FLYGT CAS - Channel C Reset Check; Channel D Troubleshooting

10
No
Connect the resistor 680 Ω Contact an ITT Flygt service shop.
or 820 Ω (or a jumper),
between terminals 26 and 27.
Can C-alarm be reset
manually?
Yes
Channel D
Connect an ammeter to
terminals 31 and 32 (NOTE!
Correct polarity ±).Depress
switch 58. The instrument
shall now indicate the set
alarm level (from factory,
set to 100° C (212°F), which
corresponds to 10 mA).
For test of the channel D-alarm
function, the instrument
shall indicate 7 – 14 mA.
Adjust if necessary with
potentiometer 60.
No
Turn off the supply current. Contact an ITT Flygt service shop.
Disconnect the sensor from
terminals 28, 29 (and 30).
Connect a jumper between
29 and 30. Connect a resistor
130 Ω between terminals
28 and 29. Turn the supply
current back on. Does the
instrument indicate about
5.5 mA?
Yes
No
Turn off the supply current. Contact an ITT Flygt service shop.
Substitute a 150 Ω resistor
for the 130 Ω resistor. Turn the
supply current on. Does the
instrument indicate about
16 mA?
Yes
No
Is D-alarm activated and Contact an ITT Flygt service shop.
cannot be reset?
Yes