9 error conditions and service requests – LumaSense Technologies INNOVA 1303 User Manual
Page 41
Chapter 3
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BE1085-14
1303 Multipoint Sampler and Doser
LumaSense Technologies A/S
Page 41 of 60
3.8.4
Check_System Interface Job
This job starts a self-test sequence. This test sequence checks the func-
tions of the 1303’s sampler system with a two-part test, as follows.
1. Check of the sampling pump efficiency and air tightness: all
6 sampling valves are closed, the internal 3-way valve is set to
Waste Air Outlet and the sampling pump started. If the pressure
difference across the pump is less than 40kPa, either the sampling
pump is not operating efficiently, or there is an air-leak around the
pump. This sets the Sampling System Flag in the Warning Flags
byte – see
section 3.9.4
.
2. Check of blocked sampling channels: all 6 sampling valves are
closed, the internal 3-way valve is set to Waste Air Outlet and the
sampling pump started. One by one the sampling valves are
opened. If the resulting pressure difference across the pump (with
open sampling valves) is greater than 25 kPa, then the sampler
system airways are blocked. This sets the Sampling Channel Flag in
the Error Flags byte – see
section 3.9.5
.
If the above conditions cannot be met, the setting of the corresponding
Error flag causes a Service Request to be generated, if enabled – see
section 4.1.1
and
4.2.6
.
Example:
CHECK_SYSTEM<LF>
Starts the 1303’s self-test sequence
as described above.
3.8.5
Reset_System Interface Job
This interface job restarts the 1303. This job does not reset the 1303’s
set-up parameters or calibration data. The 1303 restarts as described
in
section 3.1
. Resetting the 1303 cancels any task which the 1303 was
performing prior to the reset.
Example:
RESET_SYSTEM<LF>
Resets the 1303.
3.9 Error Conditions and Service Requests
If an error arises in the 1303’s hardware, processor system or software,
the 1303 can signal the system controller by generating a Service Re-