Casella CEL Vortex personal sampling pumps - Manual (Page 5)

2.1 Battery
A rechargeable nickel-cadmium battery provides, typically in excess, of 8
hours continuous operation. The battery charging socket is located on the
side of the pump. Using the standard charger, the battery will be fully
charged in 14 hours.
To ensure maximum cycle life expectancy of the battery pack, it is recom-
mended that the battery is not left in a fully discharged condition for
extended periods of time. Excessive over charging should also be avoided.
2.2 Battery Low Shut Down
A battery low cut-off facility will turn the pump off once the internal battery
pack becomes fully discharged. This will prevent “deep discharge” damage
and ensures maximum life of the battery pack. Should the pump be switched
on with a discharged battery, battery-low warning “bleeps” will be given prior
to the pump shutting itself down.
2.3 Switching the Pump ON and OFF
To switch the pump ON, press the “FLOW” and “RESET” keys at the same
time. The buzzer will bleep twice and the green LED will switch on, indicating
“PUMP ON”.
To switch the pump OFF, press the “FLOW” and “RESET” keys at the same
time.
2.4 Indicator LEDs
There are two light emitting diodes (LEDs) located on the front panel of the
instrument.
PUMP ON
Green indicator: used to indicate that the pump is switched ON and is
running. The LED flashes when in flow adjustment mode.
BATTERY LIMIT
Red indicator: used to identify one of two potential error conditions.
Battery Low Warning
When the battery approaches a discharged condition, the red
“BATTERY/LIMIT” LED flashes slowly and the audible alarm sounds.
Sampling should be terminated and the battery recharged.
Operation
Page 5 of 16
VORTEX Standard 2 & VORTEX Timer 2
PERSONAL SAMPLING PUMPS Handbook