Parker AQUA DUO A455C-2800, Technical Manual

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CAUTION
Do not run high-pressure pump without water adequate flow and pressure. High-pressure
pump will be damaged.
5)
Connect a suitable ground to the RO unit skid, as determined by the specifics of your
installation.
CAUTION
The pumps may be isolated from the ship’s bonding system because of the protective
coating applied to the pumps and their attached motor. As such, there may be no
continuity between the pumps and the ship’s bonding system. The path of stray current
from the electric motors may be through the Feedwater Line. This is especially true if
the electric motor grounding wire is insufficient. If left unbonded, the pumps become
sacrificial and corrosion by electrolysis takes effect and destroys the pump manifolds,
chambers, and impellers. Such destruction can render these pumps inoperable within
just a few short months. The System Warranty does not cover damage resulting from
electrolysis or improper or inadequate grounding.
2.4 COMPONENTS
All components supplied by Parker, both standard and optional, are described in this section
along with items required or desired by the installer. The location, operation, and purpose of each
major component are briefly explained in this section.
Each component in this manual is given an ID-number or “ CALLOUT. ” A components list of the
Aqua Duo which details the function and description of each “CALLOUT” can be found in Table 2.1.
In addition, a detailed Piping & Instrumentation Diagram of each system capacity can be found in
Figure 2.4 through 2.7.
NOTE
THE AQUA DUO IS DESIGNED AS A TWO-UNIT REDUNDANCY SYSTEM. BOTH RO UNITS (#1 & #2) ARE
INDEPENDENT OF EACH OTHER AND CAN RUN SIMULTANEOUSLY TOGETHER OR SEPARATELY FROM ONE
ANOTHER.
NOTE
TO PRODUCE THE FULL CAPACITY OF THE SYSTEM, THE TWO UNITS (UNIT #1 & UNIT #2) MUST OPERATE
SIMULTANOUSLY.