Co 2 Gas Guard - Thermo Scientific 310 User Manual

CO Gas Guard
2
Connecting the CO
De-activating the Gas
Thermo Scientific
Warning CO
Section 1 of this manual.
The Model 310 Series incubators can be equipped with a built-in Gas
Guard system (P/N 190640) that will operate with a CO
Gas Guard uses two pressure switches to continuously monitor the
pressures of two independent CO
from one supply to the other when the supply pressure drops below 10
psig (0.690 bar). The Gas Guard's design does not facilitate use by
multiple incubators.
The CO
with gauges. The high pressure gauge at the tank should have a 0-2000
psig range and the low pressure gauge should have a 0-30 psig range. The
gas supply to the incubator must be maintained at 15 psig (1.034 bar), ±5
psig. Gas pressures below 15 psig will cause nuisance alarms to occur on
incubators equipped with the built-in Gas Guard.
Figure 6-6. Connect Gas Supplies
Gas
The CO
2
Using 1/4" ID tubing, connect one of the CO
Supplies
labeled CO2 Inlet #1 Tank. Connect the second CO
fitting labeled CO2 Inlet #2 Tank. Install 3/8" hose clamps to secure the
1/4" ID tubing to the fittings on the back of the drawer. (Refer to Figure
6-6.)
The built-in Gas Guard is turned ON when shipped from the factory. In
addition, the Tank Sel for the Gas Guard is specified as Tank 1 when
Guard
shipped. Refer to Section 3, Configuration, to de-activate the Gas Guard
or change the Tank Sel from #1 to #2. If the Gas Guard system is not
used, the incubator will function normally by supplying CO
supply tank connected to Inlet #1.
can be lethal in high concentrations. Refer to warnings in
2
s
gas supplies must be equipped with two-stage pressure regulators
2
inlets for the Gas Guard are located on the back of the cabinet.
2
supplies and automatically switches
2
supply tanks to the fitting
2
supply tank to the
2
Model 310 Series DH Incubator
Section 6
Factory Options
gas supply. The
2
from the
2
6-5