Maintenance Requirements; Bump Testing - Emerson MRLDS-250 User Manual

SUPPORT CENTER ADVISORY
G. Maintenance Requirements

1. Bump Testing

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A bump test exposes the gas detector to a gas. The operator then observes the gas
detector's response to the gas and it is mainly used to see if gas detector is reacting
to the gas and to determine if all the detector's outputs are working correctly.
After the installation, expose the gas detector to test gas. The gas selected should be
high enough concentration to put the system into alarm and illuminate the LED
display.
With Bump Test, check the following functions of the gas detector:
➢ The LED display will illuminate and show the detected PPM concentration once
the alarm set- point is reached.
➢ The relay and audible alarm will function as configured.
➢ The output (0-10V, for example) will show the gas level.
Ideally, the bump tests are conducted on-site in a clean air atmosphere.
Steps on how to do the Bump Test:
a. Remove the Splash Guard accessory if one is used.
b. Connect the regulator to the test gas port using 3mm or 1/8" inside diameter
tubing. See below image.
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