WMA-5 Operation Manual V. 1.01
70
Water Trap
The water trap (also referred to as a “Float Valve Housing”) is an essential filtration tool when gas is being
drawn to the CO
2
analyzer preventing the carry-over of water from getting into the system.
Periodically inspect the water trap for water and empty as required. To empty, turn the glass counter-
clockwise to remove from the black section at the top and empty. Inspect the “O” ring on the glass piece
periodically and make sure it has a slight smear of silicone grease to aid ease of fitting, improve the seal
and extend the life of the “O” ring and to keep it from cracking or breaking.
Hydrophobic Filter
An internal hydrophobic filter (Part No. 10045-1) is located inside the smaller terminal block enclosure. It
is secured in place by the black viton tubing.
This should be replaced periodically based on environmental conditions. If sampling in dry environments,
we recommend replacing the filter once every 3 months. If sampling in high humidity environments we
recommend that you change it more frequently (once per month). To change, gently pull one end of the
filter assembly from the gas tubing and then repeat on the other side. Connect new filter assembly to the
tubing and reassemble.
Grip glass section with
your hand and turn
counter-clockwise to
empty water as
required
