17
7.5 Heating Elements
Household appliances such as coffee makers and water
heaters contain heating elements which may require
troubleshooting. When making continuity checks on heating
elements, disconnect the element(s) from the circuit(s) that
supply it/them. Touch the test leads, one on each end of the
element and observe the needle indicator. The reading should
indicate low ohms. If the needle indicator doesn’t move, or if
the continuity buzzer is being used and does not sound, the
heating element is broken. If the element(s) show that
continuity exists, test for continuity of the circuit(s) that feed
the element(s) .
7.6 Thermostats
Make sure the thermostat control is in the OFF position.
Remove the thermostat cover. Touch the test leads to the
contact points on the thermostat. The needle indicator should
move to read -0- ohms, or if the continuity buzzer is being
used, it should sound. If not, either one of the contacts may be
loose or broken.
The decibel feature of this multimeter is for transistor gain
measurement in electronic circuits and should not be
confused with audio decibels. This function is used primarily
by electronics technicians to measure the power gain in
transistors, and is rarely encountered in home
project applications.
1) Fully seat the test leads in the correct input jacks.
2) Set the function/range switch to any one of the AC voltage
ranges and read the decibel measurement on the bottom
(red) scale of the faceplate. Based on the AC voltage
8.0 Decibel Measurement
Figure 12
range you selected, you will need to compute the actual
measurement by using the decibel conversion chart
located at the bottom right of the faceplate.
Important: For absolute decibel measurements, circuit
impedance must be at least 600 ohms. -0- decibels = 1
milliwatt in a 600 ohm impedance (equivalent to 0.775 volts
across 600 ohms).
1) Remove the screws in the battery/fuse cover and carefully
separate from the front.
2) Note the polarity of the batteries when removing them
from their compartments and replace.
3) Use GB catalog number GF-0306 .5 Amp/250 Volt
replacement fuses.
4) Carefully replace the battery/fuse cover and tighten the
screws. Do not overtighten the screws as this may strip
the threads in the tester housing.
Order Form
Learn more about using multimeters with "How To Use Your
Multitester For Electrical Testing and Troubleshooting". A
160-page guide to using analog and digital multimeters. Only
available in English. Contains nine chapters of easy to
understand instructions on basic household, automotive
electrical and electronic circuit testing. Packed with
illustrations. Paperback bound. Available wherever
multimeters are sold or:
For customers within the US, send check or money
order for $15.23 per copy ($13.23 plus $2.00 per
copy shipping and handling) to:
Gardner Bender
P.O. Box 3241
Milwaukee, WI 53201-3241
Name
Address
City State Zip
Qty. Ordered
Please print clearly.
9.0 Battery and Fuse Replacement
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