Troubleshooting - WatchGas NEO Service Manual

Service Manual

3. Troubleshooting

Problem
Cannot turn on power after
charging the battery
Reading abnormally High
Reading abnormally Low
Buzzer inoperative
Inlet flow too low
"Lamp" alarm on during
operation
PC does not recognize
instrument
Photoionization Detector NEO
Possible Reasons
Defective battery
Dirty Filter
Dirty sensor module
Excessive moisture or
water condensation
Incorrect calibration
Dirty Filter
Dirty sensor module
Weak or dirty lamp
Incorrect calibration
Buzzer disabled
Bad buzzer
Pump gasket or diaphragm
damaged or has debris
Flow path leaks
Lamp drive circuit
Weak or defective PID Lamp
Wrong cable
11
Solutions
Call authorized service center
to replace battery
Replace filter
Clean or replace sensor module
Blow-dry the sensor module
Calibrate the unit
Replace Filter
Clean or replace sensor module
Clean or replace lamp
Calibrate the unit
Check that buzzer is not turned off
Call authorized service center
Call authorized service center
Check flow path for leaks;
e.g., sensor module O-ring,
tube connectors, Teflon tube
compression fitting
Turn unit off and back on
Replace UV Lamp
Use WatchGas USB cable P/N M-011-3003-
000
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