculation

of super-heating and sub-cooling, a Pt100 temperature probe (accessory)

must be connected.

Probes must be connected before switching the instrument on, in order for

them to be recognized.

1Open the socket cover on the left-hand side of the instrument.

2Plug the connection plug of the temperature probe into the probe socket.

3Depending on the measurement task, position the probe at the end of the

evaporator (Superheat) or condenser (Sub-cooling).

²Switching iinstrument oon:

iPress .

²Zeroing ppressure ssensors:

Carry out a zeroing of the pressure sensors before each measurement.

The measurement values can be falsified by a change in the position of

the measuring instrument. After zeroing, the position of the measuring

instrument must not be changed. Carry out zeroing before every measure-

ment in order to compensate faulty positioning or long-term zero-point

drift. Zeroing is only possible in a range of ±1bar(rel)/ ±14.5psi (rel) and

0...2bar(abs)/ ±29psi (abs) resprectively.

The connections on the low and high pressure sides must be depres-

surized (ambient pressure).

1Press function button Set.

-p=0 flashes.

2Press OK to carry out zeroing.

²Connecting rrefigerant hhoses:

The valve knobs are closed.

1Connect refrigerant hoses for low pressure side (blue) and high pressure

side (red) to the instrument.

2Connect refrigerant hoses to the system.

Using the product 9

Warning!

If the measuring instrument falls down or is exposed to any other

comparable mechanical strain, the end connections of the refrigerant

hoses can break off. The valve knobs can also be damaged, which

can lead to further damage in the interior of the instrument, which is

not visible externally. For this reason, replace the refrigerant hoses

after any fall or comparable mechanical strain with new, undamaged

refrigerant hoses. For your own safety, send the instrument to Testo

customer service for technical testing.

²Setting rrefrigerant:

1Press right-hand function button (R..., ...T or ---) .

- The refrigerant menu is opened and the selected refrigerant flashes.

2Set refrigerant:

Button functions

· : Change refrigerant.

·OK : Confirm setting and leave refrigerant menu.

·esc : Leave refrigerant menu without applying setting.

Settable refrigerants

·R... : R-number of the refrigerant according to ISO817.

·...T : Special Testo description of certain refrigerants: 1T = R1270, 2T = R407D, 3T = R422D.

·--- : No refrigerant selected.

Example “Setting refrigerant R401B”

1 Press or several times, until R401B flashes.

2 Press function button OK to confirm the setting.

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Using the product10

Carrying out a measurement

Warning!

Danger oofiinjury ddue ttohhighly ppressurized hhot, ccold oorppoisonous

refrigerants!

iAlways secure the measuring instrument with the carabiner

suspension hook before pressurizing the instrument, in order to

prevent falls (danger of breakage).

iBefore each measurement, ensure that the refrigerant hoses are

intact and correctly connected. Do not use tools to connect the

hoses. Connect the hoses only hand-tight (max. torque 5.0Nm/

3.7ft*lb).

iWear protective glasses and protective gloves.

iObserve permitted pressure range!

²Measuring:

The handling steps from the chapter “Preparing measurement” have been

carried out.

1Pressurize the instrument.

2Read off measurement values:

For Zeotropic refrigerants (those with temperature glide), the tempera-

tures to/tc displayed are those at the end of the phase change

(evaporation or condensation) of the last component.

The temperature measured must be allocated to the super-heating or

sub-cooling side (function button toh <--> tcu). Dependent on this

allocation, toh or Δtoh /tsh,or tcu or Δtcu /tsc is displayed.