The CO
2
gas supply being connected should
be industrial grade 99.5% pure (nominal) and
should not contain siphon tubes. Install a two-stage
pressure regulator at the cylinder outlet. The high
pressure gauge at the tank should have 0-2000
PSIG range. The low pressure gauge, at the incu-
bator inlet, should have a 0-30 PSIG range. Input
pressure to the incubator must be maintained at 15
PSIG (103.4 kPa).
The incubator has serrated fittings on the back
of the cabinet to connect the gas supply. Refer to
Figure 1-13. The fitting is labeled CO
2
Inlet #1
Tank. Make sure that the connections are secured
with clamps. Check all fittings for leaks.
For units having the CO
2
Gas Guard option,
refer to Section 8.2.
k.
Humidity and Loading the Chamber
With the chamber loaded with liquid product and the RH
setpoint at less than 90%, some evaporation of product will
occur. If the actual RH reaches 2% above setpoint, the incuba-
tor microprocessor turns on dehumidification. This process
pulls outside air in through the nebulizer and exhausts air
through the access port. Humidity decreases. However, in the
process, CO
2
consumption increases. Ensure your tank and
product are monitored.
1 - 6
Steri-Cult Incubator _________________________________________________________________Installation and Start-Up
Figure 1-13
Power inlet
connector
