NuAire NU-5800, Operation And Maintenance Manual

Page: 23 / 48

OM0211 Page 23 of 48
Rev 3 March 2013
8.4.3 Inject Air Status
On the bottom right of the Main screen “Air” text indicates that fresh air is currently being injected into the chamber.
8.4.4 Door Ajar Status
The door ajar white text message indicates when the inner glass door is not closed and latched; the inner glass door
is open. The door ajar status is a result of the pressure switch (open/closed) located along the top middle of the
front panel. After the door is closed, the text will display “Door Closed Delay” indicating the delay time (60 sec
adjustable).
8.4.5 Alarm Status Notice
The “Alarm Status” button indicates is triggered when a timer for a maintenance reminder runs to zero. This text
appears in red just below the NuAire Logo (paragraph 8.4.2 and 8.4.3). The “Alarm Status” button and audible alarm
indicates the abnormality. A catastrophic temperature control condition will de-energize the safety relay and cause
the chamber to cool below the set point. The unit will resume heating when it has recovered from the abnormality.
See section 8.3.5 and 11.0 for more details on Alarms.
8.4.6 Maintenance Required Notice
The “Maintenance Required” button indicates that a check for maintenance should be done. This text appears just
above the AIR CO2 status messages (paragraph 8.4.2 and 8.4.3). This is a visual alert only no alarm will sound. Press
the “Maintenance Required” button to go to the screen that will tell you what maintenance should be performed.
See section 10 for more detailed information regarding this Notice.
8.5 Rear Panel Detail
The rear control panel contains the following functions (BDC-15669)
8.5.1 Power Cord
The power cord is 6.5-foot (2 m) in length, type “SVT” molded plug, allowing for long life and easy cleaning.
8.5.2 Circuit Breaker
All control electronics are protected with a circuit breaker that may trip at 110% of load rating, but will trip at 145%
of load rating in less than 2 seconds.
Should the circuit breaker open (pop-out button will appear), merely depress to reset.
8.5.3 CO
2
Inlet All models
The CO
2
inlet provides a fitting for vinyl tubing.
Be sure to follow the recommended inlet pressure to insure proper flow rates and consistent CO
2
percentage
readings.
8.5.4 Power Switch
The power switch, located at the top of the rear panel, controls all power to the Incubator.
8.5.5 Communication Interface/Alarm
Three receptacle connectors are provided for direct field connection of a computer for 2 way communications and
incubator monitoring/or output to a printer or other device only capable of receiving RS-485 digital information,
dry contact remote alarm indicator, also 4 to 20 mA output to an analog monitoring device or system.