Incubator Start-Up - Thermo Scientific 3110 Operating And Maintenance Manual

Connecting CO
2
System) Gas Supply (cont.)

Incubator Start-Up

Thermo Scientific
or N2 (O
The CO
2
grade, 99.5% pure. Do not use CO
tubes. A siphon tube is used to extract liquid CO
which can damage the pressure regulator. Consult with your gas supplier
to ensure that the CO
gas supply being connected to the incubator should be 99.99% pure. Do
not use liquid nitrogen.
A two-stage pressure regulator is required to be installed on the outlet
valve of the gas cylinder. The high pressure gauge at the tank should have
0-2000 psig range and the low pressure gauge at the incubator inlet should
have a 0-30 psig range. Input pressure to the incubator must be
maintained at 15 psig (103.4kPa) maximum for proper performance of
the CO
If higher purity CO
pure), the pressure regulator should be constructed with a stainless steel
diaphragm along with specifying the purity of the CO
supplier. Follow the manufacturer's instructions to ensure proper and safe
installation of the pressure regulator on the gas cylinder. Gas cylinders
should be secured to a wall or other stationary object to prevent tipping.
Position the gas cylinders to allow unobstructed access to the pressure
regulators so that they can be easily turned off in case of an emergency.
Consult your facility safety officer to ensure that the equipment is installed
in accordance with the codes and regulations applicable in your area.
Note Stored product should be protected by an activated alarm system
capable of initiating a timely response 24 hours/day. These alarms provide
interconnect for centralized monitoring. See Factory Installed Options,
Section 6 for more information.
Now that the incubator has been properly installed, connected to power,
filled with water, humidity pan filled, and connected to gas supplies,
system setpoints can be entered. The following setpoints can be entered in
set mode: temperature, over temperature, CO
Mode, press the Mode key until the Set indicator lights. Press the right
and/or left arrow keys until the proper parameter appears in the message
center. See Chart 1-1 for more detail.
Caution It is the responsibility of the user to validate the proper operation
of each incubator in their specific application(s) with respect to unit
location, operating environment, and settings.
gas supply being connected to the incubator should be industrial
2
cylinder does not contain a siphon tube. The N
2
or O control system.
2 2
is desired inside the incubator (greater than 99.5%
2
Installation and Start-Up
gas cylinders equipped with siphon
2
from the cylinder,
2
from the gas
2
, and O . To enter Set
2 2
s
Water Jacketed CO
Section 1
2
Incubator 1-13
2