Lazer temp guns are great for "approximate" temps of product and supply air temp etc. and can point out severe issues with other components. You just have to look for the unusual, compare, and viola, you have scanned 100 cases & 15 walkins in 1/2 hour.
Most chains could save a ton of money, with the proper use of temp. checks, and 10 times as much if they knew "what to do" "when" "this" "happens".
Thats why we are $30+/hr. somethings!
Which is way better than 30 something.
[Edited by mccool on 07-18-2005 at 02:55 AM]
Watts New, Ohm My, I been Electrically Commutated. Are U2.
I use my Cooper IR gun during supermarket maintenance. The suction and discharge lines I usually measure, I have wrapped with black 3M electrical tape. I have verified the readings within 1-2 degrees with my probe. Works great as long as the tape is clean and dry. I also find many case fan motors out with a quick jog using the IR gun. (while not do maintenance with a velometer)
Those who oppose IR guns ... do you still use a 260 Simpson meter?
(Because you do not trust digital electronics)
Do you use soap bubles from the kitchen sink at home?
(because you do not trust electronic refrigerant sniffers)
Do you refuse to attach your gages to a sealed system which has schrader valves unless it's a last resort?
(because you dont like to burn your fingers taking off the hi side hose .... all because you dont like to use those new fan-dangled brass no loss fittings on your hoses)
The list could go on ..... but the point of the matter is this:
Lousey mechanics do lousey work and have so so tools and equipment.
Fair mechanics have fair ...
Good mechanics have good ....
And last but not least ... great HVAC/R service mechanics never stop learning!
The only reason they have the best tools is because they do NOT wish to be held back by either wrong techniques NOR inadequate tools/ equipment.
If I were the arrogant type ... I would have a bumper sticker which reads: "I use Fluke Meters ... eat my dust!"