Question about Master Appliance 430/840 DF PROHEAT MASTER HEAT GUNS

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How does it work?

How does heat guns work?

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Heat guns look a lot like hair dryers - but, as many instructions thoughtfully point out, should never be used for drying hair! The method of operation of a hot air gun is similar to a hair dryer: a fan pulls air into the body of the tool and drives it across an electric heating element and out through a nozzle. For stripping paint, the heated air is directed onto the painted surface, causing it to soften so that it can be easily stripped off - either by using a stripping knife or hook. For best results it is best to work up the surface with the heat gun above the stripping tool, softening the paint just before the stripping tool reaches it. The tool is used one-handed, with the other hand to hold the stripping tool. Some heat guns can be used sitting on a bench so that two hands are free to use the hot air for other applications.

Posted on Aug 27, 2008

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While thawing ice from rain downspouts, gun shut off. Gun did not get wet. Waited 3 days and gun will not start. Is there a reset anywhere inside gun? Any suggestions? Thank You


Just a wild guess. The heat gun has a thermal cutoff switch just like a hair dryer that will interrupt the voltage when the temperature gets too high. That temperature can get too high if you get the output nozzel too close to the work area and heat builds up inside the gun and operates the thermal switch. Usually the spring loaded thermal switch will return to normal after the switch cools down. apparently not so with your gun. The spring either broke,jamed or the contacts on the switch broke. You can use a multimeter to check this out, or temporarly jumper around the switch to see if it will turn on, but do not leave the jumper on too long as that is sort of dangerous.

Feb 04, 2011 | Master Appliance Tools & Hardware - Others

2 Answers

8975 does nothing,voltage out of switch but does not heat up or blow air


I have 4 dead MW heat guns with the same problem. The most common problem is a blown fuse in the heating element assembly which prevents the circuit from being completed. It is attached inline with the Red wire. Test the fuse with an Ohm meter, then use a jumper cable to temporarily jump the fuse. The fan and heater should then work. Replace the fuse and you will have a working heat gun

Nov 26, 2010 | Milwaukee Tool Milwaukee 8975 - 6 Dual...

2 Answers

Milwaukee 8977 - 20 Variable Temperature Heat Gun blows air but no heat. how do you troubleshoot the circuit board or the heating element?


With out the thing plugged in with an OHM meter the heting element can be checked with the nose removed. Most of the time once the nose is removed the problem is easy to see the end is burnt off the element connection. Remake the connection reinstall the nose and test. The heating element runns right off the switch and the connection there is easy to see with the handle opened. This is simple unit and wires burnt off from being too hot is almost always the problem. look it over carfully and the problem will be seen.

Apr 21, 2010 | Milwaukee Tool Milwaukee 8977 - 20...

1 Answer

CAN i USE THE HEAT GUN TO WELD VYNAL TOGETHER


You need the proper type of heat gun and the proper type of filler. It is mainly used for thicknesses over 1/4". The vinyl on a lounge would melt away from the ambient heat created by the gun.

Mar 11, 2009 | Master Appliance 650DG F MASTERMITE MASTER...

1 Answer

Central heat gas furnace lights and works for 10 seconds , does t


replaced flame sensor and still had same problem so I had to replace main control board 350$ and it is working great.

Jan 15, 2009 | Central Dual Temperature Heat Gun Kit...

1 Answer

General Knowledge


Yes!  It is not very powerful, but the blower serves to move heat away from the heat coils and toward the work.

Dec 16, 2008 | Northern Industrial Tools Northern...

1 Answer

General interest


Purchased the Northern Industrial Dual Temperature Heat Gun Kit - Model# RP2049K Instead





Price
$27.99


332049_med.jpg 332049 FREE SHIPPING — Northern Industrial Dual Temperature Heat Gun Kit - Model# RP2049K

Dec 16, 2008 | Pro Line 10 Pc. Proline Heat Gun Kit In...

1 Answer

Heat Guns Features


As such a simple tool, there are not many differences between one model of heat gun and another - but there are some features which are important. * Wattage - commonly from 1000W to 2000W (a measure of the power of the gun). Providing that there are heat and/or airflow controls, the higher the wattage, the better. * Main control switch - usually mounted on the front of the pistol grip, and normally a 'dead man' switch so that power is switched off when the finger pressure is removed - an ideal safety feature as the heat gun stops if it is accidentally dropped. * Temperature setting - at least 500°C is needed for stripping paint - the lower the bottom end of the range the more useful. A choice of controls make the tool more useful. * Airflow setting - having variable or more than one speed makes the tool more versatile. * Thermal cut out - this will switch off the tool if it becomes overheated. If this occurs, it indicates a fault in the tool or method of use - for safety, the fault must be identified and corrected before the heat gun is again used. * Flex length - lengths of 2.5 to 3 m are normally fitted, this means that when using an extension lead, the tool can be used at the full reach without having the socket hanging in mid air. * Hanging hook - useful for storing the tool. * Surface stand - this enables the heat gun to be safety 'rested' during pauses in the work and after uses. It also allows the gun to be used 'hands-free' when two hands are required on the work piece (such as when bending a plastic pipe). * Nozzles - most heat guns have a range of nozzles that can be fitted for specific uses, generally these need to be purchased separately. The main types of nozzles are: 1. Reducer nozzle - when you want to concentrate the heat onto a specific area. 2. Reflector nozzle - wraps round a plastic or copper pipe to spread the heat around the pipe surface. 3. Flat nozzle - for spreading the hot air over a wider narrower area. 4. Glass protector nozzle - for use when stripping paint on a window to keep the direct heat off the glass.

Aug 27, 2008 | Master Appliance 650DG F MASTERMITE MASTER...

1 Answer

Heat Guns Troubleshooting


Uses for the heat gun include: * drying paint or varnish - 30 to 130 °C - care has to be taken as dust particles may be blown onto the paint/varnish. * drying out damp wood (before filling or painting) - around 100 to 200°C. * softening adhesive (such as when applying worktop edge trim or lifting floor tiles) - 300 to 400°C. * bending plastic pipes - 200 to 300°C. * heat-shrinking plastic film - 200 to 300°C. * welding some plastics - 330 to 400°C.

Aug 27, 2008 | B O X Packaging Variable Temperature Heat...

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