Liebert XDC user manual Setup Operation, Restart, Degrees, Pump Start TD, Pump Wait TD

Microprocessor Control

5.3.8SETUP OPERATION

NOTE

None of these setpoints should be changed before consulting a Liebert representative. Changing any of these setpoints could drastically affect the system.

Selecting Setpoint/Setup from the Main Menu will display the following selections:

Table 22 Setup operation functions default values and allowable ranges.

Menu Item	Function	Default	Range
RESTART	Restart time delay	0.1 min	0 to 9.9 min
			(0 = manual restart)
C/F DEGREES	Celsius or Fahrenheit	F	C or F
PUMP START TD	Pump start time delay	10 sec	3 - 120 sec
PUMP WAIT TD	Pump wait time delay	10 sec	3 - 120 sec
PUMP OFF TD	Pump off time delay	5 sec	5 - 120 sec
LEAD PUMP	Lead Pump	Pump 1	Pump 1/Pump 2
DIPSWCH	DIP switch status	NA	NA

To view the SETUP OPERATION menu

1.Press the MENU key.

2.Use the up and down arrow keys to move to the SETUP OPERATIONS menu.

3.Press the ENTER key to enter into the menu.

4.Use the up and down arrow keys to move through the menu and view the setpoints.

5.Press the ENTER key to change a setpoint. (The control will ask for a service password if passwords are enabled. Use the up and down arrow keys and ENTER key to enter the three-digit password when prompted.)

6.Use the up and down arrow keys to change the setpoint.

7.Press ENTER to accept the new setpoint.

8.When finished, press the ESC key two to three times to return to the main display.

NOTE

Setpoints and system setup parameters are kept in non-volatile memory.

RESTART

This is the time delay after which the control will attempt to restart the Liebert XDC after a loss of power. It is programmable from 0.1-9.9 minutes in 6-second (0.1 minute) increments. The user can also select NO. If NO is selected, the system WILL NOT automatically restart. The default is 0.1 min- utes.

C/F DEGREES

The user may select control and alarm parameters in either Celsius or Fahrenheit. The default is degrees Fahrenheit.

PUMP START TD

The user may set a Pump Start Time Delay to ensure that refrigerant begins flowing when the pump starts. If refrigerant does not begin flowing before the user-set delay expires, the pump will be turned off (see PUMP OFF TD).

PUMP WAIT TD

The user may set the pump wait time delay to prevent the pump from continuing to run when refrig- erant is not flowing. If a pump is running normally and refrigerant flow is lost, the pump will stay on for the specified amount of time trying to re-establish refrigerant flow. If refrigerant flow resumes during the specified interval, the pump will continue operating. If the wait time expires and refriger- ant flow has not resumed, the pump will shut down (see PUMP OFF TD).

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