19
On completion of the warm-up, the monitor
will enter Auto zero mode and begin normal
operation.
If during the startup, a fault condition is
detected, follow the instructions on the
screen, and refer to the trouble-shooting
section of this manual.
Normal Operation
During normal operation, the monitor will
display one of two basic screens. First, it
will measure the fresh air reference and
display the Auto Zero screen. Then it will
measure the sample air and display the
Auto Sample screen.
The Auto Zero measurement will take
approximately 25 seconds, and will be
performed approximately every 3 minutes.
If the monitor senses refrigerant in the
sample air, it will lengthen the Auto Zero
time to approximately 45 seconds.
The Auto Sample measurement will be
taken for between 1 minute and 3 minutes,
depending on the tube length programmed
into the monitor. This screen will display
the ppm reading, the time of day and the
refrigerant programmed for the sample
area.
Initial Programming
Once the IR-SNIF-MCD has completed
warm-up, and entered Auto Zero, it can be
programmed. While in Auto Zero or Auto
Sample modes, press the “ENT” key to
access the main menu.
Key selections 1, 2 and 3 are used to
display current alarms, manually initiate
Auto Zero and enter the Manual Override
mode. These functions are discussed in
Appendix A of manual.
To program the monitor, press the “4” key
to enter Setup. The monitor will require a
password to access the setup screens.
There are five setup passwords: 111, 222,
333, 444, 999. The first four passwords
can be changed to user-defined codes.
999 cannot be changed.
If an incorrect password is entered, the
fourth line of the screen will change to
“Access Denied” and the monitor will return
to normal operation.
** Auto Zero**
Timer 24 12:00
Auto Sample AREA 1
PPM 0 12:00
R-134A
1)…Status
2)…Rezero
3)…Manual
* SenTech Monitor *
ENTER PASSWORD
Followed By ENT
* SenTech Monitor *
ENTER PASSWORD
Followed By ENT
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