Installation & Operation Manual Merlin GDPX+
GDPXPLUS - IOM Iss: 8 02-21
18
Service & Calibration
Access to the interior of the detector or control panel, when carrying out any work, must only be
conducted by trained personnel.
Before carrying out any work ensure local regulations and site procedures are followed.
Do not tamper with or in any way disassemble the detector.
Do not expose gas sensors to concentrations of alcohol found in many products, these may damage,
deteriorate or affect the gas sensing element – such as; wine; deodorants; stain removers; thinners.
Always remove the regulator/valve from cylinder after use.
Always check cylinder pressure upon sealing valve – there may not be a sufficient amount of gas.
All cylinders will re-seal upon removal of the regulator/valve.
Always give at least five (5) minutes between testing the same unit or until gas has fully dispersed.
Always consider safety and use equipment in accordance with Safety Data Sheets.
Detector Service Message
A service screen will intermittently flash every 30 seconds after one year of operation.
The detector will still operate as intended during this time. This message prompts a recommended
service and calibration of the gas sensor to ensure operational accuracy.
When Merlin gas detector(s) display the service message – the GDPX+ panel will show [SERVICE] on the
status screen. The GDPX+ will still operate as intended and if any dangerous gas levels are detected, your
GDPX+ will show the detector ID in alarm in the top left hand corner.
It is recommended that detectors are inspected and serviced at least annually from the date of installation
for optimum performance and protection.
Enter Service Mode
When service mode is activated, the control panel will ignore all detector alarm states and the gas
valve will remain active. The panel will return to a normal operational state after one hour of service
activation unless deactivated manually by pressing the [EXIT] button on screen.
1.
Short out the unmarked service header on the control panel circuit board.
2.
The screen will display [Service Mode] in the top right hand corner of the digital screen.
3.
Proceed to service & re-calibrate detectors.
4.
Upon completion of service and calibration – exit Service Mode and press Reset.
Service Mode will be activated for one (1) hour. If more
time is necessary - exit service mode and short
out the service header again. To exit service mode
– press the blue [EXIT] button on screen.
