Subsystem Checkout; Ac Main Power - Teledyne T200 Operation Manual

Troubleshooting & Service

12.7. SUBSYSTEM CHECKOUT

12.7.1. AC MAIN POWER

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Teledyne API – T200 NO/NO2/NOx Analyzer Operation Manual
Another reason for high (although not necessarily out-of-range) values for Auto Zero
could be the ozone air filter cartridge, if its contents have been exhausted and needs to
be replaced.

This filter cartridge chemicals that can cause chemiluminescence and, if saturated,
these chemicals can break through to the reaction cell, causing an erroneously high
Auto Zero value (background noise).
A dirty reaction cell can cause high Auto Zero values.

Clean the reaction cell according to Section 11.3.9.
Finally, a high HVPS voltage value may cause excess background noise and a high
AZERO value.

The HVPS value changes from analyzer to analyzer and could show nominal values
between 450 and 800 V.

Check the low-level hardware calibration of the preamplifier board and, if necessary,
recalibrate exactly as described in Section 12.8.4 in order to minimize the HVPS.
The preceding sections of this manual discussed a variety of methods for identifying
possible sources of failures or performance problems within the analyzer. In most cases
this included a list of possible causes and, in some cases, quick solutions or at least a
pointer to the appropriate sections describing them. This section describes how to
determine if a certain component or subsystem is actually the cause of the problem being
investigated.
The T200 analyzer‟s electronic systems will operate with any of the specified power
regimes. As long as system is connected to 100-120 VAC or 220-240 VAC at either 50
or 60 Hz it will turn on and after about 30 seconds show a front panel display.

Internally, the status LEDs located on the Relay PCA, Motherboard and CPU should
turn on as soon as the power is supplied.

If they do not, check the circuit breaker built into the ON/OFF switch on the
instruments front panel.

If the instrument is equipped with an internal pump, it will begin to run. If it does not:

Verify that the pump power configuration plug is properly wired (see Section
13.7.1.1 and Figure 13-24)

If the configuration plug is set for 230 VAC and the instrument is plugged into
115 VAC or 100 VAC the sample pump will not start.

If the configuration plug is set for 115 or 100 VAC and the unit is plugged into a 230
VAC circuit, the circuit breaker built into the ON/OFF Switch on the front panel will
trip to the OFF position immediately after power is switched on.

T200's without internal pumps that are configured for 230 V will still turn on at 115
V, but the heaters may burn out or not heat up fast enough.
06858E DCN7057