INFICON 2020ComboPRO Portable Photoionization Detector - Manual (Page 97)

90 ISP-074-575-P1D 90
General Information
If you have a service-related question about the 2020ComboPRO, consult this
manual first. If you cannot find the answer in this documentation, contact
INFICON’s Technical Support Department.
When you call, please have the following information ready:
1. A description of what happened and what you were doing when the
problem occurred.
2. Any corrective action that you have tried.
3. The exact wording of any messages that appeared on the display.
WARNING
Do not service the 2020ComboPRO in a hazardous location.
Troubleshooting
Situation Cause Action
Zero Air Error Contamination of sample
lines, sample probe, inlet
filter or fittings before the
detector Clean or replace contaminated
item
Span gas and zero air are
mixed up. Ensure that clean air is used to
zero the 2020ComboPRO. If
you are using gas bags, mark
the zero air and span gas bags
clearly.
Ambient air is
contaminated. If you are not sure of the
cleanliness of the ambient air,
use a commercial zero grade
air to zero the
2020ComboPRO.
Span Gas
Error Span gas and zero air are
mixed up. Ensure that clean air is used to
zero the 2020ComboPRO. If
you are using gas bags, mark
the zero air and span gas bags
clearly.
Span gas concentration is
too low. Span gas concentration should
be higher than 25 ppm.