Model 3050/3052 1-1
Thermo Scientific
Location
Section 1
Introduction
Model 3050/3052 Gas Guard is a monitoring and switching device for
CO
2
and N
2
gas supplies. The unit will monitor 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. The audible
alarm is silenced by manually switching the SILENCE switch to the other
tank position.
Power failure stops the automatic tank switching operation of the Gas
Guard. Gas will continue to flow from Tank #1 in a power failure, if the
tank is not empty. An Uninterrupted Power Source is recommended to
ensure continuous gas flow, no matter which tank is in service at the time
of power failure.
Located on the back of the unit, a voltage selector switch permits the
appropriate voltage selection (115V/230V). The unit is also equipped with
a single remote alarm contact that monitors alarm conditions such as an
empty supply tank, or a power failure to the unit.
Caution
Model 3050/3052 Gas Guard is designed to be used with CO
2
and N
2
only.
s
Locate Model 3050/3052 on a level surface. Provide adequate space near
the incubator for storage of the CO
2
or N
2
cylinders.
Warning
O.S.H.A. Regulations have been established for the handling,
storage, and use of high pressure gas storage cylinders. Consult the latest
edition of the O.S.H.A. Regulations to ensure compliance with all safety
requirements. Also, consult all applicable state and local regulations.
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