Ac Power Configuration; Dc Power Supply - Teledyne 100E Instruction Manual

TROUBLESHOOTING & REPAIR
Sample flow checks are useful for monitoring the actual flow of the instrument, to
monitor drift of the internal flow measurement. A decreasing, actual sample flow may
point to slowly clogging pneumatic paths, most likely critical flow orifices or sintered
filters. To perform a sample flow check:
• Disconnect the sample inlet tubing from the rear panel SAMPLE port shown in
Figure 3-2.
• Attach the outlet port of a flow meter to the sample inlet port on the rear panel.
Ensure that the inlet to the flow meter is at atmospheric pressure.
• The sample flow measured with the external flow meter should be 500 cm³/min ±
10%. If a combined sample/ozone air Perma Pure dryer is installed (optional
equipment), the flow will be 640 cm³/min ± 10% (500 cm³/min for the sample
and 140 cm³/min for the ozone generator supply air).
• Low flows indicate blockage somewhere in the pneumatic pathway. See trouble-
shooting chapter 10. for more information on how to fix this.

11.5.3. AC Power Configuration

The M100E can be easily configured for two main power regimes, 100-120 V and 220-
240 V at either 50 or 60 Hz. The analyzer is correctly configured for the AC power
voltage in use if it turns on and shows a front panel display after about 30 seconds.
Internally, several LEDs should turn on as soon as the power is supplied. If an incorrect
power configuration is suspected, check for the correct voltage and frequency at the line
input on the rear panel.
• If the unit is set for 220-240 V and is plugged into 100-120 V, the analyzer will not
start.
• If the unit is set for 100-120 V and is plugged into 220-240 V, 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. Note that the analyzer will be severely
damaged if 220-240 V is supplied to it when configured for 100-120 V. Never
bypass the power switch or circuit breaker.

11.5.4. DC Power Supply

If you have determined that the analyzer's AC main power is working, but the unit is still
not operating properly, there may be a problem with one of the instrument's switching
power supplies, which convert AC power to 5 and ±15 V (PS1) as well as +12 V DC
power (PS2). The supplies can either have DC output at all or a noisy output
(fluctuating).
To assist tracing DC Power Supply problems, the wiring used to connect the various
printed circuit assemblies and DC powered components and the associated test points on
the relay board follow a standard color-coding scheme as defined in Table 11-3.
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Model 100E Instruction Manual
045150102 Rev XB1