Bacharach IAM-100, Installation And Operation Manual

Page: 27 / 36

IAM-100 and Controller Manual
6209-9000 Rev 2 27
CAUTION: Before performing the bump test:
•
Advise occupants, plant operators, and supervisors.
•
Check if the IAM-100 is connected to external systems
then disconnect as instructed by the customer.
•
Deactivate the alarm delay (if active) by removing the
alarm delay jumpers per Figure 7.
•
To ensure higher accuracy, the IAM-100 should be
powered up for at least 24 hours before any
tests/calibration or adjustment are made.
6.2. Bump Testing
After installation, it is recommended to perform a bump test to ensure
proper functionality of the unit.
Expose the sensors to test gas,
preferably target gas.
The bump test should put the system into alarm. The red LED will light
showing the system is in alarm. The delay will prevent the buzzer from
sounding and the relay from switching (if the delay is set).
To test the buzzer and/or relay function, check the delay is set at zero
using the multi-pin connector positions 1 and 2 (as shown in Figure 7)
and expose to gas as above. You can mute the buzzer using the mute
button.
After the gas has cleared and the red LED has switched off you can
reset the alarm relay and buzzer by using the reset button (if manual
reset has been selected).
Before testing the sensors on site the IAM-100 must have been powered
up and allowed to stabilize for several hours, preferably over a period of
24 hours.
When testing the sensors, also ensure that the IAM Controller functions
correctly (if installed) per section 6.4.
NOTE: Ideally bump tests are to be conducted at installation
site in a clean air atmosphere.
IMPORTANT: After a semiconductor sensor is exposed to a
substantial gas leak, the sensor should be checked and
replaced if necessary. After sensor element replacement,
recalibration of the unit using a known concentration of gas is
required.