5-28 | IPS-4 Dual Bench (UV / IR) Analyzer
Condition/Alarm Name Description and Suggested Corrective Action
Corrective Action (continued):
• Take appropriate safety precautions, open the Electronics Enclosure
door, and:
- Check the fuse(s) for the zone(s) which caused the alarm (i.e.,
Bench Heater or Oven Heater, if used). Refer to the Fuse Legend
at the back of the Electronics Enclosure for the locations of these
fuses.
• Other checks/corrective action:
- Using an Ohm Meter, measure the resistance of the associated
RTD (Cell, Bench, or Oven) and test it for an open circuit. If the
RTD is faulty, contact AMETEK for assistance.
- Check the electrical connections between the heater and the Relay
board. Check for proper connections and damage to the wiring.
- Replace the Relay board. Contact AMETEK for assistance.
- Replace the Customer Connection board. Contact AMETEK for
assistance.
For alarms caused by High temperatures only:
• If the Oven Heater temperature-controlled zone has exceeded its
over-temperature limit of 177 °C/350 °F, the analyzer automatically
switches to Zero Gas Flush mode.
Take appropriate safety precautions, open the Electronics Enclosure
door, and:
- Manually reset the alarm by pressing the OT (Over-Temperature)
Reset Switch, S501, on the Relay board (see Figure 5-4) to re-
energize the tripped Oven Heater circuit.
- Check the LEDs for the Oven Heater Over-Temp circuit (D502 on
the Relay board) to check if it is experiencing problems.
- Check the fuse for the Over-Temperature circuit (F3, located at TB1
13). Refer to the Fuse Legend for the locations of these fuses.
Pressure transducer 1
Pressure transducer 2 These alarm conditions indicate that the concentration of the output
exceeds its full-scale range by more than 10 psia (typical; set point and
pressure unit may vary).
Corrective Action:
• The parameters have exceeded the normal operating range. From the
User Interface Panel, check that the full-scale range is correct for the
current sample. If Pressure Transducer alarms persist during normal
operation, contact the factory. A range change and recalibration may
be required.
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