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Congratulations on your purchase of the Nimbus Sierra reverse osmosis base unit. When
properly maintained, this unit will provide you with years of trouble-free service. The next
sections contain important information on proper care and maintenance. Please take a few
minutes to read through this information.
A
OWNERS MANUAL
About This System
B
OWNERS MANUAL
Maintenance Schedule
The Nimbus Sierra reverse osmosis base unit must be serviced on a regular basis to maintain
efficiency and to safeguard water quality. Each unit is equipped with a pre-filter, a
membrane filter, and a post-filter. These cartridges work together to remove potential
contaminants from your tap water and must be replaced at regular intervals. The chart
below gives a general replacement timetable. For more accurate membrane filter
replacement intervals, the system should be tested for TDS by an authorized Nimbus dealer.
Instructions for cartridge replacement can be found in Section 10 of the Installation Guide.
Any significant change in performance of the system should be investigated promptly to
avoid secondary damage or deterioration to other parts of the system.
Component Interval Indications For Service
Pre-Filter 6-12 months Unit takes longer than 3 hours
(Green cap) to fill a completely drained tank.
Post-Filter 6-12 months Odors, including a chlorine odor,
(Blue cap) in the product water.
Membrane Filter 12 months Significant increase in the level of
(White cap) total dissolved solids (TDS) in the
product water (as determined by
a conductivity meter).
Tank 12 months No indications. Tank should be
sanitized to reduce bacterial
growth.