(3) Close the sink faucet.
(4) Close the inlet gate valve.
To prolong the life of the water pump,
(5) Open the reservoir gate valve.
make a practice of placing the water
(6) Connect the external water source to inlet
pump circuit breaker in OFF position
located on the left front exterior side of laboratory.
when the water system is not in use.
(7) Open the inlet gate valve.
(8) Observe the sight gage.
2-6. Compressed Gas Cylinders.
(9) When the reservoir is full, close the inlet gate
(10) Close the reservoir gate valve.
f. Operating Water System from External Source.
regulators on compressed gas
bottles (pressurized oxygen and oil
can create an explosion).
Do not operate the water pump while
a. Description. Oxygen, propane, and carbon
using the external water source.
dioxide cylinders are located in the left rear corner of the
rear compartment. The installation and storage of these
(1) Close the inlet gate valve.
cylinders is illustrated in figure 2-4. All cylinders are
(2) Close the reservoir gate valve.
supported in a vertical position by a rack. The propane
(3) Close the sink faucet.
cylinder supplies pro-pane gas to the laboratory piping
system under reduced pressure by means of a
(4) Connect the length of garden hose from sink
detachable pressure-regulating valve.
drain to drain field.
cylinder supplies oxygen to the oxidation stability bath.
(5) Connect the external water source to inlet.
One carbon dioxide cylinder is connected to the dry-ice
(6) Slowly open the inlet gate valve.
machine. The second carbon dioxide cylinder is a spare.
(7) Slowly open the sink faucet and allow incoming-
water to force air from the system.
g. Operating Water System from Reservoir Supply.
The valves on the carbon dioxide
cylinders are designed for upright
(1) Connect the length of garden hose from
operation. The valves must remain
sink drain to drain field.
with the cylinder to be recharged or
(2) Close the sink faucet.
assembled to a new cylinder before
(3) Close the inlet gate valve.
recharging. Recharge cylinders are
(4) Close the reservoir gate valve.
supplied with the laboratory when
(5) Open the air bleed valves on the water
reservoir sight gage.
(6) Start the pump using water pump circuit
breaker located on the main control panel.
b. Controls and Instruments.
(7) Slowly open the sink faucet and allow
pumped water to force air from the system.
(1) Cylinder valve. All cylinders are equipped with a
(8) Check pressure switch to insure that the
valve which controls the flow of gas from the cylinder.
water pump stops operating when the sink faucet
(2) Pressure regulator. All cylinders in corporate
is closed and starts operating when the sink faucet
pressure regulators; the inlet of the regulator is
connected to the cylinder valve outlet On the propane
cylinder, the outlet of the regulator is connected to the
propane line leading into the laboratory area. The
pressure regulator reduce, the pressure of the gas from
cylinder pressure t( the desired working pressure.
(3) Gages. The gages indicate the pressure within
the cylinder and the working pressure of the gas.