Manual IVsmart no [005]

Operation
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11
Tests
Do the tests requested in the commissioning report (15 Commissioning Report, page 15)
9.1 Tests when activated EC CO version
9.1.1 Function test
A function test is carried out once the voltage supply is connected, with the displays, the potential-free contact and the
fans being switched on briefly. The control unit has been installed correctly if the power display lights up permanently,
the CO alarm and fault display goes out after 2 seconds and the audible display does the same after 1 second. The po-
tential-free contact must tighten after 1 second and therefore establish a connection between X7.2 and X7.3. In addi-
tion, no faults must be displayed after around 15 seconds. In the Chapter 9.1.3 Visual and audible display, page 11 the
meaning of the different signal types are explained.
9.1.2 Warm-up time
Once the operating voltage has been connected, the control unit is in a warm-up state for around 6.5 minutes. During
this time, no CO measurements are carried out and no CO alarms are triggered. To ensure basic ventilation and to re-
move any raised CO concentrations in the air, the fans are controlled at a minimum speed. The warm-up time is needed
to give the CO sensor enough time for the CO measuring transducer's warm-up phase. Once the warm-up time has
elapsed, the control unit switches to its normal operating state (ready) and CO analysis takes place.
9.1.3 Visual and audible display
The table below distinguishes between the displays based on the control unit's four operating modes.
Table 7 Visible and audible display
Operating mode Audible signal
generator
CO alarm
Red LED
Operation
Green LED
Fault
Yellow LED
Warm-up time No No On No
Ready
No No On No
CO alarm
On
Rapid flashing 2 Hz
On No
Fault 2 fast sounds / min
No On
Rapid flashing 2 Hz
Table 8 Carbon monoxide alarm thresholds
CO concentration for activation of
the CO alarm
Control unit trigger times CO concentration for resetting of the
active CO alarm
30 ppm
No alarm No alarm
50 ppm
After around 75 min
< 40 ppm
100 ppm
After around 25 min
< 40 ppm
300 ppm
After around 1 min
< 40 ppm
10 Operation
Safety information
♦ Observe 2 Important safety information, page 1
11 Troubleshooting/maintenance/repair/CO alarm
Safety information
♦ Observe 2 Important safety information, page 1
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