SKC Limited Universal MTX Pump Operating Instructions - Manual (Page 19)

www.skcltd.com 224-UMTXM Issue F Page 17
Operating the Timer (224-PCMTX8 Only)
Example: 8 hours running over a period of 24 hours
1. Switch on the pump and enter SET-UP mode. A DELAYED START time can be entered if required.
2. Press the MODE key to cycle to the SAMPLE PERIOD setting and enter 1440 minutes (24 hours) using the
DIGIT SELECT and DIGIT SET keys.
3. Press the MODE key to cycle to the PUMP PERIOD setting and enter 480 minutes (8 hours) using the
DIGIT SELECT and DIGIT SET keys.
4. The pump is now set for intermittent sampling, for a total of 8 hours over a period of 24 hours. To start
the intermittent sample run press the START/HOLD key. The pump automatically calculates the required
on/off timing strategy to apportion the PUMP PERIOD time over the SAMPLE PERIOD time. The pump will
start and the legend SAMPLE RUNNING will be indicated in the top right of the LCD screen and the legend
PUMP PERIOD will flash in the bottom right of the screen. The timer display will increment showing the
total elapsed time. To view the actual elapsed pump running time press and hold the DIGIT SET / PUMP
RUN TIME key. The display will return to the total elapsed time when the key is released.
5. At the end of the intermittent sample run the display will show the legends HOLD and SAMPLE OVER, and
the total elapsed time. Press and hold the DIGIT SET / PUMP RUN TIME key to view the elapsed pump
run time.
Setting a Repeat Run
To repeat a timed run at another time DO NOT switch the pump off using the on/off switch. Leave the pump
switched on with the LCD screen active. To re-run the program press the SET-UP key and then the START/
HOLD key. The pump will now repeat the timed run from the start.
To quickly clear a timed run from the pump’s memory switch the pump off and on using the ON/OFF switch.
Note: The battery pack can be safely charged when the pump is left switched on.