It is good safety practice to carry out regular preventative maintenance to
confirm correct operation.
9.1
Output Signal
Check the response of the sensor at pre-determined intervals
by injecting a test gas using a Trolex TX6520.32 Gas Test Kit.
Compare the value of the display with the value marked on the
test gas canister.
9.2
Proof Test
Calibrate the TX6373 using the instructions in Section 8.
Insert an approved test meter into the signal line.
Inject a test gas using a Trolex TX6520.32 Gas Test Kit.
Compare the value on the test meter display with the measured
line value.
If the value on the test meter does not match the value on the display:
Recalibrate and then carry out the proof test again
OR
change the gas sensing module, calibrate and then carry out
the proof test.
9.3
Gas Sensing Modules
The gas sensing modules should be changed at regular intervals
to ensure accuracy of response.
Electrochemical cells contain an electrolyte that is gradually
consumed during use.
The average life is about two years, influenced mostly by duty
cycle, ambient temperatures and humidity. The shifting response of
the cell should be checked at regular intervals.
The modules are conveniently replaceable giving a pre-calibrated
standardised output signal. They can be changed in seconds.
Service replacement modules can be supplied by our Product
Support Department on a regular basis.
Simply insert the new module into the instrument and return the
original for checking and calibration.
INSTALLATION & OPERATING DATA
9 MAINTENANCE
LOCK
Refer to Section
8
Refer to Section
9.2
AIR
CH
4
AIR
CH
4
RELEASE
The sensor will transmit a LOW alarm signal if a
replacement gas sensing module is not fitted
within 15 seconds
17/25
ISSUE N 06/15
