Teledyne 201A Manuel d'utilisateur télécharger pdf (Page 19)

Teledyne API Model 201A NH

Analyzer Instruction Manual, 04689, Rev. B1

3.0 MAINTENANCE SCHEDULE

3.1 M201A Maintenance Schedule

The maintenance requirements of the M201A are essentially like a standard M200A

NOx analyzer. Please refer to Table 8-1 in the M200A Operator Manual for the M200A

maintenance schedule.

In Table 3.1 below, there are the extra maintenance items required by the M201A.

Table 3.1: Preventative Maintenance Schedule

Item Maintenance Interval Reference Section

M501NH3 Converter Check every 6 months Section 3.2

Reaction Cell Clean quarterly as

necessary

Sect 9.3.8, Fig 8-3 in

the M200A Manual

AutoZero flow check Quarterly as needed Section 3.3

3.2 Maintaining the M501NH Converter

The M501NH Converter is operated at very high temperature. The center tube in the

converter slowly oxidizes and requires replacement. The most obvious indicator of

failure is no ammonia conversion, despite the converter being at temperature. This is

caused by the oxidized tube breaking off in the converter.

The following procedure describes how to disassemble and replace converter parts.

The various parts in the converter become delicate and brittle after prolonged exposure

to high temperatures. It is therefore a good idea to have a complete set of replacement

parts on hand before starting, as listed in Table 3.1.

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Teledyne 201A Manuel d'utilisateur Page 19