Bacharach Parasense GRM2 CO2 Series, Operation & Maintenance Manual

Page: 63 / 97

7-27
Operation & Maintenance Manual
Doc. Ref. MNGRM2CO2 REV. 3
g) Attach the sensor adaptor (6) to the inlet tube (3) of the sample bag.
h)
Open the sample bag valve (5) by turning it 360
0
(one turn) anti-clockwise and insert the sensor
adaptor (6) into the ammonia sensor port (7).
i)
Apply the test gas to the sensor by gently squeezing the sample bag for a period of 60 seconds.
It is important to gently squeeze the bag to ensure a steady flow of test gas for the full 60
seconds. After 60 seconds has elapsed, close valve (5) on the sample bag. At this point, if the
measured concentration is registered and exceeds the critical threshold, and beacon/sounders
and peripheral alarms configured for activation based on a critical threshold breach on that
channel will be activated.
j)
When the test in complete ensure valve (5) is fully closed and disconnect from the gas sensor.
k)
At the GRM2 CO2 monitor
– The ‘SAMMs List’ screen allows you to see the current
concentration of each channel, including the channel used for the system test. From the primary
menu, select ‘SAMMs List’ using the
keys to highlight, then press the key.
Note:
If there is an exclamation mark next to the channel number in the ‘Chan’ column, this
indicates that one or more latched condition is active on that channel.
l)
The ‘Alarms Log’ allows you to see recent concentrations that have breached any configured
thresholds
. From the primary menu select ‘Logs’ using the
keys to highlight, then press the
key.
From the ‘Logs’ menu select ‘Alarms’ and press the
key.
m) Repeat the test for other channels in the system as desired.
In order to maintain a high degree of confidence Parasense recommends that a system test is carried
out on all channels at a maximum of 12 month intervals