Specifications

PCA

7 Troubleshooting

7.1 Analyzer Repair

It is recommended that ﬁ eld repair of the PCA

3 be limited to:

• Checks of printed circuit board connectors

• Replacing the probe assembly

• Replacing the ﬁ lter element in the water trap / ﬁ lter assembly

• Replacing sensors

Information on how to perform these repairs is provided in Section 6.

All other repairs should be performed by an authorized Bacharach Service

Center (refer to Section 8.3). Any repairs performed by an unauthor-

ized service organization will void the analyzer’s warranty and release

Bacharach, Inc. of any implied or written product liability.

7.2 Error Symbols

Error symbols are shown in the data ﬁ elds of the Combustion Test screens

and on the printout to indicate the following:

“- - -” Three hyphens or dashes indicates that the calculated data cannot

be displayed because the measured data necessary to make the calculation

is out of range. For calculations to occur, the oxygen level must be below

16% and the stack temperature must be below 2,000 °F (1,093 °C).

“* * *” Three stars appear in the data ﬁ eld of sensors that are not

installed, defective, or found to be in error during warm-up, and also in

the data ﬁ elds of that sensor’s related calculated values. For example, if

the data ﬁ eld of either the NO or NO

sensor contains three stars, then the

NOx data ﬁ eld will also contain three stars.

“X X X” Indicates sensor over range.