12
13
4.
OPERATING INSTRUCTIONS
4.1 TURN ON
After charging the instrument, or installing fresh alkaline batteries, turn instrument on in
clean air, by depressing the ON/OFF button until a confirming beep is heard. Release
the ON/OFF button and instrument will display the firmware version number and “ON”
before cycling through its turn-on sequence (See Figure 3 Default Turn-on Sequence).
Then the instrument goes through “TESTING” and “ZEROING” cycles, displays low alarm
levels and high alarm levels, indicates “READY” and goes into normal operating mode.
In normal operating mode, gas types and levels occupy the top two lines, the third line is
blank and available for messaging, while on the fourth line is the letter “P” or “D”, for
pump or diffusion mode of operation respectively, the current time in 24-hour format and
the battery gauge. If alkaline batteries power instrument, battery condition is indicated by
display of battery voltage. With alkaline batteries, voltage should be about 5.8 volts with
fresh batteries, with low battery warning occurring at between 4.0 and 4.2 volts,
depending on sensor configuration.
4.2 STANDARD MODE SEQUENCE
4.
OPERATING INSTRUCTIONS
Each standard mode option is available by depressing the MODE button sequentially.
PEAK READING. The highest toxic and combustible gas levels and the lowest oxygen
levels. Depressing the ON/OFF button while in this mode clears peak values.
USER SETUP. User setup mode allows for calibration (See Section 5 Calibration) and
clearing memory (See Section 4.7 Clearing Memory). To enter user setup mode, keep
depressing the MODE button until line 3 of display indicates "USER SETUP". Press the
ON/OFF button to enter user setup mode, to bypass each setting depress the MODE
button. To change any setting, depress the ON/OFF button. For example, to enter
calibration mode, depress the ON/OFF button when "CALIBRATE?" is displayed (See
Section 5 Calibration).
4.3 TESTING SENSORS AND ALARM
It is recommended that proper alarm function be verified prior to use by applying calibration
or alarm check gas. Alarm check gas (Test-1A) should be used only for instruments that
contain one or more of the 4 standard sensors (O2, LEL, CO or H2S). For other
configurations, use calibration gas with instrument in normal operating mode. After testing,
remember to clear the peak values, or if “ALARM TYPE” is set to “TWA ON”, clear memory.
Test low flow alarm by placing finger over inlet when in pump mode. If instrument does not
go into low flow alarm when inlet is blocked, instrument should be operated in diffusion
mode after entering the “USER SETUP” mode and changing the pump status configuration
to “PUMP OFF”. Instrument should be serviced as soon as possible to fix the problem.
Instructions for using alarm check gas (Part number Test-1A)
1)
Turn monitor on in fresh air and allow it to go into normal operating mode.
2)
Break shipping tab off canister.
3)
Attach blue balloon on to black disk on alarm check gas hose. (See Figure 5)
4)
Insert red end of hose into hole in canister nozzle.
5)
Pinch hose (or place finger over the end of the hose) and pulse trigger so that gas fills
the balloon to its natural shape. Do not over-inflate balloon.
6)
Insert other end of hose into air intake.
7)
All channels should be in alarm for a few seconds while gas passes over sensors.
Check display to confirm proper operation of visual alarms for each gas. Confirm
proper operation of audible alarms.
M U L T I G A S D E T E C T I O N
OX
LEL
CO
H2S
20.1
0
16
9
PEAK READING
LEL
CO
H2S
USER SETUP
NO
OX
LEL
CO
H2S
20.9
0
0
0
P08:49
Figure 4
Default Standard Mode Sequence
B
