Labconco Guardian 500 Airflow Monitor - Manual (Page 7)

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2.0 Guardian 500 Installation Procedure
1. The Fume Hood comes prepared to accept the Guardian 500 airflow alarm system.
2. First, remove the front panel by lifting it straight up and out away from the hood.
3. Next, remove the cover plate located at the top of the right corner post.
4. Install the monitor to the upper right corner post using the two screws that came
with your kit. See figure 2.
5. The connection of the air monitor, adaptor and hose will follow next.
a. Connect one end of the supplied sidewall adaptor with nut included in your kit by
removing the uppermost plastic plug from the ½” hole in the sidewall of the hood
and replacing it with the adaptor and nut. The nut is located inside the fume hood.
See figure 2.
b. Cut the white hose (1.0” OD x .79” ID) supplied with your monitor. Connect one
end of the hose to the sidewall adaptor. See Figure 3.
c. Connect the other end of the white hose to the air monitor. This completes the
airway connection per figure 3.
6. In your kit you will find an electrical cover plate and snap-in electrical outlet. Snap
the outlet in place making sure that the outlet is secure.
7. Next, remove and discard the electrical cover plate that is on the junction box at
the top of your hood.
8. Wire the cover plate that you just prepared to the existing wires inside the hood
junction box per the wiring diagram on top of the fume hood. Warning: make
sure that the power is disconnected to your hood prior to connecting the new
cover plate.
9. Secure the cover plate to the junction box with the existing screw.
10. Plug the output cord of the power supply to the back of the monitor and plug the
power supply into the outlet on the cover plate of the junction box.
11. Replace the front panel and calibrate your unit using the following calibration
guide.