lling the gum bath and fume hood blowers are located on
b. Compressed Air. The compressed air system
the switchplate mounted on the forward, left wall
immediately behind the icemaker. The van-purging
compartment. The air line has four outlet valves, two on
blower is also controlled by a timer located on the left
the left wall, one on the right wall, and one in the fume
(roadside) power entry panel. Van-purging instructions
hood. Ten additional outlet valves are located on the
are located adjacent to the timer. Warning plates
right wall for the purging manifold. The compressed air
cautioning personnel to purge the van before entering
line on the left side of the laboratory compartment
are on all exterior doors. The circuit breaker for all
terminates in a copper tube connected to the pressure
blowers is located on the left wall of the rear
gage in the main control panel.
compartment. The purging circuit breaker is always in
c. Vacuum. The vacuum system originates at the
the ON position.
vacuum pump in the utility compartment. The vacuum
system has two inlet valves on the left wall and an inlet
1-10. Fire Extinguishers. The van is equipped with
valve in the fume hood. The line terminates in a flexible
Copper tube connected to the vacuum gage in the main
four fire extinguishers. Two are located in the laboratory
compartment interior, one to the right of the curbside
d. Propane. The propane gas system originates at
door and one to the left of the rear compartment access
The rear compartment has an extinguisher
the propane gas cylinder in the rear compartment.
mounted on the rear wall between the door and the fuel
Propane is used to operate bunsen burners in the mobile
blending kit. The utility compartment has an extinguisher
laboratory. The system has two outlet valves on the left
mounted to the left of the door.
wall, two valves on the right wall, and one valve in the
1-11. Ladders. A 12-foot extension ladder and two
three-step and one four-step boarding ladders, are
1-9. Blower (Purging). Three blowers are installed
stored on the undercarriage of the van.
the utility compartment. One blower purges fumes from
the van, another exhausts fume from the gum bath, and
another from the fume hood. All blowers are controlled
individually. Switches contro-
data for the petroleum semitrailer van.