Programming the CDT Control

Changing the Setpoint Temperature

Before a temperature setting can be changed, the controls must be unlocked. See Special Programming.

  1. Press and hold the SET/TEMP button, and the setpoint temperature is displayed.

  2. While pressing the SET/TEMP button, press the UP or DOWN button until the desired setpoint is displayed.

  3. Release the SET/TEMP button to return to operating mode.

Changing the Timers Setting

Before a timer setting can be changed, the controls must be unlocked. See Special Programming.

A timer can also be changed while it is in the countdown mode. This is only in effect for the remainder of that timing cycle. At the end of the timing cycle the timer reverts back to the previous time. To permanently change the timer, program it when the timer display is dim.

  1. Ensure the timer is not running. (Display is dim.)

  2. Press the timer button to be changed and the preset time displays.

  3. While pressing the timer button, press the UP or DOWN buttons until the desired time displays.

  4. Once the desired time displays, release both buttons. The timer reverts back to the last mode of operation.

Timer Operation

When the timer is not running, the timer display is dim. By (Continued) pressing the timer button and starting a timing cycle, the time remaining shows in the full brightness, and the decimal point in the lower right corner blinks.

All timers operate independently of each other and may be started, stopped, or aborted regardless of the status of the other timers. At the end of the timing cycle an alarm sounds, “00” flashes in the timer display, and the decimal point stops blinking. Press the timer to reset.

Timing Through Power Down

If a power interruption, such as brown out, occurs, the control checks the timers and cabinet temperature, once power is restored. If the cabinet temperature drops more than 7ºC (10ºF) the timing cycle ends and the alarm sounds. This informs the operator that this temperature drop may affect the product.

If the cabinet temperature drops less than 7ºC (10ºF), the timers continue timing from the point of the power interruption.