Clamp-On Ammeter - Maytag 111990" Automatic Dryers Service Manual

Gas Valve
Disconnect radiant sensor and igniter
wires. Measure across igniter wires or
igniter plug from valve to get a resist-
ance value of -- 425-450 ohms.
Measure across sensor wires to get a
resistance of -- 450-475 ohms.
Drive Motor
Red terminal to Gray terminal -- 1.5
ohms.
In order to measure the individual
windings the red and gray wires will
have to be pulled off of the start switch.
Run winding only -- 2.25 ohms.
Start Winding only -- 3 ohms.
Glow Bar Igniter
Because of the make-up of the igniter,
the resistance will vary over a rather
wide range. Values from 180 ohms to
400 ohms would be typical with an
igniter at room temperature.
These values are provided so that you
may have an idea of the resistance that
you can see in testing. These resist-
ances are not meant to be used as the
exact values to determine whether a
t;omponent should be replaced. They
\
are provided so that you may have an
idea of the resistance that you can see
in testing components.
EDIGD401 1090
CLAMP-ON AMMETER
Each circuit in an appliance has a
"normal" current draw which is an indi-
cation of the performance of that circuit.
Current draw levels, less than or more
than normal, give clues to malfunctions.
The clamp-on ammeter measures these
currents without breaking the circuit by
measuring the strength of the magnetic
field developed around each conductor.
Current is read by separating the con-
ductors and clamping the jaws of the
ammeter around each conductor on
which current is to be read. Low
amperage readings indicate problems
such as damaged heating elements,
etc. High amperage readings indicate
the unit being tested is operating under
an increased mechanical or electrical
load.
SECTION 1. ELECTRICAL TEST EQUIPMENT
1·3