Subsystem Checkout; Ac Mains Configuration - Teledyne 400E Instruction Manual

Model 400E Ozone Analyzer
Instruction Manual
11.4.1.3. IZS Ozone Generator Temperature (Optional)
There are three possible causes for the Ozone Generator temperature to have
failed.
1. The O3 Gen heater has failed. Check the resistance between pins 5 and 6 on
the six-pin connector adjacent to the UV Lamp on the O3 Generator. It
should be approximately 5 Ohms.
2. Assuming that the I
the Relay board, the FET Driver on the Relay Board (see Figure 10-2) may
have failed. Using the O3_GEN_HEATER parameter under the SIGNAL I/O
function of the DIAG menu, as described above, turn on and off the UV
Lamp Heater. Check the DC voltage present between pin 1 and 2 on J14 of
the Relay Board.
If the FET Driver has failed there should be no change in the voltage across
pins 1 and 2.
3. If the FET Driver checks out OK, the thermistor temperature sensor in the
lamp assembly may have failed. Unplug the connector to the Ozone
Generator Heater/Thermistor PCB, and measure the resistance of the
thermistor between pins 5 and 6 of the 6 pin connector.

11.5. Subsystem Checkout

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. This section describes how to
determine individually determine if a certain component or subsystem is actually
the cause of the problem being investigated.

11.5.1. AC Mains Configuration

The analyzer is correctly configured for the AC mains voltage in use if:
•
The Sample Pump is running.
If incorrect power is suspected, check that the correct voltage and frequency is
present at the line input on the rear panel.
• If the unit is set for 230 VAC and is plugged into 115VAC, or 100VAC the sample
pump will not start.
• If the unit is set for 115 or 100 VAC and 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.
P/N 04316 Rev: B
TROUBLESHOOTING & REPAIR PROCEDURES
2
C bus is working and that there is no other failure with
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