Teledyne 6200E - Sulfides Analyzer - Manual (Page 253)

Model 6200E Instruction Manual TROUBLESHOOTING & REPAIR
M6200E Rev: A1 253
pneumatic paths, most likely critical flow orifices or sintered filters. To perform a sample flow
check:
1. Disconnect the sample inlet tubing from the rear panel SAMPLE port shown in Figure 3-2.
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.
3. 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).
4. Low flows indicate blockage somewhere in the pneumatic pathway.
11.5.3. AC Power Configuration
The M6200E 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 11-4.
Table 11-4: DC Power Test Point and Wiring Color Code
NAME TEST POINT# COLOR DEFINITION
DGND 1 Black Digital ground
+5V 2 Red
AGND 3 Green Analog ground
+15V 4 Blue
-15V 5 Yellow
+12V 6 Purple
+12R 7 Orange 12 V return (ground) line