Chapter 6 Start-Up; Set The Overtemp Safety Thermostat - Thermo Scientific 3906 Operating Manual

Thermo Scientific
Start-Up
When the humidification system is operational, the environmental chamber may be
started. Preset the controls as follows:
Parameter
Overtemp Safety Thermostat
Undertemp Safety Thermostat
Main Power Switch
Humidity Controller
Temperature Controller
Door Heater
NOTE
When operating the environmental chamber with a light module, always

switch on the cooling
Observe temperature display on the device


Set the Overtemp Safety Thermostat

For best overall performance of the environmental chamber, the refrigeration switch
should be turned On for most applications. When running Low or No humidity at high
temperatures, the refrigeration switch may be turned Off.
The defrost switch must be set to "Auto" when the temperature setpoint is 10°C
or below.
Allow the chamber temperature and humidity to stabilize, then set the overtemp safety
thermostat as follows:
1. Turn the overtemp control knob slowly counterclockwise until the audible alarm
sounds and the overtemp indicator lights.
Unit
Fully Clockwise
Fully Counterclockwise
ON
Desired Setpoint
Desired Setpoint
40% (factory set)
Start-Up |
Chapter 6
Model 3900 Series | 6-1