Microprocessor Control
4.3.6TIME
To change the time, press ENTER to select the function, then use the Up or Down arrow key to change the first character, press ENTER to store, then press the Up or Down arrow key to change the second character, press ENTER to store, etc.
NOTE
The clock uses the
4.3.7DATE
To change the date, press ENTER, then use the Up or Down arrow key to change the first character, press ENTER to store, press the Up or Down arrow key to change the second character, etc.
4.3.8SETUP OPERATION
NOTE
None of these setpoints should be changed before consulting an Emerson Network Power representative. Changing any of these setpoints could drastically affect the system.
Selecting Setpoint/Setup from the Main Menu will display the following selections:
Table 14 Setup operation functions default values and allowable ranges.
Menu Item | Function | Default | Range | |
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RESTART | Restart time delay | 0.1 min | 0 to 9.9 min | |
(0 = manual restart) | ||||
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C/F DEGREES | Celsius or Fahrenheit | F | C or F | |
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| |
PUMP START TD | Pump start time delay | 10 sec | 3 - 120 sec | |
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PUMP WAIT TD | Pump wait time delay | 10 sec | 3 - 120 sec | |
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| |
PUMP OFF TD | Pump off time delay | 5 sec | 5 - 120 sec | |
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| |
LEAD PUMP | Lead Pump | Pump 1 | Pump 1 / Pump 2 | |
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DIPSWCH | DIP switch status | NA | NA | |
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| |
VALVE TIME | Control valve travel time | 60 sec | 50 - 250 sec | |
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|
|
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Use the Up and Down arrow keys to scroll through the submenu, then press the ENTER button to access a function. To make changes or review the current setting, see 4.3.1 - Viewing or Changing Settings.
NOTE
Setpoints and system setup parameters are kept in
RESTART TIME DELAY
This function specifies the time for the unit to restart after main power is restored to the unit. If sev- eral systems are operating, the time delays should be set to different values to cause a sequential start. Delay can be set from 0.1 minutes (6 seconds) to 9.9 minutes. Setting the value to “NO!” will prevent the unit from restarting when power is restored. In this case, the unit must be restarted man- ually by pressing the “On/Off” key.
To make changes or review the current setting, see 4.3.1 - Viewing or Changing Settings.
C/F DEGREES
The control can be selected to show readings and setpoints in either degrees Fahrenheit (F) or Celsius (C). To make changes or review the setting, see 4.3.1 - Viewing or Changing Settings.
PUMP START TD
The user may set a pump start time delay (in seconds) to ensure that refrigerant begins flowing when the pump starts. If refrigerant does not begin flowing before this delay expires, the pump will stop for a period that the user may also specify (see PUMP OFF TD). After this delay, the pump will again begin its startup sequence.
To make changes or review the current setting, see 4.3.1 - Viewing or Changing Settings.
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