Maytag JDB1060AW - Manual (Page 8)

8 16022783 Rev. 0 ©2004 Maytag Appliances Company
VOLTAGE CHECKS
Generally, these checks will consist of taking readings
at the wall receptacle in order to determine the
availability of voltage to the product. Voltage checks on
individual components of a product are not
recommended due to the possibility of electrical shock.
Component part testing is best accomplished through
continuity checks with an Appliance Test Meter.
NOTE: Use of the meter on voltage higher than the
indicated range may cause permanent damage to the
meter. To prevent damage, first select highest range and
then lower the range for readings which fall within the
lower scale.
Clamp-On Ammeter
can be used to detect shorts.
Overloads on the circuit breaker
or fuse can be traced
to either the appliance
or circuit breaker by
checking the current
draw.
Each circuit in an appliance has a "Normal" current
draw, which is an indication of the performance of that
circuit. Current draw levels of less than or more than
normal give clues to possible malfunctions. The clamp-
on ammeter measures these circuits without breaking
the circuit by measuring the strength of the magnetic
field developed around each conductor. Current is read
by separating the conductors and clamping the jaws of
the ammeter around each conductor on which current is
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.
NOTE: Overloads on a circuit breaker or fuse can be
traced to the product being tested or the circuit breaker
(or fuse) by checking the products current draw. If the
amperage reading is less than the breaker reading, the
breaker or fuse box is at fault.
Use of Ammeter on dishwasher:
1. Motor Current - the reading can be taken at the
leads on the motor start relay or at the male connec-
tor.
2. Heating Element Current - The reading can be
taken using either lead to the element.
Motor Test Cord
A motor test cord may be used to electrically check
operation of the various electrical components without
removing them from the unit. Testing in this manner
merely determines whether or not the part will function
independently of other electrical components. In order to
make accurate tests, proper connection of the motor test
cord is important. With the aid of the drawings under
Drive Motor Test, installation of the motor test cord may
be done quickly and accurately.
Grounding and Polarity
The receptacle used for all Maytag products operating on
120 VAC must be properly grounded and polarized.
The power cord used on the appliances should be
equipped with a three (3) prong polarized grounding plug
To avoid risk of personal injury or death due to
electrical shock:
•
Disconnect electrical power to dishwasher before
servicing.
•
Always plug test cord into a properly grounded
receptacle.
DANGER
!
To avoid risk of personal injury or death due to
electrical shock:
•
Do not cut or remove the grounding prong from any
plug.
DANGER
!
•
Always make connection to components before
plugging test cord into receptacle.
ELECTRICAL EQUIPMENT & TESTING