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5 Maintenance
Make sure the Multi-Channel Online Monitor System is powered off before performing maintenance
procedures.
The YSI Multi-Channel Online Monitor System is designed to incorporate as many single-use components as possible to
minimize the maintenance and cleaning requirements, reduce contamination risk, and optimize performance. A few multi-
use components, such as Manifold and the Monitor Sample Cup, will require periodic cleaning. Performing the routine
maintenance, component replacement, and cleaning procedures described in this chapter will ensure that the Multi-
Channel Online Monitor System will operate properly.
5.1 Routine Maintenance
Two types of maintenance practices should be employed for the Multi-Channel Online Monitor. The first practice consists
of the daily system checks. The second practice is preventive in nature.
5.1.1 Daily Maintenance
1. Empty the waste bottle. Carefully remove the cap assembly and pour the contents into an approved biowaste
collection container. The waste volume generated will be dependent on the purge volume and sample cycle
parameters. A small amount of disinfectant, i.e., 0.5% Lysol, may be added to the waste bottle before recapping.
Biological hazards can be associated with the waste material of the experiments run on the Multi-
Channel Online Monitor. Inquire about appropriate collecting points and approved methods of
disposal in your country, state, or region.
2. Ensure that the Multi-Channel Online Monitor reagent bottles have sufficient amounts of reagent to perform the
cleaning functions.
3. Inspect the reagents for cloudiness, discoloration or evidence of decomposition. If any of these conditions are
present, discard the reagent in an approved collection container. Replace or clean the reagent bottle for reuse.
Refill the bottle with the desired reagent.
4. All tubing should be inspected daily for discoloration, cloudiness, blockage and leaks.
a. If discoloration or cloudiness is observed, this could indicate aged tubing, loss of tubing integrity and/or
contamination, i.e., microbial growth, in the tubing or monitor cup. In these instances it is
recommended to replace the complete tubing set using the tubing replacement procedures in Section
5.2 Component Replacement below.
b. If tubing blockage is evident, the tubing should be replaced. If blockage is seen in the monitor cup, the
monitor cup will need to be cleaned or replaced.
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