3
41840-A McAlby Court, Murrieta, CA 92562
(800) 451-9343, email: [email protected]
Congratulations on your purchase of the Nimbus Sierra reverse osmosis system. When properly maintained, this
system 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.
The Nimbus Sierra reverse osmosis system must be serviced on a regular basis to maintain efficiency and to
safeguard water quality. Each system 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 replace-
ment intervals, the system should be tested for TDS by an authorized Nimbus dealer. Instructions for cartridge
replacement can be found on page 11.
Any significant change in performance of the system should be investigated promptly to avoid secondary damage
or deterioration to other parts of the system.
Introduction To The Sierra
Stage
Description
Cap Color
Replacement
Interval
1 & 2
20 micron sediment
prefilter plus granular
activated carbon.
Green
6-12 months
3
Reverse osmosis membrane
White
12 months
4
Granular activated carbon
post-filter
Blue
6-12 months
System Performance
Daily production rate
42.8 L/d (11.3 gpd)
Total Dissolved Solids Reduction 96.4%
Feed Water Requirements
Feed Water
Potable*
Feed Pressure
275 kPa, (40psi) to 552kPa (80psi)
Feed temperature
1°C (33°F) to 38°C (100°F)
Total dissolved solids
2,000 mg/L max
Chlorine
1.0 mg/L max.
Do not use with water that is microbiologically unsafe. The feed water must
also be free of potential membrane foulants such as manganese, iron and
hydrogen sulfide.
