Forma Scientific 3546 - 3.15 Connecting the Gas Supply when not using the Gas Guard

Forma Scientific, Inc.__________________________________________Installation/Start-up
3-13
Figure 3-6
Rear view of control panel
Without the gas guard
3.15 Connecting the Gas Supply
when not using the Gas Guard
(Refer to Figure 3-6)
If the gas guard is not to be used, the
gas supply must be connected to the
CO
2
inlet.
To provide for the most economical
use of CO
2
, a main supply of liquid
CO
2
is recommended. The liquid CO
2
should be supplied from tanks without
siphon tubes to ensure that only CO
2
gas enters the incubator injection
system. It is also recommended that a
two-stage pressure regulator with
gauges be installed at the supply
cylinder outlet.
The high pressure gauge should have
an indicating range of 0 to 2000 PSIG to
monitor tank pressure; the low pressure
gauge should have an indicating range
of 0 to 30 PSIG to monitor actual input
pressure to the incubator injection
system. A suitable two-stage pressure
regulator is available from Forma
Scientific, Inc., Stock #965010.
Note: Output pressure from the tanks
must be regulated with a dual stage
pressure gauge set at 10 PSIG. Liquid
substances must be supplied in tanks
without siphon tubes to ensure that only
gas enters the incubator.
The CO
2
supply fitting is
located on the upper left rear corner (as
viewed from the back) of the incubator
control panel. Securely attach the 3/16"
I.D. vinyl CO
2
line to the barbed fitting
and check the connection for leaks. If a
metal line is used, the serrated fitting
can be replaced and an 18 MPT fitting
installed.