Ametek 900

5-64 | Model 900 ADA / Model 930 Sulfur Pit Analyzers
HS Code HStatus Alarm Type Condition / Description and Suggested Corrective Action
32 6 Fault f Temp High
One or more of the temperature zones has exceeded its over-
temperature limit of 177 °C/350 °F.
When the analyzer detects this alarm, it will automatically switch to
Backpurge mode and also de-energize the over-temperature relay
for the zone that has exceeded its limit. This cuts power to the cor-
responding heater.
The alarm must be manually reset by pressing the Over-Temp
switch (SW300) on the Termination board (Figure 5-13). This also
re-energizes the over-temperature relay, which restores power to
the corresponding heater.
Corrective Action:
• From the User Interface:
- Check the current temperature (Show MAI screen) for each
temperature zone and compare it to its Set Point temperature
(TStPt screen).
- Check each of the associated conguration parameters for
temperature control. These parameters may have been lost as
a result of a power interruption or a power spike.
• Take appropriate safety precautions, open the Electronics Enclo-
sure, and:
- Check the green LED for each circuit, located on the Termina-
tion board (S/L = LED302; V/L = LED301; Oven = LED300) to
verify which zone is experiencing problems.
- Press SW300 on the Termination board to re-energize the
tripped circuits.
- Check the fuse for the Over-Temp circuit.
• Other checks/corrective action:
- Check the electrical connections between the heater and the
Sample Line, Vent Line, and Analyzer Oven. Check for proper
connections and damage to the wiring.
See Figures 5-12.1 and 5-12.2 for Sample and Vent Line over-
temperature wiring details.
- Using an Ohm Meter, measure the resistance of the tempera-
ture sensor (RTD) for the zone which caused the alarm (view
the TType screen to determine sensor type). Test it for an
open circuit. If the RTD is faulty, contact AMETEK for as-
sistance.
- Replace the Temperature Sensor (RTD) Daughter board(s).
Contact AMETEK to verify operation before removing this
board.
- Replace the Termination board. Contact AMETEK to verify
operation before removing this board.
(Show MAI)
RUNF6 81..8
(TStPt) RUNF4 01..4
See Fuse Legend
inside Electronics Enclosure
door.
(TType)
RUNF4 41..4