Forma Scientific 3158 - Gas Sample Port; Setpoint Adjustment Tool; Factory-Installed Option) Gas Guard Stock #190410

Forma Scientific, Inc.
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5-4
When the Variable/37°C switch is set to the Variable (down) position, control is
assumed by the temperature control potentiometer. The numbers (0 to 60) around the
control knob indicate approximate setpoint values in degrees Centigrade. Any value
between +5°C above ambient temperature and 50°C may be selected. The heater pilot
light will be activated whenever the heater is energized.
e. Gas Sample Port
A sample port for checking CO
2
percentage by independent means (e.g. FYRITE or
similar CO
2
measuring device).
Important!
The Sample Port should never be capped. It is the vent for the incubator
chamber. Refer to Figure 5-2.
f. Setpoint Adjustment Tool
A small screwdriver, located below the circuit breaker, has been provided for setting
the CO
2
and over temp setpoints. Pull out on the knob to release the screwdriver (the
knob is the handle of the screwdriver).
5.4 (FACTORY-INSTALLED OPTION) GAS GUARD STOCK #190410
(Refer to Figure 5-3)
Forma Scientific's stock # 190410 built-in Gas Guard is a monitoring and switching
device for incubator gas supplies.
The unit monitors a two cylinder gas supply. When the active supply tank is depleted,
an audible alarm sounds and the gas guard automatically switches to the second tank.