WatchGas PDM PRO CO2 User manual

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PDM
PRO CO2
Sustainable
Gas Detector
SERVICE MANUAL

Detection PDM PRO CO2Sustainable Single Gas Detector User Manual
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Contents
Contents 2
Description 4
Warning 4
1 Maintenance 4
1.1 Sensor replacement 4
1.2 Battery replacement 5
2 Limited Warranty 6

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User Manual PDM PRO CO2Sustainable Single Gas Detector
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Description
The PDM PRO CO₂ is a portable single gas detector designed to detect the presence of carbon dioxide gas in ambient
environment. When activated, PDM PRO CO₂ continuously monitors ambient air for the presence of carbon dioxide gas and
alerts the user to potentially unsafe exposure with LED, vibrating, and audible alarms in the event that gas concentration
exceeds alarm setpoints. The settings value can be adjusted manually or by connecting to a PC software.
Warning
• Any unauthorized attempt to repair or modify the product, or any other cause of damage beyond the range
of the intended use, including damage by re, lightening, or other hazard, voids liability of the manufactu-
rer.
• Activate this product only if sensor, visual, detection, and audible cover are clear from contaminants such as
dirt and debris that could block the area where gas is to be detected.
• Do not clean and rub the LCD screen of the products with a dry cloth or hands in hazardous environment to
prevent the static electricity.
• Perform cleaning and maintenance of the products in fresh air that is free of hazardous gases
• Test the response of a sensor regularly by the gas concentration exceeding alarm set points.
• Test LED, audio and vibration manually.
• If the temperature changes sharply during use of the device (e.g., indoors vs outdoors), the value of the
measured gas concentration can suddenly change. Please use the detector after the gas concentration
value has stabilized.
• Severe vibration or shock to the device may cause a sudden reading change. Please use detector after the
value of gas concentration has stabilized. Excessive shock to the detector can cause the device and/or sen-
sor to malfunction.
• Alarm value should be set based on local regulations. Therefore, alarm values should be changed only un-
der the responsibility and approval of the administration of the work site where the instrument is used.
• Use IR communications in the safety zone which is free of hazardous gases.
• Replace the battery and sensor in a clean environment, which is free of hazardous gas.
• If the CO2concentration reaches 0 ppm, the calibration should be performed.
Caution
• Before operating this device, please read the manual carefully.
• This device is not an analyzer, but a gas detector.
• If calibration and self-test fails continuously, please do not use the device and contact a WatchGas distribu-
tor.
• Clean detectors with a soft cloth and do not use chemical substances for cleaning.

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1. Maintenance
FRONT COVER
SENSOR
PCB
BATTERY
REAR COVER BELT CLIP
Caution
-Before dissembling the detector, power it o.
-It is absolutely prohibited to replace battery at potential explosion or dangerous regions.
Replace the battery in a clean environment, which has no hazardous gases.
-Replacement of components can invalidate the intrinsic safety function. Replacing thesensor and
battery should be performed by authorized sellers, agents, distributors, or safety managers.
-The sensors published by WatchGas should be used for replacement. Product: Rechargeable Li-
ion(polymer) power supply unit (500mAh)
-Service task is limited to only for sensors & battery replacement. After the sensor replacement,
recommend to perform the standard calibration with CO2.

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User Manual PDM PRO CO2Sustainable Single Gas Detector
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1.1 SENSOR REPLACEMENT
1. Move to a fresh air environment and power o the detector.
2. Remove the back case by unscrewing the 6 screws.
3. Remove the 2 screws on the PCB Board.
4. Carefully replace with the new sensor provided by the authorized dealers or WatchGas.
5. Ensure the sensor pins are matched with the above image and the sensor is aligned with the PCB board.
6. Assemble the detector and turn on the detector.
7. After assembling, perform Zero(N2, 99.9%vol) calibration, and Span(CO2) calibration. Before use, stabilize the
detector for 3 minutes.
1.2 BATTERY REPLACEMENT
1. Move to a fresh air environment and power o the detector.
2. Remove the back case by unscrewing the 6 screws.
3. Remove the 2 screws on the PCB Board.
4. Carefully unplug the battery from the PCB board.
5. Place the new battery in the battery protection case. Battery Specication: Rechargeable Li-ion(polymer)
power supply unit (500mAh)
6. Assemble the detector and turn on the detector.
7. Before use, stabilize the detector for 3 minutes.

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2. Limited Warranty
WATCHGAS warrants this product to be free of defects in workmanship and materials-under normal
use and service-for two years from the date of purchase from the manufacturer or from the product’s
authorized reseller.
The manufacturer is not liable (under this warranty) if its testing and examination disclose that the
alleged defect in the product does not exist or was caused by the purchaser’s (or any third party’s)
misuse, neglect, or improper installation, testing, or calibrations. Any unauthorized attempt to repair
or modify the product, or any other cause of damage beyond the range of the intended use, including
damage by re, lightening, water damage or other hazard, voids liability of the manufacturer.
In the event that a product should fail to perform up to manufacturer specications during the appli-
cable warranty period, please contact the product’s authorized reseller or WATCHGAS service center at
[phone] for repair/return information.
WatchGas
Klaverbaan 121
2908 KD Capelle aan den IJssel
The Netherlands
[phone]
[e-mail] - www.watchgas.eu
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