ANATEL A643, Operator'S Manual, Page: 155 / 222

Anatel A643a - Anatel A643a Maintenance 155 of 220
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Anatel
Operator Manual
13 Anatel A643a Maintenance
13.1
General Information
Anatel A643a Analyzers require periodic maintenance in order to ensure the continued
accuracy and reliable performance of the instrument. The UV lamp has a limited life and should
be replaced every six months. It is recommended that the measurement cell have an annual
calibration verification. The lithium battery has a service life of 3–5 years.
Maintenance procedures may be performed either by the user or by Anatel customer service
personnel. The most common maintenance procedures are UV lamp replacement, cleaning
the air filters, lithium battery replacement and printer maintenance. In most instances, the user
can perform these procedures in the field. If problems persist after performing maintenance or
repair procedures, contact the Hach Ultra Customer Service department at 541.472.6500.
Should it be necessary to return Anatel equipment to the factory for maintenance or repair,
obtain a Return Materials Authorization (RMA) number. At that time furnish the Model and
serial number, and any additional relevant information. Ship the instrument(s) to
Hach Ultra,
Attn: RMA #xxxx.
CAUTION:
Purge all water from the Analyzer when taking the instrument out of service. Residual water
can freeze inside the unit, expand and damage the measurement cell. Such damage is
timeconsuming to repair and is not covered by the warranty.
Anatel also offers service and extended warranty options to cover scheduled maintenance,
calibration and repairs. In cases where returning the Analyzer to the factory is impractical, on-
site maintenance and/or verification can be performed by an Anatel technician, or a certified
instrument may be rented. Repairs are performed only at Hach Ultra Service Centers due to the
specialized equipment and parts required.
13.2
Self-Cleaning Mode
It is possible to contaminate an Anatel A643a Analyzer’s measurement cell on any water
system or after long-term storage or inactivity. This condition is indicated by suddenly changing
or erratic TOC or resistivity readings. Extended self-cleaning using the ultraviolet lamp to
oxidize contaminants in the cell is the recommended procedure to alleviate such problems. In
the Self-Clean Mode, the Analyzer’s sample valve is opened to allow water to flow through the
cell. The UV lamp is turned on to oxidize any organic contaminants, which subsequently are
flushed from the instrument by the sample flow.
Note:
The Anatel A643a Analyzer must have the sample vessel attached and be on-line with sample
pressure so that there is flow through the instrument.