Fluid Components International FLT93 Nuclear - Manual (Page 30)

OPERATION FLT ® Series FlexSwitch TM
30 Fluid Components International LLC
Detecting Increasing Temperature (high temperature alarm)
1. Slide the mode switch to the CALIBRATE position.
2. Adjust the calibrate potentiometer (R24) until the voltmeter equals the desired temperature signal in Table 3-7.
3. For the appropriate alarm, determine whether the status LED is on or off (red for No. 1 or green for No. 2).
If the LED is off, turn the set point adjustment potentiometer (R26 for alarm No. 1 or R25 for alarm No. 2) slowly clockwise just until the
LED turns on.
OR
If the LED is on, turn the set point adjustment potentiometer (R26 for alarm No. 1 or R25 for alarm No. 2) counterclockwise until the LED
turns off and then slowly clockwise just until the LED turns on.
If this is the only temperature application alarm to be setup, then skip to the Continue With the Temperature Application procedure.
Detecting Decreasing Temperature (low temperature alarm)
1. Slide the mode switch to the CALIBRATE position.
2. Adjust the calibrate potentiometer (R24) until the voltmeter equals the normal temperature signal.
3. For the appropriate alarm, determine whether the status LED is on or off (red for No. 1 or green for No. 2).
If the LED is on, turn the set point adjustment potentiometer (R26 for alarm No. 1 or R25 for alarm No. 2) slowly counterclockwise just
until the LED turns off.
OR
If the LED is off, turn the set point adjustment potentiometer (R26 for alarm No. 1 or R25 for alarm No. 2) clockwise until the LED turns on
and then slowly counterclockwise just until the LED turns off.
Continue With the Temperature Applications
1. Slide the mode switch to the RUN position.
2. Establish the normal process temperature condition. For the high temperature alarm setups, the status LED should be off at normal
temperatures. For the low temperature alarm setups, the status LED should be on at normal temperatures.
3. Establish the process alarm condition and monitor the voltmeter display.
4. When the output signal passes through the set point value, the status LED should turn on for high temperature alarms, off for low tem-
perature alarms, and the relay contacts should change state.
5. Reestablish the normal process temperature condition. The LED and relay contacts should reset.
6. Disconnect the voltmeter from P1.
7. Replace the enclosure cover.
Note: The relay default confi guration is for the relay coil to be de-energized when the temperature signal is greater than the set
point value. (i.e., Assume that the normal process temperature condition has been established. In this state, the relay coil
will be energized.)