Casella CEL Apex personal sampling pumps - Manual (Page 11)

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1.2
Display Symbols
Halt - shows when pump is in Hold Mode , or blinks when halt option available.
Run - shows when pump motor is running.
Flow - indicates real flow monitoring is in progress.
Together indicates that the pump is paused but will start again
automatically, for example during TWA (time weighted average) or user prepared programs.
Indicates that all accumulated values displayed can be cleared back to zero (i.e. reset sample
volume and run time).
Resetting the store in this way ends the current sample run.
Warning - indicates flow outside permitted limits or other error
conditions.
This warning will be stored with the associated data on Apex Pro
versions.
Battery condition - The symbol empties as the power is drained and blinks when the output
approaches the minimum operating voltage.
Instrument temperature (user selected units).
Key pad is partially locked, the user can only start or stop the pump.
Key pad is fully locked.
1.3
Indicators & Display Messages
Green LED
Flashes when the pump motor is running.
Red LED Flashes when the pump is unable to maintain the required
flow due to a restriction, or due to some other error.
PROGEnd Displayed when the pump has successfully completed a
programmed run.
BATTFAIL Warning when the voltage from battery pack falls below
the minimum operating level.
SERV dUE Warning after 2500 hours of operation that the instrument
should be serviced.
BUZZEr When activated, sounds warnings and indicates key strokes.
2.
PREPARATION FOR USE
The following steps are required before the instrument can be operated.
Charge the Battery,
Perform a Calibration,
Connect the Sampling Head.
Manual operation is described in Chapter 4.
2.1
Charging the Battery
Three types of battery pack are available: two non-I.S. and one I.S. The battery pack connectors for non-I.S.
and I.S. are not compatible.
Standard 4.8 V, 2.7 Ah nickel-metal hydride pack that is charged in situ. Depending on loading, a fully
charged battery pack can provide up to 20 hours of continuous operation.
Non-rechargeable pack for emergency use only that takes four AA Alkaline dry cells. Depending on
battery type and flow rate, this can give up to approximately 8 hours of continuous operation. This pack
must not be used with I.S. Versions.(See Apex Lite).
I.S. version 4.8 V, 1.7 Ah nickel-metal hydride battery pack that is charged in situ. Depending on loading, a
fully charged pack can provide up to 20 hours of continuous operation.