Test Additional Samples Option; Following A First Sample Failure - AHRI OM 210 Operation Manual

3.18.3

Test Additional Samples Option.

3.18.3.1
maximum number of additional tests requested up to a maximum of three (3).
Following a First Sample Failure. The Participant shall identify the
1. The first additional test shall be performed; this sample is
considered the "second sample" test.
If all of the first additional test's descriptors result in a
a.
rating greater or equal to 95% of the certified rating,
testing shall halt and unused equipment shall be shipped
back to the manufacturer, the original rating shall remain
and no re-rates shall be needed.
b. If any descriptor rating falls below 95% of the certified
rating, the first sample and the second sample shall be
evaluated using the Statistical Analysis Procedure (refer
to Section 3.18.3.1.1) with a T value of 3.078.
c. Following the Statistical Analysis Procedure performed in
1.b., if all descriptors result in a rating greater or equal to
95% of the certified rating, testing shall halt and unused
equipment shall be shipped back to the Participant, the
original rating shall remain and no re-rates shall be
needed.
d. If any descriptor rating falls below 95% of the certified
rating, the Participant may choose to continue testing in
the plan or to concede to a re-rate to the second sample's
test results. In the later case the first additional test
statistic shall stand.
2. If any descriptor still falls below the 95% threshold a second
additional test shall be performed, the first, second and third
samples shall be evaluated using the Statistical Analysis
Procedure with a T value of 1.886.
a. If all descriptors result in a rating greater or equal to 95%
of the certified rating, testing shall halt and unused
equipment shall be shipped back to the Participant, the
original rating shall remain and no re-rates shall be
needed.
b. If any descriptor rating falls below 95% of the certified
rating the Participant may choose to continue testing in
the plan or to concede to a re-rate. In the latter case, the
product shall be re-rated to the rating from the above
procedure.
3. If any descriptor still falls below the 95% threshold a third and
final additional test shall be performed, the first, second, third
and fourth sample shall be evaluated using the Statistical
Analysis Procedure with a T value of 1.638.
USE OM - JANUARY 2017
11