4
Provide sufficient ventilation to prevent toxic accumulation in breathing
air. Avoid prolonged or repeated breathing of vapor or contact with skin.
Do not take internally.
d. Never pressurize a regulator that has loose or damaged parts
or is in questionable condition. Never loosen a connection or
attempt to remove a part until gas pressure has been relieved.
Under pressure, gas can dangerously propel a loose part.
e. Before transporting a cylinder that is not secured on a cart
suitable for such transport, remove the regulator and recap
the cylinder.
f. Stand on one side of outlet of cylinder valve or regulator when
opening valve.
INTRODUCTION
INSTALLATION
This manual provides installation, operation, and service information for
the Model 308 Series electrically heated single-stage regulators. These
regulators have metal diaphragms which make them ideal for general
laboratory uses as well as pressure control devices for critical analytical
procedures. Generally, these regulators are used for handling both
Carbon Dioxide and Nitrous Oxide.
Either regulator is used for nonsiphon cylinder service. It is a regulation
device used in furnace blanketing, purging, shrink fitting, atomic
absorption and other applications requiring high, steadily-maintained
gas flows.
The Regulator has a 115-volt 1.3 amp or 220-volt .65 amp heating system
consisting of three 50-watt heating cartridges, a primary thermostat
to provide automatic temperature control, and a secondary safety
thermostat cutout.
a. Observe the precautions listed in the SAFETY Section.
b. Connect the regulator to the cylinder valve outlet, checking
that the washer, if required, is in good condition and is in place.
c. This equipment has been supplied with a 3-wire cord. 220v
units will require the addition of a power plug.
