Additional Compressor Alarms; Refrigerant Low Pressure Alarm; Economizer; Economizer Components - Bard FUSION-TEC WR36BPA Service Instructions Manual

5. Press ENTER key to scroll to Comp. Limit (see
Figure 45).
6. Press UP or DOWN keys to change ON or OFF
value.
7. Press ENTER key to save value and move the
cursor to Cutoff Temp.
8. Press UP or DOWN keys to adjust temperature.
9. Press ENTER key to save value.
10. Press ESCAPE key several times to return to Main
Menu screen.
FIGURE 45
Adjusting Compressor Low Temp Limit

Additional Compressor Alarms

Refrigerant Low Pressure Alarm

When the suction pressure transducer indicates a
pressure value below the low pressure alarm setpoint of
40 PSI and the compressor has been running for more
than 180 seconds, or the suction pressure is pulled
into a vacuum for more than 20 seconds, the controller
will disable the compressor. NOTE: The second call
will be delayed based on the delay off value mentioned
in the compressor section. The controller will try to
run the refrigeration system two (2) times within
3600 seconds (1 hour) before the alarm will lock the
compressor out. This alarm needs to be manually
cleared before compressor operation will resume.
To adjust the low pressure alarm settings:
1. Press MENU key to go to the Main Menu screen.
2. Press UP or DOWN keys and ENTER key to enter
USER password 2000.
3. Press UP or DOWN keys to scroll to System Config;
press ENTER key.
4. Press UP or DOWN keys to scroll to Alarm Setup
A6.
5. Press ENTER key to scroll to Delay to adjust how
long the compressor waits before turning the
compressor off (see Figure 46).
6. Press UP or DOWN keys to adjust the time delay.
7. Press ENTER key to scroll to Two Count Delay.
8. Press UP or DOWN keys to adjust the delay value.
9. Press ENTER key to save.
10. Press the ESCAPE key several times to return to
Main Menu screen.
FIGURE 46
Adjusting Low Pressure Alarm Settings

Economizer

Economizer Components

Actuator

The actuator rotates up to 90° based on a 2-10v signal
sent to it by the controller. The actuator is rated at
90 in-lb and is spring return when power is lost. This
component is what opens and closes the damper blade.
To verify the output from the controller to the actuator:
1. Press MENU key to go to the Main Menu screen.
2. Press UP or DOWN keys and ENTER key to enter
TECHNICIAN password 1313.
3. Press UP or DOWN keys to scroll to I/O Config;
press ENTER key.
4. Press UP or DOWN keys to scroll to Damper Output
C13.
5. Reference the Damper Position for the current
output to the damper (see Figure 47).
FIGURE 47
Damper Output and Override
6. To override the current position, press ENTER key
to scroll to OV Pos.
7. Press UP or DOWN keys to change the value to the
desired output.
Manual 2100-695
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