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4.0 Test Performance & Procedures
All equipment is thoroughly inspected at the NuAire Factory at the time of shipment. Quality control is maintained by
constant surveillance over the product, beginning at the receipt of purchased material and concluding with a final inspection,
which certifies the Incubator performance to the specifications. In all instances where product quality cannot be easily
assessed on the end item, the product is inspected during sub-assembly fabrication. The following test procedures are
conducted on every DH Incubator and a copy of the test report is included with each Incubator.
4.1 Visual Inspection
•
Each Incubator is visually inspected to insure that the interior is clean and free from scratches, nicks, and burrs
and that all welds, both interior and exterior are finished.
•
Painted surfaces are inspected to be free of scratches, nicks, insufficient covering, and noticeable paint runs.
•
The doors open and close freely without binding of the hinges.
•
The gasket seals the inner glass door to the Incubator tightly across its entire opening.
•
The glass door is free of scratches.
4.1 Electrical Tests
•
Electrical Leakage Test
All Incubators are required to have a primary-circuit filtering to meet EMC (electromagnetic compatibility) regulations.
Electrical leakage does not exceed 1.0 milliamperes.
•
Dielectric Voltage – Withstand Test
1200 VDC (115 volt units) or 1970 VDC (230 volt units) is applied between dead metal parts and the hot/neutral power
source lead with no electrical breakdown using an Associated Research Model 7564SA Quadchek II, 8106 Omnia 6, or
8006 Omnia 6, or other models.
•
Grounding Continuity
The resistance between the green bonding conductor of the supply cord and any dead metal part of the cabinet shall
not exceed 0.10 ohms.
4.2 Functional Tests
These functional tests are performed on every Incubator over a 48-hour final acceptance test/burn-in period.
All failures are noted, corrected, and the failed test is successfully repeated.
•
Control Systems
All performance and diagnostic functions are exercised to insure proper operation of control systems,
components, and alarms.
•
CO2 Control
Each Incubator is calibrated to function at a 5% CO2 level.
The concentration is checked with an independent calibrated instrument.
Each unit is monitored during the 48-hour burn-in period and only accepted with zero failures.
•
CO2 Recovery
Each Incubator is exercised for CO2 recovery time at the end of the 48-hour burn in period.
The door is opened for 1 minute to deplete the CO2.
After the door is closed, the unit shall recover to 5% +0.2 / - 0.5% within a 5 minute period.
•
Temperature
Each Incubator is monitored for stable temperature control over the 48-hour burn-in period at (37°C).
• Humidity
Each unit has a default RH level intended to avoid condensation.
Door and perimeter duty cycles are determined by a Base duty cycle calculation based on the chamber
Temperature set point. These are the set at the factory but can be adjusted if needed to control condensation
and tune in the chamber temperature uniformity for the environment that the incubator is installed in.
If unit is master reset these settings will be changed to a default value of 100.
The factory default door and perimeter settings are: Door: 100, Perimeter: 100.
OM0211
Rev 3 March 2013
Page 11 of 48
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