Parker AQUA DUO - A455C, Technical Manual

Page: 53 / 81

53
6.0 MAINTENANCE & REPAIR
6.1 GENERAL
The service life of most of the system equipment is directly related to the raw water inlet
conditions. Improper maintenance will also significantly reduce the life expectancy of the
major unit components (such as the membranes, filters, and pumps) as well as the
reliability of the unit. Under normal conditions, and with proper maintenance, a reverse
osmosis membrane (which is the major consumable item) should have an effective service
life somewhere between 3 to 5 years.
D
ail
y
We
ekly
M
o
n
thl
y
Q
u
arterly
Sem
i-
An
n
u
all
y
An
n
u
all
y (
30
0
HRS
)
As Requ
ired
Lab
o
r H
o
u
rs
(app
ro
xim
ate
)
Fresh Water Flush • 0.1
Replace micron filter(s) • 0.5
Fresh Flush Charcoal Filter
Replacement
• 0.2
Air/Oil Separator • 0.5
Sea Strainer • 0.2
Inspect High-Pressure Pumps for
leakage
• 0.1
Replace membranes • 1.0
Clean membranes • 2.0
Transducer • 0.5
High Pressure Pump Oil • 0.1
Replace Pump Seal Kit • 0.5
Replace Pump Valve Kit • 0.5
UV Sterilizer – Clean Quarts Sleeve • 0.2
Table 6.0 - Maintenance Task Chart
6.2 MICRON FILTER ELEMENT REPLACEMENT
The 5-micron Prefilter elements (FIL-1 & FIL-2) should be replaced when the differential pressure
across the filter and inlet of the system exceeds 20 psi (1.4 BAR). A shutdown alarm will occur on the