NEW BRUNSWICK SCIENTIFIC innova 3100, Manual To Operations

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20
New Brunswick Scientific User’s Guide
2. Increase or decrease the setpoint by pressing the
∆
or
∇
key.
The temperature alarms, both audible and flashing light, are activated if the
temperature is more than 1.0
°
C higher or lower than the temperature setpoint.
The alarm will automatically deactivate as the unit achieves the set
temperature.
4.6.2 Deactivating Temperature Control
If desired, the temperature control system may be shut off during set-up for
special investigations.
To deactivate the temperature control system:
1. Press and hold the
∇
key until the setpoint is at 4.0
°
C.
2. While holding the
∇
key, simultaneously press the START/STOP key.
The temperature setpoint display shows “Off” and the heater (and the
cooling coil, if present) will be deactivated.
To reactivate the temperature control:
•
Press the
∆
key until the desired temperature setpoint is displayed.
#
NOTE:
The shaker may be started or stopped by pressing the START/STOP key.
When starting, the unit will automatically return to the last function and
setting. The alarms will be activated until the speed is within 5 RPM or
the temperature is within 1.0
°
C of the setpoint. The alarm will not sound
when the shaker is accelerating or the temperature is changing to satisfy
the setpoint immediately following turning on the power.
4.7 Temperature Offset Calibration
The temperature probe and the temperature controller are calibrated together at the
factory. The temperature probe measures the temperature of the air at the probe’s
location, near the heat exchanger return vent. The controller uses the probe input to
adjust air temperature, up or down, to match the temperature setpoint.