Liebert 3000 Manual Do Utilizador

Operation with Advanced Microprocessor Controls

2.4.4 Run Hours Log

The total operating hours of all major components in the unit can be monitored from the display and

are retained in nonvolatile memory. Run times are available for the following:

• Compressor
• GLYCOOL Coil (or CW Coil as used on Dual Cooling Unit)
• Fan
• (HUM) humidifier
• (RH1) reheat 1 (or Hot Water or SCR Reheat)
• (RH2) reheat 2

The component run hours for each individual component can be reset by selecting the run hours dis-

play screen for the desired component, then pressing ENTER within 5 minutes of applying power to

the control. The user will then be prompted to press ENTER to clear the selected component's run

hours.

2.4.5 Analog Sensors

The four (4) analog sensor inputs can be monitored from the display. The inputs are filtered, then dis-

played along with the text label assigned during setup. See Analog Setup on page 11.

2.5

Setpoints/Setup

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

• View setpoints
• Setup system
• Run diagnostics
• Change passwords

2.5.1 View Setpoints

Control and alarm setpoints can be reviewed and/or changed through the display. The following table

lists the default setpoints and their allowable ranges.

NOTE
Run hours for a component should be reset ONLY when the component has been replaced.

NOTE
Setpoints and system setup parameters are kept in nonvolatile memory.

Table 1

Default setpoints and ranges

Setpoint

Default

Range

Temperature Setpoint

40 to 90

F (5 to 32

Temperature Sensitivity

2.0

1 to 9.9

F (0.6 to 5.6

Humidity Setpoint

50%

20 to 80% RH

Humidity Sensitivity

1 to 30% RH

High Temperature Alarm

35 to 95

F (2 to 35

Low Temperature Alarm

35 to 95

F (2 to 35

High Humidity Alarm

60%

15 to 85% RH

Low Humidity Alarm

40%

15 to 85% RH