1-866-4 JJSTECH(1-866-455-7832)

  1. Home
  2. Maintenance

Maintenance


Maintenance

To maintain the detector in good operating condition, perform the following basic maintenance as required.

  • Calibrate, bump test, and inspect the detector at regular intervals.
  • Maintain an operations log of all maintenance, calibrations, bump tests, and alarm events.
  • Clean the exterior with a soft damp cloth. Do not use solvents, soaps, or polishes.
  • Do not immerse the detector in liquids.

Replacing/Charging the Batteries

Warning

To avoid personal injury, adhere to the following:

⇒ Replace the batteries immediately when the detector emits a low battery alarm.
⇒ Use only batteries that are recommended by JJS Technologies to prevent personal injury and/or property damage.
⇒ Use only approved batteries, properly installed in the detector case. Refer to Specifications for approved batteries.
⇒ Charge batteries using only a recommended JJS charger. Do not use any other charger. Failure to adhere to this precaution can lead to fire and/or explosion.
⇒ Both the rechargeable battery pack and the alkaline battery pack are hot-swappable, but the alkaline battery cells inside the pack can only be replaced in a non-hazardous location.

Note

To preserve battery life, deactivate the detector when not in use.

To charge the rechargeable battery pack, refer to the GasAlertMicro 5 Battery Charger User Manual.
To replace the alkaline batteries, refer to Table 18, Figure 7, and the following procedures.

Table 18. Replacing the Batteries

Item Description
1 Detector
2 Latch
3 Battery pack
4 Battery tray
5 Captive screws (2)
6 Alkaline batteries (3)
7 Battery shell

Figure 7. Replacing the Batteries

1. Open the latch on the bottom of the detector.
2. Remove the battery pack by lifting the bottom of the pack away from the detector.
3. Unscrew the two captive screws on the battery pack and open the pack.
4. Replace the three alkaline batteries and screw the battery pack back together.
5. Reinsert the battery pack and secure the latch.

Replacing a Sensor or Sensor Filter

Warning

To avoid personal injury, use only sensors specifically designed for the detector. Refer to Replacement Parts and Accessories.

Each sensor has a high degree of resistance to common vapors and gases. To clear a sensor, move the detector to a clean environment and wait 10 to 30 minutes.

Do not expose a sensor to vapors of inorganic solvents such as paint fumes or organic solvents. Refer to Troubleshooting for reference to problems caused by a sensor that requires calibration or replacement.

To replace a sensor or sensor filter, refer to Figure 8, Table 19, and the following procedures.

Figure 8. Replacing a Sensor or Sensor Filter

Note

Detectors that are configured for 1, 2, 3, or 4 gases may contain a dummy sensor in one of the four sensor locations.

Table 19. Replacing a Sensor or Sensor Filter

Item Description
1 Sensor cover
2 Sensor filter
3 Sensors
4 Detector
5 Machine screws (2)

1. If required, deactivate the detector.
2. Remove the two machine screws on the rear shell and then remove the sensor cover or optional pump module.
3. Remove the sensor filter and/or the sensor(s). Gently rocking the sensor back and forth may help free a tightly held sensor.
4. Insert the new filter and/or sensor. Ensure the sensor posts are aligned correctly.
5. Re-assemble the detector.
6. If the sensor is changed (eg. SO2 to an H2S), the detector must be reconfigured. Refer to the Sensors in the Tech Mode option.
7. Calibrate the detector after changing any sensor(s). Refer to Calibration and Setting Alarm Setpoints.

Photoionization Detector (PID)

Clean or Replace the Lamp

The PID lamp must be cleaned on a regular basis. Use only the cleaning kit that is supplied by JJS Technical Services.

To clean the PID lamp, refer to the illustrations and procedures that are provided with the PID Lamp Cleaning Kit. To order the kit, refer to Replacement Parts and Accessories.

Note

To ensure proper maintenance and continued accurate readings from the sensor, use only the PID Lamp Cleaning Kit that is provided by JJS Technical Services.

Table 20. Parts of the PID sensor

Item Description
1 Sensor cover
2 Electrode stack
3 Diffusion barrier
4 Lamp
5 PID sensor

Figure 9. Parts of the PID

Replace the Lamp

Replace the lamp when it falls below the acceptable level. Possible indicators that the lamp requires replacement are as follows:

  • The detector will not calibrate.
  • The start-up self-test fails.
  • The ppm levels are incorrect.

To replace the lamp, refer to the illustrations and procedures in the PID Lamp Cleaning Kit.

If required, contact JJS Technical Services for more information.

Replace the Electrode Stack

Replace the electrode stack when it is contaminated. To replace the electrode stack, refer to Table 20, Figure 9, and the following procedures.

1. Remove the sensor cover.
2. Remove the old electrode stack.
3. Insert the new electrode stack.

Note

Ensure your fingers do not make contact with the diffusion barrier or the electrodes on the underside of the stack.

4. Replace the sensor cover.