Service Tips - Develop Good Work Habits; Service Tools And Equipment - Electrolux EW30DF65GB Service Manual

Consistently following a standard routine when servicing appliances will insure that you do not
waste time searching for a complex solution to a simple problem. One of the most common mistakes
made by service technicians is failing to verify the incoming power supply to the appliance.
Many times electronic controls and other components are replaced unnecessarily because
the incoming power supply was not verified. When testing the electrical supply the test should be
performed at the terminal block where the power cord or house wiring attaches to the appliance. Verify
that there are 240 volts between L1 & L2 and that there is 120 volts from L1 to Neutral and also from
L2 to Neutral. You should also check the power supply while the appliance is operating or "under load".
The power supply may check good with the product sitting idle but fail when certain components are
turned on. This can be caused by a weak connection in the customer's house wiring, or a faulty circuit
breaker or fuse.
Another common mistake is failure to verify all component part wire harness connections. It is
essential that all component connections be checked visually and with the appropriate circuit tester.
Many times components are assumed to be faulty because they do not operate or there is an error
code displayed by the electronic control system. Often the failure is caused by a loose or miswired
connection which can cause the same error code as a defective component part. Newly installed
appliances may have loose connections resulting from shipping and handling conditions or improper
installation. Check the wiring connections before you order replacement parts.
When the repair has been completed the product should be thoroughly tested to verify that the
service performed corrected the problem and that all of the other features and functions of the product
are in proper working order. The extra time taken to do this will create consumer confidence in your
efficiency and professionalism as well as possibly saving an expensive callback.
In addition to standard hand tools such as wrenches, screwdrivers, pliers, etc; the following
instruments are considered to be essential equipment for technicians servicing Electrolux cooking
products. Proper testing and diagnostic procedures are not possible without these tools.
•
Volt/ohmmeter - Must be capable of voltage measurement from 0 to 500 volts AC and
resistance measurements from 0 to 2 meg-ohms. This usually requires a meter that utilizes
a 9 volt battery. Either digital or analog meters are acceptable however most technicians find
analog meters easier to use. Appropriate test leads and tips are required to test certain
electronic components and connections.
•
Clamp on amp meter - Should be capable of measuring from 0 to 60 amps.
•
Temperature Meter - Should be high quality with thermocouple or electronic
"K-type" test probe. Capable of temperature readings up to 1000 degrees Fahrenheit.
Additional instruments that a technician will need to have access to at various times include the
following:
•
Combustible gas leak detection meter.
•
U tube manometer or equivalent testing device for measuring LP and Natural gas line
pressure on gas ranges. Measurements must be in IWC (inches water column)
•
Carbon Monoxide (CO) detection meter capable of measuring from 0-1000 PPM.
•
Microwave Leak Detection Meter
NOTE: Electrolux Does Not Supply Tools Or Test Instruments.

SERVICE TIPS - DEVELOP GOOD WORK HABITS

SERVICE TOOLS AND EQUIPMENT

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