Amana 10c5ez Service page 29

Performance Tests
To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit and
discharge capacitor through a 10,000 ohm resistor before attempting to service, unless test procedures require
power to be connected. Ensure all earth wires are connected before certifying unit as repaired and/or
operational.
Performing Cooling Test
1. Attach thermometers to unit under test at specified
locations (see paragraph Using Cooling
Performance Test Thermometers).
2. Apply power to unit under test. Place FAN CONTROL
in high cooling position, TEMPERATURE CONTROL
to coolest setting, and VENT CONTROL to closed
position. Allow unit to run a minimum of 20 minutes
before any readings are taken.
3. Record following temperatures:
A. Temperature at return air vent (Location 1 in
Thermometer Testing Location diagram).
B. Temperature at discharged vent (Location 2 in
Thermometer Testing Location diagram).
C. Wet bulb and dry bulb sling psychrometer read-
ings (see paragraph Taking Sling Psychrometer
Readings).
NOTE: Dry bulb sling psychrometer reading should be
±1 degree of temperature recorded at air
conditioner return vent.
4. Calculate difference between temperature readings
taken in Step 3A and 3B (subtract temperature
recorded in Step 3B from temperature recorded in
Step 3A). Record results.
NOTE: The remaining steps explain how to determine if
unit under test is operating within specifications,
using temperatures recorded in previous steps.
See Cooling Dry Bulb Range Chart (on
Technical Sheet for unit under test) to complete
remaining steps.
!
WARNING
5. Under DRY BULB, in ROOM TEMPERATURE
column, find temperature nearest to the temperature
recorded in Step 3A (for example, if temperature
recorded in step 3A was 87°F, the nearest
temperature on chart would be 85°F). Use associated
wet bulb temperatures (shown in next column on
chart) in following step.
6. Using wet bulb temperatures associated with dry bulb
temperature located in previous step, find
temperature on chart nearest to wet bulb sling
psychrometer reading obtained in Step 3C.
7. Note minimum (MIN) and maximum (MAX) values
shown to right of associated dry bulb/wet bulb
temperatures.
Unit under test is within cooling specifications if
temperature difference calculated in Step 4 falls within
minimum and maximum values noted in Step 7. Unit is
out of specifications if calculation from Step 4 is greater
or less than values from Step 7. (See paragraph
Performance Test Diagnosis Guide for additional
information.)
29 RS5100002 Rev. 0