Probe Replacement Schedule; Cleaning Basket / Wye Strainer; Pellet Feeder Maintenance; Check / Refill Pellet Feeder - Nalco 3D TRASAR Series Installation And Operation Manual

8.5

Probe Replacement Schedule

To minimize downtime, it is recommended to keep spare pH, ORP and Corrosion probes on hand.
Part numbers can be found in Appendix C.
Probe
Every six months or when probe
pH
readings become erratic.
Every six months or when probe
ORP
readings become erratic.
Every sixty to ninety days or when
Corrosion
probe readings become erratic.
* Replace Conductivity probe only in the event of failure.
8.6

Cleaning Basket / Wye Strainer

Visibly inspect the inlet basket strainers on both the pellet feeder and the 3D TRASAR system.
Debris can be cleared by shutting off the inlet and outlet valves and unscrewing the clear bowl. Pay
care not to lose the o-ring seal on the bowl assembly . The mesh screen can be removed, rinsed in
clean water and then reinstalled.
The wye strainer assembly on the pellet feeder serves as a dissolving chamber for the bio-reporter
pellets. If any residue from bio-reporter pellets remains in the strainer wear rubber gloves when
removing and cleaning this strainer mesh.
Close the inlet and outlet valves and unscrew the plug at the end of the wye. Remove the mesh and
rinse with clean water.
8.7

Pellet Feeder Maintenance

For trouble free operation, the following maintenance instructions can be found in section 6.
• Check/Refill Pellet Feeder. Replace Pellet Feeder Desiccant. Please refer to section 6.5
• Clean Pellet Feeder. Please refer to section 6.7
• Tighten Pellet Feeder V alve Seat. Please refer to section 6.8.2
• Replace Pellet Feeder Rotor Shield. Please refer to section 6.8.3
8.8

Check / Refill Pellet Feeder

Check to see that the Pellet Feeder is at least ¼ full of bio-reporter pellets. If less than ¼ full add a
full container of Pellets and replace the desiccant pack in the lid with the new one provided. Re-
placement desiccants are included with each container of pellets. Refer to Section 6 for detailed
pellet feeder maintenance.
Technical Help
(630) 305-CHEM
Replacement Frequency
521-OM0108.88
Copyright © 2009 Nalco Company
®
3D TRASAR 5500 - Installation & Operation Manual
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