Heath Consultants Hi Flow Sampler - Manual (Page 44)

Maintenance Hi Flow

Sampler
44 Instruction 0055-9017
4 Maintenance
Routine maintenance of the Hi Flow  Sampler consists of the following:
• Charging the battery pack
• Replacing the internal filters
• Replacing the gas sensors
• Verifying flow rate
• Setting the time and date
• Resetting the microprocessor
4.1 Electrostatic Discharge Precautions
CAUTION:
Electrostatic discharge (ESD) can destroy sensitive electronic components
inside the Hi Flow  Sampler when its cover is removed.
When performing any maintenance procedure that requires the Hi Flow  Sampler’s
cover to be removed, take the following precautions to prevent ESD from possibly
destroying sensitive electronic components on the main circuit board:
• Make sure you have a reliable ground point available near the work site
• Connect your body to the ground point using a wrist strap
• Always stand on an approved conductive floor mat when touching or handling
equipment
• Ground all equipment you are working on with ground straps
• Handle components only on a grounded anti-static work surface
• Do not wear clothing that generates static electric charges every time you move
• Do not handle static generating objects while working
• Maintain relative humidity in the work area between 40 and 50%
4.2 Charging the Battery Pack
WARNING:
Explosion hazard! DO NOT charge the battery pack in an unsafe
atmosphere.
1. Unplug battery pack from the instrument’s power cord; then remove battery pack
from backpack.
2. Interconnect the supplied power supply, power cord, and charger as shown in
Figure 4-1. Then plug the output of the charger into the battery pack’s charger jack.
Note:
Connecting the charger to the Battery Pack disables the battery’s output, making
it impossible to both charge the battery and run the instrument.
3. Allow a completely discharged battery pack to charge from 8 to 10 hours.