Return Procedures; Draining The Analyzer - Hach Anatel PAT700 User Manual

Maintenance and Troubleshooting

12.3.3 Return procedures

12.3.4 Draining the analyzer

Page 174
To return the Anatel PAT700 TOC Analyzer for service, first obtain a return material
authorization number (RA#). The RA# is necessary for any analyzer that requires repair
or calibration by an authorized service center. Include the RA# on the shipping label
when the analyzer is returned.
While the RA# process is described in this section, for the most up-to-date RA# process
information, including copies of all required forms, call HACH Company at 800.866.7889
or +1 541.472.6500.
CAUTION
Chemical hazard! Failure to dispose of hazardous waste by-products in
accordance with applicable regulations can cause exposure to poisonous
chemicals, resulting in severe environmental and property damage or personal
injury. Adhere to applicable local, state, and federal regulations to ensure proper
disposal of hazardous waste by-products.
Note: Failure to purge the analyzer of all liquid, remove all process materials, and thoroughly clean
the analyzer before returning it to HACH Company, Inc. can cause property damage or personal
injury.
Before shipping the analyzer:
• Purge the analyzer of all liquid.
• Remove all process materials and thoroughly clean the analyzer.
Note: Failure to purge all water from the analyzer when taking the instrument out of service can
cause residual water to freeze and expand inside the analyzer, resulting in damage to the
measurement cell.
To avoid damaging the measurement cell, purge all water from the analyzer before taking
it out of service. Such damage is time consuming to repair and is not covered by the
warranty.
HACH Company also offers service and extended warranty options to cover scheduled
maintenance, calibration and repairs. If returning the analyzer to the factory is impractical,
onsite maintenance and/or verification can be performed by a HACH Company
technician, or a certified analyzer may be rented. Repairs are performed only at HACH
Company service centers due to the specialized equipment and parts required.
For two reasons, you must drain the PAT700 of all water before removing the analyzer
from its source:
• If the analyzer is removed from service for temporary or long term storage (longer
than a month), any water remaining in the measurement cell is a medium for bacteria
growth. Elements contained in the sample water will settle and adhere to the
instrument components, causing contamination. The analyzer should self-clean for an
extended period of time before reinstallation to ensure accurate and stable data.
• Draining the water out of the analyzer also prevents damage due to freezing. If the
analyzer is stored or shipped in a cold environment, the water inside the analyzer
expands and could severely damage sensitive components. Replacing these
components is expensive and increases repair time as much as a week.
Note: Leaving water inside the analyzer if it is in a warehouse in the winter can cause freezing, and
shipping the analyzer from a warm climate to a cold climate can expose the analyzer to temperature
extremes en route, resulting in product damage.