15
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-1,2,3
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
Press ENT for Menu
Auto Sample AREA 1
PPM 0 12:00
R-134A
Press ENT for Menu
1)…Alarms
2)…Rezero
3)…Manual
4)…Setup ABORT
* SenTech Monitor *
ENTER PASSWORD
Followed By ENT
Code : 0
* SenTech Monitor *
ENTER PASSWORD
Followed By ENT
ACCESS DENIED
Summary of Contents for IR-SNIF-1
Page 50: ...47 05 20 2008 ...
