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14.1 Transmitter Maintenance
The 1732 transmitter has several hardware checking systems that confirm the correct operation of the
transmitter and raise an alarm if there is a fault detected. Because of this system, the transmitter only
requires periodic maintenance. Novatech recommends an annual check of the transmitter.
The annual check should include the following items –
1. Measure and record the reference voltages, and check that the correct voltages are set in the
calibration menu
2. Check that the reference air flow from the port on the bottom of the transmitter case is between 100
and 300cc/m
3. Check for contamination and potential blockage of the reference air filter that is mounted on the
bottom of the transmitter case
4. If an external burner interlock has been connected (terminals 10 & 11), check that if one of the wires
is disconnected the probe heater is disabled (1231 probes only)
5. Check the integrity of the cable. Particularly check the main power supply cable and the probe cable
for any damage.
6. Check the integrity of the earth connections in the transmitter
14.2 Cleaning
The 1732 transmitter is made in an IP65 / IP54 rated diecast case. It is painted with a tough ripple finish
power coating to maintain a clean look. However, if it is necessary to clean the case use either a warm
soapy water solution or an isopropyl alcohol.
A build-up of dust on or around the transmitter should be removed before the cabinet door is opened.
If there is a build-up of dust inside the cabinet check the door O-ring seal for damage and replace it if
necessary.
Take care when wiping the display window to avoid scratching the surface.
If the filters of the probe (if fitted) become blocked, use an ultrasonic cleaner with a few drops of household
detergent. If the filters cannot be cleaned this way replace the sintered filters.
The filter in the base of the analyser may become blocked if the analyser is operating in a dusty environment.
It is available as a field replacement item.
14.3 Replacement parts
The following list identifies field replaceable parts –
Stock number
Description
18020
1730-1 Main PCB
18021
1730-2 Display PCB
15039
MP-24E Reference air pump
14105
Fuse - M205 3.15A 250V fuse (pack of 5)
14093
Instruction manual
18064
EEROM 173x firmware
11040
FIL-230 Titanium sintered filter, 30um
11041
FIL-215 Titanium sintered filter, 15um
Filter – analyser bulkhead
14123
August 2018
1732 Oxygen Transmitter
14. M
AINTENANCE
Technical Manual
63
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