Heath Consultants Hi Flow Sampler - Manual (Page 56)

Troubleshooting Hi Flow

Sampler
56 Instruction 0055-9017
6 Symptom 7 Probable Cause & Remedy
Low flow rate reading with fully
charged battery.
Flow path obstructed. Check flow path and verify flow rate per Section 4.7
Slow response time. Internal filters are dirty. Replace filters per Section 4.4.
Battery power does not last at
least 4.5 hours.
Battery pack defective. Replace.
Erratic gas readings. a. The entire gas leak is not being captured. Use the proper attachment to
capture leak.
b. Faulty sensor(s). Calibrate both CH
4
sensors per Section 3. Replace any
sensor that fails to calibrate.
Sensor does not calibrate
properly.
a. Wrong calibration gas or insufficient flow being applied to sensor.
Ensure that the calibration setup is correct.
b. Depleted sensor. Replace sensor and recalibrate.
“Calibration Failed” message
appears at bottom of display.
Calibration parameters not within programmed limits due to either
insufficient calibration gas flow, or new calibration value was greater than
50% of the old value. Check calibration setup and re-perform the
calibration procedure. Replace sensor if necessary.
“Memory Full” message appears
at bottom of display.
1000 test records have already been stored in memory. Save all test
records per Section 2.15.1 and/or erase memory per Section 2.15.3.
“No Records Saved” message
appears at bottom of display.
A send records command was given with no records stored in memory.
“Check Background Pump”
message appears at bottom of
display.
Flow to the background-gas pump has been severely reduced. Check that
the background hose is not kinked or blocked, or the internal tubing has
not become blocked (see Figure 4-10). Also check the condition of
background-gas sensor filter, replace as necessary per Section 4.4.3.
“Check Leak Pump” message
appears at bottom of display.
Flow to the leak-gas pump has been severely reduced. Check that the
internal tubing has not become blocked (see Figure 4-10). Also check the
condition of leak-gas sensor filter, replace as necessary per Section 4.4.2.
“Check Background Calibration”
message appears at bottom of
display.
The background-gas sensor needs to be calibrated per Section 3.
“Check Leak Calibration”
message appears at bottom of
display.
The leak-gas sensor needs to be calibrated per Section 3.
“Check Background Offset”
message appears at bottom of
display.
The background-gas sensor did not zero properly during start-up. Switch
OFF instrument and restart in an area with clean air. Replace sensor if
necessary.
“Check Leak Offset” message
appears at bottom of display.
The leak-gas sensor did not zero properly during start-up. Switch OFF
instrument and restart in an area with clean air. Replace sensor if
necessary.
“Check Leak Rate Difference”
message appears at bottom of
display.
The calculated difference between leak rates 1 and 2 was greater than
10%.