User guide

Probe Configuration
Operating Instructions
Before Use Each Time
• The particle filter is not dirty
• The water trap and probe line are empty of water
• All hose and thermocouple connections are properly made
• The flue gas probe is sampling ambient FRESH air
• The water trap is fitted correctly to the instrument
• The flue temperature plug is connected
• The inlet temperature probe is connected if required
Switch ON the instrument by pressing “ “.
After switch-on, the analyzer will scroll through the following
information while performing a zero countdown:
• Currently Set Date
• Currently Set Time
• Remaining Battery Level
• Fuel Selected
• Model and Analyzer Firmware Level
NOTE: The count begins at 59 seconds, and will display the
parameter selected with the rotary knob when the sensors are
detected as stable. If the analyzer will not auto-zero, the sensors are
in need of replacement and the unit should be returned to the
authorized service center.
C O / C O 2 : The CO / CO2 ratio is the ratio of measured CO divided
by calculated CO 2 .
It gives an indication of:
• H o w good a gas sample the instrument is reading
• H o w clean the boiler is running
For example: A new or clean domestic boiler will display a ratio of less
than 0.004, a unit in need of cleaning 0.004 - 0.008 and a unit in need
of major overhaul will show greater than 0.008.
This only shows a reading when a combustion test is being carried out.
“- - - - ” is displayed while in fresh air.
: Displays the approximate battery level as follow s :
• Full battery level
• B a t t e ry a t 75 %
• B a t t e ry a t 50 %
• B a t t e ry a t 25 %
When the display flashes this, it indicates the batteries are at less than
10% of charge and should be replaced, readings may be affected if the
analyzer is used with low power batteries.
DATE : Date shown as day, month and year. The order can be
changed using the menu function. Date is stored with a
combustion test.
TIME : The time is shown in hours and minutes, these details are
stored with each combustion test.
NOT E : When changing the batteries on the instrument the
memory will store the date and time for up to one minute,
if outside this time it may be necessary to re-enter the details.
C50/C75-MAN P. 2