Technical data

48 Operation and Maintenance Manual
26
The vacuum pump should be placed within approximately 3 feet of the
Detector (elevation not important), in order to connect the vacuum hose
from the back of the Detector to the chemical trap. A hose clamp should be
placed over the hose, and the hose should be connected to the straight end
of the chemical trap. Tighten the hose clamp securely.
27 Place the vacuum pump in an adequately ventilated area or connect an
exhaust line (not provided) to the outlet located at the top of the mist filter.
Attach an aluminum 1/2-inch barbed adapter to the outlet with the metal
clamping ring and another centering o-ring. Secure the exhaust line with a
hose clamp (not provided) to the aluminum adapter. Route the exhaust line
to a fume hood or other suitable discharge location.
28 Shape the exhaust line to capture excess water (see Figure 14). Do not allow
water to condense in the exhaust line and drip back into the coalescing
filter. Alternatively, install a water trap using a vacuum flask after the
coalescing filter to capture excess water and prevent water from dripping
back into the coalescing filter.
WARNING
Vent the exhaust gas from the vacuum pump to fume hood to eliminate any potential haz-
ard.
WARNING
It is imperative that water does not condense in the exhaust line and fall back into the
mist filter. It is recommended that transparent 3/8 inch (0.95 cm) id tubing be used as an
exhaust line.