ANATEL A643, Operator'S Manual, Page: 184 / 222

184 of 220 Troubleshooting - Anatel A643a
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Operator Manual
Anatel
14.4.2 Cell Tests
These tests facilitate manual control of the Anatel A643a’s ultraviolet lamp, as well as its
sample valves and pump and calibration resistor. Diagnostics testing interrupts the current
TOC analysis; normal analysis resumes upon termination of the test.
To check the status of these two components:
1) With the Analyzer’s Diagnostics Menu displayed, specify Cell and press Enter to
access its options. The Cell Menu offers three options:
2) Use the Up and Down Keys to specify the desired diagnostic selection.
CAUTION:
Make sure that the sample vessel is securely installed before initiating the Valves/Pump test.
3) Press Enter to select the component’s state. For the Valves/Pump test, the states of
the three solenoid valves and pump are shown. There are four possible test settings:
• On-line Flowing
• Off-line Flowing
• On-line No Flow
• Off-line No Flow
Note:
Solenoid Valve 3 (SV3) and the pump are controlled by the same output and, therefore, share
the same state.
Lamp Test Sets the UV lamp to “On” or “Off.”
Valves/Pump Cycles through the four control states for the three solenoid valves
and the internal pump.
Cal Resistor Displays the inserted external calibration resistor’s value.
Fig 14-5 : Cell Diagnostics Screen
1 SENSOR NAME
SV1 SV2 SV3/Pump:
ON OFF OFF
On-line no flow
Fig 14-6 : Diagnostics Menu