ENGLISH
Pag. 34
It’s strictly forbidden open and close the equipment when it’s installed in hazardous area
and it’s powered-on. This operation can be conducted in safe zone and without power sour-
ce. After 10 minutes from power source interruption, the equipment can be opened.
It’s strictly recommended the use of personal protective equipment during operations insi-
de the enclosure.
In case of tapered thread, use a thread-lock glue (Loctite 243 for example) on 2-3 threads.
7.5 Cleaning
The detectors must be kept clean of dust deposits, in particular when the equipment has
a varnished aluminum enclosure. Cleaning must be performed with damp cloths or with
cloths that do not accumulate electrostatic charges. It’s strictly forbidden the dust cleaning
using compressed.
Gas detectors must be cleaned in order to avoid any risk of infection
7.6 Data reset to default parameters
Procedure for a detector with RS485 interface on board
³ Disconnect the power supply of the detector and move the DIP switch No. 8 to OFF.
³ Connect the detector
³ While the detector is connected, move the DIP switch No. 8 back to ON again.
Procedure for a detector without RS485 interface on board
³ Disconnect the power supply of the detector and move the DIP switch No. 1 to OFF.
³ Connect the detector
³ While the detector is connected, move the DIP switch No. 1 back to ON again.
7.7 Disassembly instructions
Power the unit o, disconnect the wires on the terminals and dismount the housing from
any blocking systems.
7.8 Trouble shooting guide
The following table lists all error messages, which can be viewed on the detector or calibra-
tion keyboard display, with corrective actions to resolve them.
Table 7) Error messages with their corrective actions
Visualised mes-
sage
Possible cause Corrective action
Three horizon-
tal lines
There was a drift of the detector
Zero value
Make sure you are in clean air and ple-
ase adjust the Zero by the calibration
procedure
EE2P The internal memory E2Prom is
not working
Please perform the reset procedure by
the 459 tech password
WARNING!
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