Polytron Remote Sensor Transmitter Faults; Maintenance; Disposal Of Electrical And Electronic Equipment - Dräger Regard 3900 Instructions For Use Manual

Symptom
Dräger Regard 3900 Configuration Software faults
Unable to transfer configuration to or
from the controller
Calibration failure message on screen
7.1

Polytron remote sensor transmitter faults

Polytron warning signal
The Polytron transmitter warning signal (3 mA for 1s every 10s) will trip the Fault (F1) relay on the input module if the trip level is
set above 2.9 mA. If the fault relay is non-latching, the relay will change state momentarily every 10s in time with warning signal.
Because the duration of the 3 mA signal is short, it may not trip the relay every time. If this occurs, refer to the remote sensor
transmitter operating manual.
Polytron maintenance signal
The maintenance signal on older Polytron transmitters (3~5 mA at 1 Hz) will trip the Fault (F1) relay on the input module if the
trip level is set above 2.9 mA. If the fault relay is non-latching, the fault relay will toggle. If this occurs, refer to the remote sensor
transmitter operating manual.
8

Maintenance

Observe EN 60079-29-2 and any relevant national regulations in the country of use.
There are no specific maintenance tasks for the Regard 3900 controller. Carry out any maintenance or calibration tasks in line
with the instructions and frequency described in the remote sensor transmitter operating manual.
NOTICE
i i
During maintenance the inhibit switch on the display board can be used to hold the controller relays in their current state,
and thereby prevent activation of the gas-level warnings. See Section 4.2.1 on Page 10 for the inhibit switch operating
instructions.
9

Disposal of electrical and electronic equipment

EU-wide regulations for the disposal of electrical and electronic equipment, which have been defined
in the EU Directive 2002/96/EC and in national laws, are effective from August 2005 and apply to this
device. Common household appliances can be disposed of using special collecting and recycling facilities.
However, as this device has not been registered for household usage it must not be disposed of through
these means. The device can be returned to your national Dräger Safety Sales Organization for disposal.
Please do not hesitate to contact Dräger if you have any further questions about this issue.
Regard 3900 Series
Fault
No supply to controller
Interface unit (RS-232) fault
Remote sensor transmitter fault
Troubleshooting
Remedy
Check and repair the external supply
and wiring
Check and repair/replace the interface
unit
Check and repair the transmitter wiring
and recalibrate
27