Labconco Biological Safety Cabinets 30268 Series - Manual (Page 41)

Chapter 5: Using The Cabinet
Product Service 1-800-522-7658 35
Original instructions
Timer Operation
NOTE: The timer button allows activation of an interval (countdown) or
stopwatch (elapsed) timer. The timers cannot be operated
simultaneously.
To access the main timer menu, press the
Timer button anytime during
normal operation. The main timer menu is shown on the LCD display. Use
the
▲ and ▼ buttons to highlight the Interval or Stopwatch Timer. Press the
OK button to select the highlighted timer function.
Interval Timer Operation
1. When selected, the Interval Timer menu is displayed on the LCD.
The timer defaults to 0:00:00 (hours:minutes:seconds).
2. Press and hold the ▲ or ▼ buttons to increase or decrease the timer
interval.
3. When the proper interval is entered on the display, press the OK
button to start the timer.
4. When the timer reaches 0:00:00, an audible alarm will sound, and the
timer will reset itself and repeat the countdown.
5. Press the OK button to pause the timer.
6. Press the Menu button to clear the interval timer and return to the
main timer menu.
Stopwatch Timer Operation
1. When selected, the Stopwatch Timer menu is displayed on the LCD.
The timer defaults to 0:00:00.
2. Press the OK button to start the timer.
3. Press the OK button again to zero the timer.
4. Press the Menu button to clear the stopwatch timer and return to the
main timer menu.
If An Airflow Alert Activates
The most common causes of an Airflow Alert are:
• Blockage of the inlet grilles or exhaust outlet.
• Removal of the work surface or grille during operation.
Resetting the Airflow Alert System
The Airflow Alert automatically resets to normal operation once the motor
speed has stabilized.