TELEDYNE API 480M, Руководство пользователя

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56 Teledyne API Model 480M O
3
Monitor User Manual 09420A DCN8343
8.2.4.2. P
RESSURE
T
OO
L
OW
Something may be restricting the flow through the monitor, causing the sample
pump to pull a vacuum on the sensor module.
First, unplug the sample pump power plug, J9 (Figure 7-3), on the Mainboard PCA
and observe the pressure reading. If the pressure reading is still too low, then likely
there is a problem with the pressure sensor on the Sensor Module and the Sensor
Module should be replaced.
Next, reconnect the pump and disconnect all sample lines from the monitor and see
if the pressure increases to normal levels.
• If it does, then the problem is somewhere in the sampling system external to
the monitor.
• If the pressure is still below the limit with the sample lines removed, then
there is a restriction in the pneumatics of the monitor upstream of the sensor
assembly. The most likely cause is a plugged particulate filter.
o Disconnect the outlet fitting on the sample filter and observe the
pressure. If it returns to normal levels, then the restriction is in the
particulate filter. Replace the particulate filter per Section 7.3.
8.2.5. TECHNICAL ASSISTANCE
If an issue persists, technical assistance may be obtained from:
Teledyne API, Technical Support
9970 Carroll Canyon Road
San Diego, California 92131-1106 USA
Toll-free Phone: +1 800-324-5190
Phone: +1 858-657-9800
Fax: +1 858-657-9816
Email: api-techsupport@teledyne.com
Website: http://www.Teledyne-API.com