16
GENERAL MAINTENANCE
PRE TEST CHECKLIST
SETTING INLET TEMPERATURE
ANALYZER CONNECTIONS
EMPTYING & CLEANING THE IN-LINE WATER TRAP
CHANGING THE PARTICLE FILTER
• Re-certify your instrument annually to ensure it meets original performance specifications
• Keep your instrument dry . If it gets wet, wipe dry immediately . Liquids can degrade electronic circuits
• Whenever practical, keep the instrument away from dust and dirt that can cause premature wear
• Although your instrument is built to withstand the rigors of daily use, it can be damaged by severe impacts . Use reasonable caution
when using and storing the meter
• Turn on and zero the analyzer without the flue probe connected to use ambient temperature
• Connect flue probe thermocouple to T1 during zero countdown to store probe tip temperature as inlet (ducted system)
• Connect a thermocouple to T2 to measure inlet during test .
The in-line water trap should be checked and emptied on a regular basis . Water vapor will condense in
the probe line, which may cause the water trap to fill suddenly if the probe is moved . Care should be
taken at all times .
Carefully remove the rubber plug from the bottom of the water-trap housing . Dispose of the condensate
in a suitable drain, care must be taken as it could be acidic . If condensate spills onto the skin or clothing,
clean off immediately using fresh water, seek medical advice if problems occur . Ensure plug is replaced
before performing combustion tests . Note: O2 reading will be high if the Water Trap Plug is not in place .
This is a very important part of the analyzer and should be changed regularly . It prevents dust and dirt
particles from entering the pump and sensors that will cause damage . The filter MUST be changed when
it appears discolored on the inner surface .
Remove water-trap assembly from the analyzer as shown above . Remove the filter and plastic holder
from the housing . Discard the filter element but keep the holder to fit to the new filter . Clean the inside
of the filter housing with a suitable soft cloth . Fit the holder onto the new filter element and then insert
into the housing . Refit the housing onto the analyzer .
• Clean particle filter
• Water trap and probe line are empty of water
• Power on and zero
• All hose and thermocouple connections are properly secured
• Flue gas probe is sampling ambient FRESH air
• Water trap is fitted correctly to the instrument
• Flue temperature plug is connected
WARNING!
Turning the pump off while the probe is in the flue will leave toxic gases inside
the analyzer . Once data has been printed or copied it is advisable to purge the
unit with fresh air as soon as possible . To do this remove the probe from the flue
and turn ON the pump . Always allow the readings to return to zero (20 .9 for O2)
prior to shutting the unit off . The meter will not switch off until the CO reading is
below 20 ppm .
WARNING!
The probe will be hot from flue gases . Remove the probe from the flue and allow
it to cool naturally . Do not immerse the probe in water, as this will be drawn into
the analyzer and damage the pump and sensors . Once the probe is removed from
the flue and the readings have returned to ambient levels hold down “On/Off”
and switch off the analyzer . The instrument will count down from 30 to switch
off . If you pressed “On/Off“ by mistake, pressing “Send“ will return you to normal
operation .
NOTE: Take care when inserting
the temperature probes as the
pins are polarized . Insert with the
smaller pin (+) to the right .
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