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561 HVACPro 

Users Manual 

12 

Testing Contactors (Starters) 

1.

 

Press 

D

 to select emissivity. Press 

A

 to select LO for bright contacts, or MED for darkened 

contacts. 

2.

 

Press 

C

and the press 

A

 to select MAX. 

3.

 

Measure line and load side of one pole without releasing trigger. 

4.

 

A temperature difference between the line and load sides of a pole indicate increased resistance of 
one point and a contactor may be failing. 

Testing Enclosed Relays 

1.

 

Press 

D

 and then press 

A

 to set emissivity to LO for uninsulated connectors or HI for plastic 

encased relays or for bakelite enclosed relays or insulated connectors. 

2.

 

Press 

C

 and then press

 

A

 to select MAX. 

3.

 

Start the scan. 

4.

 

Measure the relay casing, looking for hot spots. 

5.

 

Measure electrical connections on relay terminals looking for hot spots. 

Testing Fuses and Buss Connections 

1.

 

Press 

D

 and then press 

A

 to set emissivity to HI for paper covered fuse body or insulated 

connections. 

2.

 

Press 

C

 and then press 

A

 to select MAX. 

3.

 

Scan the paper covered length of fuse. 

4.

 

Without releasing the trigger, scan each fuse. Unequal temperatures between fuses may indicate 
voltage or amperage imbalance. 

5.

 

Press 

D

 and then press 

A

 to select LO, for metal fuses end caps and uninsulated buss 

connections. 

6.

 

Press 

C

 and then press 

A

 to select MAX. 

7.

 

Scan each end cap on each fuse. 

Note 

Unequal temperatures or a high temperature indicates loose or corroded connection through 
the fuse buss spring clip. 

Testing Electrical Connections 

1.

 

Press 

D

 and then press 

A

 to select LO emissivity for uninsulated connectors or buss 

connections or HI for insulated connections. 

Note 

Conductors are typically smaller than the Thermometer’s spot size. If the spot size is bigger 
than the connector, the temperature reading is the average within the spot. 

2.

 

Scan the conductor, moving toward direction of electrical connector (quick connect, wire nut, buss 
connection, or lug). 

Summary of Contents for 561 HVACPro

Page 1: ... 561 HVACPro Infrared Thermometer Users Manual PN 2562924 February 2006 2006 Fluke Corporation All rights reserved Printed in USA All product names are trademarks of their respective companies ...

Page 2: ...ce center to obtain return au thorization information then send the product to that Service Center with a descrip tion of the problem THIS WARRANTY IS YOUR ONLY REMEDY NO OTHER WARRANTIES SUCH AS FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSED OR IMPLIED FLUKE IS NOT LIABLE FOR ANY SPECIAL INDIRECT INCIDENTAL OR CONSEQUENTIAL DAMAGES OR LOSSES ARISING FROM ANY CAUSE OR THEORY Since some states or c...

Page 3: ...LD 10 Typical Measurements 10 Measuring Heating Cooling Duct Insulation Jacket Temperature 10 Measuring Dewpoint Temperature 10 Testing Insulated Return Ducts 11 Scanning Walls for Air Leaks or Insulation Deficiencies 11 Testing Contactors Starters 12 Testing Enclosed Relays 12 Testing Fuses and Buss Connections 12 Testing Electrical Connections 12 Testing Bearings 13 Testing Belts and Sheaves 13 ...

Page 4: ...age in Air To Air Evaporators or Condensers 15 Checking Superheat on Fixed Restrictor or Capillary Tube Equipped Evaporators 16 Checking Subcooling on Air To Air Systems With Expansion Valve Equipped Evaporators 16 Maintenance 17 Changing the Battery 17 Cleaning the Lens 17 Cleaning the Housing 17 Troubleshooting 17 CE Certification 17 Specifications 18 ...

Page 5: ...meter was designed specifically for use in heating ventilating and air conditioning HVAC applications Contacting Fluke To contact Fluke call one of the following telephone numbers USA 1 888 44 FLUKE 1 888 443 5853 Canada 1 800 36 FLUKE 1 800 363 5853 Europe 31 40 267 5200 Japan 81 3 3434 0181 Singapore 65 738 5655 Anywhere in the world 1 425 446 5500 For USA Service 1 888 99 FLUKE 1 888 993 5853 O...

Page 6: ...al temperature measurements Do not use in a manner not specified by this manual or the protection supplied by the equipment may be impaired Caution To avoid damaging the thermometer or the equipment under test protect them from the following EMF electro magnetic fields from arc welders induction heaters etc Static electricity Thermal shock caused by large or abrupt ambient temperature changes allo...

Page 7: ...ROM THIS APERTURE CAUTION LASER RADIATION DO NOT STARE INTO BEAM OUTPUT 1mW WAVELENGTH 630 670nm CLASS 2 II LASER PRODUCT COMPLIES WITH FDA 21CFR 1040 10 AND 1040 11 COMPLIES WITH IEC 60825 efh010f eps Figure 1 Symbols and Safety Markings Features The Thermometer includes Single spot Laser Sighting Backlit Display Hard Case Current Temperature Plus MIN MAX DIF Temperature Displays Easy Emissivity ...

Page 8: ... the small temperature display reports a choice of maximum minimum or difference between maximum and minimum temperature You can toggle through the minimum maximum and difference IR temperatures anytime the display is on The MIN MAX and DIF temperatures are constantly calculated and updated when the trigger is pressed After the trigger is released the MIN MAX DIF temperatures are held for 7 second...

Page 9: ...emperature H Low Battery symbol Appears when the battery charge is 25 Figure 3 Thermometer Display Buttons and Connector Button Connector Description C PressCand then press Ato toggle between the MIN MAX and DIF options A The Abutton is used to show the MIN MAX and DIF functions in the secondary display whichever was pressed most recently D Selects the emissivity setting You can toggle between LO ...

Page 10: ...eter at the target pull and hold the trigger Release the trigger to hold a temperature reading Be sure to consider distance to spot size ratio and field of view The laser is used for aiming only Locating a Hot or Cold Spot To find a hot or cold spot aim the Thermometer outside the target area Then slowly scan across the area with an up and down motion until you locate the hot or cold spot See Figu...

Page 11: ...asking tape or flat black paint 148 C 300 F and use the high emissivity setting Allow time for the tape or paint to reach the same temperature as the surface beneath it Measure the temperature of the tape or painted surface If you cannot paint or use tape then you can improve the accuracy of your measurements with the emissivity selector Even with the emissivity selector it can be difficult to get...

Page 12: ...rical Terminal Blocks Medium Oxidized Low Medium Haynes Nickel Alloy Medium Oxidized Low Inconel Platinum Oxidized High Medium Black High Sandblasted Medium Steel Electoropolished Low Cold Rolled High Iron Ground Sheet Medium Oxidized High Medium Polished Sheet Low Rusted Medium Zinc Oxidized Low Switching Between C and F Open the battery compartment and locate the switch positioned between the le...

Page 13: ...sonal injury do not connect the optional external probe to live electrical circuits Connect the probe to the input on the top of the Thermometer The probe temperature and KTC appears in the secondary display The live infrared temperature continues to show in the primary display Connect the temperature probe as shown in Figure 8 efh009f eps Figure 8 Connecting the Temperature Probe ...

Page 14: ...ivated for 7 seconds after the trigger is released HOLD appears in the upper middle of the display When the trigger is pulled again the Thermometer will begin measuring in the last function selected Typical Measurements This section describes a variety of measurements often performed by HVAC technicians The backlight and laser are on whenever you are making readings with the Thermometer Measuring ...

Page 15: ... use through duct test holes 6 Read the return air temperature in the secondary display 7 Seal the test hole when finished Note Temperature differential should be negligible less than 1 to 2 degrees If the temperature difference is too much air leaks or insufficient duct insulation is indicated 8 Seal duct connections at grilles boxes plenums transitions and take offs 9 Retest If the test does not...

Page 16: ... press A to set emissivity to HI for paper covered fuse body or insulated connections 2 Press C and then press A to select MAX 3 Scan the paper covered length of fuse 4 Without releasing the trigger scan each fuse Unequal temperatures between fuses may indicate voltage or amperage imbalance 5 Press D and then press A to select LO for metal fuses end caps and uninsulated buss connections 6 Press C ...

Page 17: ... face of belt where it rides in sheave or to the side of sheave at outer edge whichever is safer or allows easier use of the Thermometer 5 Start recording temperature 6 Slowly move the Thermometer up the belt toward second sheave If belt is slipping sheave temperature will be high from friction If belt is slipping belt temperature will remain high between sheaves If belt is not slipping belt tempe...

Page 18: ...nd then press A to select HI emissivity for vinyl jacketed insulation or painted metal jacketed water heaters 3 Press C and then press A to select DIF 4 Aim the Thermometer at the water heater 5 Scan the water heater jacket 6 Scan in horizontal rows from top to bottom 7 Press C and then press A to read MAX and DIF jacket temperatures Record your readings The closer the jacket temperature is to amb...

Page 19: ... 9 Read supply air temperature on the secondary display 10 Compare supply duct temperature to discharge air temperature They should be nearly equivalent If they are not check for duct leakage or insulation problems 11 Patch the sample hole Verifying Thermostat Room Sensor Accuracy 1 Insert the thermocouple probe into the Thermometer Record ambient air temperature 2 Press D and then press A to sele...

Page 20: ...line temperature 11 Correct superheat is based on outdoor temperature return air wet bulb temperature and 12 5 cubic meters minute per metric ton 400 cfm per ton of air moving across the evaporator Determine required superheat from manufacturer s superheat tables or calculator Add refrigerant to reduce superheat as necessary Recover refrigerant to increase superheat Checking Subcooling on Air To A...

Page 21: ...g the Thermometer do NOT submerge it in water Troubleshooting Symptom Problem Action on display Target temperature is over or under range Select target within specifications B Low battery Replace battery Blank display Possible dead battery Check and or replace battery Laser does not work 1 Low or dead battery 2 Ambient temperature above 40 C 104 F 1 Replace battery 2 Use in area with lower ambient...

Page 22: ... C 32 F to 212 F Probe Accuracy 2 2 C 4 F Display Resolution 0 1 C 0 1 F Secondary Display Information Maximum Minimum Differential KTC Laser Sighting Single point laser Power Class 2 II operation Output 1 mW wavelength 630 to 670 nm Electrical Power Supply 2 AA Batteries alkaline or NiCD Power Consumption At least 12 hours battery life Physical Weight 17 69 cm 6 965 in H x 16 36 cm 6 441 in L x 5...

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